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Comerica

cma · NYSE Financial Services
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FY2010 Annual Report · Comerica
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Comerica 
Incorporated  
2010 
Annual 
Report

LLECTIVE

Success

When our customers succeed, so do we. 

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COmerica Profile

  is a financial services company headquartered in Dallas, Texas, and 

Comerica Incorporated (NYSE: CMA)
strategically aligned by three business segments: The Business Bank, The Retail Bank, and Wealth & Institutional 
Management. Comerica focuses on relationships, and helping people and businesses be successful. In addition to Texas, 
Comerica Bank locations can be found in Arizona, California, Florida and Michigan, with select businesses operating 
in several other states, as well as in Canada and Mexico. To receive e-mail alerts of breaking Comerica news, go to 
comerica.com/newsalerts.

Financial Highlights In Millions, Except Per Share Data; Years Ended December 31

2010

2009

Income Statement

Net interest income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

$ 1,646

Provision for loan losses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Net income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Preferred stock dividends. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Net income (loss) attributable to common shares . . . . . . . . . . . . . . . . . . . . 

Per Share Of Common Stock

Diluted net income (loss) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Cash dividends declared . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Common shareholders’ equity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Market value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Average common shares outstanding – diluted . . . . . . . . . . . . . . . . . 

Ratios 

Return on average assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   

0.50%

Return on average common shareholders’ equity . . . . . . . . . . . . . 

Tier 1 common capital as a percentage of risk-weighted assets*. . 

Tier 1 capital as a percentage of risk-weighted assets. . . . . . . . 

Total capital as a percentage of risk-weighted assets. . . . . . . . . 

Tangible common equity as a percentage of tangible assets* . . 

Balance Sheet (at December 31)

Total assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

$ 53,667

Total earning assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Total loans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Total deposits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Total preferred equity . . . . . . . . . . . . . . . . . . . . . . . . . . 

Total shareholders’ equity . . . . . . . . . . . . . . . . . . . . . . 

* See Supplemental Financial Data section for reconcilements of non-GAAP financial measures.

480

277

123

153

0.88

0.25

32.82

42.24

173

2.74

10.13

10.13

14.54

10.54

49,352

40,236

40,471

--

5,793

Tier 1 Common Capital Ratio

in percent

10.13

7.54

6.85

7.08

8.18

$ 1,567

1,082

17

134

(118)

(0.79)

0.20

32.27

29.57

149

0.03%

(2.37)

8.18

12.46

16.93

7.99

$ 59,249

54,558

42,161

39,665

2,151

7,029

Comerica Bank Tower in Dallas, Texas

  2006 

2007 

2008 

2009 

2010

Comerica Incorporated  2010 Annual Report

01

 
COmerica Profile

Comerica Incorporated (NYSE: CMA)

  is a financial services company headquartered in Dallas, Texas, and 

strategically aligned by three business segments: The Business Bank, The Retail Bank, and Wealth & Institutional 

Management. Comerica focuses on relationships, and helping people and businesses be successful. In addition to Texas, 

Comerica Bank locations can be found in Arizona, California, Florida and Michigan, with select businesses operating 

in several other states, as well as in Canada and Mexico. To receive e-mail alerts of breaking Comerica news, go to 

comerica.com/newsalerts.

Financial Highlights In Millions, Except Per Share Data; Years Ended December 31

2010

2009

Income Statement

Net interest income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

$ 1,646

Provision for loan losses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Net income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Preferred stock dividends. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Net income (loss) attributable to common shares . . . . . . . . . . . . . . . . . . . . 

Per Share Of Common Stock

Diluted net income (loss) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Cash dividends declared . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Common shareholders’ equity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Market value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Average common shares outstanding – diluted . . . . . . . . . . . . . . . . . 

480

277

123

153

0.88

0.25

32.82

42.24

173

Ratios 

Return on average assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   

0.50%

Return on average common shareholders’ equity . . . . . . . . . . . . . 

Tier 1 common capital as a percentage of risk-weighted assets*. . 

Tier 1 capital as a percentage of risk-weighted assets. . . . . . . . 

Total capital as a percentage of risk-weighted assets. . . . . . . . . 

Tangible common equity as a percentage of tangible assets* . . 

2.74

10.13

10.13

14.54

10.54

Balance Sheet (at December 31)

Total assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

$ 53,667

Total earning assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Total loans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Total deposits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Total preferred equity . . . . . . . . . . . . . . . . . . . . . . . . . . 

Total shareholders’ equity . . . . . . . . . . . . . . . . . . . . . . 

49,352

40,236

40,471

--

5,793

* See Supplemental Financial Data section for reconcilements of non-GAAP financial measures.

Tier 1 Common Capital Ratio
in percent

10.13

7.54

6.85

7.08

8.18

$ 1,567

1,082

17

134

(118)

(0.79)

0.20

32.27

29.57

149

0.03%

(2.37)

8.18

12.46

16.93

7.99

$ 59,249

54,558

42,161

39,665

2,151

7,029

Comerica Bank Tower in Dallas, Texas

  2006 

2007 

2008 

2009 

2010

Comerica Incorporated  2010 Annual Report

01

 
Letter to Shareholders

To Our Shareholders:

We have successfully navigated the most challenging economic 
environment anyone could have ever imagined. We did so by 
executing our relationship-based strategy, and with a clear vision 
to help people and businesses be successful. Our sharp focus on 
the customer has made a positive difference for us through every 
phase of the current economic cycle. I believe it will continue to 
position us effectively for the future, as well.

Ralph W. Babb Jr.
Chairman and Chief Executive Officer

program, adding only 13 new banking centers 

to our network in 2010, mostly in Texas and 

California. In all, we have added 138 new banking 

centers since launching the program in late 2004. 

These new banking centers have provided us more 

than $3.2 billion in deposits and thousands of new 

customers. For 2011, we expect to add a modest 

number of new banking centers, again reflecting the 

economic environment. 

  We continue to leverage our standing as the 

largest U.S. banking company headquartered in 

Texas, a state with a growing population and a diverse 

economy. Home prices have remained relatively stable 

in Texas, and it continues to have more Fortune 1000 

companies than any other state. We opened our 95th 

banking center in Texas in December. When the 

Primary Markets 

(all data as of December 31, 2010)

95 banking centers

Dallas/Fort Worth Metroplex

Texas

Austin

Houston

Arizona

17 banking centers

Phoenix/Scottsdale

Relationships really do matter. We know 

of Houston, Texas. The acquisition is 

bank. Like Comerica, the Sterling team 

aforementioned acquisition of Sterling Bancshares is 

and understand our customers, and offer 

a strong strategic fit, accelerates our 

shares our focus on relationship banking 

completed, Comerica would grow to have 152 banking 

solutions that help meet their distinct 

growth in Texas and maintains our 

and serving the community.

centers in Texas.

financial needs. This strong focus on 

capital strength. Sterling, with $5.2 billion 

Turning briefly to the economy, the 

California is a state that is showing signs of 

customers, especially during one of the 

in assets, has a very appealing branch 

recovery now underway in our nation is 

strengthening, with more stability in home prices, and 

most turbulent economic times in our 

network, which almost doubles our 

sluggish and uneven. Persistently high 

strong trade data that helps offset weak employment growth. 

nation’s history, reinforced the concept of

presence in Houston, provides us entry 

unemployment and a slowly stabilizing 

We celebrated the opening of our 100th banking center in 

‘collective success.’ That is, when our 

into the fast growing San Antonio market, 

housing market have made this particular 

California in 2010. Shortly after the October grand opening, 

customers succeed, so do we. Following 

and complements our banking center 

recovery a modest one, compared to the 

we received an award from the South Pasadena Preservation 

this letter, you will find some examples 

network in Dallas-Fort Worth. On a pro 

more robust recoveries following previous 

Foundation for restoring the building back to the look and feel 

of customers we’ve helped along the road 

forma basis, the acquisition bolsters our 

recessions. Our customers, many of whom 

of the original 1920s architecture. 

to success.

presence in Texas, one of this nation’s 

are business owners and managers, 

Falling unemployment levels and an improving automotive 

I am pleased to report that Comerica’s 

most attractive growth markets, and would 

remained understandably cautious in 

sector are helping Michigan’s economy rebound. We believe we 

common stock rose 43 percent in 2010, 

move us from 10th to 6th in deposit market 

2010. Uncertainties regarding the 

are doing a good job working with our customers in that state, 

outperforming many of our peers. We were 

share in the state.* We believe this gives 

economy, taxes, healthcare costs and 

where we have had a continuous presence since 1849. We are 

once again among the top performers in 

us the ability to leverage additional 

government regulations put a damper on 

particularly pleased with the credit performance there, given the 

the 24-bank Keefe Bank Index (BKX), 

marketing capacity to offer a wide array 

hiring and spending. As the economy 

economic challenges the state has been facing for a number of 

while ranking no. 83 among all S&P 500 

of products through a larger distribution 

continues to improve, Comerica is well 

years. Michigan is clearly on its way back, and that is good news 

companies. Our stock has performed very 

network, particularly to middle market and 

positioned for growth. 

for Comerica and the nation.

well throughout this economic cycle, 

small business companies.

increasing 113 percent from January 1, 

  We believe the transaction value is fair 

2009, through year-end 2010.

and reflects the scarcity value of the 

In the right markets…

With a solid capital position…

California

103 banking centers

San Francisco & the East Bay

San Jose

Los Angeles

Orange County

San Diego

Fresno

Sacramento

Santa Cruz/Monterey

Inland Empire

Florida

11 banking centers

Boca Raton

Southeast

West/Central

On January 18, 2011, we 
announced plans to acquire 
Sterling Bancshares, Inc., 
of Houston, Texas.

company. There have not been, nor are 

We are among the 25 largest U.S. banking 

Comerica took a number of actions in 2010 that highlighted our 

there expected to be, many banks in 

companies, based on assets of $53.7 

strong capital position. First, we ended our participation in the U.S. 

Texas that have the size, fit and focus of 

billion at year-end 2010. You can see on 

Treasury’s Capital Purchase Program. As you'll recall, in November 

a bank like Sterling. The transaction 

these pages that our 443 U.S. banking 

2008 we issued $2.25 billion of preferred stock and a related warrant 

has been approved by the Comerica 

centers (at December 31, 2010) are 

to the U.S. Department of the Treasury. On March 17, 2010, we 

and Sterling Boards of Directors, and 

located in the urban areas of our five 

announced that we had redeemed all of the preferred shares. In short, 

is expected to be completed by 

primary markets, where there is an 

we repaid our ‘TARP’ investment. In doing so, we eliminated the annual 

I am also pleased we were able to 

mid-year 2011, subject to customary 

abundance of businesses of all sizes, 

$134 million preferred stock dividend.

double the quarterly cash dividend for 

closing conditions, including approval by 

particularly small and middle market 

On October 1, 2010, we fully redeemed all $500 million of our trust 

common stock to $0.10 per share. I’ll 

Sterling shareholders and regulatory 

companies, and where we can leverage 

preferred securities. The Dodd-Frank Wall Street Reform and Consumer 

discuss our solid capital position in more 

approvals. We look forward to a seamless 

our personal banking and wealth 

Protection Act, signed into law on July 21, 2010, changed the treatment 

detail shortly.

integration and offering Sterling customers 

management services.

of this type of security, so it was no longer an effective form of capital for us. 

On January 18, 2011, we announced 

the resources of a larger bank, with the 

In light of the current economy, we 

Our proactive action in addressing this change in regulation eliminated this 

plans to acquire Sterling Bancshares, Inc., 

continued touch and feel of a community 

slowed our banking center expansion 

higher-cost funding.

Michigan

217 banking centers

Metropolitan Detroit 

Greater Ann Arbor

Battle Creek

Jackson

Kalamazoo

Lansing

Midland

Muskegon

02

COllective Success

* Based on June 30, 2010 FDIC data 

Comerica Incorporated  2010 Annual Report

03

For 2010, we reported net income 

muted by the planned and continued 

who retired at the end of January 2011. 

million federal benefit recipients have 

Magazine as one of the 40 best 

  We believe we are uniquely 

attributable to common shares of $153 

reduction of loans in our Commercial 

Combining the leadership of the two 

signed up for the DirectExpress® card 

companies for diversity, and were named 

positioned as the only bank in our peer 

million, or $0.88 per diluted share. These 

Real Estate business line.

organizations, as we did, provides 

since it was introduced in 2008.

by Hispanic Business Magazine to its

group to have redeemed TARP and 

results were significantly better than what 

As businesses continue to expand 

improved leverage opportunities, while 

  Within Wealth & Institutional 

 “Diversity Elite 60” list, and by Latina Style 

eliminated trust preferred securities from 

we saw in 2009. In large part, this is 

their inventories and sales volumes, and 

enabling us to offer a wide spectrum of 

Management, we enhanced the lineup 

Magazine to its “Latina Style 50” list. We 

its capital structure.

attributable to a decrease of $602 million 

as the economy continues its moderate 

products and services to our customers. 

of our proprietary investment advisory 

certainly appreciate the recognition.

Then, on November 16, 2010, we 

in the provision for loan losses in 2010, 

recovery, we believe we are ideally 

Lars Anderson joined us in December 

products and continued to add new 

  We continued to make solid progress 

announced that the Board of Directors 

compared to 2009.

positioned to capitalize on the increased 

as our new Vice Chairman, The Business 

advisors in our key growth markets.

on our corporate sustainability initiatives in 

of Comerica Incorporated had increased 

All of our key credit metrics moved in 

lending opportunities.

the quarterly cash dividend for common 

the right direction in 2010, with decreases 

  We continued to have very strong 

stock to $0.10 per share. The overall 

in net charge-offs, watch list loans and 

deposit generation in 2010, with average 

positive trajectory of our financial 

nonaccrual loans, which led to a 

core deposits increasing $3.4 billion.

performance, which is summarized below, 

significant reduction to the provision 

Our net interest margin expanded to 

Bank. Lars will succeed Dale Greene, 

Executive Vice President, The Business 

Bank, who will retire on his normal 

retirement date in the third quarter of 

2011. Lars comes to Comerica from a 

2010. We completed a range of projects 

designed to improve our environmental 

performance and increase efficiency— 

including efforts to reduce our energy use 

and greenhouse gas emissions, to reduce 

coupled with the modestly improving 

for loan losses. Comerica’s credit 

3.24 percent in 2010, compared to 2.72 

large regional bank, where he had 

Comerica provided some $10 million to 

waste and expand our recycling programs, 

economic environment, enabled us to 

performance throughout this cycle has 

percent in 2009, primarily due to changes 

responsibility for a multi-billion dollar 

not-for-profit organizations nationwide in 

to build new ‘green’ banking centers, and 

increase the quarterly cash dividend.

been among the best in our peer group. 

in the funding mix, including a continued 

loan portfolio, including 12 regional 

2010. In addition, our employees raised 

to improve the coverage and accuracy of 

The board also authorized the 

We believe it is a reflection of our strong 

shift in funding sources toward lower-cost 

banks. His impressive background and 

more than $2.1 million for the United Way 

our sustainability tracking and reporting 

purchase of up to 12.6 million shares, or 

credit culture and the diligent credit 

funds, and improved loan spreads. We 

credentials will further enhance 

and Black United Fund, and they donated 

systems. In addition, we continue to be 

about 7 percent of Comerica’s outstanding 

quality review processes we employ.

believe our balance sheet is well 

Comerica’s reputation as a business 

their personal time and talents with some 

focused on developing deposit and loan 

common stock at September 30, 2010, as 

  Whereas weak loan demand was 

positioned for a rising rate environment.

bank of choice.

60,000 volunteer hours in 2010.

relationships with “clean tech” and “green 

well as outstanding warrants to purchase 

evident in 2010, due to the continued 

  We continued to focus on expense 

up to 11.5 million shares of Comerica's 

caution of our customers in a slowly 

management in 2010. Noninterest 

common stock. The share repurchases 

improving economy, as the year 

expenses decreased $10 million from 

In December 2010, the Federal 

tech” companies.

Reserve Bank of Dallas rated Comerica 

In closing, Comerica remains focused 

Bank’s Community Reinvestment Act 

on executing its strategy and delivering 

have commenced in a cautious manner, 

progressed we saw many encouraging and 

2009. Full-time equivalent staff decreased 

program “Outstanding.” The 

recognizing industry uncertainty on 

positive signs. By year-end, our customers 

by 4 percent from 2009, even as we 

Within our Retail Bank, we launched a 

rating considers three elements: 

regulatory capital standards.

were conveying a more positive and 

added 13 new banking centers in 2010.

new Mobile Banking service in 2010, 

loans made to families with low or 

confident tone. Throughout our 

  We believe our core fundamentals will 

and began offering consumers ITAC 

moderate incomes; investments in 

geographic footprint, our relationship 

continue to show improvement in 2011.

Sentinel®, an identity theft prevention 

low or moderate income 

managers reported a growing sense of 

optimism among customers and prospects. 

service. As a result of the latter, the 

communities; and services extended 

Financial Services Roundtable presented 

to individuals and businesses in such 

Comerica’s 2010 financial performance 

At year-end 2010, our loan pipeline was 

Comerica with its first ITAC Excellence in 

communities. In all individual elements, 

outstanding customer service. We have 

was highlighted by our strong credit 

strong. Also at year-end, period-end loan 

Among notable personnel announcements 

Consumer Protection Award in 2010. 

Comerica received an “Outstanding” score. 

weathered the challenging economic cycle 

performance relative to our peers, solid 

outstandings were stable, with commercial 

in 2010, Curt Farmer, Executive Vice 

Comerica is a charter member of ITAC 

This is the 8th consecutive “Outstanding” 

well, maintaining strong liquidity, solid 

customer deposit generation capabilities, 

loans up more than $700 million, or about 

President, assumed leadership of both the 

(Identity Theft Assistance Center), which 

CRA rating that our bank has achieved.

capital, tight control of expenses, and with 

increased net interest margin and careful 

three percent, compared to the third 

Retail Bank and Wealth & Institutional 

has helped more than 75,000 consumers 

Comerica continued to receive 

credit metrics that are among the best in 

management of expenses.

quarter of 2010. These increases were 

Management, succeeding Connie Beck, 

recover from identity theft. And, in Texas, 

recognition for its commitment to diversity 

our peer group. Going forward, I believe 

we launched a new Healthcare Profession 

in 2010, including being named by 

we are ideally positioned for future growth, 

lending group to take advantage of the 

DiversityInc Magazine as one of the top 

with a strong relationship focus, and with 

significant opportunities in this important 

50 companies for diversity and top 10 

the right people, products and services in 

and growing segment of our economy.

companies for executive women. We also 

place to make a positive difference for our 

  Within our Business Bank, our 

were again named by Black Enterprise 

customers, shareholders and employees.

Treasury Management Services area 

announced a significant technology 

upgrade to our TM Connect Web 

platform, which now provides one of the 

best cash management solutions in the 

market for businesses looking to initiate, 

receive, and manage online payments. 

We also continued to serve as the 

financial agent to the U.S. Treasury 

Department for its DirectExpress® Debit 

MasterCard® program. More than 1.5 

951710311217 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Letter to Shareholders

To Our Shareholders:

We have successfully navigated the most challenging economic 

environment anyone could have ever imagined. We did so by 

executing our relationship-based strategy, and with a clear vision 

to help people and businesses be successful. Our sharp focus on 

the customer has made a positive difference for us through every 

phase of the current economic cycle. I believe it will continue to 

position us effectively for the future, as well.

Ralph W. Babb Jr.

Chairman and Chief Executive Officer

program, adding only 13 new banking centers 

to our network in 2010, mostly in Texas and 

California. In all, we have added 138 new banking 

centers since launching the program in late 2004. 

These new banking centers have provided us more 

than $3.2 billion in deposits and thousands of new 

customers. For 2011, we expect to add a modest 

number of new banking centers, again reflecting the 

economic environment. 

  We continue to leverage our standing as the 

largest U.S. banking company headquartered in 

Texas, a state with a growing population and a diverse 

economy. Home prices have remained relatively stable 

in Texas, and it continues to have more Fortune 1000 
companies than any other state. We opened our 95th 

banking center in Texas in December. When the 

Primary Markets 
(all data as of December 31, 2010)

Texas

95 banking centers
Dallas/Fort Worth Metroplex
Austin
Houston

Arizona

17 banking centers
Phoenix/Scottsdale

Relationships really do matter. We know 

of Houston, Texas. The acquisition is 

bank. Like Comerica, the Sterling team 

aforementioned acquisition of Sterling Bancshares is 

and understand our customers, and offer 

a strong strategic fit, accelerates our 

shares our focus on relationship banking 

completed, Comerica would grow to have 152 banking 

solutions that help meet their distinct 

growth in Texas and maintains our 

and serving the community.

centers in Texas.

financial needs. This strong focus on 

capital strength. Sterling, with $5.2 billion 

Turning briefly to the economy, the 

California is a state that is showing signs of 

customers, especially during one of the 

in assets, has a very appealing branch 

recovery now underway in our nation is 

strengthening, with more stability in home prices, and 

most turbulent economic times in our 

network, which almost doubles our 

sluggish and uneven. Persistently high 

strong trade data that helps offset weak employment growth. 

nation’s history, reinforced the concept of

presence in Houston, provides us entry 

unemployment and a slowly stabilizing 

We celebrated the opening of our 100th banking center in 

‘collective success.’ That is, when our 

into the fast growing San Antonio market, 

housing market have made this particular 

California in 2010. Shortly after the October grand opening, 

customers succeed, so do we. Following 

and complements our banking center 

recovery a modest one, compared to the 

we received an award from the South Pasadena Preservation 

this letter, you will find some examples 

network in Dallas-Fort Worth. On a pro 

more robust recoveries following previous 

Foundation for restoring the building back to the look and feel 

of customers we’ve helped along the road 

forma basis, the acquisition bolsters our 

recessions. Our customers, many of whom 

of the original 1920s architecture. 

to success.

presence in Texas, one of this nation’s 

are business owners and managers, 

Falling unemployment levels and an improving automotive 

I am pleased to report that Comerica’s 

most attractive growth markets, and would 

remained understandably cautious in 

sector are helping Michigan’s economy rebound. We believe we 

common stock rose 43 percent in 2010, 

move us from 10th to 6th in deposit market 

2010. Uncertainties regarding the 

are doing a good job working with our customers in that state, 

outperforming many of our peers. We were 

share in the state.* We believe this gives 

economy, taxes, healthcare costs and 

where we have had a continuous presence since 1849. We are 

once again among the top performers in 

us the ability to leverage additional 

government regulations put a damper on 

particularly pleased with the credit performance there, given the 

the 24-bank Keefe Bank Index (BKX), 

marketing capacity to offer a wide array 

hiring and spending. As the economy 

economic challenges the state has been facing for a number of 

while ranking no. 83 among all S&P 500 

of products through a larger distribution 

continues to improve, Comerica is well 

years. Michigan is clearly on its way back, and that is good news 

companies. Our stock has performed very 

network, particularly to middle market and 

positioned for growth. 

for Comerica and the nation.

well throughout this economic cycle, 

small business companies.

increasing 113 percent from January 1, 

  We believe the transaction value is fair 

2009, through year-end 2010.

and reflects the scarcity value of the 

In the right markets…

With a solid capital position…

California

103 banking centers
San Francisco & the East Bay
San Jose
Los Angeles
Orange County
San Diego
Fresno
Sacramento
Santa Cruz/Monterey
Inland Empire

Florida

11 banking centers
Boca Raton
Southeast
West/Central

On January 18, 2011, we 

announced plans to acquire 

Sterling Bancshares, Inc., 

of Houston, Texas.

company. There have not been, nor are 

We are among the 25 largest U.S. banking 

Comerica took a number of actions in 2010 that highlighted our 

there expected to be, many banks in 

companies, based on assets of $53.7 

strong capital position. First, we ended our participation in the U.S. 

Texas that have the size, fit and focus of 

billion at year-end 2010. You can see on 

Treasury’s Capital Purchase Program. As you'll recall, in November 

a bank like Sterling. The transaction 

these pages that our 443 U.S. banking 

2008 we issued $2.25 billion of preferred stock and a related warrant 

has been approved by the Comerica 

centers (at December 31, 2010) are 

to the U.S. Department of the Treasury. On March 17, 2010, we 

and Sterling Boards of Directors, and 

located in the urban areas of our five 

announced that we had redeemed all of the preferred shares. In short, 

is expected to be completed by 

primary markets, where there is an 

we repaid our ‘TARP’ investment. In doing so, we eliminated the annual 

I am also pleased we were able to 

mid-year 2011, subject to customary 

abundance of businesses of all sizes, 

$134 million preferred stock dividend.

double the quarterly cash dividend for 

closing conditions, including approval by 

particularly small and middle market 

On October 1, 2010, we fully redeemed all $500 million of our trust 

common stock to $0.10 per share. I’ll 

Sterling shareholders and regulatory 

companies, and where we can leverage 

preferred securities. The Dodd-Frank Wall Street Reform and Consumer 

discuss our solid capital position in more 

approvals. We look forward to a seamless 

our personal banking and wealth 

Protection Act, signed into law on July 21, 2010, changed the treatment 

detail shortly.

integration and offering Sterling customers 

management services.

of this type of security, so it was no longer an effective form of capital for us. 

On January 18, 2011, we announced 

the resources of a larger bank, with the 

In light of the current economy, we 

Our proactive action in addressing this change in regulation eliminated this 

plans to acquire Sterling Bancshares, Inc., 

continued touch and feel of a community 

slowed our banking center expansion 

higher-cost funding.

Michigan

217 banking centers
Metropolitan Detroit 
Greater Ann Arbor
Battle Creek
Grand Rapids
Jackson
Kalamazoo
Lansing
Midland
Muskegon

02

COllective Success

* Based on June 30, 2010 FDIC data 

Comerica Incorporated  2010 Annual Report

03

For 2010, we reported net income 

muted by the planned and continued 

who retired at the end of January 2011. 

million federal benefit recipients have 

Magazine as one of the 40 best 

  We believe we are uniquely 

attributable to common shares of $153 

reduction of loans in our Commercial 

Combining the leadership of the two 

signed up for the DirectExpress® card 

companies for diversity, and were named 

positioned as the only bank in our peer 

million, or $0.88 per diluted share. These 

Real Estate business line.

organizations, as we did, provides 

since it was introduced in 2008.

by Hispanic Business Magazine to its

group to have redeemed TARP and 

results were significantly better than what 

As businesses continue to expand 

improved leverage opportunities, while 

  Within Wealth & Institutional 

 “Diversity Elite 60” list, and by Latina Style 

eliminated trust preferred securities from 

we saw in 2009. In large part, this is 

their inventories and sales volumes, and 

enabling us to offer a wide spectrum of 

Management, we enhanced the lineup 

Magazine to its “Latina Style 50” list. We 

its capital structure.

attributable to a decrease of $602 million 

as the economy continues its moderate 

products and services to our customers. 

of our proprietary investment advisory 

certainly appreciate the recognition.

Then, on November 16, 2010, we 

in the provision for loan losses in 2010, 

recovery, we believe we are ideally 

Lars Anderson joined us in December 

products and continued to add new 

  We continued to make solid progress 

announced that the Board of Directors 

compared to 2009.

positioned to capitalize on the increased 

as our new Vice Chairman, The Business 

advisors in our key growth markets.

on our corporate sustainability initiatives in 

of Comerica Incorporated had increased 

All of our key credit metrics moved in 

lending opportunities.

the quarterly cash dividend for common 

the right direction in 2010, with decreases 

  We continued to have very strong 

stock to $0.10 per share. The overall 

in net charge-offs, watch list loans and 

deposit generation in 2010, with average 

positive trajectory of our financial 

nonaccrual loans, which led to a 

core deposits increasing $3.4 billion.

performance, which is summarized below, 

significant reduction to the provision 

Our net interest margin expanded to 

Bank. Lars will succeed Dale Greene, 

Executive Vice President, The Business 

Bank, who will retire on his normal 

retirement date in the third quarter of 

2011. Lars comes to Comerica from a 

2010. We completed a range of projects 

designed to improve our environmental 

performance and increase efficiency— 

including efforts to reduce our energy use 

and greenhouse gas emissions, to reduce 

coupled with the modestly improving 

for loan losses. Comerica’s credit 

3.24 percent in 2010, compared to 2.72 

large regional bank, where he had 

Comerica provided some $10 million to 

waste and expand our recycling programs, 

economic environment, enabled us to 

performance throughout this cycle has 

percent in 2009, primarily due to changes 

responsibility for a multi-billion dollar 

not-for-profit organizations nationwide in 

to build new ‘green’ banking centers, and 

increase the quarterly cash dividend.

been among the best in our peer group. 

in the funding mix, including a continued 

loan portfolio, including 12 regional 

2010. In addition, our employees raised 

to improve the coverage and accuracy of 

The board also authorized the 

We believe it is a reflection of our strong 

shift in funding sources toward lower-cost 

banks. His impressive background and 

more than $2.1 million for the United Way 

our sustainability tracking and reporting 

purchase of up to 12.6 million shares, or 

credit culture and the diligent credit 

funds, and improved loan spreads. We 

credentials will further enhance 

and Black United Fund, and they donated 

systems. In addition, we continue to be 

about 7 percent of Comerica’s outstanding 

quality review processes we employ.

believe our balance sheet is well 

Comerica’s reputation as a business 

their personal time and talents with some 

focused on developing deposit and loan 

common stock at September 30, 2010, as 

  Whereas weak loan demand was 

positioned for a rising rate environment.

bank of choice.

60,000 volunteer hours in 2010.

relationships with “clean tech” and “green 

well as outstanding warrants to purchase 

evident in 2010, due to the continued 

  We continued to focus on expense 

up to 11.5 million shares of Comerica's 

caution of our customers in a slowly 

management in 2010. Noninterest 

common stock. The share repurchases 

improving economy, as the year 

expenses decreased $10 million from 

In December 2010, the Federal 

tech” companies.

Reserve Bank of Dallas rated Comerica 

In closing, Comerica remains focused 

Bank’s Community Reinvestment Act 

on executing its strategy and delivering 

commenced in 2011 and will proceed in 

progressed we saw many encouraging and 

2009. Full-time equivalent staff decreased 

program “Outstanding.” The 

a cautious manner, recognizing industry 

positive signs. By year-end, our customers 

by 4 percent from 2009, even as we 

Within our Retail Bank, we launched a 

rating considers three elements: 

uncertainty on regulatory capital standards.

were conveying a more positive and 

added 13 new banking centers in 2010.

new Mobile Banking service in 2010, 

loans made to families with low or 

confident tone. Throughout our 

  We believe our core fundamentals will 

and began offering consumers ITAC 

moderate incomes; investments in 

geographic footprint, our relationship 

continue to show improvement in 2011.

Sentinel®, an identity theft prevention 

low or moderate income 

managers reported a growing sense of 

optimism among customers and prospects. 

service. As a result of the latter, the 

communities; and services extended 

Financial Services Roundtable presented 

to individuals and businesses in such 

Comerica’s 2010 financial performance 

At year-end 2010, our loan pipeline was 

Comerica with its first ITAC Excellence in 

communities. In all individual elements, 

outstanding customer service. We have 

was highlighted by our strong credit 

strong. Also at year-end, period-end loan 

Among notable personnel announcements 

Consumer Protection Award in 2010. 

Comerica received an “Outstanding” score. 

weathered the challenging economic cycle 

performance relative to our peers, solid 

outstandings were stable, with commercial 

in 2010, Curt Farmer, Executive Vice 

Comerica is a charter member of ITAC 

This is the 8th consecutive “Outstanding” 

well, maintaining strong liquidity, solid 

customer deposit generation capabilities, 

loans up more than $700 million, or about 

President, assumed leadership of both the 

(Identity Theft Assistance Center), which 

CRA rating that our bank has achieved.

capital, tight control of expenses, and with 

increased net interest margin and careful 

three percent, compared to the third 

Retail Bank and Wealth & Institutional 

has helped more than 75,000 consumers 

Comerica continued to receive 

credit metrics that are among the best in 

management of expenses.

quarter of 2010. These increases were 

Management, succeeding Connie Beck, 

recover from identity theft. And, in Texas, 

recognition for its commitment to diversity 

our peer group. Going forward, I believe 

we launched a new Healthcare Profession 

in 2010, including being named by 

we are ideally positioned for future growth, 

lending group to take advantage of the 

DiversityInc Magazine as one of the top 

with a strong relationship focus, and with 

significant opportunities in this important 

50 companies for diversity and top 10 

the right people, products and services in 

and growing segment of our economy.

companies for executive women. We also 

place to make a positive difference for our 

  Within our Business Bank, our 

were again named by Black Enterprise 

customers, shareholders and employees.

Treasury Management Services area 

announced a significant technology 

upgrade to our TM Connect Web 

platform, which now provides one of the 

best cash management solutions in the 

market for businesses looking to initiate, 

receive, and manage online payments. 

We also continued to serve as the 

financial agent to the U.S. Treasury 

Department for its DirectExpress® Debit 

MasterCard® program. More than 1.5 

951710311217 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
program, adding only 13 new banking centers 

to our network in 2010, mostly in Texas and 

California. In all, we have added 137 new banking 

centers since launching the program in late 2004. 

These new banking centers have provided us more 

than $3.2 billion in deposits and thousands of new 

customers. For 2011, we expect to add a modest 

number of new banking centers, again reflecting the 

economic environment. 

  We continue to leverage our standing as the 

largest U.S. banking company headquartered in 

Texas, a state with a growing population and a diverse 

economy. Home prices have remained relatively stable 

in Texas, and it continues to have more Fortune 1000 

companies than any other state. We opened our 95th 

banking center in Texas in December. When the 

Relationships really do matter. We know 

of Houston, Texas. The acquisition is 

bank. Like Comerica, the Sterling team 

aforementioned acquisition of Sterling Bancshares is 

and understand our customers, and offer 

a strong strategic fit, accelerates our 

shares our focus on relationship banking 

completed, Comerica would grow to have 152 banking 

solutions that help meet their distinct 

growth in Texas and maintains our 

and serving the community.

centers in Texas.

financial needs. This strong focus on 

capital strength. Sterling, with $5.2 billion 

Turning briefly to the economy, the 

California is a state that is showing signs of 

customers, especially during one of the 

in assets, has a very appealing branch 

recovery now underway in our nation is 

strengthening, with more stability in home prices, and 

most turbulent economic times in our 

network, which almost doubles our 

sluggish and uneven. Persistently high 

strong trade data that helps offset weak employment growth. 

nation’s history, reinforced the concept of

presence in Houston, provides us entry 

unemployment and a slowly stabilizing 

We celebrated the opening of our 100th banking center in 

‘collective success.’ That is, when our 

into the fast growing San Antonio market, 

housing market have made this particular 

California in 2010. Shortly after the October grand opening, 

customers succeed, so do we. Following 

and complements our banking center 

recovery a modest one, compared to the 

we received an award from the South Pasadena Preservation 

this letter, you will find some examples 

network in Dallas-Fort Worth. On a pro 

more robust recoveries following previous 

Foundation for restoring the building back to the look and feel 

of customers we’ve helped along the road 

forma basis, the acquisition bolsters our 

recessions. Our customers, many of whom 

of the original 1920s architecture. 

to success.

presence in Texas, one of this nation’s 

are business owners and managers, 

Falling unemployment levels and an improving automotive 

I am pleased to report that Comerica’s 

most attractive growth markets, and would 

remained understandably cautious in 

sector are helping Michigan’s economy rebound. We believe we 

common stock rose 43 percent in 2010, 

move us from 10th to 6th in deposit market 

2010. Uncertainties regarding the 

are doing a good job working with our customers in that state, 

outperforming many of our peers. We were 

share in the state.* We believe this gives 

economy, taxes, healthcare costs and 

where we have had a continuous presence since 1849. We are 

once again among the top performers in 

us the ability to leverage additional 

government regulations put a damper on 

particularly pleased with the credit performance there, given the 

the 24-bank Keefe Bank Index (BKX), 

marketing capacity to offer a wide array 

hiring and spending. As the economy 

economic challenges the state has been facing for a number of 

while ranking no. 83 among all S&P 500 

of products through a larger distribution 

continues to improve, Comerica is well 

years. Michigan is clearly on its way back, and that is good news 

companies. Our stock has performed very 

network, particularly to middle market and 

positioned for growth. 

for Comerica and the nation.

well throughout this economic cycle, 

small business companies.

increasing 113 percent from January 1, 

  We believe the transaction value is fair 

2009, through year-end 2010.

and reflects the scarcity value of the 

company. There have not been, nor are 

We are among the 25 largest U.S. banking 

Comerica took a number of actions in 2010 that highlighted our 

there expected to be, many banks in 

companies, based on assets of $53.7 

strong capital position. First, we ended our participation in the U.S. 

Texas that have the size, fit and focus of 

billion at year-end 2010. You can see on 

Treasury’s Capital Purchase Program. As you'll recall, in November 

a bank like Sterling. The transaction 

these pages that our 443 U.S. banking 

2008 we issued $2.25 billion of preferred stock and a related warrant 

has been approved by the Comerica 

centers (at December 31, 2010) are 

to the U.S. Department of the Treasury. On March 17, 2010, we 

and Sterling Boards of Directors, and 

located in the urban areas of our five 

announced that we had redeemed all of the preferred shares. In short, 

is expected to be completed by 

primary markets, where there is an 

we repaid our ‘TARP’ investment. In doing so, we eliminated the annual 

I am also pleased we were able to 

mid-year 2011, subject to customary 

abundance of businesses of all sizes, 

$134 million preferred stock dividend.

double the quarterly cash dividend for 

closing conditions, including approval by 

particularly small and middle market 

On October 1, 2010, we fully redeemed all $500 million of our trust 

common stock to $0.10 per share. I’ll 

Sterling shareholders and regulatory 

companies, and where we can leverage 

preferred securities. The Dodd-Frank Wall Street Reform and Consumer 

discuss our solid capital position in more 

approvals. We look forward to a seamless 

our personal banking and wealth 

Protection Act, signed into law on July 21, 2010, changed the treatment 

detail shortly.

integration and offering Sterling customers 

management services.

of this type of security, so it was no longer an effective form of capital for us. 

On January 18, 2011, we announced 

the resources of a larger bank, with the 

In light of the current economy, we 

Our proactive action in addressing this change in regulation eliminated this 

plans to acquire Sterling Bancshares, Inc., 

continued touch and feel of a community 

slowed our banking center expansion 

higher-cost funding.

Letter to Shareholders

For 2010, we reported net income 

muted by the planned and continued 

who retired at the end of January 2011. 

million federal benefit recipients have 

Magazine as one of the 40 best 

  We believe we are uniquely 

attributable to common shares of $153 

reduction of loans in our Commercial 

Combining the leadership of the two 

signed up for the DirectExpress® card 

companies for diversity, and were named 

positioned as the only bank in our peer 

million, or $0.88 per diluted share. These 

Real Estate business line.

organizations, as we did, provides 

since it was introduced in 2008.

by Hispanic Business Magazine to its

group to have redeemed TARP and 

results were significantly better than what 

As businesses continue to expand 

improved leverage opportunities, while 

  Within Wealth & Institutional 

 “Diversity Elite 60” list, and by Latina Style 

eliminated trust preferred securities from 

we saw in 2009. In large part, this is 

their inventories and sales volumes, and 

enabling us to offer a wide spectrum of 

Management, we enhanced the lineup 

Magazine to its “Latina Style 50” list. We 

its capital structure.

attributable to a decrease of $602 million 

as the economy continues its moderate 

products and services to our customers. 

of our proprietary investment advisory 

certainly appreciate the recognition.

Then, on November 16, 2010, we 

in the provision for loan losses in 2010, 

recovery, we believe we are ideally 

Lars Anderson joined us in December 

products and continued to add new 

  We continued to make solid progress 

announced that the Board of Directors 

compared to 2009.

positioned to capitalize on the increased 

as our new Vice Chairman, The Business 

advisors in our key growth markets.

on our corporate sustainability initiatives in 

of Comerica Incorporated had increased 

All of our key credit metrics moved in 

lending opportunities.

the quarterly cash dividend for common 

the right direction in 2010, with decreases 

  We continued to have very strong 

stock to $0.10 per share. The overall 

in net charge-offs, watch list loans and 

deposit generation in 2010, with average 

positive trajectory of our financial 

nonaccrual loans, which led to a 

core deposits increasing $3.4 billion.

performance, which is summarized below, 

significant reduction to the provision 

Our net interest margin expanded to 

Bank. Lars will succeed Dale Greene, 

Executive Vice President, The Business 

Bank, who will retire on his normal 

retirement date in the third quarter of 

2011. Lars comes to Comerica from a 

And a strong commitment 

to community, diversity and 

sustainability.

2010. We completed a range of projects 

designed to improve our environmental 

performance and increase efficiency— 

including efforts to reduce our energy use 

and greenhouse gas emissions, to reduce 

coupled with the modestly improving 

for loan losses. Comerica’s credit 

3.24 percent in 2010, compared to 2.72 

large regional bank, where he had 

Comerica provided some $10 million to 

waste and expand our recycling programs, 

economic environment, enabled us to 

performance throughout this cycle has 

percent in 2009, primarily due to changes 

responsibility for a multi-billion dollar 

not-for-profit organizations nationwide in 

to build new ‘green’ banking centers, and 

increase the quarterly cash dividend.

been among the best in our peer group. 

in the funding mix, including a continued 

loan portfolio, including 12 regional 

2010. In addition, our employees raised 

to improve the coverage and accuracy of 

The board also authorized the 

We believe it is a reflection of our strong 

shift in funding sources toward lower-cost 

banks. His impressive background and 

more than $2.1 million for the United Way 

our sustainability tracking and reporting 

purchase of up to 12.6 million shares, or 

credit culture and the diligent credit 

funds, and improved loan spreads. We 

credentials will further enhance 

and Black United Fund, and they donated 

systems. In addition, we continue to be 

about 7 percent of Comerica’s outstanding 

quality review processes we employ.

believe our balance sheet is well 

Comerica’s reputation as a business 

their personal time and talents with some 

focused on developing deposit and loan 

common stock at September 30, 2010, as 

  Whereas weak loan demand was 

positioned for a rising rate environment.

bank of choice.

60,000 volunteer hours in 2010.

relationships with “clean tech” and “green 

well as outstanding warrants to purchase 

evident in 2010, due to the continued 

  We continued to focus on expense 

up to 11.5 million shares of Comerica's 

caution of our customers in a slowly 

management in 2010. Noninterest 

common stock. The share repurchases 

improving economy, as the year 

expenses decreased $10 million from 

commenced in 2011 and will proceed in 

progressed we saw many encouraging and 

2009. Full-time equivalent staff decreased 

program “Outstanding.” The 

a cautious manner, recognizing industry 

positive signs. By year-end, our customers 

by 4 percent from 2009, even as we 

Within our Retail Bank, we launched a 

rating considers three elements: 

uncertainty on regulatory capital standards.

were conveying a more positive and 

added 13 new banking centers in 2010.

new Mobile Banking service in 2010, 

loans made to families with low or 

The right products and 

services…

In December 2010, the Federal 

tech” companies.

Reserve Bank of Dallas rated Comerica 

In closing, Comerica remains focused 

Bank’s Community Reinvestment Act 

on executing its strategy and delivering 

confident tone. Throughout our 

  We believe our core fundamentals will 

and began offering consumers ITAC 

moderate incomes; investments in 

geographic footprint, our relationship 

continue to show improvement in 2011.

Sentinel®, an identity theft prevention 

low or moderate income 

Continued improvement in 
financial performance…

Comerica’s 2010 financial performance 

At year-end 2010, our loan pipeline was 

managers reported a growing sense of 

optimism among customers and prospects. 

With the right people…

service. As a result of the latter, the 

communities; and services extended 

Financial Services Roundtable presented 

to individuals and businesses in such 

Comerica with its first ITAC Excellence in 

communities. In all individual elements, 

outstanding customer service. We have 

was highlighted by our strong credit 

strong. Also at year-end, period-end loan 

Among notable personnel announcements 

Consumer Protection Award in 2010. 

Comerica received an “Outstanding” score. 

weathered the challenging economic cycle 

performance relative to our peers, solid 

outstandings were stable, with commercial 

in 2010, Curt Farmer, Executive Vice 

Comerica is a charter member of ITAC 

This is the 8th consecutive “Outstanding” 

well, maintaining strong liquidity, solid 

customer deposit generation capabilities, 

loans up more than $700 million, or about 

President, assumed leadership of both the 

(Identity Theft Assistance Center), which 

CRA rating that our bank has achieved.

capital, tight control of expenses, and with 

increased net interest margin and careful 

three percent, compared to the third 

Retail Bank and Wealth & Institutional 

has helped more than 75,000 consumers 

Comerica continued to receive 

credit metrics that are among the best in 

management of expenses.

quarter of 2010. These increases were 

Management, succeeding Connie Beck, 

recover from identity theft. And, in Texas, 

recognition for its commitment to diversity 

our peer group. Going forward, I believe 

At-a-Glance

Net Loan Charge-Offs as a 
Percentage of Average Total Loans

Total Comerica
Peer Group Average

2.62%

2.55%

1.50%

1.88%

1.39%

0.47%

0.91%

0.25%

Average Core Deposits
in millions of dollars

38,718

36,454

35,300

34,362

35,335

0.13% 0.30%
  2006 
2007 

2008 

2009 

2010

  2006 

2007 

2008 

2009 

2010

Incentive Peers as defined in Comerica’s 2010 Proxy Statement (Peer List as of  December 31, 2010)
Peer Source:  SNL Financial

Core deposits exclude other time deposits and foreign office time deposits

we launched a new Healthcare Profession 

in 2010, including being named by 

we are ideally positioned for future growth, 

lending group to take advantage of the 

DiversityInc Magazine as one of the top 

with a strong relationship focus, and with 

significant opportunities in this important 

50 companies for diversity and top 10 

the right people, products and services in 

and growing segment of our economy.

companies for executive women. We also 

place to make a positive difference for our 

  Within our Business Bank, our 

were again named by Black Enterprise 

customers, shareholders and employees.

Treasury Management Services area 

announced a significant technology 

upgrade to our TM Connect Web 

platform, which now provides one of the 

best cash management solutions in the 

market for businesses looking to initiate, 

receive, and manage online payments. 

We also continued to serve as the 

financial agent to the U.S. Treasury 

Department for its DirectExpress® Debit 

MasterCard® program. More than 1.5 

Sincerely,

Ralph W. Babb Jr.

Chairman and Chief Executive Officer

04

COllective Success

Comerica Incorporated  2010 Annual Report

05

In closing, Comerica remains 

focused on executing its strategy 

and delivering outstanding 

customer service. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
program, adding only 13 new banking centers 

to our network in 2010, mostly in Texas and 

California. In all, we have added 137 new banking 

centers since launching the program in late 2004. 

These new banking centers have provided us more 

than $3.2 billion in deposits and thousands of new 

customers. For 2011, we expect to add a modest 

number of new banking centers, again reflecting the 

economic environment. 

  We continue to leverage our standing as the 

largest U.S. banking company headquartered in 

Texas, a state with a growing population and a diverse 

economy. Home prices have remained relatively stable 

in Texas, and it continues to have more Fortune 1000 

companies than any other state. We opened our 95th 

banking center in Texas in December. When the 

Relationships really do matter. We know 

of Houston, Texas. The acquisition is 

bank. Like Comerica, the Sterling team 

aforementioned acquisition of Sterling Bancshares is 

and understand our customers, and offer 

a strong strategic fit, accelerates our 

shares our focus on relationship banking 

completed, Comerica would grow to have 152 banking 

solutions that help meet their distinct 

growth in Texas and maintains our 

and serving the community.

centers in Texas.

financial needs. This strong focus on 

capital strength. Sterling, with $5.2 billion 

Turning briefly to the economy, the 

California is a state that is showing signs of 

customers, especially during one of the 

in assets, has a very appealing branch 

recovery now underway in our nation is 

strengthening, with more stability in home prices, and 

most turbulent economic times in our 

network, which almost doubles our 

sluggish and uneven. Persistently high 

strong trade data that helps offset weak employment growth. 

nation’s history, reinforced the concept of

presence in Houston, provides us entry 

unemployment and a slowly stabilizing 

We celebrated the opening of our 100th banking center in 

‘collective success.’ That is, when our 

into the fast growing San Antonio market, 

housing market have made this particular 

California in 2010. Shortly after the October grand opening, 

customers succeed, so do we. Following 

and complements our banking center 

recovery a modest one, compared to the 

we received an award from the South Pasadena Preservation 

this letter, you will find some examples 

network in Dallas-Fort Worth. On a pro 

more robust recoveries following previous 

Foundation for restoring the building back to the look and feel 

of customers we’ve helped along the road 

forma basis, the acquisition bolsters our 

recessions. Our customers, many of whom 

of the original 1920s architecture. 

to success.

presence in Texas, one of this nation’s 

are business owners and managers, 

Falling unemployment levels and an improving automotive 

I am pleased to report that Comerica’s 

most attractive growth markets, and would 

remained understandably cautious in 

sector are helping Michigan’s economy rebound. We believe we 

common stock rose 43 percent in 2010, 

move us from 10th to 6th in deposit market 

2010. Uncertainties regarding the 

are doing a good job working with our customers in that state, 

outperforming many of our peers. We were 

share in the state.* We believe this gives 

economy, taxes, healthcare costs and 

where we have had a continuous presence since 1849. We are 

once again among the top performers in 

us the ability to leverage additional 

government regulations put a damper on 

particularly pleased with the credit performance there, given the 

the 24-bank Keefe Bank Index (BKX), 

marketing capacity to offer a wide array 

hiring and spending. As the economy 

economic challenges the state has been facing for a number of 

while ranking no. 83 among all S&P 500 

of products through a larger distribution 

continues to improve, Comerica is well 

years. Michigan is clearly on its way back, and that is good news 

companies. Our stock has performed very 

network, particularly to middle market and 

positioned for growth. 

for Comerica and the nation.

well throughout this economic cycle, 

small business companies.

increasing 113 percent from January 1, 

  We believe the transaction value is fair 

2009, through year-end 2010.

and reflects the scarcity value of the 

company. There have not been, nor are 

We are among the 25 largest U.S. banking 

Comerica took a number of actions in 2010 that highlighted our 

there expected to be, many banks in 

companies, based on assets of $53.7 

strong capital position. First, we ended our participation in the U.S. 

Texas that have the size, fit and focus of 

billion at year-end 2010. You can see on 

Treasury’s Capital Purchase Program. As you'll recall, in November 

a bank like Sterling. The transaction 

these pages that our 443 U.S. banking 

2008 we issued $2.25 billion of preferred stock and a related warrant 

has been approved by the Comerica 

centers (at December 31, 2010) are 

to the U.S. Department of the Treasury. On March 17, 2010, we 

and Sterling Boards of Directors, and 

located in the urban areas of our five 

announced that we had redeemed all of the preferred shares. In short, 

is expected to be completed by 

primary markets, where there is an 

we repaid our ‘TARP’ investment. In doing so, we eliminated the annual 

I am also pleased we were able to 

mid-year 2011, subject to customary 

abundance of businesses of all sizes, 

$134 million preferred stock dividend.

double the quarterly cash dividend for 

closing conditions, including approval by 

particularly small and middle market 

On October 1, 2010, we fully redeemed all $500 million of our trust 

common stock to $0.10 per share. I’ll 

Sterling shareholders and regulatory 

companies, and where we can leverage 

preferred securities. The Dodd-Frank Wall Street Reform and Consumer 

discuss our solid capital position in more 

approvals. We look forward to a seamless 

our personal banking and wealth 

Protection Act, signed into law on July 21, 2010, changed the treatment 

detail shortly.

integration and offering Sterling customers 

management services.

of this type of security, so it was no longer an effective form of capital for us. 

On January 18, 2011, we announced 

the resources of a larger bank, with the 

In light of the current economy, we 

Our proactive action in addressing this change in regulation eliminated this 

plans to acquire Sterling Bancshares, Inc., 

continued touch and feel of a community 

slowed our banking center expansion 

higher-cost funding.

Letter to Shareholders

For 2010, we reported net income 

muted by the planned and continued 

who retired at the end of January 2011. 

million federal benefit recipients have 

Magazine as one of the 40 best 

  We believe we are uniquely 

attributable to common shares of $153 

reduction of loans in our Commercial 

Combining the leadership of the two 

signed up for the DirectExpress® card 

companies for diversity, and were named 

positioned as the only bank in our peer 

million, or $0.88 per diluted share. These 

Real Estate business line.

organizations, as we did, provides 

since it was introduced in 2008.

group to have redeemed TARP and 

results were significantly better than what 

As businesses continue to expand 

improved leverage opportunities, while 

  Within Wealth & Institutional 

eliminated trust preferred securities from 

we saw in 2009. In large part, this is 

their inventories and sales volumes, and 

enabling us to offer a wide spectrum of 

Management, we enhanced the lineup 

by Hispanic Business Magazine to its
 “Diversity Elite 60” list, and by Latina Style 
Magazine to its “Latina Style 50” list. We 

its capital structure.

attributable to a decrease of $602 million 

as the economy continues its moderate 

products and services to our customers. 

of our proprietary investment advisory 

certainly appreciate the recognition.

Then, on November 16, 2010, we 

in the provision for loan losses in 2010, 

recovery, we believe we are ideally 

Lars Anderson joined us in December 

products and continued to add new 

  We continued to make solid progress 

announced that the Board of Directors 

compared to 2009.

positioned to capitalize on the increased 

as our new Vice Chairman, The Business 

advisors in our key growth markets.

on our corporate sustainability initiatives in 

of Comerica Incorporated had increased 

All of our key credit metrics moved in 

lending opportunities.

the quarterly cash dividend for common 

the right direction in 2010, with decreases 

  We continued to have very strong 

stock to $0.10 per share. The overall 

in net charge-offs, watch list loans and 

deposit generation in 2010, with average 

positive trajectory of our financial 

nonaccrual loans, which led to a 

core deposits increasing $3.4 billion.

performance, which is summarized below, 

significant reduction to the provision 

Our net interest margin expanded to 

Bank. Lars will succeed Dale Greene, 

Executive Vice President, The Business 

Bank, who will retire on his normal 

retirement date in the third quarter of 

2011. Lars comes to Comerica from a 

And a strong commitment 
to community, diversity and 
sustainability.

2010. We completed a range of projects 

designed to improve our environmental 

performance and increase efficiency— 

including efforts to reduce our energy use 

and greenhouse gas emissions, to reduce 

coupled with the modestly improving 

for loan losses. Comerica’s credit 

3.24 percent in 2010, compared to 2.72 

large regional bank, where he had 

Comerica provided some $10 million to 

waste and expand our recycling programs, 

economic environment, enabled us to 

performance throughout this cycle has 

percent in 2009, primarily due to changes 

responsibility for a multi-billion dollar 

not-for-profit organizations nationwide in 

to build new ‘green’ banking centers, and 

increase the quarterly cash dividend.

been among the best in our peer group. 

in the funding mix, including a continued 

loan portfolio, including 12 regional 

2010. In addition, our employees raised 

to improve the coverage and accuracy of 

The board also authorized the 

We believe it is a reflection of our strong 

shift in funding sources toward lower-cost 

banks. His impressive background and 

more than $2.1 million for the United Way 

our sustainability tracking and reporting 

purchase of up to 12.6 million shares, or 

credit culture and the diligent credit 

funds, and improved loan spreads. We 

credentials will further enhance 

and Black United Fund, and they donated 

systems. In addition, we continue to be 

about 7 percent of Comerica’s outstanding 

quality review processes we employ.

believe our balance sheet is well 

Comerica’s reputation as a business 

their personal time and talents with some 

focused on developing deposit and loan 

common stock at September 30, 2010, as 

  Whereas weak loan demand was 

positioned for a rising rate environment.

bank of choice.

60,000 volunteer hours in 2010.

relationships with “clean tech” and “green 

well as outstanding warrants to purchase 

evident in 2010, due to the continued 

  We continued to focus on expense 

up to 11.5 million shares of Comerica's 

caution of our customers in a slowly 

management in 2010. Noninterest 

common stock. The share repurchases 

improving economy, as the year 

expenses decreased $10 million from 

commenced in 2011 and will proceed in 

progressed we saw many encouraging and 

2009. Full-time equivalent staff decreased 

The right products and 
services…

In December 2010, the Federal 

tech” companies.

Reserve Bank of Dallas rated Comerica 

In closing, Comerica remains focused 

Bank’s Community Reinvestment Act 

on executing its strategy and delivering 

program “Outstanding.” The 

Continued improvement in 

financial performance…

managers reported a growing sense of 

optimism among customers and prospects. 

With the right people…

a cautious manner, recognizing industry 

positive signs. By year-end, our customers 

by 4 percent from 2009, even as we 

Within our Retail Bank, we launched a 

rating considers three elements: 

uncertainty on regulatory capital standards.

were conveying a more positive and 

added 13 new banking centers in 2010.

new Mobile Banking service in 2010, 

loans made to families with low or 

confident tone. Throughout our 

  We believe our core fundamentals will 

and began offering consumers ITAC 

moderate incomes; investments in 

geographic footprint, our relationship 

continue to show improvement in 2011.

Sentinel®, an identity theft prevention 

low or moderate income 

service. As a result of the latter, the 

communities; and services extended 

Financial Services Roundtable presented 

to individuals and businesses in such 

In closing, Comerica remains 
focused on executing its strategy 
and delivering outstanding 
customer service. 

Comerica’s 2010 financial performance 

At year-end 2010, our loan pipeline was 

Comerica with its first ITAC Excellence in 

communities. In all individual elements, 

outstanding customer service. We have 

was highlighted by our strong credit 

strong. Also at year-end, period-end loan 

Among notable personnel announcements 

Consumer Protection Award in 2010. 

Comerica received an “Outstanding” score. 

weathered the challenging economic cycle 

performance relative to our peers, solid 

outstandings were stable, with commercial 

in 2010, Curt Farmer, Executive Vice 

Comerica is a charter member of ITAC 

This is the 8th consecutive “Outstanding” 

well, maintaining strong liquidity, solid 

customer deposit generation capabilities, 

loans up more than $700 million, or about 

President, assumed leadership of both the 

(Identity Theft Assistance Center), which 

CRA rating that our bank has achieved.

capital, tight control of expenses, and with 

increased net interest margin and careful 

three percent, compared to the third 

Retail Bank and Wealth & Institutional 

has helped more than 75,000 consumers 

Comerica continued to receive 

credit metrics that are among the best in 

management of expenses.

quarter of 2010. These increases were 

Management, succeeding Connie Beck, 

recover from identity theft. And, in Texas, 

recognition for its commitment to diversity 

our peer group. Going forward, I believe 

At-a-Glance

Net Loan Charge-Offs as a 

Percentage of Average Total Loans

Total Comerica

Peer Group Average

2.62%

2.55%

1.50%

1.88%

1.39%

0.47%

0.91%

0.25%

0.13% 0.30%

Average Core Deposits

in millions of dollars

38,718

36,454

35,300

35,335

34,362

  2006 

2007 

2008 

2009 

2010

  2006 

2007 

2008 

2009 

2010

Incentive Peers as defined in Comerica’s 2010 Proxy Statement (Peer List as of  December 31, 2010)

Core deposits exclude other time deposits and foreign office time deposits

Peer Source:  SNL Financial

04

COllective Success

we launched a new Healthcare Profession 

in 2010, including being named by 

we are ideally positioned for future growth, 

lending group to take advantage of the 

significant opportunities in this important 

DiversityInc Magazine as one of the top 
50 companies for diversity and top 10 

with a strong relationship focus, and with 

the right people, products and services in 

and growing segment of our economy.

companies for executive women. We also 

place to make a positive difference for our 

  Within our Business Bank, our 

were again named by Black Enterprise 

customers, shareholders and employees.

Treasury Management Services area 

announced a significant technology 

upgrade to our TM Connect Web 

platform, which now provides one of the 

best cash management solutions in the 

market for businesses looking to initiate, 

receive, and manage online payments. 

We also continued to serve as the 

financial agent to the U.S. Treasury 

Department for its DirectExpress® Debit 

MasterCard® program. More than 1.5 

Sincerely,

Ralph W. Babb Jr.
Chairman and Chief Executive Officer

Comerica Incorporated  2010 Annual Report

05

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
COllective Success

Comerica is in business to help people and businesses 
be successful. That’s our vision, which comes to life in 
our “Ask Comerica” testimonial campaign.  

How did AirBorn keep flying through choppy weather?

1

When AirBorn flew into a turbulent economy, they turned to Comerica to 
help. Working together to restructure the company, Comerica helped put 
together a 100 percent employee stock option program that positioned 
AirBorn to meet their aggressive growth plans. Several strategic 
acquisitions later, AirBorn has seen its revenue double every 
five years, while expanding its facilities around the globe.

Georgetown, TX

How did Lone Star help build low-income 
communities when the economy fell apart?

2

When you’re in the business of investing in low-income 
communities, capital is your lifeblood. But when the recession took 
hold, the flow of capital slowed to a trickle. At Comerica, we didn’t 
turn our back on Lone Star CRA Fund LP, we turned on a dime to 
provide them with the capital they needed to continue investing in 
our communities. By collaborating together, we’ve been able to 
stand by those who need it most.

Dallas, TX

How is WOOT able to sell something 
you never knew you needed, every day?

3

A frog-shaped leak detector. A robotic vacuum. Bacon salt. A USB 
missile launcher. When you’re in the business of selling something 
different, every day, flexibility is the currency of opportunity. So 
when WOOT needed financing, fast, Comerica was there in no 
time. We quickly put together a plan that showed WOOT how they 
could tap into a flexible line of credit on a moment’s notice. With 
the right financing available at the right time, WOOT has been 
able to grow every year since 2005, and won the “Dallas 100” 

and “Inc. 100” fastest growing company awards.

Carrollton, TX

4

How did Champion Fiberglass 

expand production while the 

economy was constricting?

After consecutive years of record growth, Champion Fiberglass 

faced a real challenge. It was already running 24/7 just to keep up 

current production. Short of adding an eighth day in the week, adding 

another shift wasn’t an option. If Champion Fiberglass were going to 

maintain their leadership position, they would have to expand 

operations. In the face of the tightest capital market in recent history, 

Champion turned to Comerica. In a short time, we put together the 

support and financing they needed to help the market leaders 

double their manufacturing capacity.

Spring, TX

5

How did charlieuniformtango 

expand their ability to CUT?

It takes creative vision to compete in advertising and film post production. 

|t takes business foresight to succeed. When charlieuniformtango saw an 

opportunity to expand their editorial resources, they looked for a bank that 

could bring more than short-term capital to the picture. They looked for a 

bank with long-term vision. Comerica Bank made the final cut and put 

together a dedicated team that worked hand-in-hand to help 

charlieuniformtango grow into the number one post production 

house in the Southwest.

Dallas, TX

6

How did Guitar Salon hit a 

high note in a flat economy?

When Guitar Salon International outgrew their current bank, 

they needed a business partner that was big enough to guide 

them through a challenging economy, but small enough to sit 

down and jam with them. At Comerica, we quickly put together 

a dedicated team of specialists that knew how to keep in tune 

with Guitar Salon’s unique needs. By immersing ourselves in 

their business, we developed the right ensemble of credit, 

cash management and international trade services that helped 

Guitar Salon strengthen its position in a weakened economy.

Santa Monica, CA   

06

COllective Success

Comerica Incorporated  2010 Annual Report

07

COllective Success

Comerica is in business to help people and businesses 

be successful. That’s our vision, which comes to life in 

our “Ask Comerica” testimonial campaign.  

How did AirBorn keep flying through choppy weather?

1

When AirBorn flew into a turbulent economy, they turned to Comerica to 

help. Working together to restructure the company, Comerica helped put 

together a 100 percent employee stock option program that positioned 

AirBorn to meet their aggressive growth plans. Several strategic 

acquisitions later, AirBorn has seen its revenue double every 

five years, while expanding its facilities around the globe.

Georgetown, TX

How did Lone Star help build low-income 

communities when the economy fell apart?

2

When you’re in the business of investing in low-income 

communities, capital is your lifeblood. But when the recession took 

hold, the flow of capital slowed to a trickle. At Comerica, we didn’t 

turn our back on Lone Star CRA Fund LP, we turned on a dime to 

provide them with the capital they needed to continue investing in 

our communities. By collaborating together, we’ve been able to 

stand by those who need it most.

Dallas, TX

How is WOOT able to sell something 

you never knew you needed, every day?

3

A frog-shaped leak detector. A robotic vacuum. Bacon salt. A USB 

missile launcher. When you’re in the business of selling something 

different, every day, flexibility is the currency of opportunity. So 

when WOOT needed financing, fast, Comerica was there in no 

time. We quickly put together a plan that showed WOOT how they 

could tap into a flexible line of credit on a moment’s notice. With 

the right financing available at the right time, WOOT has been 

able to grow every year since 2005, and won the “Dallas 100” 

and “Inc. 100” fastest growing company awards.

Carrollton, TX

4

How did Champion Fiberglass 
expand production while the 
economy was constricting?

After consecutive years of record growth, Champion Fiberglass 
faced a real challenge. It was already running 24/7 just to keep up 
current production. Short of adding an eighth day in the week, adding 
another shift wasn’t an option. If Champion Fiberglass were going to 
maintain their leadership position, they would have to expand 
operations. In the face of the tightest capital market in recent history, 
Champion turned to Comerica. In a short time, we put together the 
support and financing they needed to help the market leaders 
double their manufacturing capacity.

Spring, TX

5

How did charlieuniformtango 
expand their ability to CUT?

It takes creative vision to compete in advertising and film post production. 
|t takes business foresight to succeed. When charlieuniformtango saw an 
opportunity to expand their editorial resources, they looked for a bank that 
could bring more than short-term capital to the picture. They looked for a 
bank with long-term vision. Comerica Bank made the final cut and put 
together a dedicated team that worked hand-in-hand to help 
charlieuniformtango grow into the number one post production 
house in the Southwest.

Dallas, TX

6

How did Guitar Salon hit a 
high note in a flat economy?

When Guitar Salon International outgrew their current bank, 
they needed a business partner that was big enough to guide 
them through a challenging economy, but small enough to sit 
down and jam with them. At Comerica, we quickly put together 
a dedicated team of specialists that knew how to keep in tune 
with Guitar Salon’s unique needs. By immersing ourselves in 
their business, we developed the right ensemble of credit, 
cash management and international trade services that helped 
Guitar Salon strengthen its position in a weakened economy.

Santa Monica, CA   

06

COllective Success

Comerica Incorporated  2010 Annual Report

07

7

When other banks dug in their heels, where 
did B&B Footwear turn for credit? 

While most viewed the fashion industry as a little too “fickle to 
finance,” at Comerica, we saw a sure thing in B&B Footwear. 
The economy may have been slowing, but to us, B&B was on a 
fast-track for growth. We believed in their long-term vision and in 
a short time came up with a plan that put a flexible line of credit 
within their reach. Four years and 120 new employees later, we’re 
proud to be partners with B&B Footwear. 

Los Angeles, CA

How did ASI pave over 

a weak economy?

10

Since the mid ‘80s, Asphalt Specialists Incorporated have been helping 

pave the way for growth. But when the recession caused the ground to 

shift, ASI turned to their long-term partner Comerica to assist them in 

weathering the economic challenges. In the face of a tight credit market 

and slowing sales, we worked hand-in-hand with ASI to help find 

efficiencies, tighten processes, and develop a plan that ensure their 

access to capital.

Pontiac, MI

8

How did Wellington Foods expand
while the credit market was on a diet?

How has Stardock battled its way 

through a challenging economy?

11

When family-owned Wellington Foods outgrew the four buildings they 
occupied, they had two choices: slow production or find a new facility 
that would give them the space they needed to expand. They found the 
space, but finding a line of credit with the right terms in a tight economy 
was anything but a picnic. After shopping a half-dozen banks, they 
turned to their decade-long partner, Comerica. Knowing the deal 
needed to close in an accelerated timeframe, we worked day and night 
to put together a fully baked program that gave Wellington Foods the 
flexibility they needed and the terms their bottom line demanded. 
Problem solved.

Corona, CA

When Stardock founder and CEO Brad Wardell realized his 

company was best served when he focused on the technology, 

he turned to Comerica to focus on the business. We put together 

a complete team of banking professionals and surrounded him 

with the know-how he needed. Not only did Comerica help 

Stardock grow into one of the leading developers of PC gaming 

software, our wealth planners also helped Brad strengthen his 

financial future.

Plymouth, MI

9

How did Plum Market plant 
its roots in Michigan?

How did Michigan Sugar Company 

12

sweeten its market share?

They had the idea, the experience and the passion to launch a 
specialty grocery store like no other. The only thing Plum Market 
needed was a bank willing to take a chance on a “budding” 
upstart. At Comerica, we saw a management team ripe with 
experience and a business model plump with potential. In no 
time, we developed a flexible financing structure that has 
allowed Plum Market to stay private and grow organically.

Farmington Hills, MI

When Michigan Sugar Company saw the opportunity to 

acquire their largest competitor, they turned to Comerica to 

help them navigate through the sticky process. As a co-op 

made up of independent growers, Michigan Sugar needed a 

bank that truly understood the complexity of their business. 

In no time, we dug deep to uncover sweet opportunities that 

allowed Michigan Sugar to refinance a previous deal in 

order to fund the acquisition.

Bay City, MI

08

COllective Success

Comerica Incorporated  2010 Annual Report

09

7

When other banks dug in their heels, where 

did B&B Footwear turn for credit? 

While most viewed the fashion industry as a little too “fickle to 

finance,” at Comerica, we saw a sure thing in B&B Footwear. 

The economy may have been slowing, but to us, B&B was on a 

fast-track for growth. We believed in their long-term vision and in 

a short time came up with a plan that put a flexible line of credit 

within their reach. Four years and 120 new employees later, we’re 

proud to be partners with B&B Footwear. 

How did ASI pave over 
a weak economy?

10

Since the mid ‘80s, Asphalt Specialists Incorporated have been helping 
pave the way for growth. But when the recession caused the ground to 
shift, ASI turned to their long-term partner Comerica to assist them in 
weathering the economic challenges. In the face of a tight credit market 
and slowing sales, we worked hand-in-hand with ASI to help find 
efficiencies, tighten processes, and develop a plan that ensure their 
access to capital.

Los Angeles, CA

Pontiac, MI

8

How did Wellington Foods expand

while the credit market was on a diet?

How has Stardock battled its way 
through a challenging economy?

11

When family-owned Wellington Foods outgrew the four buildings they 

occupied, they had two choices: slow production or find a new facility 

that would give them the space they needed to expand. They found the 

space, but finding a line of credit with the right terms in a tight economy 

was anything but a picnic. After shopping a half-dozen banks, they 

turned to their decade-long partner, Comerica. Knowing the deal 

needed to close in an accelerated timeframe, we worked day and night 

to put together a fully baked program that gave Wellington Foods the 

flexibility they needed and the terms their bottom line demanded. 

Problem solved.

Corona, CA

When Stardock founder and CEO Brad Wardell realized his 
company was best served when he focused on the technology, 
he turned to Comerica to focus on the business. We put together 
a complete team of banking professionals and surrounded him 
with the know-how he needed. Not only did Comerica help 
Stardock grow into one of the leading developers of PC gaming 
software, our wealth planners also helped Brad strengthen his 
financial future.

Plymouth, MI

9

How did Plum Market plant 

its roots in Michigan?

How did Michigan Sugar Company 
sweeten its market share?

12

They had the idea, the experience and the passion to launch a 

specialty grocery store like no other. The only thing Plum Market 

needed was a bank willing to take a chance on a “budding” 

upstart. At Comerica, we saw a management team ripe with 

experience and a business model plump with potential. In no 

time, we developed a flexible financing structure that has 

allowed Plum Market to stay private and grow organically.

Farmington Hills, MI

When Michigan Sugar Company saw the opportunity to 
acquire their largest competitor, they turned to Comerica to 
help them navigate through the sticky process. As a co-op 
made up of independent growers, Michigan Sugar needed a 
bank that truly understood the complexity of their business. 
In no time, we dug deep to uncover sweet opportunities that 
allowed Michigan Sugar to refinance a previous deal in 
order to fund the acquisition.

Bay City, MI

08

COllective Success

Comerica Incorporated  2010 Annual Report

09

Board of Directors

Ralph W. Babb Jr. (5*)
Chairman and 
Chief Executive Officer
Comerica Incorporated and Comerica Bank

James F. Cordes (1)(3)(4*)
Retired Executive Vice President
The Coastal Corporation
(Diversified Energy Company)

Roger A. Cregg (1)(2)(3)
Executive Vice President and 
Chief Financial Officer
Pulte Homes, Inc.
(National Homebuilding Company)

T. Kevin DeNicola (1*)(3*)(4)
Former Chief Financial Officer
KIOR, Inc.
(Biofuels Company)

Senior Leadership Team

Ralph W. Babb Jr.
Chairman and 
Chief Executive Officer

Lars C. Anderson 
Vice Chairman 
The Business Bank

Elizabeth S. Acton
Executive Vice President
and Chief Financial Officer

Jon W. Bilstrom
Executive Vice President
Governance, Regulatory Relations
& Legal Affairs

Megan D. Burkhart
Executive Vice President and 
Chief Human Resources Officer

David E. Duprey
Executive Vice President
General Auditor

10

COllective Success

Reginald M. Turner Jr. (1)(3)(4**)
Attorney
Clark Hill PLC
(Law Firm)

Nina G. Vaca (1)(3)(4)
Chairman and Chief Executive Officer
Pinnacle Technical Resources, Inc.
(Staffing, Vendor Management and
Information Technology Services Firm)

And Vaca Industries Inc.
(Management Company)

(1)  Audit Committee

(2)  Governance, Compensation and Nominating Committee

(3)  Qualified Legal Compliance Committee

(4)  Enterprise Risk Committee

(5)  Special Preferred Stock Committee

*   Committee Chairperson

**   Committee Vice Chairperson

Jacqueline P. Kane (2)
Senior Vice President of Human
Resources and Corporate Affairs
The Clorox Company
(Manufacturer and Marketer of 
Consumer Products)

Richard G. Lindner (2*)(4)
Senior Executive Vice President and 
Chief Financial Officer
AT&T, Inc.
(Global Telecommunications Company)

Alfred A. Piergallini (2)
Consultant   
Desert Trail Consulting
(Marketing Consulting Organization)

Robert S. Taubman (4)
Chairman, President and
Chief Executive Officer
Taubman Centers, Inc.
(REIT that Owns, Develops and Operates 
Regional Shopping Centers Nationally)

And The Taubman Company
(Shopping Center Management Company
Engaged in Leasing, Management and 
Construction Supervision)

Curtis C. Farmer
Executive Vice President
Retail Bank and Wealth & 
Institutional Management

J. Patrick Faubion 
Executive Vice President and 
President, Comerica Bank - Texas Market

Linda D. Forte
Senior Vice President
Business Affairs

Charles L. Gummer
Executive Vice President and
Chairman, Comerica Bank - Texas Market

John M. Killian
Executive Vice President and 
Chief Credit Officer

Michael H. Michalak
Executive Vice President
Corporate Planning, Development
& Risk Management

J. Michael Fulton
Executive Vice President and
President, Comerica Bank - Western Market

Paul R. Obermeyer 
Executive Vice President and 
Chief Information Officer

Dale E. Greene
Executive Vice President
The Business Bank

Thomas D. Ogden
Executive Vice President and
President, Comerica Bank - Michigan Market

FINANCIAL REVIEW AND REPORTS

Comerica Incorporated and Subsidiaries

Performance Graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Financial Results and Key Corporate Initiatives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Strategic Lines of Business . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Balance Sheet and Capital Funds Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Risk Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

The Dodd-Frank Wall Street Reform and Consumer Protection Act . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Critical Accounting Policies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Supplemental Financial Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Forward-Looking Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Consolidated Financial Statements:

Consolidated Balance Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Consolidated Statements of Income . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Consolidated Statements of Changes in Shareholders’ Equity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Consolidated Statements of Cash Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Notes to Consolidated Financial Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12

14

15

26

31

38

60

60

69

70

72

73

74

75

76

Report of Management

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

147

Reports of Independent Registered Public Accounting Firm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

148

Historical Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

150

11

PERFORMANCE GRAPH

Comparison of Five Year Cumulative Total Return
Among Comerica Incorporated, Keefe Bank Index, and S&P 500 Index
(Assumes $100 Invested on 12/31/05 and Reinvestment of Dividends)

$140

$120

$100

$80

$60

$40

$20

$0

Comerica Incorporated 

Keefe Bank Index

S&P 500 Index

Comerica Incorporated 

Keefe Bank Index

S&P 500 Index

2005

$100

$100

$100

2006

108

117

116

2007

84

91

122

2008

2009

41

48

77

62

47

97

2010

89

58

112

The performance shown on the graph is not necessarily indicative of future performance.

12

SELECTED FINANCIAL DATA

(dollar amounts in millions, except per share data)
Years Ended December 31

EARNINGS SUMMARY
Net interest income
Provision for loan losses
Noninterest income
Noninterest expenses
Provision (benefit) for income taxes
Income from continuing operations
Net income
Preferred stock dividends
Net income (loss) attributable to common shares
PER SHARE OF COMMON STOCK
Diluted earnings per common share:

Income (loss) from continuing operations
Net income (loss)

Cash dividends declared
Common shareholders’ equity
Market value
Average diluted shares (in millions)
YEAR-END BALANCES
Total assets
Total earning assets
Total loans
Total deposits
Total medium and long-term debt
Total common shareholders’ equity
Total shareholders’ equity
AVERAGE BALANCES
Total assets
Total earning assets
Total loans
Total deposits
Total medium and long-term debt
Total common shareholders’ equity
Total shareholders’ equity
CREDIT QUALITY
Total allowance for credit losses
Total nonperforming loans
Foreclosed property
Total nonperforming assets
Net credit-related charge-offs
Net credit-related charge-offs as a percentage of

average total loans

Allowance for loan losses as a percentage of total

period-end loans

Allowance for loan losses as a percentage of total

nonperforming loans

RATIOS
Net interest margin (fully taxable equivalent)
Return on average assets
Return on average common shareholders’ equity
Dividend payout ratio
Average common shareholders’ equity as a

percentage of average assets

Tier 1 common capital as a percentage of risk-

weighted assets (a)

Tier 1 capital as a percentage of risk-weighted assets
Tangible common equity as a percentage of tangible

assets (a)

2010

2009

2008

2007

2006

$

$

$

$

$

1,646
480
789
1,640
55
260
277
123
153

0.78
0.88
0.25
32.82
42.24
173

53,667
49,352
40,236
40,471
6,138
5,793
5,793

55,553
51,004
40,517
39,486
8,684
5,625
6,068

936
1,123
112
1,235
564

$

$

$

$

$

1,567
1,082
1,050
1,650
(131)
16
17
134
(118)

(0.80)
(0.79)
0.20
32.27
29.57
149

59,249
54,558
42,161
39,665
11,060
4,878
7,029

62,809
58,162
46,162
40,091
13,334
4,959
7,099

1,022
1,181
111
1,292
869

$

$

$

$

$

1,815
686
893
1,751
59
212
213
17
192

1.28
1.28
2.31
33.38
19.85
149

67,548
62,374
50,505
41,955
15,053
5,023
7,152

65,185
60,422
51,765
42,003
12,457
5,166
5,442

808
917
66
983
472

$

$

$

$

$

2,003
212
888
1,691
306
682
686
-
680

4.40
4.43
2.56
34.12
43.53
154

62,331
57,448
50,743
44,278
8,821
5,117
5,117

58,574
54,688
49,821
41,934
8,197
5,070
5,070

578
404
19
423
153

$

$

$

$

$

1,983
37
855
1,674
345
782
893
-
886

4.81
5.49
2.36
32.70
58.68
161

58,001
54,052
47,431
44,927
5,949
5,153
5,153

56,579
52,291
47,750
42,074
5,407
5,176
5,176

519
214
18
232
72

1.39 %

1.88 %

0.91 %

0.31 %

0.15 %

2.24

80

3.24 %
0.50
2.74
28.41

10.13

10.13
10.13

10.54

2.34

83

2.72 %
0.03
(2.37)
n/m

7.90

8.18
12.46

7.99

1.52

84

3.02 %
0.33
3.79
179.07

7.93

7.08
10.66

7.21

1.10

138

3.66 %
1.17
13.52
57.79

8.66

6.85
7.51

7.97

1.04

231

3.79 %
1.58
17.24
42.99

9.15

7.54
8.03

8.62

(a) See Supplemental Financial Data section for reconcilements of non-GAAP financial measures.
n/m - not meaningful.

13

2010 FINANCIAL RESULTS AND KEY CORPORATE INITIATIVES

FINANCIAL RESULTS
• Net income was $277 million for 2010, compared to $17 million for 2009. Net income attributable to
common shares was $153 million for 2010, compared to a net loss attributable to common shares of $118
million for 2009. Included in the net income (loss) attributable to common shares were preferred dividends of
$123 million and $134 million in 2010 and 2009, respectively. Net income per diluted common share was
$0.88 for 2010, compared to a net loss per diluted common share of $0.79 for 2009. The most significant
items contributing to the increase in net income are described below.
The provision for loan losses decreased $602 million in 2010, compared to 2009, resulting from significant
improvements in credit quality. Improvements in credit quality included a decline of $2.2 billion in the
Corporation’s internal watch list loans from December 31, 2009 to December 31, 2010, compared to an
increase of $2.0 billion in the prior year. Additional indicators of improved credit quality included a decrease
of $369 million in the inflow to nonaccrual loans (based on an analysis of nonaccrual loans with book
balances greater than $2 million), a decrease in net credit-related charge-offs of $305 million and a decrease
of $39 million in loans past due 90 days or more and still accruing in 2010, compared to 2009.

•

• Average loans in 2010 were $40.5 billion, a decrease of $5.6 billion from 2009, reflecting subdued loan
demand from customers in a modestly recovering economic environment as well as expected runoff in the
Commercial Real Estate business line.

• Average core deposits increased $3.4 billion, or 10 percent, in 2010, compared to 2009. The increase in
average core deposits reflected increases in average money market and NOW deposits of $3.4 billion, or 26
percent, and noninterest–bearing deposits of $2.2 billion, or 17 percent, in 2010, partially offset by a decrease
in customer certificates of deposit of $2.3 billion. Core deposits exclude other time deposits and foreign
office time deposits.

• Net interest income increased $79 million to $1.6 billion in 2010, compared to 2009. The net interest margin
increased 52 basis points to 3.24 percent, primarily due to changes in the funding mix, including a continued
shift in funding sources toward lower-cost funds, and improved loan spreads.

• Noninterest income decreased $261 million compared to 2009. Excluding net securities gains, noninterest
income decreased $21 million, or three percent, compared to 2009. Increases of $16 million in commercial
lending fees, $7 million in card fees and $7 million in letter of credit fees were partially offset by decreases
of $20 million in service charges on deposit accounts and $7 million in fiduciary income. 2009 included net
securities gains of $243 million, $15 million in gains related to the repurchase of debt and $8 million in net
gains on the termination of leveraged leases.

•

• Noninterest expenses decreased $10 million, or one percent, compared to 2009, primarily due to decreases of
$28 million in Federal Deposit Insurance Corporation (FDIC) insurance expense, $27 million in defined
benefit pension expense and $19 million in other real estate expense, partially offset by an increase of $53
million in salaries expense. The increase in salaries expense was largely driven by an increase in incentive
compensation, reflecting improved overall performance and 2010 peer rankings.
The Corporation fully redeemed $2.25 billion of Fixed Rate Cumulative Perpetual Preferred Stock (preferred
stock) issued in connection with the U.S. Department of Treasury (U.S. Treasury) Capital Purchase Program
(the Capital Purchase Program). The redemption was funded by the net proceeds from an $880 million
common stock offering completed in the first quarter 2010 and from excess liquidity at the parent company.
The redemption resulted in a one-time redemption charge of $94 million in 2010, reflecting the accelerated
accretion of the remaining discount, which reduced diluted earnings per common share by $0.54 in 2010. The
total impact of the preferred stock, including the redemption charge, cash dividends of $24 million and
non-cash discount accretion of $5 million, was a reduction to 2010 diluted earnings per common share of
$0.71.

KEY CORPORATE INITIATIVES
• Completed an $880 million common stock offering and fully redeemed $2.25 billion of preferred stock

issued to the U.S. Treasury in the first quarter 2010.

14

• Doubled the quarterly dividend to 10 cents per share in the fourth quarter following the overall positive
financial performance trends of the Corporation and a modest improvement in the economy. In addition, the
Corporation’s Board of Directors authorized the repurchase of up to 12.6 million shares of common stock in
the open market and also authorized the purchase of outstanding warrants to purchase up to 11.5 million
shares of the Corporation’s common stock.

• Redeemed $515 million of 6.576% subordinated notes due 2037 at par in the fourth quarter 2010. The notes
related to $500 million of trust preferred securities issued by an unconsolidated subsidiary, which were
concurrently redeemed. The Corporation additionally early redeemed $2 billion of Federal Home Loan Bank
(FHLB) advances without penalty in 2010.

• Continued to aggressively focus resources on managing credit quality in 2010, particularly in the
Commercial Real Estate business line. Within the Commercial Real Estate business line, year-end 2010
residential real estate development exposure was reduced by $507 million, or 48 percent, compared to
year-end 2009, and by $1.4 billion, or 71 percent, compared to year-end 2008.

• Maintained strong capital ratios, while eliminating all preferred stock and trust preferred securities from Tier
1 and total capital. Tier 1 common capital was 10.13 percent at December 31, 2010, up from 8.18 percent at
December 31, 2009.
Increased loan and deposit spreads as a result of a strategic initiative which commenced in mid-2008 to better
align risk with appropriate returns in changing market conditions.

•

• On January 18, 2011, announced a definitive agreement to acquire Sterling Bancshares, Inc. (Sterling) under
which the Corporation will acquire all of the outstanding shares of Sterling common stock in a
stock-for-stock transaction. Under the terms of the agreement, each outstanding share of Sterling common
stock will be exchanged for 0.2365 shares of the Corporation’s common stock upon closing. The transaction
is expected to be completed by mid-year 2011 and is subject to customary closing conditions, including
approval by Sterling shareholders and regulatory approvals. Sterling is a Houston-based bank holding
company with total assets of $5.2 billion at December 31, 2010, which operates banking centers in Houston,
San Antonio, Fort Worth and Dallas, Texas.

OVERVIEW

Comerica Incorporated (the Corporation) is a financial holding company headquartered in Dallas, Texas.
The Corporation’s major business segments are the Business Bank, the Retail Bank and Wealth & Institutional
Management. The core businesses are tailored to each of the Corporation’s four primary geographic markets:
Midwest, Western, Texas and Florida.

The accounting and reporting policies of the Corporation and its subsidiaries conform to U.S. generally
accepted accounting principles (GAAP). The Corporation’s consolidated financial statements are prepared based
on the application of accounting policies,
the most significant of which are described in Note 1 to the
consolidated financial statements. The most critical of these significant accounting policies are discussed in the
“Critical Accounting Policies” section of this financial review.

As a financial institution, the Corporation’s principal activity is lending to and accepting deposits from
businesses and individuals. The primary source of revenue is net interest income, which is principally derived
from the difference between interest earned on loans and investment securities and interest paid on deposits and
other funding sources. The Corporation also provides other products and services that meet the financial needs of
customers and which generate noninterest income, the Corporation’s secondary source of revenue. Growth in
loans, deposits and noninterest income is affected by many factors, including economic conditions in the markets
the Corporation serves, the financial requirements and economic health of customers, and successfully adding
new customers and/or increasing the number of products used by current customers. Success in providing
products and services depends on the financial needs of customers and the types of products desired.

15

For full-year 2011, management expects the following, compared to full-year 2010, based on a
continuation of modest growth in the economy. This outlook does not include any impact from the pending
acquisition of Sterling Bancshares, Inc.

• A low single-digit decrease in average loans. Excluding the Commercial Real Estate business line, a low

single-digit increase in average loans.

• Average earning assets of approximately $48 billion, reflecting lower excess liquidity in addition to a

decrease in average loans.

• An average net interest margin similar to full-year 2010, based on no increase in the Federal Funds rate.
• Net credit-related charge-offs between $350 million and $400 million. The provision for credit losses is

expected to be between $150 million and $200 million.

• A low single-digit decline in noninterest income, primarily due to the impact of regulatory changes.
• A low single-digit increase in noninterest expenses, primarily due to an increase in employee benefits

expense.

• Income tax expense to approximate 36 percent of income before income taxes less approximately $60

million of permanent differences related to low-income housing and bank-owned life insurance.

• Commence a share repurchase program that, combined with dividend payments, results in a payout of less

than 50 percent of earnings.

16

ANALYSIS OF NET INTEREST INCOME-Fully Taxable Equivalent (FTE)

$

$

$

(dollar amounts in millions)
Years Ended December 31

Commercial loans
Real estate construction loans
Commercial mortgage loans
Residential mortgage loans
Consumer loans
Lease financing (a)
International loans
Business loan swap income (b)

Total loans (c)
Auction-rate securities
available-for-sale

Other investment securities
available-for-sale

Total investment securities
available-for-sale (d)

Federal funds sold and securities

purchased under agreements to resell

Interest-bearing deposits with

banks (e)

Other short-term investments
Total earning assets
Cash and due from banks
Allowance for loan losses
Accrued income and other assets

Total assets

Money market and NOW deposits
Savings deposits
Customer certificates of deposit

Total interest-bearing core deposits

Other time deposits (f)
Foreign office time deposits (g)

Total interest-bearing deposits

Short-term borrowings
Medium- and long-term debt (f)

Total interest-bearing sources

Noninterest-bearing deposits
Accrued expenses and other liabilities
Total shareholders’ equity

Total liabilities and shareholders’

equity

Net interest income/rate spread (FTE)

FTE adjustment (h)

Impact of net noninterest-bearing

sources of funds

2010
Average
Balance

Interest
820
90
421
85
86
42
48
28
1,620

21,090 $
2,839
10,244
1,607
2,429
1,086
1,222
-
40,517

Average
Rate
3.89 % $ 24,534 $
3.17
4.10
5.30
3.54
3.88
3.94
-
4.00

2009
Average
Balance Interest
890
121
437
97
94
40
58
34
1,771

4,140
10,415
1,756
2,553
1,231
1,533
-
46,162

2008
Average
Average
Balance Interest
Rate
3.63 % $ 28,870 $ 1,468
231
2.92
580
4.20
112
5.53
130
3.68
8
3.25
101
3.79
24
-
2,654
3.84

4,715
10,411
1,886
2,559
1,356
1,968
-
51,765

Average
Rate
5.08 %
4.89
5.57
5.94
5.08
0.59
5.13
-
5.13

745

8

1.01

1,010

15

1.47

193

6

2.95

6,419

220

3.51

8,378

318

3.88

7,908

384

4.88

7,164

228

3.24

9,388

333

3.61

8,101

390

4.83

6

-

0.36

18

-

0.32

93

2

2.08

8
2
1,858

0.25
1.58
3.65

51
1
53
105
9
1
115
1
91
207

0.31
0.08
0.90
0.44
3.04
0.31
0.47
0.25
1.05
0.62

3,191
126
51,004
825
(1,019)
4,743

55,553

16,355
1,394
5,875
23,624
306
462
24,392
216
8,684
33,292
15,094
1,099
6,068

$

55,553

6
3
2,113

0.25
1.74
3.64

63
2
183
248
121
2
371
2
165
538

0.49
0.11
2.26
1.11
2.96
0.29
1.37
0.24
1.23
1.29

2,440
154
58,162
883
(947)
4,711

$ 62,809

$ 12,965
1,339
8,131
22,435
4,103
653
27,191
1,000
13,334
41,525
12,900
1,285
7,099

$ 62,809

1
10
3,057

0.61
3.98
5.06

207
6
263
476
232
26
734
87
415
1,236

1.45
0.45
3.23
2.01
3.45
2.77
2.34
2.30
3.33
2.59

219
244
60,422
1,185
(691)
4,269

$ 65,185

$ 14,245
1,344
8,150
23,739
6,715
926
31,380
3,763
12,457
47,600
10,623
1,520
5,442

$ 65,185

$ 1,651

3.03

$

5

$ 1,575

2.35

$ 1,821

2.47

$

8

$

6

0.21

0.37

0.55

Net interest margin (as a percentage of
average earning assets (FTE) (a) (e)

3.24 %
3.02 %
(a) 2008 net interest income declined $38 million and the net interest margin declined six basis points due to tax-related non-cash lease

2.72 %

income charges.

(b) The gain or loss attributable to the effective portion of cash flow hedges of loans is shown in “Business loan swap income”.
(c) Nonaccrual loans are included in average balances reported and are included in the calculation of average rates.
(d) Average rate based on average historical cost.
(e) Excess liquidity, represented by average balances deposited with the Federal Reserve Bank, reduced the net interest margin by 20 basis
points, 11 basis points and one basis point in 2010, 2009 and 2008, respectively. Excluding excess liquidity, the net interest margin
would have been 3.44% in 2010, 2.83% in 2009 and 3.03% in 2008. See Supplemental Financial Data section for reconcilements of
non-GAAP financial measures.

(f) Other time deposits and medium- and long-term debt average balances have been adjusted to reflect the gain or loss attributable to the
risk hedged by risk management swaps that qualify as fair value hedges. The gain or loss attributable to the effective portion of fair value
hedges of other time deposits and medium- and long-term debt, which totaled a net gain of $77 million, $61 million and $43 million in
2010, 2009 and 2008, respectively, is included in the related interest expense line item.
Includes substantially all deposits by foreign domiciled depositors; deposits are primarily in excess of $100,000.

(g)
(h) The FTE adjustment is computed using a federal income tax rate of 35%.

17

RATE-VOLUME ANALYSIS
Fully Taxable Equivalent (FTE)
(in millions)

Increase
(Decrease)
Due to Rate

2010 / 2009
Increase
(Decrease)
Due to Volume (a)

Net
Increase
(Decrease)

Increase
(Decrease)
Due to Rate

2009 / 2008
Increase
(Decrease)
Due to Volume (a)

Net
Increase
(Decrease)

$

Interest income (FTE):
Loans:

Commercial loans
Real estate construction loans
Commercial mortgage loans
Residential mortgage loans
Consumer loans
Lease financing
International loans
Business loan swap income

Total loans

Auction-rate securities
available-for-sale

Other investment securities

available-for-sale

Total investment securities

available-for-sale

Federal funds sold and securities
purchased under agreements to
resell

Interest-bearing deposits with banks
Other short-term investments

Total interest income (FTE)

Interest expense:
Interest-bearing deposits:

Money market and NOW

accounts

Savings deposits
Customer certificates of deposit
Other time deposits
Foreign office time deposits

Total interest-bearing deposits

Short-term borrowings
Medium- and long-term debt

Total interest expense

$

63
10
(9)
(4)
(3)
8
2
(6)

61

(5)

(30)

(35)

-
-
-

26

(22)
(1)
(110)
3
-

(130)

-
(24)

(154)

Net interest income (FTE)

$

180

$

(133)
(41)
(7)
(8)
(5)
(6)
(12)
-

(212)

(2)

(68)

(70)

-
2
(1)

(281)

10
-
(20)
(115)
(1)

(126)

(1)
(50)

(177)

(104)

(a) Rate/volume variances are allocated to variances due to volume.

NET INTEREST INCOME

$

(70)
(31)
(16)
(12)
(8)
2
(10)
(6)

(151)

(7)

(98)

(105)

-
2
(1)

$

(421)
(93)
(143)
(8)
(36)
36
(26)
10

(681)

(3)

(84)

(87)

(2)
(1)
(2)

(255)

(773)

(12)
(1)
(130)
(112)
(1)

(256)

(1)
(74)

(331)

$

76

$

(138)
(4)
(79)
(34)
(23)

(278)

(78)
(262)

(618)

(155)

$

$

(157)
(17)
-
(7)
-
(4)
(17)
-

(202)

12

18

30

-
6
(5)

(171)

(6)
-
(1)
(77)
(1)

(85)

(7)
12

(80)

(91)

$

(578)
(110)
(143)
(15)
(36)
32
(43)
10

(883)

9

(66)

(57)

(2)
5
(7)

(944)

(144)
(4)
(80)
(111)
(24)

(363)

(85)
(250)

(698)

$

(246)

Net interest income is the difference between interest and yield-related fees earned on assets and interest
paid on liabilities. Adjustments are made to the yields on tax-exempt assets in order to present tax-exempt
income and fully taxable income on a comparable basis. Gains and losses related to the effective portion of risk
management interest rate swaps that qualify as hedges are included with the interest income or expense of the
hedged item when classified in net interest income. Net interest income on a fully taxable equivalent (FTE) basis
comprised 68 percent of total revenues in 2010, compared to 60 percent in 2009 and 67 percent in 2008. The
“Analysis of Net Interest Income-Fully Taxable Equivalent” table of this financial review provides an analysis of
net interest income for the years ended December 31, 2010, 2009 and 2008. The rate-volume analysis in the table
above details the components of the change in net interest income on a FTE basis for 2010 compared to 2009 and
2009 compared to 2008.

18

Net interest income was $1.6 billion in 2010, an increase of $79 million, or five percent, compared to
2009. The increase in net interest income in 2010 resulted primarily from changes in the funding mix, including a
continued shift in funding sources toward lower-cost funds, and improved loan spreads. On a FTE basis, net
interest income was $1.7 billion in 2010, an increase of $76 million, or five percent, from 2009. Average earning
assets decreased $7.2 billion, or 12 percent, to $51.0 billion in 2010, compared to $58.2 billion in 2009, primarily
due to a $5.6 billion, or 12 percent, decrease in average loans, to $40.5 billion, and a $2.2 billion decrease in
investment securities available-for-sale, partially offset by an increase of $751 million in average interest-bearing
deposits with banks. The net interest margin (FTE) increased 52 basis points to 3.24 percent in 2010, from 2.72
percent in 2009, resulting primarily from the reasons cited for the increase in net interest income discussed
above. The net interest margin was reduced by approximately 20 basis points and 11 basis points in 2010 and
2009, respectively, from excess liquidity. Excess liquidity was represented by $3.1 billion and $2.4 billion of
average balances deposited with the Federal Reserve Bank (FRB) in 2010 and 2009, respectively, included in
“interest-bearing deposits with banks” on the consolidated balance sheets.

The Corporation implements various asset and liability management strategies to manage net interest
income exposure to interest rate risk. Refer to the “Interest Rate Risk” section of this financial review for
additional information regarding the Corporation’s asset and liability management policies.

In 2009, net interest income was $1.6 billion, a decrease of $248 million, or 14 percent, from 2008. The
decrease in net interest income in 2009 was primarily due to loan rates declining faster than deposit rates with
late 2008 rate reductions, partially offset by increased loan spreads. On a FTE basis, net interest income was $1.6
billion in 2009, a decrease of $246 million, or 13 percent, from 2008. Average earning assets decreased $2.2
billion, or four percent, to $58.2 billion in 2009, compared to 2008, primarily as a result of a $5.6 billion decrease
in average loans, partially offset by increases of $2.2 billion in average interest-bearing deposits with banks and
$1.3 billion in average investment securities available-for-sale. The net interest margin (FTE) decreased to 2.72
percent in 2009, from 3.02 percent in 2008, resulting primarily from the reasons cited for the decline in net
interest income discussed above, as well as excess liquidity and the reduced contribution of noninterest-bearing
funds in a significantly lower rate environment. The net interest margin was reduced by 11 basis points in 2009
from excess liquidity, represented by $2.4 billion of average balances deposited with the FRB.

Management expects an average net interest margin similar to full-year 2010 based on no increase in the
include any impact from the pending acquisition of Sterling

Federal Funds rate. This outlook does not
Bancshares, Inc.

PROVISION FOR CREDIT LOSSES

The provision for credit losses includes both the provision for loan losses and the provision for credit
losses on lending-related commitments. The provision for loan losses reflects management’s evaluation of the
adequacy of the allowance for loan losses. The provision for credit losses on lending-related commitments, a
component of “noninterest expenses” on the consolidated statements of income, reflects management’s
assessment of the adequacy of the allowance for credit losses on lending-related commitments. The Corporation
performs a detailed credit quality review quarterly to determine the adequacy of the allowance for loan losses and
the allowance for credit losses on lending-related commitments and records provisions for each based on the
results. For a further discussion of both allowances, refer to the “Credit Risk” and the “Critical Accounting
Policies” sections of this financial review.

The provision for loan losses was $480 million in 2010, compared to $1.1 billion in 2009 and $686
million in 2008. The $602 million decrease in the provision for loan losses in 2010, compared to 2009, resulted
primarily from significant, broad-based improvements in credit quality. Improvements in credit quality included
a decline of $2.2 billion in the Corporation’s internal watch list loans from year-end 2009 to year-end 2010,
compared to an increase of $2.0 billion in the same period in 2009. Additional indicators of improved credit
quality included a decrease of $369 million in the inflow to nonaccrual loans (based on an analysis of nonaccrual
loans with book balances greater than $2 million), a decline in net credit-related charge-offs of $305 million, and

19

a decrease of $39 million in loans past 90 days or more and still accruing in 2010, compared to 2009. The
increase in the provision for loan losses in 2009, when compared to 2008, was primarily the result of credit
challenges in the Middle Market, Commercial Real Estate (primarily residential real estate development), Global
Corporate Banking, Leasing and Private Banking loan portfolios.

The national economy was recovering moderately from the middle of 2009 until the middle of the second
quarter 2010, when the pace of economic growth slowed in reaction to the European sovereign debt crisis, the
temporary interruption of various government support programs and the oil spill in the Gulf of Mexico.
Economic growth rebounded in the third quarter and was evidenced by a private-sector led recovery. Real gross
domestic product growth was just under three percent from December 31, 2009 to December 31, 2010. Texas
continued to outperform the national economy in 2010, with notable strength in manufacturing and energy
exploration. Reflecting the broadening recovery in Texas, nonfarm payrolls increased at an approximate two
percent annual rate in 2010, compared to slightly below one percent increase nationally. The average Texas
Economic Activity Index for the first ten months of 2010 was 91 percent. The Texas Economic Activity Index
equally weights nine seasonally-adjusted coincident indicators of real state economic activity. The indicators
reflect activity in the energy, manufacturing, travel, and trade sectors, as well as job growth and consumer
outlays. The Michigan economy showed signs of recovery with strength in manufacturing, but continued to lag
behind the national recovery. The average Michigan Economic Activity Index for the first eleven months of 2010
increased 15 percent from the average for full-year 2009. The Michigan Economic Activity Index represents nine
different measures of economic activity compiled by the Corporation. The California economy also appears to be
lagging the national recovery. Payrolls through December were rising at a rate of less than one percent, which
was slower than the national average. California’s housing sector appears to be improving as prices are now more
aligned to income and the inventory of unsold homes has declined. The average California Economic Activity
Index compiled by the Corporation for the first eleven months of 2010 increased four percent from the average
for full-year 2009. The California Economic Activity Index equally weights nine, seasonally-adjusted, coincident
in the
measures of economic activity. Forward-looking indicators
Corporation’s primary geographic markets are likely to continue to strengthen gradually against a background of
moderate national and global expansions.

that economic conditions

suggest

Net loan charge-offs in 2010 decreased $304 million to $564 million, or 1.39 percent of average total
loans, compared to $868 million, or 1.88 percent, in 2009 and $471 million, or 0.91 percent, in 2008. The $304
million decrease in net loan charge-offs in 2010, compared to 2009, consisted primarily of decreases in net loan
charge-offs in the Commercial Real Estate ($114 million), Global Corporate Banking ($61 million), Middle
Market ($60 million), and Specialty Business ($57 million) business lines, partially offset by an increase in net
loan charge-offs in the Private Banking business line ($15 million). The Specialty Businesses business line
includes Energy Lending, Leasing, Technology and Life Sciences, Mortgage Banker Finance, Entertainment
Lending and the Financial Services Division. The $114 million decrease in net
loan charge-offs in the
Commercial Real Estate business line reflected decreases in all markets, with the exception of Texas. In the
Texas market, Commercial Real Estate business line net loan charge-offs increased $17 million, primarily due to
charge-offs in residential land development and multi-use projects in the residential construction loan portfolio.
By geographic market, the decrease in net loan charge-offs in 2010, compared to 2009, consisted primarily of
decreases in the Midwest ($134 million) and Western ($115 million) markets.

The provision for credit losses on lending-related commitments was a negative provision of $2 million in
2010, compared to provisions of less than $0.5 million in 2009 and $18 million in 2008. The $2 million reduction
in the provision for credit losses on lending-related commitments in 2010, compared to 2009, resulted primarily
from improved credit quality in unfunded commitments in the Midwest and Western markets and a decrease in
specific reserves for letters of credit.

An analysis of the changes in the allowance for loan losses, including charge-offs and recoveries by loan
category, is provided in the “Analysis of the Allowance for Loan Losses” table in the “Credit Risk” section of
losses on lending-related
this financial review. An analysis of the changes in the allowance for credit
commitments is also provided in the “Credit Risk” section of this financial review.

20

Management expects net credit-related charge-offs between $350 million and $400 million for full-year
2011. The provision for credit losses is expected to be between $150 million and $200 million. This outlook does
not include any impact from the pending acquisition of Sterling Bancshares, Inc.

NONINTEREST INCOME

(in millions)
Years Ended December 31

Service charges on deposit accounts
Fiduciary income
Commercial lending fees
Letter of credit fees
Card fees
Foreign exchange income
Bank-owned life insurance
Brokerage fees
Net securities gains
Other noninterest income

Total noninterest income

2010

2009

2008

$

$

208
154
95
76
58
39
40
25
3
91

789

$

$

228
161
79
69
51
41
35
31
243
112

$

1,050

$

229
199
69
69
58
40
38
42
67
82

893

Noninterest income decreased $261 million to $789 million in 2010, compared to $1.1 billion in 2009,
and increased $157 million, or 18 percent, in 2009, compared to $893 million in 2008. Excluding net securities
gains, noninterest income decreased three percent in 2010, compared to 2009, and two percent in 2009, compared
to 2008. An analysis of significant year over year changes by individual line item follows.

Service charges on deposit accounts decreased $20 million, or nine percent, to $208 million in 2010,
compared to $228 million in 2009, and decreased $1 million, or less than one percent, in 2009. The decrease in
2010 was due to lower commercial service charges and reduced fees from retail overdrafts and non-sufficient
funds in part due to the impact of Regulation E.

Fiduciary income decreased $7 million, or four percent, to $154 million in 2010, compared to $161
million in 2009, and decreased $38 million, or 19 percent, in 2009. Personal and institutional trust fees are the
two major components of fiduciary income. These fees are based on services provided and assets managed.
Fluctuations in the market values of the underlying assets managed, which include both equity and fixed income
securities, impact fiduciary income. The decrease in 2010 was primarily due to the sale of the Corporation’s
proprietary defined contribution plan recordkeeping business in the second quarter 2009. The decrease in 2009,
compared to 2008, was primarily due to lower personal trust fees related to market value decline in late 2008 and
the sale of the defined contribution plan recordkeeping business.

Commercial lending fees increased $16 million, or 21 percent, to $95 million in 2010, compared to $79
million in 2009, and increased $10 million, or 14 percent, in 2009. The majority of the increase in 2010 resulted
from improved pricing on unused commercial loan commitments as well as lower usage levels in 2010. The
majority of the increase in 2009 resulted from increased risk-adjusted pricing on unused commercial loan
commitments.

Letter of credit fees increased $7 million, or 10 percent, to $76 million in 2010, compared to $69 million
in both 2009 and 2008. The increase in 2010 was primarily due to improved pricing on standby letters of credit
and new business.

Card fees, which consist primarily of interchange fees earned on debit and commercial cards, increased
$7 million, or 15 percent, to $58 million in 2010, compared to $51 million in 2009, and decreased $7 million, or
13 percent, in 2009. Growth in 2010 resulted primarily from the modestly improving economic environment,

21

which allowed companies to return to less restrictive spending habits and led to higher levels of commercial card
business activity and new customers. The decline in 2009 resulted primarily from lower levels of retail and
commercial card business activity.

Bank-owned life insurance income increased $5 million, or 14 percent, to $40 million in 2010, compared
to a decrease of $3 million, or eight percent, in 2009. The increase in 2010 resulted primarily from an increase in
death benefits received. The decrease in 2009 resulted primarily from a decrease in death benefits received and
reduced earnings on bank-owned life insurance policies.

Brokerage fees of $25 million decreased $6 million, or 22 percent, in 2010, compared to a decrease of
$11 million, or 25 percent, in 2009. Brokerage fees include commissions from retail brokerage transactions and
mutual fund sales and are subject to changes in the level of market activity. The decreases in 2010 and 2009 were
primarily due to the impact of lower transaction and dollar volumes despite modest economic growth in 2010.

Net securities gains decreased $240 million, to $3 million in 2010, compared to an increase of $176
million, to $243 million in 2009. Net securities gains in 2010 primarily reflected net gains on sales and
redemptions of auction-rate securities ($8 million), partially offset by a loss related to the derivative contract
associated with the 2008 sale of the Corporation’s ownership of VISA shares ($5 million). In 2009, net securities
gains primarily reflected gains on the sale of residential mortgage-backed securities ($225 million) and gains on
the redemption of auction-rate securities ($14 million). Residential mortgage-backed government agency
securities were sold in 2009 as market conditions were favorable and there was no longer a need to hold a large
portfolio of fixed-rate securities to mitigate the impact of potential future rate declines on net interest income.
2008 included gains from the sales of the Corporation’s ownership of Visa ($48 million) and MasterCard shares
($14 million).

Other noninterest income decreased $21 million, or 19 percent, in 2010, compared to an increase of $30
million, or 37 percent, in 2009. The following table illustrates fluctuations in certain categories included in “other
noninterest income” on the consolidated statements of income.

(in millions)
Years Ended December 31

Other noninterest income

2010

2009

2008

Deferred compensation asset returns (a)
Net income (loss) from principal investing and warrants
Risk management hedge gains (losses) from interest rate and foreign

$

$

5
3

$

10
(6)

exchange contracts

Amortization of low income housing investments
Gain on repurchase of debt
Net gain on termination of leveraged leases
Net gain on sales of businesses

(2)
(51)
2
-
-

(6)
(48)
15
8
5

(26)
(10)

8
(46)
-
-
-

(a) Compensation deferred by the Corporation’s officers is invested in stocks and bonds to reflect the
investment selections of the officers. Income (loss) earned on these assets is reported in noninterest income
and the offsetting increase (decrease) in the liability is reported in salaries expense.

Management expects a low single-digit decline in noninterest income for full-year 2011, compared to
full-year 2010, primarily due to the impact of regulatory changes. This outlook does not include any impact from
the pending acquisition of Sterling Bancshares, Inc.

22

NONINTEREST EXPENSES

(in millions)
Years Ended December 31

Salaries
Employee benefits

Total salaries and employee benefits

Net occupancy expense
Equipment expense
Outside processing fee expense
Software expense
FDIC Insurance expense
Legal Fees
Advertising expense
Other real estate expense
Litigation and operational losses
Provision for credit losses on lending-related commitments
Other noninterest expenses

$

2010

2009

2008

$

740
179

919
162
63
96
89
62
35
30
29
11
(2)
146

$

687
210

897
162
62
97
84
90
37
29
48
10
-
134

781
194

975
156
62
104
76
16
29
30
10
103
18
172

Total noninterest expenses

$

1,640

$

1,650

$

1,751

Noninterest expenses decreased $10 million, or one percent, to $1,640 million in 2010, compared to
$1,650 million in 2009, and decreased $101 million, or six percent, in 2009, from $1,751 million in 2008.
Excluding an $88 million net charge related to the repurchase of auction-rate securities from certain customers in
2008, noninterest expenses decreased $13 million, or one percent, in 2009, compared to 2008. An analysis of
increases and decreases by individual line item is presented below.

reflecting improved overall performance and 2010 peer

Salaries expense increased $53 million, or eight percent, in 2010, compared to a decrease of $94 million,
or 12 percent, in 2009. The increase in salaries expense in 2010 was primarily due to an increase in incentive
rankings. The
compensation of $56 million,
Corporation’s incentive programs are designed to reward performance and provide market competitive total
compensation. Business unit incentives are tied to new business and business unit profitability, while executive
incentives are tied to the Corporation’s overall performance and peer-based comparisons of results. During the
time the Corporation was a participant in the Capital Purchase Program, adjustments were made to the incentive
programs to comply with related restrictions. The decrease in salaries expense in 2009 was primarily due to
decreases in business unit and executive incentives ($57 million), regular salaries ($39 million), share-based
compensation ($19 million) and severance ($15 million), partially offset by an increase in deferred compensation
plan costs ($36 million). The decrease in regular salaries in 2009 was primarily the result of a decrease in staff of
approximately 850 full-time equivalent employees from year-end 2008 to year-end 2009.

Employee benefits expense decreased $31 million, or 15 percent, in 2010, compared to an increase of $16
million, or eight percent, in 2009. The decrease in 2010 resulted primarily from a decline in defined benefit
pension expense largely driven by higher than expected net gains on plan assets in 2009. The increase in 2009
resulted primarily from an increase in defined benefit pension expense driven by a decrease in the discount rate.
For a further discussion of defined benefit pension expense, refer to the “Critical Accounting Policies” section of
this financial review and Note 18 to the consolidated financial statements.

Net occupancy and equipment expense increased $1 million, or less than one percent, to $225 million in
2010, compared to an increase of $6 million, or three percent, in 2009. Net occupancy and equipment expense
increased $7 million in 2009 due to the addition of new banking centers.

23

Outside processing fee expense decreased $1 million, or one percent, to $96 million in 2010, from $97
million in 2009, compared to a decrease of $7 million, or seven percent, in 2009. The decrease in 2009 was
largely due to lower volumes in activity-based processing charges resulting from the 2009 sale of the
Corporation’s proprietary defined contribution plan recordkeeping business.

Software expense increased $5 million, or seven percent, in 2010, compared to an increase of $8 million,
or 10 percent, in 2009. The increase in 2010 was primarily due to software upgrades in the banking centers and
throughout the Corporation. The increase in 2009 was mostly due to a full year of amortization expense for
investments in technology made throughout 2008.

FDIC insurance expense decreased $28 million to $62 million in 2010, compared to an increase of $74
million in 2009. The decrease in 2010 was primarily due to the 2009 industry-wide special assessment charge of
$29 million. In addition to the industry-wide special assessment charge, 2009 results reflected an increase in base
assessment rates.

Legal fees decreased $2 million to $35 million in 2010, from $37 million in 2009, and increased $8
million in 2009. The increase in 2009 was primarily due to increased loan workout and collection expenses,
partially offset by lower other litigation expenses.

Advertising expense increased $1 million, or five percent to $30 million in 2010, from $29 million in

2009, and decreased one million in 2009.

Other real estate expenses decreased $19 million to $29 million in 2010, from $48 million in 2009, and
increased $38 million in 2009. Other real estate expenses reflects write-downs, net gains (losses) on sales and
carrying costs related primarily to foreclosed property. The decrease in 2010 was primarily due to a decrease in
write-downs on foreclosed property and net gains on foreclosed property sold. The increase in 2009 was
primarily due to write-downs on foreclosed property of $34 million in 2009 reflecting declines in property
values. For additional information regarding foreclosed property, refer to “Nonperforming Assets” in the “Credit
Risk” section of this financial review.

to fluctuation due to timing of authorized and actual

Litigation and operational losses increased $1 million to $11 million in 2010, from $10 million in 2009,
and decreased $93 million in 2009. Litigation and operational losses include traditionally defined operating
losses, such as fraud and processing losses, as well as uninsured losses and litigation losses. These expenses are
litigation settlements, as well as insurance
subject
settlements. Litigation and operational losses in 2008 included a net charge of $88 million related to the
repurchase of auction-rate securities from certain customers. For additional information on the repurchase of
auction-rate securities, refer to “Investment Securities Available-for-Sale” in the “Balance Sheet and Capital
Funds Analysis” section and “Critical Accounting Policies” section of this financial review and Note 4 to the
consolidated financial statements.

Other noninterest expenses increased $12 million, or eight percent, in 2010, and decreased $38 million, or
21 percent, in 2009. The increase in 2010 was primarily due to a $5 million loss on the redemption of trust
preferred securities and smaller increases in several other expense categories. The decrease in 2009 was due in
part to decreases of $11 million, or 40 percent, in travel and entertainment expenses, and $9 million in customer
services expenses.

Management expects a low single-digit increase in noninterest expenses for full-year 2011, compared to
full-year 2010, primarily due to an increase in employee benefits expense. This outlook does not include any
impact from the pending acquisition of Sterling Bancshares, Inc.

24

INCOME TAXES AND TAX-RELATED ITEMS

The provision for income taxes was a provision of $55 million in 2010, compared to a benefit of $131
million in 2009 and a provision of $59 million in 2008. The increase in the provision for income taxes in 2010
was due primarily to an increase in income before income taxes. The income tax benefit in 2009 reflected the
decrease in income before taxes compared to 2008, included a $24 million non-taxable gain on the termination of
certain leveraged leases and a benefit of $14 million related to the settlement of certain tax matters due to the
audit of years 2001-2004, the filing of certain amended state tax returns and a reduction of tax interest due to
anticipated refunds due from the Internal Revenue Service (IRS).

Net deferred tax assets were $383 million at December 31, 2010, compared to $158 million at
December 31, 2009, an increase of $225 million, primarily due to a reduction in deferred tax liabilities resulting
from payments made to the IRS in 2010 for structured leasing transactions, an increase in unutilized tax credits
and an increase in deferred tax assets resulting from adjustments to defined benefit and other postretirement plans
recognized in other comprehensive income at December 31, 2010. Included in net deferred tax assets at
December 31, 2010 were deferred tax assets of $708 million. Deferred tax assets were evaluated for realization
and it was determined that no valuation allowance was needed. This conclusion is based on available evidence of
loss carryback capacity, projected future reversals of existing taxable temporary differences and assumptions
made regarding future events.

Management expects full-year 2011 income tax expense to approximate 36 percent of income before
income taxes less approximately $60 million of permanent differences related to low-income housing and bank-
owned life insurance. This outlook does not include any impact from the pending acquisition of Sterling
Bancshares, Inc.

INCOME FROM DISCONTINUED OPERATIONS, NET OF TAX

Income from discontinued operations, net of tax, was $17 million in 2010, compared to $1 million in both
2009 and 2008. The $16 million increase in 2010, when compared to 2009, resulted from a $17 million after-tax
gain in the first quarter 2010 from the cash settlement of a note receivable related to the 2006 sale of an
investment advisory subsidiary. For further information on the cash settlement of the note and discontinued
operations, refer to Note 25 to the consolidated financial statements.

PREFERRED STOCK DIVIDENDS

Preferred stock dividends were $123 million in 2010, compared to $134 million and $17 million in 2009

and 2008, respectively.

In the fourth quarter 2008, the Corporation participated in the Capital Purchase Program and received
proceeds of $2.25 billion from the U. S. Treasury. In return, the Corporation issued 2.25 million shares of
preferred stock and granted a warrant to purchase 11.5 million shares of common stock to the U.S. Treasury. The
preferred stock paid a cumulative dividend rate of five percent per annum on the liquidation preference of $1,000
per share.

The proceeds from the Capital Purchase Program were allocated between the preferred stock and the
related warrant based on relative fair value, which resulted in an original discount to the preferred stock of $124
million, which was accreted on a level yield basis and recognized as additional preferred stock dividends.

In 2010, the Corporation fully redeemed the $2.25 billion of preferred stock issued in connection with the
Capital Purchase Program. The redemption was funded by the net proceeds from an $880 million common stock
offering completed in the first quarter 2010 and from excess liquidity at the parent company. Preferred stock
dividends in 2010 included a one-time redemption charge of $94 million, reflecting the accelerated accretion of
the remaining discount, cash dividends of $24 million and non-cash discount accretion of $5 million. Preferred
stock dividends in 2009 and 2008 included $22 million and $3 million, respectively, of non-cash discount
accretion. Preferred stock dividends reduced diluted earnings per common share by $0.71, $0.90 and $0.12 in
2010, 2009 and 2008, respectively.

25

For further information on the Capital Purchase Program, refer to the “Capital” section of this financial

review and Note 14 to the consolidated financial statements.

STRATEGIC LINES OF BUSINESS

BUSINESS SEGMENTS

The Corporation’s operations are strategically aligned into three major business segments: the Business
Bank, the Retail Bank and Wealth & Institutional Management. These business segments are differentiated based
upon the products and services provided. In addition to the three major business segments, the Finance Division
is also reported as a segment. The Other category includes discontinued operations and items not directly
associated with these business segments or the Finance Division. Note 23 to the consolidated financial statements
describes the business activities of each business segment and the methodologies which form the basis for these
results, and presents financial results of these business segments for the years ended December 31, 2010, 2009
and 2008.

The following table presents net income (loss) by business segment.

(dollar amounts in millions)
Years Ended December 31

Business Bank
Retail Bank
Wealth & Institutional Management (a)

Finance
Other (b)

Total

2010

2009

2008

$

529
(31)
(3)

495
(234)
16

107 % $

(6)
(1)

100 %

147
(48)
43

142
(110)
(15)

104 % $
(34)
30

100 %

89 %
13
(2)

100 %

237
34
(4)

267
(48)
(6)

$

277

$

17

$

213

(a) 2008 included an $88 million net charge ($56 million, after-tax) related to the repurchase of auction-rate securities
from customers.

(b) Includes discontinued operations and items not directly associated with the three major business segments or the
Finance Division.

The Business Bank’s net income of $529 million increased $382 million for the year ended December 31,
2010, compared to net income of $147 million in 2009. Net interest income (FTE) was $1.4 billion in 2010, an
increase of $42 million, or three percent, compared to 2009. The increase in net interest income (FTE) was
primarily due to an increase in loan and deposit spreads and the benefit provided by a $3.6 billion increase in
average deposits, partially offset by a $5.1 billion decrease in average loans. The provision for loan losses
decreased $574 million to $286 million in 2010, from $860 million in 2009, reflecting decreases in the
Commercial Real Estate, Middle Market and Global Corporate Banking business lines. Net credit-related charge-
offs of $424 million decreased $288 million, primarily due to decreases in charge-offs in the Commercial Real
Estate, Global Corporate Banking and Middle Market business lines. Noninterest income of $303 million in 2010
increased $12 million from 2009, primarily due to increases in commercial lending fees ($15 million), letter of
credit fees ($7 million), card fees ($6 million), and foreign exchange income ($5 million), partially offset by an
$8 million 2009 net gain on the termination of certain leveraged leases and a decline in service charges on
deposit accounts ($6 million). Noninterest expenses of $632 million in 2010 decreased $6 million from 2009,
primarily due to decreases in other real estate expense ($19 million), processing costs ($17 million), the provision
for credit losses on lending related commitments ($11 million), employee benefit expenses ($5 million), and
nominal decreases in other noninterest expense categories, partially offset by increases in allocated corporate
overhead expenses ($45 million) and salaries expense ($13 million). The net corporate overhead expense
allocation rates were approximately 6.5 percent and 3.3 percent of total noninterest expenses for all business
segments in 2010 and 2009, respectively. The increase in rate in 2010, when compared to 2009, resulted mostly
from a decrease in funding credits provided to the business segments resulting from the redemption of preferred

26

stock. The increase in salaries expense was primarily driven by an increase in incentive compensation, reflecting
improved financial performance and final 2010 peer rankings. The provision for income taxes (FTE) of $226
million for the year ended December 31, 2010, increased $252 million, compared to a benefit for income taxes
(FTE) of $26 million for the comparable period the prior year, primarily due to an increase in income before
income taxes.

The net loss for the Retail Bank was $31 million in 2010, compared to a net loss of $48 million in 2009.
Net interest income (FTE) of $531 million increased $21 million, or four percent, in 2010, primarily due to an
increase in loan and deposit spreads, partially offset by decreases in average loans of $621 million and average
deposits of $435 million. The provision for loan losses decreased $38 million to $105 million in 2010, reflecting
decreases in the Small Business Banking and Personal Banking business lines. Net credit-related charge-offs of
$88 million decreased $31 million, primarily due to a decrease in charge-offs in the Small Business Banking
business line. Noninterest income of $174 million decreased $16 million in 2010, from $190 million in 2009,
primarily due to a $13 million decline in service charges on deposit accounts. Noninterest expenses of $648
million in 2010 increased $6 million from 2009, primarily due to increases of $24 million in allocated net
corporate overhead expenses and $7 million in incentive compensation expense, partially offset by decreases in
FDIC insurance expense ($11 million), employee benefit expense ($6 million), and other real estate expenses ($3
million). Refer to the previous Business Bank discussion for an explanation of the increase in allocated net
corporate overhead expenses.

The net loss for Wealth & Institutional Management was $3 million in 2010, compared to net income of
$43 million in 2009. Net interest income (FTE) of $170 million increased $9 million, or six percent, in 2010,
compared to 2009, primarily due to the benefit provided by an increase in average deposits of $108 million and
increases in loan and deposit spreads. The provision for loan losses increased $28 million to $90 million,
primarily reflecting an increase in Private Banking in the Midwest market. Net credit-related charge-offs of $52
million increased $14 million, primarily due to increases in Private Banking in the Western and Midwest
markets. Noninterest income of $240 million decreased $29 million, in 2010, primarily due to decreases in
fiduciary income ($8 million), brokerage fees ($7 million), a decrease in gains on the sales and redemptions of
auction-rate securities ($6 million) and a second quarter 2009 gain related to the sale of the defined contribution
plan recordkeeping business ($5 million). Noninterest expenses of $324 million in 2010 increased $22 million
from 2009, due to increases in allocated net corporate overhead expense ($15 million) and incentive
compensation expense ($5 million). The 2009 sale of the defined contribution plan recordkeeping business was
the primary reason for the decreases in fiduciary income for the year ended December 31, 2010, compared to the
prior year. Refer to the previous Business Bank discussion for an explanation of the increase in allocated net
corporate overhead expenses.

The net loss in the Finance Division was $234 million in 2010, compared to a net loss of $110 million in
2009. The increase in net loss primarily reflected a $232 million decrease in the noninterest income, primarily
due to $225 million of 2009 gains on the sale of residential mortgage-backed securities, partially offset by a
decrease of $37 million in net interest expense (FTE) and an increase of $72 million in the provision for income
taxes. The decrease in net interest expense (FTE) was primarily due to a reduction in excess liquidity and a
decline in wholesale funding, partially offset by the impact of the Corporation’s internal funds transfer
methodology. The methodology is designed to centralize interest rate risk in the Finance Division and to measure
profitability across all interest rate environments. To that end, the Finance Division pays the three major business
segments for the long-term value of deposits based upon their assumed lives. The three major business segments
pay the Finance Division for funding based on the repricing and term characteristics of their loans. The reduction
in loan volume from 2009 to 2010 resulted in less income to the Finance Division, while growth in deposits and
their long-term value resulted in greater expenses paid by the Finance Division to the business segments.
Noninterest expenses increased $1 million as a decrease in FDIC insurance expense ($8 million) was more than
offset by a $5 million loss on the redemption of trust preferred securities and nominal increases in other
noninterest expense categories.

27

Net income in the Other category was $16 million in 2010, compared to a net loss of $15 million in 2009.
The increase in net income of $31 million reflected a $17 million after-tax discontinued operations gain
recognized in the first quarter 2010, partially offset by timing differences between when corporate expenses are
reflected as a consolidated expense and when the expenses are allocated to the business segments.

GEOGRAPHIC MARKET SEGMENTS

The Corporation’s management accounting system also produces market segment results for the
Corporation’s four primary geographic markets: Midwest, Western, Texas and Florida. In addition to the four
primary geographic markets, Other Markets and International are also reported as market segments. The
Finance & Other Businesses category includes discontinued operations and items not directly associated with the
market segments. Note 23 to the consolidated financial statements presents a description of each of these market
segments as well as the financial results for the years ended December 31, 2010, 2009 and 2008.

The following table presents net income (loss) by market segment.

(dollar amounts in millions)
Years Ended December 31
Midwest
Western
Texas
Florida
Other Markets (a)
International

Finance & Other Businesses (b)

Total

2010

2009

2008

$

$

171
114
70
(13)
100
53
495
(218)
277

35 % $
40
23
(16)
14
40
(3)
(23)
20
77
11
24
100 % 142
(125)
17

$

29 % $
(11)
28
(17)
54
17
100 %

$

204
(20)
53
(13)
14
29
267
(54)
213

77 %
(8)
20
(5)
5
11
100 %

(a) 2008 included an $88 million net charge ($56 million, after-tax) related to the repurchase of auction-

rate securities from customers.

(b) Includes discontinued operations and items not directly associated with the market segments.

The Midwest market’s net income increased $131 million to $171 million in 2010, compared to $40
million in 2009. Net interest income (FTE) of $816 million increased $15 million, or two percent, from 2009,
primarily due to an increase in loan and deposit spreads and the benefit provided by a $592 million increase in
average deposits, partially offset by a $2.1 billion decrease in average loans. The provision for loan losses
decreased $238 million, to $199 million in 2010, compared to 2009, reflecting decreases in the Middle Market,
Leasing, and Commercial Real Estate business lines, partially offset by an increase in Private Banking. Net
credit-related charge-offs decreased $134 million, primarily due to decreases in charge-offs in the Middle
Market, Leasing, Commercial Real Estate and Small Business Banking business lines. Noninterest income of
$397 million in 2010 decreased $37 million from 2009, primarily due to decreases in service charges on deposit
accounts ($13 million), fiduciary income ($9 million) and brokerage fees ($4 million), an $8 million net 2009
gain on the termination of certain leveraged leases and a $4 million loss related to the 2008 sale of the
Corporation’s ownership of VISA shares, partially offset by an increase in card fees ($6 million). Noninterest
expenses of $751 million in 2010 decreased $7 million from 2009, primarily due to decreases in salaries expense
other than incentive compensation ($11 million), processing costs ($10 million), FDIC insurance expense ($9
million), employee benefits expense ($9 million), other real estate expense ($6 million), and nominal decreases in
other noninterest expense categories, partially offset by an increase in allocated net corporate overhead expenses
($33 million) and incentive compensation ($13 million). Refer to the Business Bank discussion above for an
explanation of the increase in allocated net corporate overhead expenses.

28

The Western market’s net income of $114 million increased $130 million in 2010, compared to a net loss
of $16 million in 2009. Net interest income (FTE) of $639 million increased $16 million, or three percent, in
2010, primarily due to an increase in loan and deposit spreads and the benefit provided by a $927 million
increase in average deposits, partially offset by a $1.6 billion decline in average loans. The provision for loan
losses decreased $210 million, to $148 million in 2010, reflecting decreases in the Commercial Real Estate,
Global Corporate Banking and Middle Market business lines. Net credit-related charge-offs decreased $115
million, primarily due to decreases in charge-offs in the Commercial Real Estate and Global Corporate Banking
business lines. Noninterest income was $135 million in 2010, an increase of $2 million from 2009, primarily due
to an increase in foreign exchange income of $5 million, partially offset by a $4 million decrease in service
charges on deposit accounts. Noninterest expenses of $432 million in 2010 decreased $2 million from 2009,
primarily due to decreases in other real estate expenses ($9 million), processing costs ($6 million), FDIC
insurance ($4 million), and nominal decreases in other noninterest expense categories, partially offset by an
increase in allocated net corporate overhead expenses ($25 million) and incentive compensation ($8 million).
Refer to the previous Business Bank discussion for an explanation of the increase in allocated net corporate
overhead expenses.

The Texas market’s net income increased $30 million to $70 million in 2010, compared to $40 million in
2009. Net interest income (FTE) of $318 million increased $20 million, or seven percent, in 2010, compared to
2009. The increase in net interest income (FTE) was primarily due to an increase in loan and deposit spreads and
the benefit provided by an increase of $808 million in average deposits, partially offset by a $904 million decline
in average loans. The provision for loan losses decreased $37 million, primarily due to decreases in the Specialty
Businesses, Middle Market and Commercial Real Estate business lines. Net credit-related charge-offs of $47
million decreased $6 million from the prior year, as an increase in the Commercial Real Estate business line was
more than offset by decreases in the Specialty Businesses, Middle Market and Small Business Banking business
lines. Noninterest income of $91 million in 2010 increased $5 million from 2009, primarily due to an increase in
commercial lending fees of $6 million. Noninterest expenses of $253 million in 2010 increased $15 million from
2009, primarily due to increases in allocated net corporate overhead expenses ($14 million) and salaries expense
($7 million). Refer to the previous Business Bank discussion for an explanation of the increase in allocated net
corporate overhead expenses.

The net loss in the Florida market was $13 million in 2010, compared to a net loss of $23 million in 2009.
Net interest income (FTE) of $43 million in 2010 decreased $1 million, primarily due to a $167 million decrease
in loan balances, partially offset by an increase in loan and deposit spreads. The provision for loan losses
decreased $26 million, primarily reflecting decreases in the Commercial Real Estate and Middle Market business
lines. Net credit-related charge-offs of $30 million decreased $18 million from the prior year, primarily due to
decreases in charge-offs in the Commercial Real Estate and Middle Market business lines. Noninterest income of
$14 million in 2010 increased $2 million from 2009, reflecting nominal increases in several noninterest income
categories. Noninterest expenses of $44 million in 2010 increased $7 million from 2009 due to an increase in
allocated corporate overhead expenses ($3 million) and nominal increases in several other noninterest expense
categories. Refer to the previous Business Bank discussion for an explanation of the increase in allocated net
corporate overhead expenses.

Net income in Other Markets increased $23 million to $100 million in 2010, compared to $77 million in
2009. Net interest income (FTE) of $182 million in 2010 increased $18 million from 2009, primarily due to
increases in loan and deposit spreads and the benefit provided by a $562 million increase in average deposits,
partially offset by a $603 million decrease in average loans. The provision for loan losses decreased $33 million,
reflecting decreases in the Commercial Real Estate and Specialty Businesses business lines, partially offset by an
increase in the Middle Market business line. Net credit-related charge-offs decreased $19 million, primarily due
to decreases in charge-offs in the Commercial Real Estate and Specialty Businesses business lines, partially
offset by an increase in charge-offs in the Middle Market business line. Noninterest income of $45 million
decreased $7 million in 2010, compared to 2009, primarily due to a $5 million gain related to the sale of the
defined contribution plan recordkeeping business in the second quarter 2009 and a $6 million decrease in gains

29

on the sales and redemptions of auction-rate securities, partially offset by nominal increases in other noninterest
income categories. Noninterest expenses of $90 million in 2010 increased $6 million from 2009, primarily due to
an increase in net allocated corporate overhead expenses ($5 million). Refer to the previous Business Bank
discussion for an explanation of the increase in allocated net corporate overhead expenses.

The International market’s net income increased $29 million, to $53 million in 2010, compared to $24
million in 2009. Net interest income (FTE) of $73 million in 2010 increased $4 million, or seven percent, from
2009, primarily due to an increase in loan spreads and the benefit provided by a $325 million increase in average
deposits, partially offset by a $344 million decrease in average loans. The negative provision for loan losses of $7
million in 2010 represents a decrease of $40 million compared to 2009, primarily due to decreases in specific
allowances and total loans. Noninterest income of $35 million in 2010 increased $2 million from 2009, primarily
due to increases in letter of credit fee income. Noninterest expenses of $34 million increased $3 million in 2010
compared to 2009, primarily due to an increase in net allocated corporate overhead expenses.

The net loss for the Finance & Other Business segment was $218 million in 2010, compared to a net loss
of $125 million in 2009. The $93 million increase in net loss resulted from the same reasons noted in the Finance
Division and Other category discussions under the “Business Segments” heading above.

The following table lists the Corporation’s banking centers by geographic market segment.

December 31

Midwest (Michigan)

Western:

California
Arizona

Texas
Florida
International

Total

2010

2009

2008

217

103
17

120
95
11
1

444

232

98
16

114
90
10
1

447

233

96
12

108
87
10
1

439

30

BALANCE SHEET AND CAPITAL FUNDS ANALYSIS

Total assets were $53.7 billion at December 31, 2010, a decrease of $5.5 billion from $59.2 billion at
December 31, 2009. On an average basis, total assets decreased $7.2 billion to $55.6 billion in 2010, from $62.8
resulting primarily from decreases in loans ($5.6 billion) and investment securities
billion in 2009,
available-for-sale ($2.2 billion), partially offset by an increase in interest-bearing deposits with banks ($751
million). Also, on an average basis, total liabilities decreased $6.2 billion to $49.5 billion in 2010, from $55.7
billion in 2009, resulting primarily from decreases of $4.7 billion in medium- and long-term debt, $3.8 billion in
other time deposits and $784 million in short-term borrowings, partially offset by an increase of $3.4 billion in
core deposits.

ANALYSIS OF INVESTMENT SECURITIES AND LOANS

(in millions)
December 31

U.S. Treasury and other U.S. government

agency securities

Residential mortgage-backed securities
State and municipal securities
Corporate debt securities:

Auction-rate debt securities
Other corporate debt securities
Equity and other non-debt securities:
Auction-rate preferred securities
Money market and other mutual funds

Total investment securities
available-for-sale

Commercial loans
Real estate construction loans:

Commercial Real Estate business line (a)
Other business lines (b)

Total real estate construction loans

Commercial mortgage loans:

Commercial Real Estate business line (a)
Other business lines (b)

Total commercial mortgage loans

Residential mortgage loans
Consumer loans:
Home equity
Other consumer

Total consumer loans

Lease financing
International loans:

Banks and other financial institutions
Commercial and industrial

Total international loans

Total loans

2010

2009

2008

2007

2006

$

$

131
6,709
39

$

103
6,261
47

$

79
7,861
66

$

36
6,165
3

46
3,497
4

1
26

570
84

150
50

706
99

147
42

936
70

-
46

-
46

-
46

-
69

$

$

7,560

22,145

$

$

7,416

21,690

$

$

9,201

27,999

$

$

6,296

28,223

$

$

3,662

26,265

1,826
427

2,253

1,937
7,830

9,767
1,619

1,704
607

2,311
1,009

2
1,130

1,132

3,002
459

3,461

1,889
8,568

10,457
1,651

1,817
694

2,511
1,139

1
1,251

1,252

3,844
633

4,477

1,725
8,764

10,489
1,852

1,796
796

2,592
1,343

7
1,746

1,753

4,100
716

4,816

1,467
8,581

10,048
1,915

1,616
848

2,464
1,351

27
1,899

1,926

3,453
750

4,203

1,544
8,115

9,659
1,677

1,654
769

2,423
1,353

47
1,804

1,851

$

40,236

$

42,161

$

50,505

$

50,743

$

47,431

(a) Primarily loans to real estate investors and developers.
(b) Primarily loans secured by owner-occupied real estate.

31

EARNING ASSETS

Total earning assets decreased $5.2 billion, or ten percent, to $49.4 billion at December 31, 2010, from
$54.6 billion at December 31, 2009. Average earning asset balances are reflected in the “Analysis of Net Interest
Income-Fully Taxable Equivalent” table of this financial review.

Loans

The following tables detail the Corporation’s average loan portfolio by loan type, business line and

geographic market.

(dollar amounts in millions)
Years Ended December 31
Average Loans By Loan Type:
Commercial loans
Real estate construction loans:

Commercial Real Estate business line (a)
Other business lines (b)

Total real estate construction loans

Commercial mortgage loans:

Commercial Real Estate business line (a)
Other business lines (b)

Total commercial mortgage loans

Residential mortgage loans
Consumer loans:
Home equity
Other consumer

Total consumer loans

Lease financing
International loans
Total loans
Average Loans By Business Line:
Middle Market
Commercial Real Estate
Global Corporate Banking
National Dealer Services
Specialty Businesses (c)

Total Business Bank

Small Business
Personal Financial Services

Total Retail Bank

Private Banking

Total Wealth & Institutional

Management

2010

2009

Change

Percent
Change

$

21,090

$

24,534

$

(3,444)

(14) %

2,404
435
2,839

2,000
8,244
10,244
1,607

1,746
683
2,429
1,086
1,222
40,517

12,074
5,218
4,562
3,459
4,973
30,286
3,524
1,862
5,386
4,819

$

$

3,538
602
4,140

1,694
8,721
10,415
1,756

1,796
757
2,553
1,231
1,533
46,162

13,932
6,437
6,006
3,466
5,561
35,402
3,948
2,059
6,007
4,758

$

$

(1,134)
(167)
(1,301)

306
(477)
(171)
(149)

(50)
(74)
(124)
(145)
(311)
(5,645)

(1,858)
(1,219)
(1,444)
(7)
(588)
(5,116)
(424)
(197)
(621)
61

$

$

(32)
(28)
(31)

18
(5)
(2)
(8)

(3)
(10)
(5)
(12)
(20)
(12) %

(13) %
(19)
(24)
-
(11)
(14)
(11)
(10)
(10)
1

4,819
26
40,517

4,758
(5)
46,162

61
31
(5,645)

1
N/M

$

$

Finance/Other
Total loans
Average Loans By Geographic Market:
Midwest
Western
Texas
Florida
Other Markets
International
Finance/Other
$
Total loans
(a) Primarily loans to real estate investors and developers.
(b) Primarily loans secured by owner-occupied real estate.
(c) Includes Entertainment, Energy, Leasing, Financial Services Division, Mortgage Banker Finance, and

(13) %
(11)
(12)
(10)
(14)
(18)
N/M

16,592
14,281
7,384
1,745
4,256
1,909
(5)
46,162

(2,082)
(1,576)
(904)
(167)
(603)
(344)
31
(5,645)

14,510
12,705
6,480
1,578
3,653
1,565
26
40,517

(12) %

(12) %

$

$

$

$

$

$

Technology and Life Sciences.

N/M - not meaningful.

32

Total loans were $40.2 billion at December 31, 2010, a decrease of $2.0 billion from $42.2 billion at
December 31, 2009. As shown in the tables above, total average loans decreased $5.6 billion, or 12 percent, to
$40.5 billion in 2010, compared to 2009, with declines in all geographic markets and in most business lines from
2009 to 2010 reflecting subdued loan demand from customers in a modestly recovering economic environment.
While average loan outstandings declined in 2010, the pace of decline continued to slow during each successive
quarter of 2010, and the Corporation was encouraged by the fourth quarter 2010 growth in the commercial loan
portfolio.

Average commercial real estate loans, consisting of real estate construction and commercial mortgage
loans, decreased $1.5 billion, or 10 percent, to $13.1 billion in 2010, from $14.6 billion in 2009. Commercial
mortgage loans are loans where the primary collateral is a lien on any real property. Real property is generally
considered primary collateral if the value of that collateral represents more than 50 percent of the commitment at
loan approval. Average loans to borrowers in the Commercial Real Estate business line, which primarily includes
loans to real estate investors and developers, represented $4.4 billion, or 34 percent of average total commercial
real estate loans, in 2010, compared to $5.2 billion, or 36 percent of average total commercial real estate loans, in
2009. The decrease in average commercial real estate loans to borrowers in the Commercial Real Estate business
line in 2010 largely resulted from the Corporation’s continued efforts to reduce exposure to the residential real
estate developer business. The remaining $8.7 billion and $9.4 billion of average commercial real estate loans in
other business lines in 2010 and 2009, respectively, were primarily loans secured by owner-occupied real estate.
In addition to the $13.1 billion of average 2010 commercial real estate loans discussed above, the Commercial
Real Estate business line also had $814 million of average 2010 loans not classified as commercial real estate on
the consolidated balance sheet.

Average residential mortgage loans, which primarily include mortgages originated and retained for

certain relationship customers, decreased $149 million, or eight percent, to $1.6 billion in 2010, from 2009.

For more information on real estate loans, refer to the “Commercial and Residential Real Estate Lending”

portion of the “Risk Management” section of this financial review.

Based on a continuation of modest growth in the economy, management expects a low single-digit
decrease in average loans for full-year 2011, compared to full-year 2010. Excluding the Commercial Real Estate
business line, management expects a low single-digit increase in average loans for full-year 2011, compared to
full-year 2010. This outlook does not include any impact from the pending acquisition of Sterling Bancshares,
Inc.

33

ANALYSIS OF INVESTMENT SECURITIES PORTFOLIO
(Fully Taxable Equivalent)

(dollar amounts in millions)
December 31, 2010

Available-for-sale

U.S. Treasury and other

U.S. government agency

securities

Residential mortgage-
backed securities
State and municipal
securities (b)

Corporate debt securities:
Auction-rate debt securities
Other corporate debt

securities

Equity and other non-debt

securities:

Auction-rate preferred

securities (c)

Money market and other

mutual funds (d)
Total investment securities

available-for-sale

Maturity (a)

Within 1 Year
Amount Yield

1 - 5 Years
Amount Yield

5 - 10 Years
Amount Yield

After 10 Years
Amount Yield

Weighted
Average
Maturity
Amount Yield Yrs./Mos.

Total

$ 131

0.31 % $

-

- % $

-

- % $

-

- % $

131 0.31 % 0/6

-

-

-

-

-

-

26

1.12

-

-

-

-

238

4.46

137

3.66

6,334 3.45

6,709 3.49

1

9.83

2

0.49

36 0.49

39 0.68

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1 0.89

-

-

1 0.89

26 1.11

570 1.00

570 1.00

84

-

84

-

13/6

16/6

26/1

0/9

-

-

$ 157

0.45 % $ 239

4.47 % $ 139

3.62 % $ 7,025 3.24 % $ 7,560 3.22 % 13/3

(a) Based on final contractual maturity.
(b) Primarily auction-rate securities.
(c) Auction-rate preferred securities have no contractual maturity and are excluded from weighted average maturity.
(d) Balances are excluded from the calculation of total yield and weighted average maturity.

Investment Securities Available-for-Sale

Investment securities available-for-sale increased $144 million to $7.6 billion at December 31, 2010,
from $7.4 billion at December 31, 2009, primarily reflecting an increase of $448 million of residential mortgage-
backed securities, as purchases more than offset early redemptions and maturities, partially offset by a $292
million decrease in auction-rate securities. On an average basis,
investment securities available-for-sale
decreased $2.2 billion to $7.2 billion in 2010, compared to $9.4 billion in 2009.

Auction-rate securities were purchased in 2008 as a result of the Corporation’s September 2008 offer to
repurchase, at par, auction-rate securities held by certain retail and institutional clients that were sold through
Comerica Securities, a broker/dealer subsidiary of Comerica Bank (the Bank). As of December 31, 2010, the
Corporation’s auction-rate securities portfolio was carried at an estimated fair value of $609 million, compared to
$901 million at December 31, 2009. During 2010, auction-rate securities with a par value of $308 million were
redeemed or sold, resulting in net securities gains of $8 million. As of December 31, 2010, approximately 50
percent of the aggregate ARS par value had been redeemed or sold since acquisition, for a cumulative net gain of
$27 million. For additional information on the repurchase of auction-rate securities, refer to the “Critical
Accounting Policies” section of this financial review and Note 4 to the consolidated financial statements.

Short-Term Investments

Short-term investments include federal funds sold and securities purchased under agreements to resell,
interest-bearing deposits with banks and other short-term investments. Federal funds sold offer supplemental
earnings opportunities and serve correspondent banks. Average federal funds sold and securities purchased under
agreements to resell decreased $12 million to $6 million during 2010, compared to 2009. Interest-bearing
deposits with banks are investments with banks in developed countries or international banking facilities of
foreign banks located in the United States and include deposits with the FRB. Average interest-bearing deposits
with banks increased $751 million to $3.2 billion in 2010, compared to 2009, due to an increase in average

34

deposits with the FRB. At December 31, 2010, interest-bearing deposits with the FRB totaled $1.3 billion,
compared to $4.8 billion at December 31, 2009. Other short-term investments include trading securities and loans
held-for-sale. Loans held-for-sale typically represent
residential mortgage loans and Small Business
Administration loans that have been originated with management’s intention to sell. Short-term investments,
other than loans held-for-sale, provide a range of maturities less than one year and are mostly used to manage
liquidity requirements of the Corporation. Average other short-term investments decreased $28 million to $126
million in 2010, compared to 2009.

Based on a continuation of modest growth in the economy, management expects average earning assets of
approximately $48 billion for full-year 2011, reflecting lower excess liquidity in addition to a decrease in average
loans. This outlook does not include any impact from the pending acquisition of Sterling Bancshares, Inc.

INTERNATIONAL CROSS-BORDER OUTSTANDINGS
(year-end outstandings exceeding 1% of total assets)

(in millions)
December 31
Mexico

Government
and Official
Institutions
$

Banks and
Other Financial
Institutions

$

-
-
-

2010
2009
2008

Commercial
and Industrial
$

645
681
883

-
-
-

Total

$

645
681
883

International assets are subject to general risks inherent in the conduct of business in foreign countries,
including economic uncertainties and each foreign government’s regulations. Risk management practices
minimize the risk inherent in international lending arrangements. These practices include structuring bilateral
agreements or participating in bank facilities, which secure repayment from sources external to the borrower’s
country. Accordingly, such international outstandings are excluded from the cross-border risk of that country.
Mexico, with cross-border outstandings of $645 million, or 1.20 percent of total assets at December 31, 2010,
was the only country with outstandings exceeding 1.00 percent of total assets at year-end 2010. There were no
countries with cross-border outstandings between 0.75 and 1.00 percent of total assets at year-end 2010.
Additional information on the Corporation’s Mexican cross-border risk is provided in the table above.

DEPOSITS AND BORROWED FUNDS

The Corporation’s average deposits and borrowed funds balances are detailed in the following table.

(dollar amounts in millions)
Years Ended December 31

Noninterest-bearing deposits
Money market and NOW deposits
Savings deposits
Customer certificates of deposit

Total core deposits

Other time deposits
Foreign office time deposits

Total deposits

Short-term borrowings
Medium- and long-term debt

Total borrowed funds

2010

2009

Change

Percent
Change

15,094
16,355
1,394
5,875

38,718
306
462

39,486

216
8,684

8,900

$

$

$

$

12,900
12,965
1,339
8,131

35,335
4,103
653

40,091

1,000
13,334

14,334

$

$

$

$

2,194
3,390
55
(2,256)

3,383
(3,797)
(191)

(605)

(784)
(4,650)

(5,434)

17 %
26
4
(28)

10
(93)
(29)

(2) %

(78) %
(35)

(38) %

$

$

$

$

35

Average deposits were $39.5 billion in 2010, a decrease of $605 million, or two percent, from $40.1
billion in 2009. Average core deposits increased $3.4 billion, or 10 percent, to $38.7 billion in 2010, compared to
2009. Within average core deposits, nearly all business lines showed increases from 2009 to 2010, including
Global Corporate Banking (31 percent), Specialty Businesses (25 percent) and Middle Market (12 percent).
Average core deposits increased in all geographic markets from 2009 to 2010, including Other Markets (36
percent), International (33 percent), Florida (21 percent), Texas (18 percent) and Western (8 percent). The
increase in average core deposits was, in part, due to an increased level of savings by customers during the
uncertain economic conditions throughout 2010. Average other time deposits decreased $3.8 billion and average
foreign office time deposits decreased $191 million in 2010, compared to 2009. Other time deposits represent
certificates of deposit issued to institutional investors in denominations in excess of $100,000 and to retail
customers in denominations of less than $100,000 through brokers, and are an alternative to other sources of
purchased funds.

The Corporation participated in the Transaction Account Guarantee Program (TAGP) from its inception
in October 2008 through June 30, 2010. During that time, the FDIC provided unlimited deposit insurance
protection on noninterest-bearing transaction accounts (as defined by the FDIC). In April 2010, the FDIC
adopted an interim rule extending the TAGP through December 31, 2010 for financial institutions that desired to
continue participation. The Corporation and its subsidiary banks elected to opt-out of the FDIC’s TAGP
extension, effective July 1, 2010. On July 1, 2010, deposit insurance reverted back to the statutory coverage limit
of $250,000 per depositor. The Dodd-Frank Wall Street Reform and Consumer Protection Act (The Financial
Reform Act) reinstated, for all financial institutions, unlimited deposit insurance protection for the period
December 31, 2010 through December 31, 2012 for traditional noninterest-bearing and certain interest-bearing
demand deposit accounts. As currently proposed by the FDIC, there will not be a separate assessment for
unlimited deposit insurance coverage for this period. For more information regarding the Financial Reform Act,
refer to the “The Dodd-Frank Wall Street Reform and Consumer Protection Act” section of this financial review.

Short-term borrowings primarily include federal funds purchased, securities sold under agreements to
repurchase and treasury tax and loan notes. Average short-term borrowings decreased $784 million, to $216
million in 2010, compared to $1.0 billion in 2009, mostly reflecting decreases in federal funds purchased.

The Corporation uses medium-term debt and long-term debt to provide funding to support earning assets.
On an average basis, medium- and long-term debt decreased $4.7 billion, or 35 percent, in 2010, compared to
2009. Medium- and long-term debt decreased $4.9 billion in 2010, to $6.1 billion at December 31, 2010,
compared to December 31, 2009, resulting primarily from the early redemptions of $2.0 billion of floating-rate
FHLB advances, at par, originally due in 2012 and 2013 and $515 million of 6.576% subordinated notes
originally due in 2037, along with maturities of $1.5 billion of FHLB advances and $950 million of medium-term
notes, partially offset by the issuance of $300 million of medium-term senior notes in 2010.

Further information on medium- and long-term debt is provided in Note 13 to the consolidated financial
statements. For further information regarding the redemption of trust preferred securities, refer to the “Capital”
section of this financial review and Note 13 to the consolidated financial statements.

CAPITAL

Total shareholders’ equity decreased $1.2 billion to $5.8 billion at December 31, 2010, compared to $7.0

billion at December 31, 2009.

In the first quarter 2010, the Corporation fully redeemed $2.25 billion of preferred stock issued in
connection with the Capital Purchase Program. The redemption was funded by the net proceeds from an $880
million common stock offering completed in the first quarter 2010 and from excess liquidity at the parent
company. In the second quarter 2010, the U.S. Treasury sold the related warrant, which granted the right to
purchase 11.5 million shares of the Corporation’s common stock at $29.40 per share. Prior to the public sale, the
warrant was separated into 11.5 million warrants to purchase one share of the Corporation’s common stock at an

36

exercise price of $29.40 per share. The sale of the warrant by the U.S. Treasury had no impact on the
Corporation’s equity. The warrants remained outstanding at December 31, 2010 and were included in “capital
surplus” on the consolidated balance sheets at their original fair value of $124 million.

In the fourth quarter 2010, the Board of Directors authorized the Corporation to repurchase up to
12.6 million shares of its outstanding common stock, and authorized the purchase of up to all 11.5 million
outstanding warrants. The shares and warrants may be purchased from time to time in the open market. The
shares may be held in treasury or retired. The share repurchase program superseded the Corporation’s previous
repurchase programs.

For 2011, management expects to commence a share repurchase program that, combined with dividend

payments, results in a payout of less than 50 percent of earnings.

Refer to Note 14 to the consolidated financial statements for additional information on the Capital

Purchase Program and the Corporation’s share repurchase program.

The following table presents a summary of changes in total shareholders’ equity in 2010:

(in millions)

Balance at January 1, 2010
Retention of earnings (net income less cash dividends declared)
Change in accumulated other comprehensive loss:
Investment securities available-for-sale
Cash flow hedges
Defined benefit and other postretirement plans

Total change in accumulated other comprehensive income (loss)

Issuance of common stock, net
Redemption of preferred stock
Repurchase of common stock under employee stock plans
Issuance of common stock under employee stock plans
Share-based compensation
Other

Balance at December 31, 2010

$

3
(16)
(40)

$

7,029
195

(53)
849
(2,250)
(4)
(2)
32
(3)

$

5,793

Further information on the change in accumulated other comprehensive income (loss) is provided in Note

15 to the consolidated financial statements.

In July 2010, the Financial Reform Act was signed into law, which prohibits holding companies with
more than $15 billion in assets from including trust preferred securities in Tier 1 capital, with a phase-in period
of three years, beginning on January 1, 2013. As of December 31, 2010, the Corporation had no outstanding trust
preferred securities. For further discussion of the Financial Reform Act, refer to “The Dodd-Frank Wall Street
Reform and Consumer Protection Act” section of this financial review.

The Corporation assesses capital adequacy against the risk inherent in the balance sheet, recognizing that
unexpected loss is the common denominator of risk and that common equity has the greatest capacity to absorb
unexpected loss. At December 31, 2010, the Corporation and its U.S. banking subsidiaries exceeded the capital
ratios required for an institution to be considered “well capitalized” by the standards developed under the Federal
Deposit Insurance Corporation Improvement Act of 1991. Refer to Note 21 to the consolidated financial
statements for further discussion of regulatory capital requirements and capital ratio calculations.

37

In December 2009, the Basel Committee on Banking Supervision (the Basel Committee) released
proposed Basel III guidance on bank capital and liquidity. In September 2010, the Basel Committee proposed
higher global minimum capital standards, including a minimum Tier 1 common capital ratio and additional
capital and liquidity requirements, with rules expected to be implemented between 2013 and 2019. Adoption in
the U.S. is expected to occur over a similar timeframe, but the final form of the U.S. rules is uncertain. Based on
information currently available,
the expected impacts from changes in the
components of capital and the calculation of risk-weighted assets will not be material. A higher degree of
uncertainty exists regarding the implementation and interpretation of the liquidity rules; however, based on
information currently available, the Corporation expects the liquidity requirements to be manageable. While
uncertainty exists in both the final form of the Basel III guidance and whether or not the Corporation will be
required to adopt the guidelines, the Corporation is closely monitoring their development.

the Corporation believes that

RISK MANAGEMENT

The Corporation assumes various types of risk in the normal course of business. Management classifies
risk exposures into six areas: (1) credit, (2) market, (3) liquidity, (4) operational, (5) compliance and (6) business
risks and considers credit risk as the most significant risk.

The Corporation continuously enhances its risk management capabilities with additional processes, tools
and systems designed to provide management with deeper insight into the Corporation’s various risks, assess its
appetite for risk, enhance the Corporation’s ability to control those risks and ensure that appropriate return is
received for the risks taken.

Specialized risk managers, along with the risk management committees in credit, market, liquidity,
operational and compliance are responsible for the day-to-day management of those respective risks. The
Enterprise-Wide Risk Management Committee has been established by the Enterprise Risk Committee of the Board
and charged with responsibility for establishing the governance over the risk management process, providing
oversight in managing the Corporation’s aggregate risk position and reporting on the comprehensive portfolio of
risks and the potential impact these risks can have on the Corporation’s risk profile and resulting capital level. The
Enterprise-Wide Risk Management Committee is principally composed of senior officers representing the different
risk areas and business units who are appointed by the Chairman and Chief Executive Officer of the Corporation.

The Board’s Enterprise Risk Committee meets quarterly and is chartered to assist the Board in promoting
the best interest of the Corporation by overseeing policies, procedures and risk practices relating to enterprise-
wide risk and compliance with bank regulatory obligations. Members of the Enterprise Risk Committee are
selected such that the committee comprises individuals whose experiences and qualifications can lead to broad
and informed views on risk matters facing the Corporation and the financial services industry, including, but not
limited to, risk matters that address credit, market, liquidity, operational, compliance and general business
conditions. A comprehensive risk report is submitted to the Enterprise Risk Committee each quarter providing
management’s view of the Corporation’s risk position.

CREDIT RISK

Credit risk represents the risk of loss due to failure of a customer or counterparty to meet its financial
obligations in accordance with contractual terms. The Corporation manages credit risk through underwriting,
periodically reviewing and approving its credit exposures using Board committee approved credit policies and
guidelines. Additionally,
risk through loan sales and loan portfolio
diversification, limiting exposure to any single industry, customer or guarantor, and selling participations and/or
syndicating to third parties credit exposures above those levels it deems prudent.

the Corporation manages credit

The governance structure is administered through the Strategic Credit Committee. The Strategic Credit
Committee is chaired by the Chief Credit Officer and approves recommendations to address credit risk matters
through credit policy, credit risk management practices, and required credit risk actions. In order to facilitate the
corporate credit risk management process, various other corporate functions provide the resources for the
Strategic Credit Committee to carry out its responsibilities.

38

Credit Administration provides the resources to manage the line of business transactional credit risk,
assuring that all exposure is risk rated according to the requirements of the credit risk rating policy and providing
business segment reporting support as necessary.

Portfolio Risk Analytics provides comprehensive reporting on portfolio credit

risks, continuous
assessment and verification of risk rating models, quarterly calculation of the allowance for loan losses and the
allowance for credit losses on lending-related commitments and calculation of economic credit risk capital.

The Special Assets Group is responsible for managing the recovery process on distressed or defaulted

loans and loan sales.

39

ANALYSIS OF THE ALLOWANCE FOR LOAN LOSSES

(dollar amounts in millions)
Years Ended December 31

Balance at beginning of year
Loan charge-offs:

Domestic

Commercial
Real estate construction:

Commercial Real Estate

business line (a)
Other business lines (b)

Total real estate
construction

Commercial mortgage:

Commercial Real Estate

business line (a)
Other business lines (b)

Total commercial mortgage

Residential mortgage
Consumer
Lease financing

International

Total loan charge-offs

Recoveries:
Domestic

Commercial
Real estate construction
Commercial mortgage
Residential mortgage
Consumer
Lease financing

International

Total recoveries

Net loan charge-offs
Provision for loan losses
Foreign currency translation
adjustment

2010

2009

2008

2007

2006

$

985

$

770

$

557

$

493

$

516

195

175
4

179

53
138

191
14
39
1
8

627

25
11
16
1
4
5
1

63

564
480

-

375

234
1

235

90
81

171
21
34
36
23

895

18
1
3
-
2
1
2

27

868
1,082

1

183

184
1

185

72
28

100
7
22
1
2

500

17
3
4
-
3
1
1

29

471
686

(2)

89

37
5

42

15
37

52
-
13
-
-

196

27
-
4
-
4
4
8

47

149
212

1

44

-
-

-

4
13

17
-
23
10
4

98

27
-
4
-
3
-
4

38

60
37

-

Balance at end of year

$

901

$

985

$

770

$

557

$

493

Allowance for loan losses as a

percentage of total loans at end of
year

Net loan charge-offs during the year
as a percentage of average loans
outstanding during the year

2.24 %

2.34 %

1.52 %

1.10 %

1.04 %

1.39

1.88

0.91

0.30

0.13

(a) Primarily charge-offs of loans to real estate investors and developers.
(b) Primarily charge-offs of loans secured by owner-occupied real estate.

40

Allowance for Credit Losses

The allowance for credit losses includes both the allowance for loan losses and the allowance for credit
losses on lending-related commitments. The allowance for loan losses represents management’s assessment of
probable, estimable losses inherent in the Corporation’s loan portfolio. The allowance for credit losses on
lending-related commitments, included in “accrued expenses and other liabilities” on the consolidated balance
sheets, provides for probable losses inherent in lending-related commitments, including unused commitments to
extend credit and letters of credit.

The allowance for loan losses includes specific allowances, based on individual evaluations of certain
loans and loan relationships, and allowances for pools of loans with similar risk characteristics for the remaining
business and retail loans. The Corporation defines business loans as those belonging to the commercial, real
estate construction, commercial mortgage, lease financing and international loan portfolios. Retail loans consist
of traditional residential mortgage, home equity and other consumer loans.

The total allowance for loan losses is sufficient to absorb incurred losses inherent in the total loan
portfolio. Unanticipated economic events, including political, economic and regulatory instability could cause
changes in the credit characteristics of the portfolio and result in an unanticipated increase in the allowance.
Inclusion of other industry-specific portfolio exposures in the allowance, as well as significant increases in the
current portfolio exposures, could also increase the amount of the allowance. Any of these events, or some
combination thereof, may result in the need for additional provision for loan losses in order to maintain an
allowance that complies with credit risk and accounting policies. The allowance for loan losses was $901 million
at December 31, 2010, compared to $985 million at December 31, 2009, a decrease of $84 million, or eight
percent. The decrease resulted primarily from improvements in credit quality, including a decline of $2.2 billion
in the Corporation’s internal watch list loans from December 31, 2009 to December 31, 2010. The Corporation’s
internal watch list
is generally consistent with loans in the Special Mention, Substandard and Doubtful
(nonaccrual) categories defined by regulatory authorities. Additional indicators of improved credit quality
included a decrease in the inflow to nonaccrual (based on an analysis of nonaccrual loans with balances greater
than $2 million) of $369 million and a $305 million decrease in net credit-related charge-offs from December 31,
2009 to December 31, 2010. The $84 million decrease in the allowance for loan losses consisted of decreases in
the Commercial Real Estate (primarily the Western market), Middle Market (primarily the Midwest market) and
Global Corporate Banking business lines, partially offset by an increase in industry specific allowances for
customers in the Private Banking business line (mostly the Midwest market). The allowance for loan losses as a
percentage of total period-end loans was 2.24 percent at December 31, 2010, compared to 2.34 percent at
December 31, 2009. Nonperforming loans of $1.1 billion at December 31, 2010 decreased $58 million, or five
percent, compared to December 31, 2009. As noted above, all large nonperforming loans are individually
reviewed each quarter for potential charge-offs and reserves. Charge-offs are taken as amounts are determined to
be uncollectible. A measure of the level of charge-offs already taken on nonperforming loans is the current book
balance as a percentage of the contractual amount owed. At December 31, 2010, nonperforming loans were
charged-off to 54 percent of the contractual amount, compared to 56 percent at December 31, 2009. This level of
write-downs is consistent with losses experienced on loan defaults in 2010 and in recent years. The allowance as
a percentage of total nonperforming loans, a ratio which results from the actions noted above, was 80 percent at
December 31, 2010, compared to 83 percent at December 31, 2009. The Corporation’s loan portfolio is primarily
composed of business loans, which, in the event of default, are typically carried on the books at fair value as
nonperforming assets for a longer period of time than are consumer loans, which are generally fully charged off
when they become nonperforming, resulting in a lower nonperforming loan allowance coverage when compared
to banking organizations with higher concentrations of consumer loans. The allowance for loan losses as a
multiple of total annual net loan charge-offs increased to 1.6 times for the year ended December 31, 2010,
compared to 1.1 times for the year ended December 31, 2009, as a result of the decline in net loan charge-offs in
2010.

41

The allowance as a percentage of total loans, as a percentage of total nonperforming loans and as a multiple of

annual net loan charge-offs is provided in the following table.

Years Ended December 31

Allowance for loan losses as a percentage of total loans at end of year
Allowance for loan losses as a percentage of total nonperforming loans at end of year
Allowance for loan losses as a multiple of total net loan charge-offs for the year

ALLOCATION OF THE ALLOWANCE FOR LOAN LOSSES

2009

2008

2010
2.24 % 2.34 % 1.52 %
83
1.1 x

80
1.6 x

84
1.6 x

(dollar amounts in millions)
December 31

Allocated
Allowance

2010
Allowance
Ratio (a) % (b)

2009

2008

2007

2006

Allocated
Allowance % (b)

Allocated
Allowance % (b)

Allocated
Allowance % (b)

Allocated
Allowance % (b)

Business loans
Commercial
Real estate construction
Commercial mortgage
Lease financing
International

Total business loans

Retail loans

Residential mortgage
Consumer

Total retail loans

Total loans

$

$

422
102
272
8
20
824

29
48
77
901

1.91 % 54 % $ 456
4.52
6
194
24
2.78
219
3
0.79
13
1.75
3
33
90
2.27
915

51 % $ 380
194
8
147
25
6
3
12
3
739
90

55 % $ 288
128
9
92
21
15
3
11
3
534
91

55 % $320
29
9
80
20
27
3
13
4
469
91

4
1.80
32
6
2.07
38
1.96
10
70
2.24 % 100 % $ 985

4
4
27
6
10
31
100 % $ 770

4
5
9

2
21
23
100 % $ 557

4
5
9

2
22
24
100 % $493

55 %
9
20
3
4
91

4
5
9
100 %

(a) Allocated allowance as a percentage of related loans outstanding.

(b) Loans outstanding as a percentage of total loans.

The allowance for credit

losses on lending-related commitments includes specific allowances, based on
individual evaluations of certain letters of credit in a manner consistent with business loans, and allowances based on
the pool of the remaining letters of credit and all unused commitments to extend credit within each internal risk rating.
A probability of draw estimate is applied to the commitment amount, and the result is multiplied by standard reserve
factors consistent with business loans. In general, the probability of draw for letters of credit is considered certain for
all letters of credit supporting loans and for letters of credit assigned an internal risk rating generally consistent with
regulatory defined substandard or doubtful. Other letters of credit and all unfunded commitments have a lower
probability of draw.

42

The allowance for credit losses on lending-related commitments was $35 million at December 31, 2010, a
decrease of $2 million from $37 million at December 31, 2009. The decrease resulted primarily from improved
credit quality in unfunded commitments in the Midwest and Western markets and a decrease in specific reserves
for letters of credit. An analysis of the changes in the allowance for credit losses on lending-related commitments
is presented below.

(dollar amounts in millions)
Years Ended December 31
Balance at beginning of year
Less: Charge-offs on lending-related commitments

(a)

Add: Provision for credit losses on lending-related

commitments

Balance at end of year
(a) Charge-offs result from the sale of unfunded lending-related commitments.

$

2010
37

$

2009
38

$

2008
21

$

2007
26

$

2006
33

$

-

(2)
35

1

-
37

$

1

18
38

$

4

(1)
21

$

12

5
26

$

SUMMARY OF NONPERFORMING ASSETS AND PAST DUE LOANS

(dollar amounts in millions)
December 31
Nonaccrual loans:
Business loans:
Commercial
Real estate construction:

Commercial Real Estate business line (a)
Other business lines (b)

Total real estate construction

Commercial mortgage:

Commercial Real Estate business line (a)
Other business lines (b)

Total commercial mortgage

Lease financing
International
Total nonaccrual business loans

Retail loans:

Residential mortgage
Consumer:

Home equity
Other consumer

Total consumer

Total nonaccrual retail loans

Total nonaccrual loans

Reduced-rate loans
Total nonperforming loans
Foreclosed property
Total nonperforming assets
Nonperforming loans as a percentage of total loans
Nonperforming assets as a percentage of total loans

and foreclosed property

Allowance for loan losses as a percentage of total

nonperforming loans

Loans past due 90 days or more and still accruing
Loans past due 90 days or more and still accruing as

a percentage of total loans

2010

2009

2008

2007

2006

$ 252

$ 238

$ 205

$

75

$

97

259
4
263

181
302
483
7
2
1,007

55

5
13
18
73
1,080
43
1,123
112
$1,235

507
4
511

127
192
319
13
22
1,103

50

8
4
12
62
1,165
16
1,181
111
$1,292

429
5
434

132
130
262
1
2
904

7

3
3
6
13
917
-
917
66
$ 983

161
6
167

66
75
141
-
4
387

1

2
1
3
4
391
13
404
19
$ 423

18
2
20

18
54
72
8
12
209

1

3
1
4
5
214
-
214
18
$ 232

2.79 %

2.80 %

1.82 %

0.80 %

0.45 %

3.06

3.06

1.94

0.83

0.49

80
62

$

83
$ 101

84
$ 125

138
54

$

231
14

$

0.15 %

0.24 %

0.25 %

0.11 %

0.03 %

(a) Primarily loans to real estate investors and developers.
(b) Primarily loans secured by owner-occupied real estate.

43

Nonperforming Assets

Nonperforming assets include loans on nonaccrual status, loans which have been renegotiated to less than
the original contractual rates (reduced-rate loans) and real estate which has been acquired through foreclosure
and awaiting disposition (foreclosed property). Nonperforming assets decreased $57 million to $1.2 billion at
December 31, 2010, from $1.3 billion at December 31, 2009. The table above presents nonperforming balances
by category.

The $85 million decrease in nonaccrual loans at December 31, 2010, compared to December 31, 2009,
resulted primarily from a decrease in nonaccrual real estate construction loans ($248 million) (primarily
residential real estate developments), partially offset by an increase in commercial mortgage loans ($164
million). Nonperforming assets as a percentage of total loans and foreclosed property was 3.06 percent at both
December 31, 2010 and 2009.

The following table presents a summary of changes in nonaccrual loans.

(in millions)

2010

2009

Balance at January 1
Loans transferred to nonaccrual (a)
Nonaccrual business loan gross charge-offs (b)
Loans transferred to accrual status (a)
Nonaccrual business loans sold (c)
Payments/Other (d)
$
Balance at December 31
(a) Based on an analysis of nonaccrual loans with book balances greater than $2 million.

$

1,165
918
(573)
(14)
(144)
(272)
1,080

(b) Analysis of gross loan charge-offs:

Nonaccrual business loans
Performing watch list loans
Retail loans

Total gross loan charge-offs

(c) Analysis of loans sold:

Nonaccrual business loans
Performing watch list loans

Total loans sold

$

$

$

$

573
1
53

627

144
63

207

$

$

$

$

$

$

917
1,287
(838)
(8)
(64)
(129)
1,165

838
2
55

895

64
31

95

(d) Includes net changes related to nonaccrual loans with balances less than $2 million, payments on nonaccrual
loans with book balances greater than $2 million, transfers of nonaccrual loans to foreclosed property and
retail loan charge-offs. Excludes business loan gross charge-offs and nonaccrual business loans sold.

The following table presents the number of nonaccrual loan relationships and balance by size of

relationship at December 31, 2010.

(dollar amounts in millions)
Nonaccrual Relationship Size

Number of
Relationships

Balance

227
Under $2 million (a)
179
$2 million - $5 million
248
$5 million - $10 million
342
$10 million - $25 million
84
Greater than $25 million
1,080
Total loan relationships at December 31, 2010
(a) For nonaccrual balances under $2 million, number of relationships is represented by the number of borrowers.

946
58
36
23
3
1,066

$

$

44

There were 97 loan relationships with balances greater than $2 million, totaling $918 million, transferred
to nonaccrual status in 2010, a decrease of $369 million when compared to $1.3 billion in 2009. Of the transfers
to nonaccrual in 2010, $368 million were from Commercial Real Estate business line (including $188 million,
$65 million and $51 million from the Western, Midwest and Florida markets, respectively), $341 million were
from the Middle Market business line (including $193 million and $85 million from the Midwest and Western
markets, respectively), and $87 million were from Private Banking. There were 33 loan relationships greater than
$10 million, totaling $620 million, transferred to nonaccrual in 2010, of which $267 million and $237 million
were to companies in the Commercial Real Estate and Middle Market business lines, respectively.

In 2010, the Corporation sold $144 million of nonaccrual business loans at prices approximating carrying
value plus reserves, which were primarily from the Commercial Real Estate and Global Corporate Banking
business lines.

The following table presents a summary of nonaccrual loans at December 31, 2010 and loan relationships
transferred to nonaccrual and net loan charge-offs during the year ended December 31, 2010, based primarily on
Standard Industrial Classification (SIC) industry categories.

(dollar amounts in millions)

December 31, 2010

Year Ended
December 31, 2010

Industry Category
Real Estate
Services
Residential Mortgage
Retail Trade
Hotels, etc.
Finance
Wholesale Trade
Manufacturing
Holding & Other Invest. Co.
Transportation & Warehousing
Entertainment
Information
Automotive Supplier
Contractors
Natural Resources
Other (b)
Total

Nonaccrual Loans
$

Loans Transferred to
Nonaccrual (a)

541
107
55
53
52
48
40
36
28
25
23
22
19
12
9
10
1,080

50 % $
10
5
5
5
4
4
3
3
2
2
2
2
1
1
1

543
57
10
42
47
16
49
17
12
36
40
-
14
32
-
3
918

60 % $
7
1
5
5
2
5
2
1
4
4
-
1
3
-
-

Net Loan Charge-Offs
(Recoveries)
289
63
13
40
5
8
12
27
10
18
17
1
7
20
3
31
564

52 %
11
2
7
1
1
2
5
2
3
3
-
1
4
1
5
100 %

$

100 % $

100 % $

(a) Based on an analysis of nonaccrual loan relationships with book balances greater than $2 million.
(b) Consumer, excluding residential mortgage and certain personal purpose nonaccrual loans and net charge-offs, are included

in the “Other” category.

Business loans are generally placed on nonaccrual status when management determines that full
collection of principal or interest is unlikely or when principal or interest payments are 90 days past due, unless
the loan is fully collateralized and in the process of collection. Residential mortgage and home equity loans are
generally placed on nonaccrual status and charged off to current appraised values, less costs to sell, during the
foreclosure process, normally no later than 180 days past due. Other consumer loans are generally not placed on
nonaccrual status and are charged off at no later than 120 days past due, earlier if deemed uncollectible. Loan
amounts in excess of probable future cash collections are charged off to an amount that management ultimately
expects to collect. At the time a loan is placed on nonaccrual status, interest previously accrued but not collected
is charged against current income. Income on such loans is then recognized only to the extent that cash is
received and the future collection of principal is probable. Generally, a loan may be returned to accrual status
when all delinquent principal and interest have been received and the Corporation expects repayment of the
remaining contractual principal and interest, or when the loan is both well secured and in the process of
collection. Refer to Note 1 to the consolidated financial statements for a further discussion of impaired loans.

45

At December 31, 2010, troubled debt restructurings totaled $165 million, of which $121 million were
included in nonperforming loans ($78 million nonaccrual loans and $43 million reduced-rate loans) and $44
million were included in performing loans. Performing restructured loans included $34 million of commercial
loans (primarily in the Middle Market business line) and $10 million of commercial mortgage loans (within the
Middle Market and Small Business Banking business lines) at December 31, 2010. At December 31, 2009,
troubled debt restructurings totaled $34 million, including $11 million performing restructured loans, $7 million
nonaccrual loans and $16 million reduced-rate loans.

Loans past due 90 days or more and still accruing interest generally represent loans that are well
collateralized and in a continuing process that is expected to result in repayment or restoration to current status.
Loans past due 90 days or more and still accruing decreased $39 million to $62 million at December 31, 2010,
compared to $101 million at December 31, 2009, and are summarized in the following table. Loans past due
30-89 days decreased $270 million to $281 million at December 31, 2010, compared to $559 million at
December 31, 2009.

Loans past due 90 days or more and still accruing are summarized in the following table.

(in millions)
December 31
Business loans:
Commercial
Real estate construction
Commercial mortgage
International

Total business loans

Retail loans:

Residential mortgage
Consumer

Total retail loans

Total loans past due 90 days or more and still accruing

2010

2009

$

$

3
22
16
-
41

7
14
21
62

$

$

10
30
31
2
73

15
13
28
101

The following table presents a summary of total internal watch list loans at December 31, 2010 and 2009.
Watch list loans that meet certain criteria are individually subjected to quarterly credit quality reviews, and the
Corporation may establish specific allowances for such loans. Consistent with the decrease in nonaccrual loans
from December 31, 2009 to December 31, 2010, total watch list loans decreased both in dollars and as a
percentage of the total loan portfolio. The decrease in watch list loans primarily reflected positive migration
patterns across most loan portfolios.

(dollar amounts in millions)
December 31
Total watch list loans
As a percentage of total loans

2010

2009

$

5,542
13.8 %

$

7,730
18.3 %

The following table presents a summary of foreclosed property by property type as of December 31, 2010

and 2009.

(in millions)
December 31
Construction, land development and other land
Single family residential properties
Multi-family residential properties
Other non-land, nonresidential properties
Total foreclosed property

46

2010

2009

$

$

60
20
-
32
112

$

$

62
16
3
30
111

At December 31, 2010, foreclosed property totaled $112 million and consisted of approximately 230
properties, compared to $111 million and approximately 210 properties at December 31, 2009. The following
table presents a summary of changes in foreclosed property.

(in millions)

Balance at January 1
Acquired in foreclosure
Write-downs
Foreclosed property sold (a)
Capitalized expenditures
Balance at December 31
(a) Net gain (loss) on foreclosed property sold

2010

2009

$

$
$

111
104
(23)
(81)
1
112
7

$

$
$

66
114
(34)
(37)
2
111
(2)

At December 31, 2010, there were 10 foreclosed properties each with a carrying value greater than $2
million, totaling $61 million, compared to 13 foreclosed properties totaling $61 million at December 31, 2009.
Of the foreclosed properties with balances greater than $2 million at December 31, 2010, $46 million were from
the Commercial Real Estate business line and $15 million were from the Middle Market business line. At
December 31, 2010, there were two foreclosed properties with carrying values greater than $10 million, totaling
$29 million, both in the Commercial Real Estate business line. There were no foreclosed properties with carrying
values greater than $10 million at December 31, 2009.

Concentration of Credit Risk

Concentrations of credit risk may exist when a number of borrowers are engaged in similar activities, or
activities in the same geographic region, and have similar economic characteristics that would cause them to be
similarly impacted by changes in economic or other conditions. The Corporation has a concentration of credit
risk with the automotive industry. Loans to automotive dealers and to borrowers involved with automotive
production are reported as automotive, as management believes these loans have similar economic characteristics
that might cause them to react similarly to changes in economic conditions. This aggregation involves the
exercise of judgment. Included in automotive production are: (a) original equipment manufacturers and Tier 1
and Tier 2 suppliers that produce components used in vehicles and whose primary revenue source is automotive-
related (“primary” defined as greater than 50%) and (b) other manufacturers that produce components used in
vehicles and whose primary revenue source is automotive-related. Loans less than $1 million and loans recorded
in the Small Business business line are excluded from the definition. Foreign ownership consists of North
American affiliates of foreign automakers and suppliers.

The following table presents a summary of loans outstanding to companies related to the automotive

industry.

(in millions)
December 31

Production:
Domestic
Foreign

Total production

Dealer:

Floor plan
Other

Total dealer
Total automotive

2010

2009

Loans
Outstanding

Percent of
Total Loans

Loans
Outstanding

Percent of
Total Loans

$

2.1 %

9.9 %
12.0 % $

760
181
941

1,324
2,106
3,430
4,371

2.2 %

8.2 %
10.4 %

$

$

609
222
831

1,961
2,050
4,011
4,842

47

At December 31, 2010, dealer loans, as shown in the table above, totaled $4.0 billion, of which
approximately $2.6 billion, or 65 percent, were to foreign franchises, $914 million, or 23 percent, were to
domestic franchises and $478 million, or 12 percent, were to other. Other dealer loans include obligations where
a primary franchise was indeterminable, such as loans to large public dealership consolidators and rental car,
leasing, heavy truck and recreation vehicle companies.

Nonaccrual loans to automotive borrowers totaled $19 million, or two percent of total nonaccrual loans at
December 31, 2010. Total automotive net loan charge-offs were $11 million in 2010. The following table
presents a summary of automotive net loan charge-offs for the years ended December 31, 2010 and 2009.

(in millions)
Years Ended December 31

Production:
Domestic
Foreign

Total production

Dealer

Total automotive net loan charge-offs

2010

2009

$

$

5
2

7
4
11

$

$

50
4

54
-
54

All other industry concentrations, as defined by management, individually represented less than 10

percent of total loans at December 31, 2010.

Commercial and Residential Real Estate Lending

The following table summarizes the Corporation’s commercial real estate loan portfolio by loan category

as of December 31, 2010 and 2009.

(in millions)
December 31

Real estate construction loans:

Commercial Real Estate business line (a)
Other business lines (b)

Total real estate construction loans

Commercial mortgage loans:

Commercial Real Estate business line (a)
Other business lines (b)

Total commercial mortgage loans

(a) Primarily loans to real estate investors and developers.
(b) Primarily loans secured by owner-occupied real estate.

2010

2009

$1,826
427

$2,253

$1,937
7,830

$9,767

$ 3,002
459

$ 3,461

$ 1,889
8,568

$10,457

The Corporation limits risk inherent in its commercial real estate lending activities by limiting exposure
to those borrowers directly involved in the commercial real estate markets and adhering to conservative policies
on loan-to-value ratios for such loans. Commercial real estate loans, consisting of real estate construction and
commercial mortgage loans, totaled $12.0 billion at December 31, 2010, of which $3.8 billion, or 31 percent,
were to borrowers in the Commercial Real Estate business line, which primarily consisted of loans to residential
real estate investors and developers. The remaining $8.2 billion, or 69 percent, of commercial real estate loans in
other business lines consisted primarily of owner-occupied commercial mortgages which bear credit
characteristics similar to non-commercial real estate business loans.

48

The real estate construction loan portfolio totaled $2.3 billion at December 31, 2010 and included
approximately 500 loans, of which approximately 45 percent had balances less than $1 million. The real estate
construction loan portfolio primarily contains loans made to long-time customers with satisfactory completion
experience. However, the significant and sudden decline in residential real estate activity that began in late 2008
in the Western, Florida and Midwest markets proved extremely difficult for many of the smaller residential real
estate developers. Of the $1.8 billion of real estate construction loans in the Commercial Real Estate business
line, $259 million were on nonaccrual status at December 31, 2010, including single family projects totaling $79
million (primarily in the Western and Florida markets), multi-use projects totaling $71 million (mostly in the
Western market) and residential land development projects totaling $56 million (primarily in the Western
market). Real estate construction loan net charge-offs in the Commercial Real Estate business line totaled $164
million for 2010, including $57 million from single family projects (mostly the Western market), $47 million
from residential land development projects, $28 million from multi-use projects (primarily the Texas and
Western markets) and $24 million from retail projects (primarily the Western and Midwest markets).

When the Corporation enters into a loan agreement with a borrower for a real estate construction loan, an
interest reserve is often included in the amount of the loan commitment. An interest reserve allows the borrower
to add interest charges to the outstanding loan balance during the construction period. Interest reserves are
established on substantially all real estate construction loans in the Corporation’s Commercial Real Estate
business line. Interest reserves provide an effective means to address the cash flow characteristics of a real estate
construction loan. Loan agreements containing an interest reserve generally require more equity to be contributed
by the borrower to the construction project at inception. Real estate construction loans with interest reserves are
subject to substantially the same Board committee approved underwriting standards as loans without interest
reserves. Interest that has been added to the balance of a real estate construction loan through the use of an
interest reserve is recognized as income only if the Corporation expects full collection of the remaining
contractual principal and interest payments. If a real estate construction loan with interest reserves is in default
and deemed uncollectible, interest is no longer funded through the interest reserve. Interest previously recognized
from interest reserves generally is not reversed against current income when a construction loan with interest
reserves is placed on nonaccrual status. All real estate construction loans are closely monitored through physical
inspections, reconciliation of draw requests, review of rent rolls and operating statements and quarterly portfolio
reviews performed by the Corporation’s senior management. When appropriate, extensions, renewals and
restructurings of real estate construction loans are approved after giving consideration to the project’s status, the
borrower’s financial condition, and the collateral protection based on current market conditions, and typically
strengthen the Corporation’s position by adding additional collateral and controls and/or requiring amortization
on the existing debt.

The commercial mortgage loan portfolio totaled $9.8 billion at December 31, 2010 and included
approximately 7,900 loans, of which approximately 75 percent had balances of less than $1 million. The
commercial mortgage loan portfolio included $1.9 billion in the Commercial Real Estate business line and
$7.8 billion in other business lines. Included in commercial mortgage loans in the Commercial Real Estate
business line were $181 million of nonaccrual loans at December 31, 2010, which consisted primarily of
residential land carry projects totaling $30 million (primarily in the Western and Midwest markets), multi-family
projects totaling $28 million (primarily in the Florida market), retail projects totaling $24 million (mostly in the
Midwest market), office projects totaling $22 million (primarily in the Western market) and nonresidential land
carry projects totaling $22 million. Commercial mortgage loan net charge-offs in the Commercial Real Estate
business line totaled $49 million for 2010, primarily from residential
land carry, office projects and
nonresidential land carry ($15 million, $11 million, and $11 million, respectively). Commercial mortgage loans
in other business lines included $302 million of nonaccrual loans at December 31, 2010, an increase of
$110 million compared to the same period in the prior year, largely due to an increase in loans to real estate
investors in the Middle Market business line in the Midwest market.

49

The geographic distribution and project type of commercial real estate loans are important factors in
diversifying credit risk within the portfolio. The following table reflects real estate construction and commercial
mortgage loans to borrowers in the Commercial Real Estate business line by project type and location of
property.

(dollar amounts in millions)
Project Type:

Real estate construction loans:

Commercial Real Estate business

line:
Residential:

Single family
Land development

Total residential

Other construction:
Multi-family
Retail
Multi-use
Office
Commercial
Land development
Other

December 31, 2010

Location of Property

Western Michigan Texas Florida

Markets Total

Other

December 31, 2009

% of
Total

Total

% of
Total

$

$

99
60

159

129
119
117
57
-
4
10

18
9

27

-
48
5
6
14
9
-

$ 22 $
52

74

227
262
52
42
33
11
6

$

39
9

48

131
27
-
14
-
-
2

18
27

45

92
29
27
-
-
-
-

$ 196
157

10 % $ 500
9
305

17 %
10

353

19

579
485
201
119
47
24
18

32
27
11
6
3
1
1

805

774
773
242
252
70
36
50

27

26
26
8
8
2
1
2

Total

$ 595

$

109

$ 707 $ 222

$ 193

$1,826 100 % $3,002

100 %

Commercial mortgage loans:

Commercial Real Estate business

line:
Residential:

Single family
Land carry

Total residential

Other commercial mortgage:

Multi-family
Retail
Multi-use
Land carry
Office
Commercial
Other

$

$

13
45

58

51
128
115
140
147
49
7

3
28

31

55
98
16
45
34
33
47

$ 17 $
18

35

138
16
31
20
12
17
-

$

6
31

37

115
64
-
18
11
-
-

30
11

41

45
80
87
16
17
22
61

$

69
133

202

404
386
249
239
221
121
115

4 % $
6

10

22
20
13
12
11
6
6

41
216

257

411
327
236
271
194
126
67

2 %
12

14

22
17
12
14
10
7
4

Total

$ 695

$

359

$ 269 $ 245

$ 369

$1,937 100 % $1,889

100 %

Residential real estate development outstandings of $555 million at December 31, 2010 decreased $507
million, or 48 percent, from $1.1 billion at December 31, 2009. Net credit-related charge-offs in the Commercial
Real Estate business line totaled $221 million in 2010, including $105 million in the Western market (residential
real estate development business), $61 million in the Midwest market and $26 million in the Texas market,
compared to $335 million in 2009, including $179 in the Western market (primarily residential real estate
development business) and $80 million in the Midwest market.

50

The following table summarizes the Corporation’s residential mortgage and home equity loan portfolio

by geographic market as of December 31, 2010.

(dollar amounts in millions)

Geographic market:

Midwest
Western
Texas
Florida
Other Markets

Total

December 31, 2010

Residential
Mortgage Loans

% of
Total

Home
Equity Loans

% of
Total

$

609
541
244
223
2

38 % $
33
15
14
-

$

1,619

100 % $

1,045
456
156
47
-

1,704

61 %
27
9
3
-

100 %

Residential real estate loans, which consist of traditional residential mortgages and home equity loans and
lines of credit,
totaled $3.3 billion at December 31, 2010. Residential mortgages totaled $1.6 billion at
December 31, 2010, and were primarily larger, variable-rate mortgages originated and retained for certain private
banking relationship customers. Of the $1.6 billion of residential mortgage loans outstanding, $55 million were
on nonaccrual status at December 31, 2010. The home equity portfolio totaled $1.7 billion at December 31, 2010,
of which $1.5 billion was outstanding under primarily variable-rate, interest-only home equity lines of credit and
$211 million consisted of closed-end home equity loans. Of the $1.7 billion of home equity loans outstanding, $5
million were on nonaccrual status at December 31, 2010. A substantial majority of the home equity portfolio was
secured by junior liens.

The Corporation rarely originates residential real estate loans with a loan-to-value ratio above 100 percent
at origination, has no sub-prime mortgage programs and does not originate payment-option adjustable-rate
mortgages or other nontraditional mortgages that allow negative amortization. A significant majority of
residential mortgage originations are sold in the secondary market. Since 2008, the Corporation has used a third
party to originate, document and underwrite residential mortgage loans on behalf of the Corporation. Under this
arrangement, the third party assumes any repurchase liability for the loans it originates. The Corporation has
repurchase liability exposure for residential mortgage loans originated prior to 2008, however based on historical
experience, the Corporation believes such exposure, which could be triggered by early payment defaults by
borrowers or by underwriting discrepancies, is minimal. The residential real estate portfolio is principally located
within the Corporation’s primary geographic markets. The economic recession and significant declines in home
values in the Western, Florida and Midwest markets following the financial market turmoil beginning in the fall
of 2008 adversely impacted the residential real estate portfolio. At December 31, 2010, the Corporation estimated
that, of the $7 million total residential mortgage loans past due 90 days or more and still accruing interest,
approximately $1 million exceeded 90 percent of the current value of the underlying collateral, based on S&P/
Case-Shiller home price indices. To account for this exposure, the Corporation factors changes in home values
into estimated loss ratios for residential real estate loans, using index-based estimates by major metropolitan area,
resulting in an increased allowance allocated for residential real estate loans when home values decline.
the Corporation
Additionally,
periodically reviews home equity lines of credit and makes line reductions or converts outstanding balances at
line maturity to closed-end, amortizing loans when necessary.

to mitigate increasing credit exposure due to depreciating home values,

Shared National Credits

Shared National Credit (SNC) loans are facilities greater than $20 million shared by three or more
federally supervised financial institutions that are reviewed by regulatory authorities at the agent bank level. The
Corporation generally seeks to obtain ancillary business at the origination of a SNC relationship. Loans classified
as SNC loans (approximately 950 borrowers at December 31, 2010) totaled $7.3 billion at December 31, 2010, a
decline of $1.8 billion from $9.1 billion at December 31, 2009. SNC net loan charge-offs totaled $92 million and

51

$172 million for the years ended December 31, 2010 and 2009, respectively. Nonaccrual SNC loans decreased
$20 million to $274 million during the year ended December 31, 2010, from $294 million at December 31, 2009.
SNC loans, diversified by both business line and geographic market, comprised approximately 18 percent and 22
percent of total loans at December 31, 2010 and 2009, respectively. SNC loans are held to the same credit
underwriting standards as the remainder of the loan portfolio and face similar credit challenges, primarily driven
by residential real estate development.

MARKET AND LIQUIDITY RISK

Market risk represents the risk of loss due to adverse movements in market rates or prices, including
interest rates, foreign exchange rates, and commodity and equity prices. Liquidity risk represents the failure to
meet financial obligations coming due resulting from an inability to liquidate assets or obtain adequate funding,
and the inability to easily unwind or offset specific exposures without significant changes in pricing, due to
inadequate market depth or market disruptions.

The Asset and Liability Policy Committee establishes and monitors compliance with the policies and risk
limits pertaining to market and liquidity risk management activities. The Asset and Liability Policy Committee
meets regularly to discuss and review market and liquidity risk management strategies and consists of executive
and senior management from various areas of the Corporation, including finance, economics, lending, deposit
gathering and risk management.

The Corporation’s Treasury Department supports the Asset and Liability Policy Committee in measuring,
monitoring and managing interest rate, liquidity and coordination of all other market risks. The area’s key
activities encompass: (i) providing information and analysis of the Corporation’s balance sheet structure and
measurement of interest rate,
liquidity and all other market risks; (ii) monitoring and reporting of the
Corporation’s positions relative to established policy limits and guidelines; (iii) development and presentation of
analysis and strategies to adjust risk positions; (iv) review and presentation of policies and authorizations for
approval; (v) monitoring of industry trends and analytical tools to be used in the management of interest rate,
liquidity and all other market risks; (vi) developing and monitoring the interest rate risk economic capital
estimate; and (vii) monitoring of capital adequacy in accordance with the Capital Management Policy.

Interest Rate Risk

Net interest income is the predominant source of revenue for the Corporation. Interest rate risk arises
primarily through the Corporation’s core business activities of extending loans and accepting deposits. The
Corporation’s balance sheet is predominantly characterized by floating-rate loans funded by a combination of
core deposits and wholesale borrowings. Approximately 80 percent of the Corporation’s loans were floating-rate
loans in 2010, of which approximately 70 percent were based on LIBOR and 30 percent were based on prime.
This creates a natural imbalance between the floating-rate loan portfolio and the more slowly repricing deposit
products. The result is that growth and/or contraction in the Corporation’s core businesses will lead to sensitivity
to interest rate movements without mitigating actions. Examples of such actions are purchasing investment
securities, primarily fixed-rate, which provide liquidity to the balance sheet and act to mitigate the inherent
interest sensitivity, and hedging the sensitivity with interest rate swaps. The Corporation actively manages its
exposure to interest rate risk, with the principal objective of optimizing net interest income and the economic
value of equity while operating within acceptable limits established for interest rate risk and maintaining
adequate levels of funding and liquidity.

Interest Rate Sensitivity

Interest rate risk arises in the normal course of business due to differences in the repricing and cash flow
characteristics of assets and liabilities. Since no single measurement system satisfies all management objectives,
a combination of techniques is used to manage interest rate risk. These techniques examine earnings at risk and
the economic value of equity utilizing multiple simulation analyses.

The Corporation frequently evaluates net interest income under various balance sheet and interest rate
scenarios, looking at both 12 month and 24 month time horizons, using simulation modeling analysis as its

52

principal risk management evaluation technique. The results of these analyses provide the information needed to
assess the balance sheet structure. Changes in economic activity, whether domestic or international, different
from those management included in its simulation analyses could translate into a materially different interest rate
environment than currently expected. Management evaluates a base case net interest income under an unchanged
interest rate environment and what is believed to be the most likely balance sheet structure. This base case net
interest income is then evaluated against non-parallel interest rate scenarios that increase and decrease 200 basis
points in a linear fashion from the base case over twelve months, resulting in a 100 basis point average change in
interest rates over the period. Due to the current low level of interest rates, the analysis reflects a declining
interest rate scenario of a 25 basis point drop, to zero percent. In addition, adjustments consistent with each
interest rate scenario are made to asset prepayment levels, yield curves, and overall balance sheet mix and growth
assumptions. These assumptions are inherently uncertain and, as a result, the model may not precisely predict the
impact of higher or lower interest rates on net interest income. Actual results may differ from simulated results
due to timing, magnitude and frequency of changes in interest rates, market conditions and management
strategies, among other factors. However, the model can indicate the likely direction of change. Existing
derivative instruments entered into for risk management purposes are included in these analyses, but no
additional hedging is forecasted.

The table below, as of December 31, 2010 and 2009, displays the estimated impact on net interest income
during the next 12 months by relating the base case scenario results to those from the rising and declining rate
scenarios described above.

Sensitivity of Net Interest Income to Changes in Interest Rates
(in millions)
December 31

Change in Interest Rates:
+200 basis points
-25 basis points (to zero percent)

2010

2009

Amount

%

Amount

%

$ 104
(15)

7
(1)

$

74
(13)

4
(1)

Corporate policy limits adverse change to no more than four percent of management’s most likely net
interest income forecast, and the Corporation was within this policy guideline at December 31, 2010. The
sensitivity from December 31, 2009 to December 31, 2010 increased primarily due to growth in core deposits,
though risk to declining interest rates is limited by the current low level of rates. Interest rate risk is actively
managed principally through the use of either on-balance sheet financial instruments or interest rate swaps to
achieve the desired risk profile.

In addition to the simulation analysis, an economic value of equity analysis is performed for a longer term
view of the interest rate risk position. The economic value of equity analysis begins with an estimate of the
economic value of the financial assets and liabilities on the Corporation’s balance sheet, derived through
discounting cash flows based on actual rates at the end of the period, and then applies the estimated impact of
rate movements to the economic value of assets, liabilities and off-balance sheet instruments. The economic
value of equity is then calculated as the difference between the estimated market value of assets and liabilities net
of the impact of off-balance sheet instruments. As with net interest income shocks, a variety of alternative
scenarios are performed to measure the impact on economic value of equity, including changes in the level, slope
and shape of the yield curve.

53

The table below, as of December 31, 2010 and 2009, displays the estimated impact on the economic value
of equity from a 200 basis point immediate parallel increase or decrease in interest rates. Similar to the
simulation analysis above, due to the current low level of interest rates, the economic value of equity analyses
below reflect an interest rate scenario of an immediate 25 basis point drop, to zero percent, while the rising
interest rate scenario reflects an immediate 200 basis point rise.

Sensitivity of Economic Value of Equity to Changes in Interest Rates
(in millions)
December 31

Change in Interest Rates:
+200 basis points
-25 basis points (to zero percent)

2010

2009

Amount % Amount %

$ 435
(100)

5
(1)

$ 329
(91)

3
(1)

Corporate policy limits adverse change in the estimated market value change in the economic value of
equity to 15 percent of the base economic value of equity. The Corporation was within this policy parameter at
December 31, 2010. The change in the sensitivity of the economic value of equity to a 200 basis point parallel
increase in rates between December 31, 2009 and December 31, 2010 was primarily driven by core deposit
growth and lower shareholders’ equity levels due to the redemption of preferred stock.

LOAN MATURITIES AND INTEREST RATE SENSITIVITY

Loans Maturing

After One
But Within
Five Years

After
Five Years

(in millions)
December 31, 2010

Commercial loans
Real estate construction loans
Commercial mortgage loans
International loans

Total

Sensitivity of loans to changes in interest rates:
Predetermined (fixed) interest rates
Floating interest rates

Total

Within One
Year (a)

$ 17,477
1,610
4,779
1,035

$ 24,901

$

$

$

$

4,299
591
4,143
93

9,126

3,563
5,563

9,126

$

369
52
845
4

$

Total

22,145
2,253
9,767
1,132

$ 1,270

$

35,297

$

823
447

$ 1,270

(a) Includes demand loans, loans having no stated repayment schedule or maturity and overdrafts.

The Corporation uses investment securities and derivative instruments, predominantly interest rate swaps,
as asset and liability management tools with the overall objective of managing the volatility of net interest
income from changes in interest rates. Swaps modify the interest rate characteristics of certain assets and
liabilities (e.g., from a floating rate to a fixed rate, from a fixed rate to a floating rate or from one floating-rate
index to another). These tools assist management in achieving the desired interest rate risk management
objectives.

54

Risk Management Derivative Instruments

(in millions)
Risk Management Notional Activity

Balance at January 1, 2009
Additions
Maturities/amortizations

Balance at December 31, 2009
Maturities/amortizations

Balance at December 31, 2010

Interest
Rate
Contracts

$

$

$

3,400
429
(529)

3,300
(900)

2,400

Foreign
Exchange
Contracts

$

$

$

544
3,148
(3,439)

253
(2,233)

220

Totals

$

$

$

3,944
3,577
(3,968)

3,553
(3,133)

2,620

The notional amount of risk management interest rate swaps totaled $2.4 billion at December 31, 2010,
including $1.6 billion under fair value hedging strategies and $800 million under cash flow hedging strategies,
and $3.3 billion at December 31, 2009, including $1.7 billion under cash flow hedging strategies and $1.6 billion
under fair value hedging strategies. The fair value of risk management interest rate swaps was a net unrealized
gain of $266 million at December 31, 2010, compared to a net unrealized gain of $224 million at December 31,
2009.

For the year ended December 31, 2010, risk management interest rate swaps generated $105 million of
net interest income, compared to $95 million of net interest income for the year ended December 31, 2009. The
increase in swap income for 2010, compared to 2009, was primarily due to a decline in floating pay rates,
partially offset by maturities of interest rate swaps that carried positive spreads.

In addition to interest rate swaps, the Corporation employs various other types of derivative instruments
as offsetting positions to mitigate exposures to interest rate and foreign currency risks associated with specific
assets and liabilities (e.g., customer loans or deposits denominated in foreign currencies). Such instruments may
include interest rate caps and floors, total return swaps, foreign exchange forward contracts and foreign exchange
swap agreements. The aggregate notional amounts of these risk management derivative instruments at
December 31, 2010 and 2009 were $220 million and $253 million, respectively.

Further information regarding risk management derivative instruments is provided in Note 9 to the

consolidated financial statements.

Customer-Initiated and Other Derivative Instruments

(in millions)
Customer-Inititated and Other Notional Activity

Balance at January 1, 2009
Additions
Maturities/amortizations
Terminations

Balance at December 31, 2009
Additions
Maturities/amortizations
Terminations

Balance at December 31, 2010

Interest
Rate
Contracts

Energy
Derivative
Contracts

Foreign
Exchange
Contracts

$ 12,342
2,527
(2,190)
(583)

$ 12,096
2,039
(3,380)
(235)

$ 2,145
1,734
(1,519)
(23)

$ 2,337
1,823
(1,537)
-

$ 2,723
97,715
(98,360)
(55)

$ 2,023
85,221
(84,741)
(6)

Totals

$ 17,210
101,976
(102,069)
(661)

$ 16,456
89,083
(89,658)
(241)

$ 10,520

$ 2,623

$ 2,497

$ 15,640

55

The Corporation writes and purchases interest rate caps and floors and enters into foreign exchange
contracts, interest rate swaps and energy derivative contracts to accommodate the needs of customers requesting
such services. Customer-initiated and other notional activity represented 86 percent of total interest rate, energy
and foreign exchange contracts at December 31, 2010, compared to 82 percent at December 31, 2009.

Further information regarding customer-initiated and other derivative instruments in provided in Note 9

to the consolidated financial statements.

Liquidity Risk and Off-Balance Sheet Arrangements

Liquidity is the ability to meet financial obligations through the maturity or sale of existing assets or the
acquisition of additional funds. Various financial obligations, including contractual obligations and commercial
commitments, may require future cash payments by the Corporation. The following contractual obligations table
summarizes the Corporation’s noncancelable contractual obligations and future required minimum payments.
Refer to Notes 7, 11, 12, 13, and 19 to the consolidated financial statements for further information regarding
these contractual obligations.

Contractual Obligations
(in millions)

December 31, 2010
Deposits without a stated maturity (a)
Certificates of deposit and other deposits with

Minimum Payments Due by Period
1-3
Years

Less than
1 Year

3-5
Years

Total

$

34,557 $

34,557 $

- $

More than
5 Years
-

- $

a stated maturity (a)
Short-term borrowings (a)
Medium- and long-term debt (a)
Operating leases
Commitments to fund low income housing partnerships
Other long-term obligations (b)
Total contractual obligations

$
Medium- and long-term debt (a) (parent company only) $
(a) Deposits and borrowings exclude accrued interest.
(b) Includes unrecognized tax benefits.

5,914
130
5,861
537
71
252
47,322 $
300 $

4,985
130
1,365
67
46
36
41,186 $
- $

795
-
1,168
121
22
55
2,161 $
- $

94
-
1,862
100
2
31
2,089 $
300 $

40
-
1,466
249
1
130
1,886
-

In addition to contractual obligations, other commercial commitments of the Corporation impact liquidity.
These include commitments to purchase and sell earning assets, commitments to fund indirect private equity and
venture capital investments, unused commitments to extend credit, standby letters of credit and financial
guarantees, and commercial letters of credit. The following commercial commitments table summarizes the
Corporation’s commercial commitments and expected expiration dates by period.

Commercial Commitments
(in millions)

December 31, 2010
Commitments to purchase investment securities
Commitments to sell investment securities
Commitments to fund indirect private equity

and venture capital investments
Unused commitments to extend credit
Standby letters of credit and financial

guarantees

Commercial letters of credit

Total commercial commitments

$

$

Expected Expiration Dates by Period
1-3
Years

Less than
1 Year

3-5
Years

Total

$

3
1

$

3
1

$

-
-

-
-

More than
5 Years
-
-

$

2
9,779

3,527
90
13,402

4
10,572

1,578
3
12,157

2
3,168

315
-
3,485

13
1,627

34
-
$ 1,674

$

$

$

21
25,146

5,454
93
30,718

56

Since many of these commitments expire without being drawn upon,

the total amount of these
commercial commitments does not necessarily represent the future cash requirements of the Corporation. Refer
to the “Other Market Risks” section below and Note 9 to the consolidated financial statements for a further
discussion of these commercial commitments.

Wholesale Funding

The Corporation satisfies liquidity requirements with either liquid assets or various funding sources.
Liquid assets, which totaled $7.8 billion at December 31, 2010, compared to $7.7 billion at December 31, 2009,
provide a reservoir of liquidity. Liquid assets include cash and due from banks, federal funds sold and securities
purchased under agreements to resell, interest-bearing deposits with banks, other short-term investments and
unencumbered investment securities available-for-sale. At December 31, 2010, the Corporation held excess
liquidity, represented by $1.3 billion deposited with the FRB, compared to $4.8 billion at December 31, 2009.
Sluggish loan demand and deposit growth continued to generate excess liquidity in 2010. The Corporation
utilized this excess liquidity to redeem $2.0 billion of FHLB advances originally scheduled to mature in 2012 and
2013 in the third quarter 2010 and $500 million of trust preferred securities in the fourth quarter 2010, and to
fund an additional $2.8 billion of 2010 debt maturities. In addition, a portion of the excess liquidity was used in
the first quarter 2010 to early redeem $2.25 billion of preferred stock originally issued in 2008 in connection with
the Capital Purchase Program, also funded by the proceeds from an $880 million common stock offering
completed in the first quarter 2010.

The Corporation may access the purchased funds market when necessary, which includes certificates of
deposit issued to institutional investors in denominations in excess of $100,000 and to retail customers in
denominations of less than $100,000 through brokers (“other time deposits” on the consolidated balance sheets),
foreign office time deposits and short-term borrowings. Purchased funds totaled $562 million at December 31,
2010, compared to $2.1 billion and $9.5 billion at December 31, 2009 and 2008, respectively. Capacity for
incremental purchased funds at December 31, 2010, consisted largely of federal funds purchased, brokered
certificates of deposits and securities sold under agreements to repurchase. In addition, the Corporation is a
member of the FHLB of Dallas, Texas, which provides short- and long-term funding to its members through
advances collateralized by real estate-related assets. The actual borrowing capacity is contingent on the amount
of collateral available to be pledged to the FHLB. As of December 31, 2010, the Corporation had $2.5 billion of
outstanding borrowings from the FHLB with remaining maturities ranging from June 2011 to May 2014. The
Corporation also maintains a shelf registration statement with the Securities and Exchange Commission from
which it may issue debt and/or equity securities. In addition, at December 31, 2010, the Bank had the ability to
issue up to $13.6 billion of debt under an existing $15 billion medium-term senior note program which allows the
issuance of debt with maturities between one and 30 years.

For further information regarding the redemption of trust preferred securities, refer to the “Capital”

section of this financial review and Note 13 to the consolidated financial statements.

The ability of the Corporation and the Bank to raise funds at competitive rates is impacted by rating
agencies’ views of the credit quality, liquidity, capital and earnings of the Corporation and the Bank. As of
December 31, 2010, the four major rating agencies had assigned the following ratings to long-term senior
unsecured obligations of the Corporation and the Bank. A security rating is not a recommendation to buy, sell, or
hold securities and may be subject to revision or withdrawal at any time by the assigning rating agency. Each
rating should be evaluated independently of any other rating.

December 31, 2010

Standard and Poor’s
Moody’s Investors Service
Fitch Ratings
Dominion Bond Rating Service

Comerica Incorporated Comerica Bank

A-
A2
A
A

A
A1
A
A (High)

57

The parent company held $327 million of short-term investments with its principal banking subsidiary at
December 31, 2010. A primary source of liquidity for the parent company is dividends from its subsidiaries. As
discussed in Note 21 to the consolidated financial statements, banking subsidiaries are subject to regulation and
may be limited in their ability to pay dividends or transfer funds to the parent company. During 2011, the
banking subsidiaries can pay dividends up to approximately $364 million plus 2011 net profits without prior
regulatory approval. One measure of current parent company liquidity is investment in subsidiaries as a
percentage of shareholders’ equity. A ratio over 100 percent represents the reliance on subsidiary dividends to
repay liabilities. As of December 31, 2010, the ratio was 103 percent. Refer to the “Contractual Obligations”
table in this financial review for information on parent company future minimum payments on medium- and
long-term debt.

The Corporation regularly evaluates its ability to meet funding needs in unanticipated, stressed
environments. In conjunction with the quarterly 200 basis point interest rate shock analyses, discussed in the
“Interest Rate Sensitivity” section of this financial review, liquidity ratios and potential funding availability are
examined. Each quarter, the Corporation also evaluates its ability to meet liquidity needs under a series of broad
events, distinguished in terms of duration and severity. The evaluation as of December 31, 2010 projected that
sufficient sources of liquidity were available under each series of events.

Variable Interest Entities

The Corporation holds a significant interest in certain unconsolidated variable interest entities (VIEs).
These unconsolidated VIEs are principally low income housing limited partnerships. The Corporation defines a
significant interest in a VIE as a subordinated interest that exposes the Corporation to a significant portion of the
VIEs expected losses or residual returns. In general, a VIE is an entity that either (1) has an insufficient amount
of equity to carry out its principal activities without additional subordinated financial support, (2) has a group of
equity owners that are unable to make significant decisions about its activities, or (3) has a group of equity
owners that do not have the obligation to absorb losses or the right to receive returns generated by its operations.
If any of these characteristics is present, the entity is subject to a variable interests consolidation model, and
consolidation is based on variable interests, not on ownership of the entity’s outstanding voting stock. Variable
interests are defined as contractual, ownership, or other monetary interests in an entity that change with
fluctuations in the entity’s net asset value. A company must consolidate an entity depending on whether the
entity is a voting rights entity or a VIE. Refer to the “Principles of Consolidation” section in Note 1 to the
consolidated financial statements for a summary of the Corporation’s consolidation policy. Also, refer to Note 10
to the consolidated financial statements for a discussion of the Corporation’s involvement in VIEs, including
those in which the Corporation holds a significant interest but for which it is not the primary beneficiary.

Other Market Risks

Market risk related to the Corporation’s trading instruments is not significant, as trading activities are
limited. Certain components of the Corporation’s noninterest income, primarily fiduciary income, are at risk to
fluctuations in the market values of underlying assets, particularly equity and debt securities. Other components
of noninterest income, primarily brokerage fees, are at risk to changes in the volume of market activity.

Share-based compensation expense recognized by the Corporation is dependent upon the fair value of
stock options and restricted stock at the date of grant. The fair value of both stock options and restricted stock is
impacted by the market price of the Corporation’s stock on the date of grant and is at risk to changes in equity
markets, general economic conditions and other factors. For further information regarding the valuation of stock
options and restricted stock, refer to the “Critical Accounting Policies” section of this financial review.

Nonmarketable Equity Securities

At December 31, 2010, the Corporation had a $47 million portfolio of investments in indirect private
equity and venture capital funds, with commitments of $21 million to fund additional investments in future
periods. The value of these investments is at risk to changes in equity markets, general economic conditions and
a variety of other factors. The majority of these investments are not readily marketable and are included in

58

“accrued income and other assets” on the consolidated balance sheets. The investments are individually reviewed
for impairment on a quarterly basis by comparing the carrying value to the estimated fair value. For further
information regarding the valuation of nonmarketable equity securities, refer to the “Critical Accounting
Policies” section of this financial review. Income from indirect private equity and venture capital funds in 2010
was $7 million, which was more than offset by $7 million of write-downs and expenses recognized on such
investments in 2010. The following table provides information on the Corporation’s indirect private equity and
venture capital funds investment portfolio.

(dollar amounts in millions)

Number of investments
Balance of investments
Largest single investment
Commitments to fund additional investments

OPERATIONAL RISK

December 31, 2010

$

131
47
6
21

Operational risk represents the risk of loss resulting from inadequate or failed internal processes, people
and systems, or from external events. The definition includes legal risk, which is the risk of loss resulting from
failure to comply with laws and regulations as well as prudent ethical standards and contractual obligations. It
also includes the exposure to litigation from all aspects of an institution’s activities. The definition does not
include strategic or reputational risks. Although operational losses are experienced by all companies and are
routinely incurred in business operations, the Corporation recognizes the need to identify and control operational
losses and seeks to limit losses to a level deemed appropriate by management after considering the nature of the
Corporation’s business and the environment in which it operates. Operational risk is mitigated through a system
of internal controls that are designed to keep operating risks at appropriate levels. The Operational Risk
Management Committee monitors risk management techniques and systems. The Corporation has developed a
framework that includes a centralized operational risk management function and business/support unit risk
coordinators responsible for managing operational risk specific to the respective business lines.

In addition, internal audit and financial staff monitor and assess the overall effectiveness of the system of
internal controls on an ongoing basis. Internal Audit reports the results of reviews on the controls and systems to
management and the Audit Committee of the Board. The internal audit staff independently supports the Audit
Committee oversight process. The Audit Committee serves as an independent extension of the Board.

COMPLIANCE RISK

Compliance risk represents the risk of regulatory sanctions, reputational impact or financial loss resulting
from the Corporation’s failure to comply with regulations and standards of good banking practice. Activities
which may expose the Corporation to compliance risk include, but are not limited to, those dealing with the
prevention of money laundering, privacy and data protection, community reinvestment initiatives, fair lending
challenges resulting from the Corporation’s expansion of its banking center network and employment and tax
matters.

The Enterprise-Wide Compliance Committee, comprised of senior business unit managers, as well as
managers responsible for compliance, audit and overall risk, oversees compliance risk. This enterprise-wide
approach provides a consistent view of compliance across the organization. The Enterprise-Wide Compliance
Committee also ensures that appropriate actions are implemented in business units to mitigate risk to an
acceptable level.

BUSINESS RISK

Business risk represents the risk of loss due to impairment of reputation, failure to fully develop and
execute business plans, failure to assess current and new opportunities in business, markets and products, and any
other event not identified in the defined risk categories of credit, market, operational or compliance risks.

59

Mitigation of the various risk elements that represent business risk is achieved through initiatives to help the
Corporation better understand and report on the various risks. Wherever quantifiable, the Corporation uses
situational analysis and other testing techniques to appreciate the scope and extent of these risks.

THE DODD-FRANK WALL STREET REFORM AND CONSUMER PROTECTION ACT

On July 21, 2010, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Financial
Reform Act”) was signed into law. The Financial Reform Act provides for, among other matters, increased
regulatory supervision and examination of financial
the imposition of more stringent capital
requirements on financial institutions and increased regulation of derivatives and hedging transactions. Provided
below is an overview of key elements of the Financial Reform Act relevant to the Corporation. Most of the
provisions contained in the Financial Reform Act will be effective immediately upon enactment; however, many
have delayed effective dates. Implementation of the Financial Reform Act will require many new mandatory and
discretionary rules to be made by federal regulatory agencies over the next several years. The estimates of the
impact on the Corporation discussed below are based on the limited information currently available and, given
the uncertainty of the timing and scope of the impact, are subject to change until final rulemaking is complete.

institutions,

•

Interest on Demand Deposits: Allows interest on commercial demand deposits, which could lead to increased
cost of commercial demand deposits, depending on the interplay of interest, deposit credits and service
charges.

• Unlimited Deposit Insurance Extension: Provides unlimited deposit

insurance on noninterest-bearing
accounts from December 31, 2010 to December 31, 2012. There will not be a separate assessment for
unlimited deposit insurance coverage for this period.

• Deposit Insurance: Changes the definition of assessment base from domestic deposits to net assets (average
consolidated total assets less average tangible equity), increases the deposit insurance fund’s minimum
reserve ratio and permanently increases general deposit insurance coverage from $100,000 to $250,000. The
Corporation expects 2011 FDIC insurance expense to remain consistent with the 2010 expense.

• Derivatives: Allows continued trading of foreign exchange and interest rate derivatives. Requires banks to
shift energy, uncleared commodities and agriculture derivatives to a separately capitalized subsidiary within
their holding company. Directly impacts client-driven energy derivatives business (approximately $1 million
in annual revenue, based on full-year 2010 estimates).

•

•

Interchange Fee: Limits debit card transaction processing fees that card issuers can charge to merchants.
Based on the options currently contemplated in the draft, estimated annual revenue from debit card PIN and
signature-based interchange fees in 2011 is expected to decrease by approximately $13 million to $15
million.

Trust Preferred Securities: Prohibits holding companies with more than $15 billion in assets from including
trust preferred securities as Tier 1 capital, and allows for a phase-in period of three years, beginning on
January 1, 2013. As of December 31, 2010, the Corporation had no outstanding trust preferred securities.

CRITICAL ACCOUNTING POLICIES

The Corporation’s consolidated financial statements are prepared based on the application of accounting
policies, the most significant of which are described in Note 1 to the consolidated financial statements. These
policies require numerous estimates and strategic or economic assumptions, which may prove inaccurate or
subject to variations. Changes in underlying factors, assumptions or estimates could have a material impact on
the Corporation’s future financial condition and results of operations. The most critical of these significant
accounting policies are the policies related to allowance for credit losses, valuation methodologies, goodwill,
pension plan accounting and income taxes. These policies are reviewed with the Audit Committee of the Board
and are discussed more fully below.

60

ALLOWANCE FOR CREDIT LOSSES

The allowance for credit losses, which includes both the allowance for loan losses and the allowance for
credit losses on lending-related commitments, is calculated with the objective of maintaining a reserve sufficient
to absorb estimated probable losses. Management’s determination of the adequacy of the allowance is based on
lending-related commitments, and other relevant factors. This
periodic evaluations of the loan portfolio,
evaluation is inherently subjective as it requires an estimate of the loss content for each risk rating and for each
individually evaluated impaired loan, an estimate of the amounts and timing of expected future cash flows, an
estimate of the value of collateral, including the fair value of assets with few transactions (e.g., residential real
estate developments and nonmarketable securities), many of which may be stressed, and an estimate of the
probability of draw on unused commitments.

Allowance for Loan Losses

Loans for which it is probable that payment of interest and principal will not be made in accordance with
the contractual terms of the loan agreement are considered impaired. For business and certain retail loans
identified based on the combination of internally assigned ratings and a defined dollar threshold set periodically,
the Corporation performs a detailed credit quality review quarterly and establishes a specific allowance for such
loans, estimated using one of several methods, including the estimated fair value of underlying collateral,
observable market value of similar debt or discounted expected future cash flows. The valuation is reviewed and
updated on a quarterly basis. While the determination of specific allowances may involve estimates, each
estimate is unique to the individual loan, and none is individually significant.

Independent third-party appraisals are obtained prior to the origination of any first mortgage loan. “As
developed” collateral values are used at the time of origination of a construction loan, on the assumption that the
construction facility provides sufficient funds to complete the project and carry it until it is leased or sold. Credit
reviews are performed at least annually on each collateral-dependent loan and, if necessary, adjustments to the
original appraisals are made to reflect the most current risk profile of the project. These adjustments may include
a revised rental rate or absorption rate, based on the actual conditions at that time. Updated independent third-
party appraisals are generally obtained at the time of a refinance or restructure where additional advances are
requested or when there is evidence that the physical aspects of the property have deteriorated.

For collateral-dependent

impaired loans, updated appraisals are obtained at

least annually unless
conditions dictate the need for increased frequency. When the collateral exists in a less active market,
management generally adjusts the appraised value to consider the current market conditions, such as estimated
length of time to sell. Appraisals on impaired construction loans are generally based on “as is” collateral values.
In certain circumstances, the Corporation may believe that the highest and best use of the collateral, and therefore
the most advantageous exit strategy, requires completion of the construction project. In these situations, the
Corporation uses an “as-developed” appraisal to evaluate alternatives. However, the “as-developed” collateral
value is appropriately adjusted to reflect the cost to complete the construction project and to prepare the property
for sale. Between appraisals, the Corporation may reduce the collateral value based upon the age of the appraisal
and adverse developments in market conditions.

The allowance for loan losses provides for probable, estimable losses inherent in the Corporation’s loan
portfolio. The allowance for loan losses includes specific allowances, based on individual evaluations of certain
loans and loan relationships, and allowances for homogenous pools of loans with similar risk characteristics.
Loans which do not meet the criteria to be evaluated individually are evaluated in pools of loans with similar risk
characteristics. The allowance for business loans not individually evaluated is determined by applying standard
reserve factors to the pool of business loans within each internal risk rating. Internal risk ratings are assigned to
each business loan at the time of approval and are subjected to subsequent periodic reviews by the Corporation’s
senior management. The Corporation defines business loans as those belonging to the commercial, real estate
construction, commercial mortgage, lease financing and international loan portfolios. Standard reserve factors for
the loans within each risk rating are updated quarterly and are based on estimated probabilities of default and loss
given default, incorporating factors such as recent charge-off experience, current economic conditions and trends,

61

changes in collateral values of properties securing loans, and trends with respect to past due and nonaccrual
amounts. The standard reserve factors are supported by underlying analysis, including information on migration
and loss given default studies from each of the three largest domestic geographic markets (Midwest, Western and
Texas). Incremental reserves may be established to cover losses in industries and/or portfolios experiencing
elevated loss levels. On a limited basis, where the Corporation lacks sufficient default experience to develop its
own probability of default metrics, the Corporation utilizes bond tables published by Standard & Poor’s (S&P).
On an annual basis, the Corporation maps a sample of the publicly rated credits in its portfolio that are assigned
the best internal risk ratings to the S&P bond tables to establish probability of default for these risk ratings. The
Corporation has sufficient default experience and is able to generate its own probability of default metrics on the
remainder of the loan portfolio. The Corporation uses its own loss given default experience to determine the
overall expected loss measure.

The allowance for retail loans not individually evaluated is determined by applying estimated loss ratios
to various pools of loans within the portfolios with similar risk characteristics. Estimated loss rates for all pools
are updated quarterly, incorporating factors such as recent charge-off experience, current economic conditions
and trends, changes in collateral values of properties securing loans (using index-based estimates), and trends
with respect to past due and nonaccrual amounts.

Actual losses experienced in the future may vary from those estimated. The uncertainty occurs because
factors may exist which affect the determination of probable losses inherent in the loan portfolio and are not
necessarily captured by the application of standard reserve factors or identified industry-specific risks. An
additional allowance is established to capture these probable losses and reflects management’s view that the
allowance should recognize the margin for error inherent in the process of estimating expected loan losses. The
Corporation periodically reviews its methodology to ensure factors considered in the determination of probable
losses inherent in the loan portfolio are appropriate. Factors that were considered in the evaluation of the
adequacy of the Corporation’s allowance for loan losses included the inherent imprecision in the risk rating
system resulting from inaccuracy in assigning risk ratings or stale ratings which may not have been updated for
recent trends in particular credits. Risk ratings on business loan relationships meeting an internally specified
exposure threshold are updated annually or more frequently upon the occurrence of a circumstance that affects
the credit risk of the relationship.

The principal assumption used in deriving the allowance for loan losses is the estimate of loss content for
each risk rating. Since a loss ratio is applied to a large portfolio of loans, any variation between actual and
assumed results could be significant. To illustrate, if recent loss experience dictated that the estimated loss ratios
would be changed by five percent (of the estimate) across all risk ratings, the allowance for loan losses as of
December 31, 2010 would change by approximately $15 million.

Allowance for Credit Losses on Lending-Related Commitments

The allowance for credit losses on lending-related commitments includes specific allowances, based on
individual evaluations of certain letters of credit in a manner consistent with business loans, and allowances
based on the pool of the remaining letters of credit and all unused commitments to extend credit within each
internal risk rating. A probability of draw estimate is applied to the commitment amount, and the result is
multiplied by standard reserve factors consistent with business loans. In general, the probability of draw for
letters of credit is considered certain for all letters of credit supporting loans and for letters of credit assigned an
internal risk rating generally consistent with regulatory defined substandard or doubtful. Other letters of credit
and all unfunded commitments have a lower probability of draw.

For further discussion of the methodology used in the determination of the allowance for credit losses,
refer to the “Allowance for Credit Losses” section in this financial review and Note 1 to the consolidated
financial statements. To the extent actual outcomes differ from management estimates, additional provision for
credit losses may be required that would adversely impact earnings in future periods. A substantial majority of
the allowance is assigned to business segments. Any earnings impact resulting from actual outcomes differing
from management estimates would primarily affect the Business Bank segment.

62

VALUATION METHODOLOGIES

Fair Value Measurement of Level 3 Financial Instruments

Fair value measurement applies whenever accounting guidance requires or permits assets or liabilities to
be measured at fair value. Fair value is an estimate of the exchange price that would be received to sell an asset
or paid to transfer a liability in an orderly transaction (i.e., not a forced transaction, such as a liquidation or
distressed sale) between market participants at the measurement date and is based on the assumptions market
participants would use when pricing an asset or liability. However, the calculated fair value estimates in many
instances cannot be substantiated by comparison to independent markets and in many cases may not be relatable
in a current sale of the financial instrument.

Fair value measurement and disclosure guidance establishes a three-level hierarchy for disclosure of
assets and liabilities recorded at fair value. The classification of assets and liabilities within the hierarchy is based
on the markets in which the assets and liabilities are traded and whether the inputs used for measurement are
observable or unobservable. Observable inputs reflect market-derived or market-based information obtained from
independent sources, while unobservable inputs reflect management’s estimates about market data. Level 1
valuations are based on quoted prices for identical instruments traded in active markets. Level 2 valuations are
based on quoted prices for similar instruments in active markets, quoted prices for identical or similar
instruments in markets that are not active, and model-based valuation techniques for which all significant
assumptions are observable in the market. Level 3 valuations are generated from model-based techniques that use
at least one significant assumption not observable in the market. These unobservable assumptions reflect
estimates of assumptions market participants would use in pricing the asset or liability. Valuation techniques
include the use of option pricing models, discounted cash flow models and similar techniques.

Fair value measurement and disclosure guidance differentiates between those assets and liabilities
required to be carried at fair value at every reporting period (“recurring”) and those assets and liabilities that are
only required to be adjusted to fair value under certain circumstances (“nonrecurring”). Level 3 financial
instruments recorded at fair value on a recurring basis included primarily auction-rate securities at December 31,
2010. Additionally, from time to time, the Corporation may be required to record at fair value other financial
assets or liabilities on a nonrecurring basis. Note 3 to the consolidated financial statements includes information
about the extent to which fair value is used to measure assets and liabilities and the valuation methodologies and
key inputs used.

For assets and liabilities recorded at fair value, the Corporation’s policy is to maximize the use of
observable inputs and minimize the use of unobservable inputs when developing fair value measurements for
those items where there is an active market. In certain cases, when market observable inputs for model-based
valuation techniques may not be readily available, the Corporation is required to make judgments about
assumptions market participants would use in estimating the fair value of the financial instrument. The models
used to determine fair value adjustments are periodically evaluated by management for relevance under current
facts and circumstances.

Changes in market conditions may reduce the availability of quoted prices or observable data. For
example, reduced liquidity in the capital markets or changes in secondary market activities could result in
observable market inputs becoming unavailable. Therefore, when market data is not available, the Corporation
would use valuation techniques requiring more management judgment to estimate the appropriate fair value.

At December 31, 2010, Level 3 financial assets recorded at fair value on a recurring basis totaled $619
million, or one percent of total assets, and consisted primarily of auction-rate securities. At December 31, 2010,
there were $1 million, or less than one percent of total liabilities, of Level 3 financial liabilities recorded at fair
value on a recurring basis.

63

At December 31, 2010, Level 3 financial assets recorded at fair value on a nonrecurring basis totaled
$901 million, or two percent of total assets, and consisted primarily of impaired loans and foreclosed property. At
December 31, 2010, there were no financial liabilities recorded at fair value on a nonrecurring basis.

See Note 3 to the consolidated financial statements for a complete discussion on the Corporation’s use of

fair value and the related measurement techniques.

Share-based Compensation

The fair value of share-based compensation as of the date of grant is recognized as compensation expense
on a straight-line basis over the vesting period, taking into consideration the effect of retirement-eligible status on
the vesting period. In 2010, the Corporation recognized total share-based compensation expense of $32 million.
The option valuation model requires several inputs, including the risk-free interest rate, the expected dividend
yield, expected volatility factors of the market price of the Corporation’s common stock and the expected option
life. For further discussion on the valuation model inputs, see Note 17 to the consolidated financial statements.
Changes in input assumptions can materially affect the fair value estimates. The option valuation model is
sensitive to the market price of the Corporation’s stock at the grant date, which affects the fair value estimates
and, therefore, the amount of expense recorded on future grants. Using the number of stock options granted in
2010 and the Corporation’s stock price at December 31, 2010, a $5.00 per share increase in stock price would
result in an increase in pretax expense of approximately $3 million, from the assumed base, over the options’
vesting periods. The fair value of restricted stock is based on the market price of the Corporation’s stock at the
grant date. Using the number of restricted stock awards issued in 2010, a $5.00 per share increase in stock price
would result in an increase in pretax expense of approximately $1 million, from the assumed base, over the
awards’ vesting periods. Refer to Notes 1 and 17 to the consolidated financial statements for further discussion of
share-based compensation expense.

Nonmarketable Equity Securities

At December 31, 2010, the Corporation had a $47 million portfolio of investments in indirect private
equity and venture capital investments, with commitments of $21 million to fund additional investments in future
periods. The majority of these investments are not readily marketable. The investments are individually reviewed
for impairment, on a quarterly basis, by comparing the carrying value to the estimated fair value. Fair value
measurement guidance permits the measurement of investments of this type on the basis of net asset value per
share, provided the net asset value is calculated by the fund in compliance with fair value measurement guidance
applicable to investment companies. The Corporation bases its estimates of fair value for the majority of its
indirect private equity and venture capital investments on its percentage ownership in the net asset value of the
entire fund, as reported by the fund, after indication that the fund adheres to applicable fair value measurement
guidance. For those funds where net asset value is not reported by the fund, the Corporation derives the fair value
of the fund by estimating the fair value of each underlying investment in the fund. In addition to using qualitative
information about each underlying investment, as provided by the fund, the Corporation gives consideration to
information pertinent to the specific nature of the debt or equity investment, such as relevant market conditions,
offering prices, operating results, financial conditions, exit strategy and other qualitative information, as
available. The lack of an independent source to validate fair value estimates, including the impact of future
capital calls and transfer restrictions, is an inherent limitation in the valuation process. The amount by which the
carrying value exceeds the fair value that is determined to be other-than-temporary impairment is charged to
current earnings and the carrying value of the investment is written down accordingly. While the determination
of fair value involves estimates, no generic assumption is applied to all investments when evaluating for
impairment. As such, each estimate is unique to the individual investment, and none is individually significant.
The inherent uncertainty in the process of valuing equity securities for which a ready market is unavailable may
cause our estimated values of these securities to differ significantly from the values that would have been derived
had a ready market for the securities existed, and those differences could be material. The value of these
investments is at risk to changes in equity markets, general economic conditions and a variety of other factors,
which could result in an impairment charge in future periods.

64

Auction-Rate Securities

The Corporation holds a portfolio of auction-rate securities recorded as investment securities
available-for-sale and stated at fair value of $609 million at December 31, 2010. Due to the lack of a robust
secondary auction-rate securities market with active fair value indications, fair value at December 31, 2010 was
determined using an income approach based on a discounted cash flow model utilizing two significant
assumptions in the model: discount rate (including a liquidity risk premium) and workout period. The discount
rate was calculated using credit spreads of the underlying collateral or similar securities plus a liquidity risk
premium. The liquidity risk premium was based on observed industry auction-rate securities valuations by third
parties and incorporated the rate at which the various types of ARS had been redeemed or sold since acquisition
in 2008. The workout period was based on an assessment of publicly available information on efforts to
re-establish functioning markets for these securities and the Corporation’s redemption experience.

The fair value of auction-rate securities recorded on the Corporation’s consolidated balance sheets
represents management’s best estimate of the fair value of these instruments within the framework of existing
accounting standards. Changes in the above material assumptions could result
in significantly different
valuations. For example, an increase or decrease in the liquidity premium of 100 basis points changes the fair
value by $17 million at December 31, 2010.

The valuation of auction-rate securities is complex and is subject to a certain degree of management
judgment. The inherent uncertainty in the process of valuing auction-rate securities for which a ready market is
unavailable may cause estimated values of these auction-rate securities assets to differ from the values that would
have been derived had a ready market for the auction-rate securities existed, and those differences could be
significant. The use of an alternative valuation methodology or alternative approaches used to calculate material
assumptions could result in significantly different estimated values for these assets. In addition, the value of
auction-rate securities is at risk to changes in equity markets, general economic conditions and other factors.

GOODWILL

Goodwill is the value attributed to unidentifiable intangible elements in acquired businesses. Goodwill is
initially recorded at fair value and is subsequently evaluated at least annually for impairment. The Corporation
conducts its evaluation of goodwill impairment in the third quarter each year and on an interim basis if events or
changes in circumstances between annual tests indicate the assets might be impaired. Goodwill impairment
testing is performed at the reporting unit level, equivalent to a business segment or one level below. During the
third quarter 2010, the Corporation announced that the Retail Bank and Wealth & Institutional Management
business segments would report to a single individual. As a result of this change, the Corporation reassessed its
reporting units and concluded that, under the new reporting structure, the Corporation has three reporting units:
Business Bank, Retail Bank and Wealth & Institutional Management. These changes to the reporting units did
not affect the amount of goodwill previously allocated and did not impact the results of previous or current
goodwill impairment tests.

The goodwill impairment test is a two-step test. The first step of the goodwill impairment test compares
the estimated fair value of the Corporation’s identified reporting units with their carrying amount, including
goodwill. If the estimated fair value of a reporting unit exceeds its carrying value, goodwill of the reporting unit
is not impaired. If the estimated fair value of the reporting unit is less than the carrying value, the second step
must be performed to determine the implied fair value of the reporting unit’s goodwill and the amount of
goodwill impairment, if any.

Estimating the fair value of reporting units is a subjective process involving the use of estimates and
judgments, particularly related to future cash flows of the reporting units, discount rates (including market risk
premiums) and market multiples. Material assumptions used in the valuation models included the comparable
public company price multiples used in the terminal value, future cash flows and the market risk premium
component of the discount rate. The fair values of the reporting units were determined using a blend of two
commonly used valuation techniques: the market approach and the income approach. The Corporation gives

65

consideration to both valuation techniques, as either technique can be an indicator of value. For the market
approach, valuations of reporting units were based on an analysis of relevant price multiples in market trades in
companies with characteristics similar to the reporting unit. For the income approach, estimated future cash flows
(derived from internal forecasts and economic expectations for each reporting unit) and terminal value (value at
the end of the cash flow period, based on price multiples) were discounted. The discount rate was based on the
imputed cost of equity capital appropriate for each reporting unit.

As of December 31, 2010, the Business Bank had goodwill of approximately $90 million, the Retail Bank
the
approximately $47 million and the remaining goodwill balance of approximately $13 million of
Corporation’s consolidated goodwill of $150 million was associated with the Wealth and Institutional
Management reporting unit. At the conclusion of the first step of the goodwill impairment test performed in the
third quarter 2010, the estimated fair values of all reporting units exceeded their carrying amounts, including
goodwill. The results of the goodwill impairment test for each reporting unit were subjected to stress testing,
which consisted of reducing expected future net income by 10 percent, reducing comparable multiples by 10
percent and increasing the discount rate by 200 basis points. The fair values of all reporting units calculated
under the stressed environment exceeded their carrying value, including goodwill. Forecasted cash flows for each
of the reporting units improved from the prior year primarily as a result of improvements in credit metrics and
increases in deposits, including a favorable change in the deposit mix. Additionally, the estimated future cash
flows of the Retail Bank reflected management’s assumptions regarding the impact of the Financial Reform Act.

Economic conditions impact the assumptions related to imputed cost of equity capital, loss rates, interest
and growth rates. Adverse changes in the economic environment, a decline in the performance of the reporting
units or other factors could cause the fair value of the reporting units to fall below their carrying value, resulting
in a goodwill impairment charge. Additionally, if the actual impact of legislative and regulatory changes is
significantly different than management’s expectations, the fair value of the reporting units may fall below the
carrying value, resulting in a goodwill impairment charge. Any impairment charge would not affect the
Corporation’s regulatory capital ratios, tangible common equity ratio or liquidity position.

PENSION PLAN ACCOUNTING

The Corporation has defined benefit pension plans in effect for substantially all full-time employees hired
before January 1, 2007. Benefits under the plans are based on years of service, age and compensation.
Assumptions are made concerning future events that will determine the amount and timing of required benefit
payments, funding requirements and defined benefit pension expense. The three major assumptions are the
discount rate used in determining the current benefit obligation, the long-term rate of return expected on plan
assets and the rate of compensation increase. The assumed discount rate is determined by matching the expected
cash flows of the pension plans to a portfolio of high quality corporate bonds as of the measurement date,
December 31. The long-term rate of return expected on plan assets is set after considering both long-term returns
in the general market and long-term returns experienced by the assets in the plan. The current target asset
allocation model for the plans is detailed in Note 18 to the consolidated financial statements. The expected
returns on these various asset categories are blended to derive one long-term return assumption. The assets are
invested in certain collective investment and mutual funds, common stocks, U.S. Treasury and other U.S.
government agency securities, and corporate and municipal bonds and notes. The rate of compensation increase
is based on reviewing recent annual pension-eligible compensation increases as well as the expectation of future
increases. The Corporation reviews its pension plan assumptions on an annual basis with its actuarial consultants
to determine if the assumptions are reasonable and adjusts the assumptions to reflect changes in future
expectations.

The assumptions used to calculate 2011 expense for the defined benefit pension plans were a discount
rate of 5.51 percent, a long-term rate of return on plan assets of 7.75 percent and a rate of compensation increase
of 4.0 percent. Defined benefit pension expense in 2011 is expected to be approximately $48 million, an increase
of $18 million from the $30 million recorded in 2010, primarily driven by declines in the discount rate and in the
expected long-term rate of return on plan assets.

66

Changing the 2011 key actuarial assumptions discussed above by 25 basis points would have the

following impact on defined benefit pension expense in 2011:

(in millions)

Key Actuarial Assumption
Discount rate
Long-term rate of return
Rate of compensation increase

25 Basis Point

Increase

Decrease

$

(7.4) $
(3.7)
2.3

7.4
3.7
(2.3)

If the assumed long-term return on plan assets differs from the actual return on plan assets, the asset gains

or losses are incorporated in the market-related value of plan assets, which is used to determine the expected
return on assets. The market-related value of plan assets is determined by amortizing the current year’s
investment gains and losses (the actual investment return net of the expected investment return) over five years.
The amortization adjustment cannot exceed 10 percent of the fair value of assets.

The expected return on plan assets is calculated based on the market-related value of the assets at the

assumed long-term rate of return plus the impact of any contributions made during the year.

The market-related value method is a commonly used method of spreading investment gains and losses
over a five year period. The method reduces annual volatility, and the cumulative effect will ultimately be the
same as using the actual fair market value of plan assets over the long term. The Employee Benefits Committee,
which consists of executive and senior managers from various areas of the Corporation, provides broad asset
allocation guidelines to the asset managers, who report results and investment strategy quarterly to the Employee
Benefits Committee. Actual asset allocations are compared to target allocations by asset category and investment
returns for each class of investment are compared to expected results based on broad market indices.

The net funded status of the qualified and non-qualified defined benefit pension plans were an asset of
$55 million and a liability of $177 million, respectively, at December 31, 2010. Due to the long-term nature of
pension plan assumptions, actual results may differ significantly from the actuarial-based estimates. Differences
between estimates and experience not recovered in the market or by future assumption changes are required to be
recorded in shareholders’ equity as part of accumulated other comprehensive income (loss) and amortized to
defined benefit pension expense in future years. For further information, refer to Note 1 to the consolidated
financial statements. Actuarial net losses recognized in accumulated other comprehensive income (loss) at
December 31, 2010 were $54 million for the qualified defined benefit pension plan and $13 million for the
non-qualified defined benefit pension plan. In 2010, actual return on plan assets in the qualified defined benefit
pension plan was $172 million, compared to an expected return on plan assets of $116 million. In 2009, the
actual return on plan assets was $200 million, compared to an expected return on plan assets of $104 million. The
Corporation may make contributions from time to time to the qualified defined benefit plan to mitigate the
impact of the actuarial losses on future years. No contributions were made to the plan in 2010. There were no
assets in the non-qualified defined benefit pension plan at December 31, 2010, and 2009.

Defined benefit pension expense is recorded in “employee benefits” expense on the consolidated
statements of income and is allocated to business segments based on the segment’s share of salaries expense.
Given the salaries expense included in 2010 segment results, defined benefit pension expense was allocated
approximately 38 percent, 30 percent, 26 percent and 6 percent to the Retail Bank, Business Bank, Wealth &
Institutional Management and Finance segments, respectively, in 2010.

INCOME TAXES

The calculation of the Corporation’s income tax provision (benefit) and tax-related accruals is complex
and requires the use of estimates and judgments. The provision for income taxes is based on amounts reported in
the consolidated statements of income after deducting non-taxable items, principally income on bank-owned life

67

insurance, and deducting tax credits related to investments in low income housing partnerships, and includes
deferred income taxes on temporary differences between the income tax basis and financial accounting basis of
assets and liabilities. Accrued taxes represent the net estimated amount due to or to be received from taxing
jurisdictions, currently or in the future, and are included in “accrued income and other assets” or “accrued
expenses and other liabilities” on the consolidated balance sheets. The Corporation assesses the relative risks and
merits of tax positions for various transactions after considering statutes, regulations, judicial precedent and other
available information and maintains tax accruals consistent with these assessments. The Corporation is subject to
audit by taxing authorities that could question and/or challenge the tax positions taken by the Corporation.

During 2010, the IRS proposed an adjustment to taxable income for the years 2001-2006 which could result
in the repatriation of foreign earnings of a certain structured investment transaction. Repatriation of these earnings
could require the Corporation to pay income taxes of $53 million on foreign earnings of approximately $146
million. The Corporation continues to believe that these earnings were properly excluded from U.S. taxation and has
filed a protest to that effect with the IRS Appeals Office. The Corporation intends to reinvest these earnings
indefinitely and believes it is more likely than not that this tax position will be sustained. The Corporation has
reserved for this tax position accordingly.

Included in net deferred taxes are deferred tax assets. Deferred tax assets are evaluated for realization
based on available evidence of loss carryback capacity, projected future reversals of existing taxable temporary
differences and assumptions made regarding future events. A valuation allowance is provided when it is more-
likely-than-not that some portion of the deferred tax asset will not be realized.

Changes in the estimate of accrued taxes occur due to changes in tax law, interpretations of existing tax
laws, new judicial or regulatory guidance, and the status of examinations conducted by taxing authorities that
impact the relative risks and merits of tax positions taken by the Corporation. These changes in the estimate of
accrued taxes could be significant to the operating results of the Corporation. For further information on tax
accruals and related risks, see Note 19 to the consolidated financial statements.

68

SUPPLEMENTAL FINANCIAL DATA

The following table provides a reconciliation of non-GAAP financial measures used in this financial

review with financial measures defined by GAAP.

(dollar amounts in millions)
Years ended December 31

Impact of Excess Liquidity on Net Interest Margin (FTE):
Net interest income (FTE)
Less:

Interest earned on excess liquidity (a)

Net interest income (FTE), excluding excess liquidity

Average earning assets
Less:

Average net unrealized gains (losses) on investment securities

available-for-sale

Average earning assets for net interest margin (FTE)
Less:

Excess liquidity (a)

Average earning assets for net interest margin (FTE), excluding excess

liquidity

Net interest margin (FTE)
Net interest margin (FTE), excluding excess liquidity
Impact of excess liquidity on net interest margin (FTE)

Tier 1 Common Capital Ratio:
Tier 1 capital (b)
Less:

Fixed rate cumulative perpetual preferred stock
Trust preferred securities

Tier 1 common capital

Risk-weighted assets (b)
Tier 1 common capital ratio

Tangible Common Equity Ratio:
Total shareholders’ equity
Less:

Fixed rate cumulative perpetual preferred stock
Goodwill
Other intangible assets

Tangible common equity

Total assets
Less:

Goodwill
Other intangible assets

Tangible assets

Tangible common equity ratio

2010

2009

2008

2007

2006

$ 1,651

$ 1,575

$ 1,821

$ 2,006

$ 1,986

8

$ 1,643

$51,004

6

$ 1,569

$58,162

1

$ 1,820

$60,422

-

$ 2,006

$54,688

-

$ 1,986

$52,291

115

50,889

165

33

(69)

(127)

57,997

60,389

54,757

52,418

3,140

2,402

196

-

-

$47,749

$55,595

$60,193

$54,757

$52,418

3.24 %
3.44
(0.20)

2.72 %
2.83
(0.11)

3.02 %
3.03
(0.01)

3.66 %
3.66
-

3.79 %
3.79
-

$ 6,027

$ 7,704

$ 7,805

$ 5,640

$ 5,657

-
-

$ 6,027

$59,506

2,151
495

$ 5,058

$61,815

2,129
495

$ 5,181

$73,207

-
495

-
339

$ 5,145

$75,102

$ 5,318

$70,486

10.13 %

8.18 %

7.08 %

6.85 %

7.54 %

$ 5,793

$ 7,029

$ 7,152

$ 5,117

$ 5,153

-
150
6

$ 5,637

$53,667

150
6

2,151
150
8

$ 4,720

$59,249

150
8

2,129
150
12

$ 4,861

$67,548

150
12

-
150
12

-
150
14

$ 4,955

$62,331

$ 4,989

$58,001

150
12

150
14

$53,511

$59,091

$67,386

$62,169

$57,837

10.54 %

7.99 %

7.21 %

7.97 %

8.62 %

(a) Excess liquidity represented by interest earned on and average interest-bearing balances deposited with the FRB.
(b) Tier 1 capital and risk-weighted assets as defined by regulation.

The net interest margin (FTE), excluding excess liquidity, removes interest earned on balances deposited
with the FRB from net interest income (FTE) and average balances deposited with the FRB from average earning
assets from the numerator and denominator of the net interest margin (FTE) ratio, respectively. The Corporation
believes this measurement provides meaningful information to investors, regulators, management and others of
the impact on net interest income and net interest margin resulting from the Corporation’s short-term investment
in low yielding instruments.

69

The Tier 1 common capital ratio removes preferred stock and qualifying trust preferred securities from
Tier 1 capital as defined by and calculated in conformity with bank regulations. The tangible common equity
ratio removes preferred stock and the effect of intangible assets from capital and the effect of intangible assets
from total assets. The Corporation believes these measurements are meaningful measures of capital adequacy
used by investors, regulators, management and others to evaluate the adequacy of common equity and to
compare against other companies in the industry.

FORWARD-LOOKING STATEMENTS

This report includes forward-looking statements, as defined in the Private Securities Litigation Reform
Act of 1995. In addition, the Corporation may make other written and oral communications from time to time
that contain such statements. All statements regarding the Corporation’s expected financial position, strategies
and growth prospects and general economic conditions expected to exist in the future are forward-looking
statements. The words, “anticipates,” “believes,” “feels,” “expects,” “estimates,” “seeks,” “strives,” “plans,”
“intends,” “outlook,” “forecast,” “position,” “target,” “mission,” “assume,” “achievable,” “potential,” “strategy,”
“goal,” “aspiration,” “outcome,” “continue,” “remain,” “maintain,” “trend,” “objective,” and variations of such
words and similar expressions, or future or conditional verbs such as “will,” “would,” “should,” “could,”
“might,” “can,” “may” or similar expressions, as they relate to the Corporation or its management, are intended
to identify forward-looking statements.

The Corporation cautions that forward-looking statements are subject to numerous assumptions, risks and
uncertainties, which change over time. Forward-looking statements speak only as of the date the statement is
made, and the Corporation does not undertake to update forward-looking statements to reflect
facts,
circumstances, assumptions or events that occur after the date the forward-looking statements are made. Actual
results could differ materially from those anticipated in forward-looking statements and future results could
differ materially from historical performance.

(accessible on the SEC’s website

In addition to factors mentioned elsewhere in this report or previously disclosed in the Corporation’s SEC
reports
at
www.comerica.com), actual results could differ materially from forward-looking statements and future results
could differ materially from historical performance due to a variety of reasons, including but not limited to, the
following factors:

at www.sec.gov or on the Corporation’s website

• general political, economic or industry conditions, either domestically or internationally, may be less

favorable than expected;

• governmental monetary and fiscal policies may adversely affect the financial services industry and,

therefore impact the Corporation’s financial condition and results of operations;

• volatility and disruptions in global capital and credit markets may adversely impact the Corporation’s

business, financial condition and results of operations;

• the soundness of other financial institutions could adversely affect the Corporation;

• recently enacted legislation, actions recently taken or proposed by the United States Department of
Treasury, the Federal Deposit Insurance Corporation, the Federal Reserve Bank or other governmental
entities, and legislation enacted in the future subject or may subject the Corporation to further regulation,
and the impact and expiration of such legislation and regulatory actions may adversely affect
the
Corporation;

• unfavorable developments concerning credit quality could adversely impact the Corporation’s financial

results;

70

• the Corporation’s proposed acquisition of Sterling Bancshares, Inc. may present certain risks to the

Corporation’s business and operations;

• the Corporation may be subject to more stringent capital and liquidity requirements;

• problems faced by residential real estate developers could adversely affect the Corporation;

• businesses or industries in which the Corporation has lending concentrations, including, but not limited to,
the automotive production industry and the real estate business, could suffer a significant decline, which
could adversely affect the Corporation;

• the introduction, implementation, withdrawal, success and timing of business initiatives and strategies,
including, but not limited to, the opening of new banking centers, may be less successful or may be
different than anticipated, which could adversely affect the Corporation’s business;

• utilization of technology to efficiently and effectively develop, market and deliver new products and

services;

• operational difficulties or information security problems could adversely affect the Corporation’s business

and operations;

• changes in the financial markets, including fluctuations in interest rates and their impact on deposit pricing,

could adversely affect the Corporation’s net interest income and balance sheet;

• competitive product and pricing pressures among financial institutions within the Corporation’s markets

may change;

• changes in customer behavior may adversely impact the Corporation’s business, financial condition and

results of operations;

• management’s ability to maintain and expand customer relationships may differ from expectations;

• management’s ability to retain key officers and employees may change;

• legal and regulatory proceedings and related matters with respect to the financial services industry,
including those directly involving the Corporation and its subsidiaries, could adversely affect
the
Corporation or the financial services industry in general;

• changes in regulation or oversight may have a material adverse affect on the Corporation’s operations;

• methods of reducing risk exposures might not be effective;

• terrorist activities or other hostilities may adversely affect the general economy, financial and capital

markets, specific industries, and the Corporation; and

• natural disasters, including, but not limited to, hurricanes, tornadoes, earthquakes, fires and floods, may
the general economy, financial and capital markets, specific industries, and the

adversely affect
Corporation.

71

CONSOLIDATED BALANCE SHEETS
Comerica Incorporated and Subsidiaries

(in millions, except share data)
December 31

ASSETS
Cash and due from banks

Interest-bearing deposits with banks
Other short-term investments

Investment securities available-for-sale

Commercial loans
Real estate construction loans
Commercial mortgage loans
Residential mortgage loans
Consumer loans
Lease financing
International loans
Total loans

Less allowance for loan losses

Net loans
Premises and equipment
Customers’ liability on acceptances outstanding
Accrued income and other assets

Total assets

LIABILITIES AND SHAREHOLDERS’ EQUITY
Noninterest-bearing deposits

Money market and NOW deposits
Savings deposits
Customer certificates of deposit
Other time deposits
Foreign office time deposits

Total interest-bearing deposits
Total deposits

Short-term borrowings
Acceptances outstanding
Accrued expenses and other liabilities
Medium- and long-term debt
Total liabilities

Fixed rate cumulative perpetual preferred stock, series F, no par value, $1,000 liquidation value

per share:

Authorized - 2,250,000 shares at 12/31/09
Issued - 2,250,000 shares at 12/31/09

Common stock - $5 par value:

Authorized - 325,000,000 shares
Issued - 203,878,110 shares at 12/31/10 and 178,735,252 shares at 12/31/09

Capital surplus
Accumulated other comprehensive loss
Retained earnings
Less cost of common stock in treasury - 27,342,518 shares at 12/31/10 and 27,555,623 shares

at 12/31/09

Total shareholders’ equity
Total liabilities and shareholders’ equity

See notes to consolidated financial statements.

72

2010

2009

$

668

$

1,415
141

7,560

22,145
2,253
9,767
1,619
2,311
1,009
1,132
40,236
(901)
39,335
630
9
3,909
53,667

15,538

17,622
1,397
5,482
-
432
24,933
40,471
130
9
1,126
6,138
47,874

$

$

$

$

774

4,843
138

7,416

21,690
3,461
10,457
1,651
2,511
1,139
1,252
42,161
(985)
41,176
644
11
4,247
59,249

15,871

14,450
1,342
6,413
1,047
542
23,794
39,665
462
11
1,022
11,060
52,220

-

2,151

1,019
1,481
(389)
5,247

894
740
(336)
5,161

(1,565)
5,793
53,667

$

(1,581)
7,029
59,249

$

CONSOLIDATED STATEMENTS OF INCOME
Comerica Incorporated and Subsidiaries

(in millions, except per share data)
Years Ended December 31

INTEREST INCOME
Interest and fees on loans
Interest on investment securities
Interest on short-term investments

Total interest income

INTEREST EXPENSE
Interest on deposits
Interest on short-term borrowings
Interest on medium- and long-term debt
Total interest expense
Net interest income

Provision for loan losses

Net interest income after provision for loan losses

NONINTEREST INCOME
Service charges on deposit accounts
Fiduciary income
Commercial lending fees
Letter of credit fees
Card fees
Foreign exchange income
Bank-owned life insurance
Brokerage fees
Net securities gains
Other noninterest income

Total noninterest income

NONINTEREST EXPENSES
Salaries
Employee benefits

Total salaries and employee benefits

Net occupancy expense
Equipment expense
Outside processing fee expense
Software expense
FDIC insurance expense
Legal fees
Advertising expense
Other real estate expense
Litigation and operational losses
Provision for credit losses on lending-related commitments
Other noninterest expenses

Total noninterest expenses

Income (loss) from continuing operations before income taxes
Provision (benefit) for income taxes
Income from continuing operations
Income from discontinued operations, net of tax
NET INCOME
Less:

Preferred stock dividends
Income allocated to participating securities

Net income (loss) attributable to common shares

Basic earnings per common share:

Income (loss) from continuing operations
Net income (loss)

Diluted earnings per common share:

Income (loss) from continuing operations
Net income (loss)

Cash dividends declared on common stock
Cash dividends declared per common share

See notes to consolidated financial statements.

73

$

$

$

$

2010

2009

2008

$

$

$

$

1,617
226
10
1,853

115
1
91
207
1,646
480
1,166

208
154
95
76
58
39
40
25
3
91
789

740
179
919
162
63
96
89
62
35
30
29
11
(2)
146
1,640
315
55
260
17
277

123
1
153

0.79
0.90

0.78
0.88

44
0.25

1,767
329
9
2,105

372
2
164
538
1,567
1,082
485

228
161
79
69
51
41
35
31
243
112
1,050

687
210
897
162
62
97
84
90
37
29
48
10
-
134
1,650
(115)
(131)
16
1
17

$

$

134
1
(118) $

(0.80) $
(0.79)

(0.80)
(0.79)

30
0.20

2,649
389
13
3,051

734
87
415
1,236
1,815
686
1,129

229
199
69
69
58
40
38
42
67
82
893

781
194
975
156
62
104
76
16
29
30
10
103
18
172
1,751
271
59
212
1
213

17
4
192

1.28
1.29

1.28
1.28

348
2.31

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY
Comerica Incorporated and Subsidiaries

(in millions, except per
share data)

Nonredeemable
Preferred
Stock

Common Stock

Shares

Outstanding Amount

Capital
Surplus

Accumulated
Other
Comprehensive
Loss

Retained
Earnings

Treasury
Stock

Total
Shareholders’
Equity

BALANCE AT

DECEMBER 31, 2007

Net income
Other comprehensive loss,

$

net of tax

Total comprehensive income
Cash dividends declared on
common stock ($2.31 per
share)

Purchase of common stock
Issuance of preferred stock

and related warrant
Accretion of discount on

preferred stock

Net issuance of common
stock under employee
stock plans

Share-based compensation
BALANCE AT

DECEMBER 31, 2008

Net income
Other comprehensive loss,

net of tax

Total comprehensive loss
Cash dividends declared on

preferred stock

Cash dividends declared on
common stock ($0.20 per
share)

Purchase of common stock
Accretion of discount on

preferred stock

Net issuance of common
stock under employee
stock plans

Share-based compensation
Other
BALANCE AT

DECEMBER 31, 2009

Net income
Other comprehensive loss,

net of tax

Total comprehensive income
Cash dividends declared on

preferred stock

Cash dividends declared on
common stock ($0.25 per
share)

Purchase of common stock
Issuance of common stock
Redemption of preferred

stock

Redemption discount

accretion on preferred
stock

Accretion of discount on

preferred stock

Net issuance of common
stock under employee
stock plans

Share-based compensation
Other
BALANCE AT

DECEMBER 31, 2010

-
-

-

-
-

2,126

3

-
-

150.0 $
-

894
-

$

564 $
-

-

-
-

-

-

0.5
-

-

-
-

-

-

-
-

-

-
-

124

-

(19)
53

$

2,129
-

150.5 $
-

894
-

$

722 $
-

-

-

-
-

22

-
-
-

-

-

-
(0.1)

-

0.8
-
-

-

-

-
-

-

-
-
-

-

-

-
-

-

(15)
32
1

(177) $ 5,497
213

-

(132)

-

-
-

-

-

-
-

(348)
-

-

(3)

(14)
-

(309) $ 5,345
17

-

(27)

-

-

-
-

-

-
-
-

(113)

(30)
-

(22)

(36)
-
-

$ (1,661) $

-

-

-
(1)

-

-

33
-

$ (1,629) $

-

-

-

-
(1)

-

48
-
1

5,117
213

(132)
81

(348)
(1)

2,250

-

-
53

7,152
17

(27)
(10)

(113)

(30)
(1)

-

(3)
32
2

$

2,151
-

151.2 $
-

894
-

$

740 $
-

(336) $ 5,161
277

-

$ (1,581) $

-

7,029
277

-

-

-
-
-

(2,250)

94

5

-
-
-

-

$

-

-

-

-

-
(0.1)
25.1

-
-
125

-

-

-

0.3
-
-

-

-

-

-
-
-

-

-

-
-
724

-

-

-

(11)
32
(4)

(53)

-

-

-
-
-

-

-

-

-
-
-

(38)

(44)
-
-

-

(94)

(5)

(10)
-
-

-

-

-
(4)
-

-

-

-

19
-
1

(53)
224

(38)

(44)
(4)
849

(2,250)

-

-

(2)
32
(3)

176.5 $ 1,019

$

1,481 $

(389) $ 5,247

$ (1,565) $

5,793

See notes to consolidated financial statements.

74

CONSOLIDATED STATEMENTS OF CASH FLOWS
Comerica Incorporated and Subsidiaries

(in millions)
Years Ended December 31

OPERATING ACTIVITIES

Net income

Income from discontinued operations, net of tax
Income from continuing operations, net of tax

Adjustments to reconcile net income to net cash provided by operating activities:

Provision for loan losses
Provision for credit losses on lending-related commitments
Provision for deferred income taxes
Depreciation and software amortization
Auction-rate securities charge
Lease income charge
Net gain on early termination of leveraged leases
Share-based compensation expense
Net amortization (accretion) of securities
Net securities gains
Net gain on sales of businesses
Gain on repurchase of medium- and long-term debt
Contribution to qualified pension plan
Excess tax benefits from share-based compensation arrangements
Net (increase) decrease in trading securities
Net decrease in loans held-for-sale
Net decrease in accrued income receivable
Net increase (decrease) in accrued expenses
Other, net
Discontinued operations, net

Net cash provided by operating activities

INVESTING ACTIVITIES

Proceeds from sales of investment securities available-for-sale
Proceeds from maturities and redemptions of investment securities available-for-sale
Purchases of investment securities available-for-sale
Sales (purchases) of Federal Home Loan Bank stock
Net decrease (increase) in loans
Proceeds from early termination of leveraged leases
Net increase in fixed assets
Net decrease in customers’ liability on acceptances outstanding
Proceeds from sale of business

Net cash provided by (used in) investing activities

FINANCING ACTIVITIES

Net increase (decrease) in deposits
Net decrease in short-term borrowings
Net decrease in acceptances outstanding
Proceeds from issuance of medium- and long-term debt
Repayments of medium- and long-term debt
Redemptions of medium-and long-term debt
Proceeds from issuance of common stock
Redemption of preferred stock
Proceeds from issuance of preferred stock and related warrant
Proceeds from issuance of common stock under employee stock plans
Excess tax benefits from share-based compensation arrangements
Purchase of common stock for treasury
Dividends paid on common stock
Dividends paid on preferred stock

Net cash (used in) provided by financing activities

Net (decrease) increase in cash and cash equivalents
Cash and cash equivalents at beginning of year
Cash and cash equivalents at end of year
Interest paid
Income taxes, tax deposits and tax-related interest paid
Noncash investing and financing activities:
Loans transferred to other real estate
Loans transferred from held-for-sale to portfolio

See notes to consolidated financial statements.

75

2010

2009

2008

$

$

277
17
260

$

17
1
16

480
(2)
(202)
124
-
-
-
32
26
(3)
-
-
-
(1)
(10)
7
15
57
486
17
1,286

151
2,152
(2,410)
144
1,259
-
(92)
2
-
1,206

771
(332)
(2)
298
(2,610)
(2,680)
849
(2,250)
-
5
1
(4)
(34)
(38)
(6,026)
(3,534)
5,617
2,083
227
108

104
-

$
$
$

$

1,082
-
(112)
122
-
-
(8)
32
(5)
(243)
(5)
(15)
(100)
-
16
4
62
(311)
(445)
1
91

8,785
2,253
(9,011)
82
7,317
107
(74)
3
7
9,469

(2,010)
(1,287)
(3)
-
(3,683)
(197)
-
-
-
-
-
(1)
(72)
(113)
(7,366)
2,194
3,423
5,617
619
251

114
-

$
$
$

$

$
$
$

$

213
1
212

686
18
(99)
114
88
38
-
51
(11)
(67)
-
-
(175)
-
(6)
99
82
(306)
137
1
862

156
1,667
(4,496)
(353)
(259)
-
(166)
34
-
(3,417)

(2,299)
(1,058)
(34)
8,000
(2,000)
-
-
-
2,250
1
-
(1)
(395)
-
4,464
1,909
1,514
3,423
1,266
241

65
84

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Organization

Comerica Incorporated (the Corporation) is a registered financial holding company headquartered in
Dallas, Texas. The Corporation’s major business segments are the Business Bank, the Retail Bank and Wealth &
Institutional Management. For further discussion of each business segment, refer to Note 23. The Corporation
operates in four primary geographic markets: Midwest, Western, Texas and Florida. The Corporation and its
banking subsidiaries are regulated at both the state and federal levels.

The accounting and reporting policies of the Corporation conform to U.S. generally accepted accounting
principles (GAAP). The preparation of financial statements in conformity with GAAP requires management to
make estimates and assumptions that affect reported amounts and disclosures. Actual results could differ from
these estimates.

The following summarizes the significant accounting policies of the Corporation applied in the

preparation of the accompanying consolidated financial statements.

Principles of Consolidation

The consolidated financial statements include the accounts of the Corporation and its subsidiaries after
elimination of all significant intercompany accounts and transactions. Certain amounts in the financial statements
for prior years have been reclassified to conform to current financial statement presentation.

In the first quarter 2010, the Corporation adopted Accounting Standards Update (ASU) No. 2009-17,
“Improvements in Financial Reporting by Enterprises Involved with Variable Interest Entities,” (ASU 2009-17).
ASU 2009-17 amends consolidation guidance related to variable interest entities (VIEs) by replacing a
quantitative approach for determining which enterprise, if any, is the primary beneficiary and required to
consolidate a VIE with a qualitative approach. The qualitative approach is focused on identifying which
enterprise has both the power to direct the activities of the VIE that most significantly impact the entity’s
economic performance and the obligation to absorb losses or the right to receive benefits that could be significant
to the VIE. ASU 2009-17 requires reconsideration of the primary beneficiary whenever circumstances change
and eliminates the exception for qualifying special-purpose entities from consolidation guidance.

Also in the first quarter 2010,

the Financial Accounting Standards Board (FASB) issued ASU
No. 2010-10, “Amendments for Certain Investment Funds,” (ASU 2010-10). ASU 2010-10 indefinitely defers
the requirements of ASU 2009-17 for certain investment funds with attributes of an investment company
specified in the accounting guidance, including, but not limited to, venture capital funds, private equity funds and
mutual funds. The deferral is also applicable to a reporting enterprise’s interest in an entity that is required to
comply with or operates in accordance with requirements similar to those in Rule 2a-7 of the Investment
Company Act of 1940 for registered money market funds. For funds that qualify for the deferral, the Corporation
will continue to analyze whether such funds should be consolidated under authoritative guidance that existed
prior to the issuance of ASU 2009-17.

The Corporation was not required to consolidate any additional VIEs with which the Corporation was

involved as a result of implementing the guidance in ASU 2009-17, as amended by ASU 2010-10.

The Corporation consolidates variable interest entities in which it is the primary beneficiary. In general, a
VIE is an entity that either (1) has an insufficient amount of equity to carry out its principal activities without
additional subordinated financial support, (2) has a group of equity owners that are unable to make significant
decisions about its activities or (3) has a group of equity owners that do not have the obligation to absorb losses
or the right to receive returns generated by its operations. If any of these characteristics is present, the entity is
subject to a variable interests consolidation model, and consolidation is based on variable interests, not on

76

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

ownership of the entity’s outstanding voting stock. Variable interests are defined as contractual ownership or
other money interests in an entity that change with fluctuations in the entity’s net asset value. The primary
beneficiary consolidates the VIE; the primary beneficiary is defined as the enterprise that has both the power to
direct the activities of the VIE that most significantly impact the entity’s economic performance and the
obligation to absorb losses or the right to receive benefits that could be significant to the VIE. The Corporation
consolidates entities not determined to be VIEs when it holds a majority (controlling) interest in the entity’s
outstanding voting stock.

Equity investments in entities that are not VIEs where the Corporation owns less than a majority
(controlling) interest and equity investments in entities that are VIEs where the Corporation is not the primary
beneficiary are not consolidated. Rather, such investments are accounted for using either the equity method or
cost method. The equity method is used for investments in corporate joint ventures and investments where the
Corporation has the ability to exercise significant influence over the investee’s operation and financial policies,
which is generally presumed to exist if the Corporation owns more than 20 percent of the voting interest of the
investee. Equity method investments are included in “accrued income and other assets” on the consolidated
balance sheets, with income and losses recorded in “other noninterest income” on the consolidated statements of
income. Unconsolidated equity investments that do not meet the criteria to be accounted for under the equity
method are accounted for under the cost method. Cost method investments are included in “accrued income and
other assets” on the consolidated balance sheets, with income (net of write-downs) recorded in “other noninterest
income” on the consolidated statements of income.

See Note 10 for additional information about the Corporation’s involvement with VIEs.

Fair Value Measurements

Fair value measurement applies whenever accounting guidance requires or permits assets or liabilities to
be measured at fair value. Fair value is defined as the exchange price that would be received to sell an asset or
paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly
transaction (i.e., not a forced transaction, such as a liquidation or distressed sale) between market participants at
the measurement date. Fair value is based on the assumptions market participants would use when pricing an
asset or liability. Fair value measurements and disclosures guidance establishes a three-level fair value hierarchy
based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to
determine fair value. The fair value hierarchy gives the highest priority to quoted prices in active markets and the
lowest priority to unobservable data. Fair value measurements are separately disclosed by level within the fair
value hierarchy. For assets and liabilities recorded at fair value, it is the Corporation’s policy to maximize the use
of observable inputs and minimize the use of unobservable inputs when developing fair value measurements for
those items for which there is an active market.

Fair value measurements for assets and liabilities where limited or no observable market data exists and,
therefore, are based primarily upon estimates, are often calculated based on the economic and competitive
environment, the characteristics of the asset or liability and other factors. Therefore, the results cannot be
determined with precision and may not be realized in an actual sale or immediate settlement of the asset or
liability. Additionally, there may be inherent weaknesses in any calculation technique, and changes in the
underlying assumptions used, including discount rates and estimates of future cash flows, could significantly
affect the results of current or future values.

For further information about fair value measurements, refer to Note 3.

Other Short-Term Investments

Other short-term investments include trading securities and loans held-for-sale.

77

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Trading securities are carried at market value. Realized and unrealized gains or losses on trading

securities are included in “other noninterest income” on the consolidated statements of income.

Loans held-for-sale, typically residential mortgages and Small Business Administration loans originated
with the intent to sell, are carried at the lower of cost or fair value. Fair value is determined in the aggregate for
each portfolio. Changes in fair value are included in “other noninterest income” on the consolidated statements of
income.

Investment Securities

Securities that are not held for trading purposes are accounted for as securities available-for-sale and
recorded at fair value, with unrealized gains and losses, net of income taxes, reported as a separate component of
other comprehensive income (loss) (OCI).

Investment securities are reviewed quarterly for possible other-than-temporary impairment (OTTI). In
determining whether OTTI exists for debt securities in an unrealized loss position, the Corporation assesses the
likelihood of selling the security prior to the recovery of its amortized cost basis. If the Corporation intends to
sell the debt security or it is more-likely-than-not that the Corporation will be required to sell the debt security
prior to the recovery of its amortized cost basis, the debt security is written down to fair value, and the full
amount of any impairment charge is recorded as a loss in “net securities gains” in the consolidated statements of
income. If the Corporation does not intend to sell the debt security and it is more-likely-than-not that the
Corporation will not be required to sell the debt security prior to recovery of its amortized cost basis, only the
credit component of any impairment of a debt security is recognized as a loss in “net securities gains” on the
consolidated statements of income, with the remaining impairment recorded in OCI.

The OTTI review for equity securities includes an analysis of the facts and circumstances of each
individual investment and focuses on the severity of loss, the length of time the fair value has been below cost,
the expectation for that security’s performance, the financial condition and near-term prospects of the issuer, and
management’s intent and ability to hold the security to recovery. A decline in value of an equity security that is
considered to be other-than-temporary is recorded as a loss in “net securities gains” on the consolidated
statements of income.

Gains or losses on the sale of securities are computed based on the adjusted cost of the specific security

sold.

Loans

For further information on investment securities, refer to Note 4.

Loans and leases originated and held for investment are recorded at the principal balance outstanding, net
of unearned income, charge-offs and unamortized deferred fees and costs. Interest income is recognized on loans
and leases based on the principal balance outstanding using the interest method. Net deferred income, including
unearned income and unamortized costs, fees, premiums and discounts, totaled $370 million and $405 million at
December 31, 2010 and 2009, respectively.

Loan Origination Fees and Costs

Substantially all loan origination fees and costs are deferred and amortized to net interest income of over

the life of the related loan or over the commitment period as a yield adjustment.

Loan fees on unused commitments and net origination fees related to loans sold are recognized in

noninterest income.

78

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Allowance for Credit Losses

The allowance for credit losses includes both the allowance for loan losses and the allowance for credit

losses on lending-related commitments.

In the fourth quarter 2010, the Corporation adopted certain portions of ASU No. 2010-20, “Receivables
(Topic 310): Disclosures about the Credit Quality of Financing Receivables and the Allowance for Credit
Losses,” (ASU 2010-20), which requires enhanced disclosures about an entity’s credit quality of financing
receivables and the related allowance for credit losses. The Corporation will adopt the activity-related provisions
of ASU 2010-20 in the first quarter 2011. The disclosure requirements of ASU 2010-20 regarding troubled debt
restructurings have been delayed by the FASB. The provisions of ASU 2010-20 require significant expansion of
the Corporation’s disclosures on the credit quality of financing receivables and the allowance for credit losses.
The fourth quarter 2010 adoption of ASU 2010-20 did not have a material effect on the Corporation’s financial
condition and results of operations. The Corporation does not expect the adoption of the remainder of ASU
2010-20 to have a material effect on the Corporation’s financial condition and results of operations.

The disclosures required by ASU 2010-20 are provided in Note 5.

Allowance for Loan Losses

The allowance for loan losses represents management’s assessment of probable, estimable losses inherent
in the Corporation’s loan portfolio. The allowance for loan losses includes specific allowances, based on
individual evaluations of certain loans and loan relationships, and allowances for homogeneous pools of loans
with similar risk characteristics for the remaining business and retail loans. The Corporation defines business
loans as those belonging to the commercial, real estate construction, commercial mortgage, lease financing and
international loan portfolios. Retail loans consist of traditional residential mortgage, home equity and other
consumer loans.

A loan is considered impaired when it is probable that interest or principal payments will not be made in
accordance with the contractual terms of the original loan agreement. For business and certain retail loans
identified based on the combination of internally assigned ratings and a defined dollar threshold set periodically,
the Corporation performs a detailed credit quality review quarterly to determine whether impairment exists and
establishes a specific allowance for such loans, estimated using one of several methods, including the estimated
fair value of underlying collateral, observable market value of similar debt or discounted expected future cash
flows.

Independent third-party appraisals are obtained prior to the origination of any first mortgage loan. “As
developed” collateral values are used at the time of origination of a construction loan, on the assumption that the
construction facility provides sufficient funds to complete the project and carry it until it is leased or sold. Credit
reviews are performed at least annually on each collateral-dependent loan and, if necessary, adjustments to the
original appraisals are made to reflect the most current risk profile of the project. These adjustments may include
a revised rental rate or absorption rate, based on the actual conditions at that time. Updated independent third-
party appraisals are generally obtained at the time of a refinance or restructure where additional advances are
requested or when there is evidence that the physical aspects of the property have deteriorated.

For collateral-dependent

impaired loans, updated appraisals are obtained at

least annually unless
conditions dictate increased frequency. Appraisals on impaired construction loans are generally based on “as is”
collateral values. In certain circumstances, the Corporation may believe that the highest and best use of the
collateral, and thus the most advantageous exit strategy, requires completion of the construction project. In these
situations,
the
“as-developed” collateral value is appropriately adjusted to reflect the cost to complete the construction project
and to prepare the property for sale. The Corporation may reduce the collateral value based upon the age of the
appraisal and adverse developments in market conditions.

the Corporation uses an “as-developed” appraisal

to evaluate alternatives. However,

79

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Loans which do not meet the criteria to be evaluated individually are evaluated in homogeneous pools of
loans with similar risk characteristics. Internal risk ratings are assigned to each business loan at the time of
approval and are subjected to subsequent periodic reviews by the Corporation’s senior management. The
allowance for business loans not individually evaluated is determined by applying standard reserve factors to the
pool of business loans within each internal risk rating. Standard reserve factors for the loans within each risk
rating are updated quarterly and are based on estimated probabilities of default and loss given default,
incorporating factors such as recent charge-off experience, current economic conditions and trends, changes in
collateral values of properties securing loans, and trends with respect to past due and nonaccrual amounts. The
standard reserve factors are supported by underlying analysis, including information on migration and loss given
default studies from each of the three largest domestic geographic markets (Midwest, Western and Texas).
Incremental reserves may be established to cover losses in industries and/or portfolios experiencing elevated loss
levels. On a limited basis, where the Corporation lacks sufficient default experience to develop its own
probability of default metrics, the Corporation utilizes bond tables published by Standard & Poor’s (S&P). On an
annual basis, the Corporation maps a sample of the publicly rated credits in its portfolio that are assigned the best
internal risk ratings to the S&P bond tables to establish probability of default for these risk ratings. The
Corporation has sufficient default experience and is able to generate its own probability of default metrics on the
remainder of the loan portfolio. The Corporation uses its own loss given default experience to determine the
overall expected loss measure.

The allowance for retail loans not individually evaluated is determined by applying estimated loss rates to
various pools of loans within the portfolios with similar risk characteristics. Estimated loss rates for all pools are
updated quarterly, incorporating factors such as recent charge-off experience, current economic conditions and
trends, changes in collateral values of properties securing loans (using index-based estimates), and trends with
respect to past due and nonaccrual amounts.

Actual losses experienced in the future may vary from those estimated. The uncertainty occurs because
factors may exist which affect the determination of probable losses inherent in the loan portfolio and are not
necessarily captured by the application of standard reserve factors or identified industry-specific risks. An
additional allowance is established to capture these probable losses and reflects management’s view that the
allowance should recognize the margin for error inherent in the process of estimating expected loan losses. The
Corporation periodically reviews its methodology to ensure factors considered in the determination of probable
losses inherent in the loan portfolio are appropriate. Factors that were considered in the evaluation of the
adequacy of the Corporation’s allowance for loan losses included the inherent imprecision in the risk rating
system resulting from inaccuracy in assigning risk ratings or stale ratings which may not have been updated for
recent trends in particular credits. Risk ratings on business loan relationships meeting an internally specified
exposure threshold are updated annually or more frequently upon the occurrence of a circumstance that affects
the credit risk of the relationship.

The total allowance for loan losses is sufficient to absorb incurred losses inherent in the total portfolio.
Unanticipated economic events, including political, economic and regulatory instability in countries where the
Corporation has loans, could cause changes in the credit characteristics of the portfolio and result in an
unanticipated increase in the allowance. Inclusion of other industry-specific portfolio exposures in the allowance,
as well as significant increases in the current portfolio exposures, could also increase the amount of the
allowance. Any of these events, or some combination thereof, may result in the need for additional provision for
loan losses in order to maintain an allowance that complies with credit risk and accounting policies.

Loans deemed uncollectible are charged off and deducted from the allowance. The provision for loan

losses and recoveries on loans previously charged off are added to the allowance.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Allowance for Credit Losses on Lending-Related Commitments

The allowance for credit losses on lending-related commitments provides for probable credit losses
inherent in lending-related commitments, including unused commitments to extend credit and letters of credit.
The allowance for credit
losses on lending-related commitments includes specific allowances, based on
individual evaluations of certain letters of credit in a manner consistent with business loans, and allowances
based on the pool of the remaining letters of credit and all unused commitments to extend credit within each
internal risk rating. A probability of draw estimate is applied to the commitment amount, and the result is
multiplied by standard reserve factors consistent with business loans. In general, the probability of draw for
letters of credit is considered certain for all letters of credit supporting loans and for letters of credit assigned an
internal risk rating generally consistent with regulatory defined substandard or doubtful. Other letters of credit
and all unfunded commitments have a lower probability of draw The allowance for credit losses on lending-
related commitments is included in “accrued expenses and other liabilities” on the consolidated balance sheets,
with the corresponding charge reflected in “provision for credit losses on lending-related commitments” in
noninterest expenses on the consolidated statements of income.

Nonperforming Assets

Nonperforming assets consist of loans, including loans held-for-sale, and debt securities for which the
accrual of interest has been discontinued, loans which have been renegotiated to less than the original contractual
rates (reduced-rate loans) and real estate which has been acquired through foreclosure and is awaiting disposition
(foreclosed property).

A loan is impaired when it is probable that interest or principal payments will not be made in accordance
with the contractual terms of the original loan agreement. Consistent with this definition, all nonaccrual and
reduced-rate loans are considered impaired. Nonaccrual loans include nonaccrual troubled debt restructurings.

Residential mortgage and home equity loans are generally placed on nonaccrual status and charged off to
current appraised values, less costs to sell, during the foreclosure process, normally no later than 180 days past
due. Other consumer loans are generally not placed on nonaccrual status and are charged off at no later than 120
days past due, earlier if deemed uncollectible. Business loans and debt securities are generally placed on
nonaccrual status when management determines full collection of principal or interest is unlikely or when
principal or interest payments are 90 days past due, unless the loan is fully collateralized and in the process of
collection. At the time a loan or debt security is placed on nonaccrual status, interest previously accrued but not
collected is charged against current income. Income on such loans and debt securities is then recognized only to
the extent that cash is received and where future collection of principal is probable. Generally, a loan or debt
security may be returned to accrual status when all delinquent principal and interest have been received and the
Corporation expects repayment of the remaining contractual principal and interest, or when the loan or debt
security is both well secured and in the process of collection.

Foreclosed property is carried at the lower of cost or fair value, less estimated costs to sell. Independent
appraisals are obtained to substantiate the fair value of real estate transferred to foreclosed property at the time of
foreclosure and updated at least annually or upon evidence of deterioration in the property’s value. At the time of
foreclosure, any excess of the related loan balance over fair value (less estimated costs to sell) of the property
acquired is charged to the allowance for loan losses. Subsequent write-downs, operating expenses and losses
upon sale, if any, are charged to noninterest expenses. Foreclosed property is included in “accrued income and
other assets” on the consolidated balance sheets.

Premises and Equipment

Premises and equipment are stated at cost, less accumulated depreciation and amortization. Depreciation,
computed on the straight-line method, is charged to operations over the estimated useful lives of the assets.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Estimated useful lives are generally three years to 33 years for premises that the Corporation owns and three
years to eight years for furniture and equipment. Leasehold improvements are amortized over the terms of their
respective leases or 10 years, whichever is shorter.

Software

Capitalized software is stated at cost, less accumulated amortization. Capitalized software includes
purchased software and capitalizable application development costs associated with internally-developed
software. Amortization, computed on the straight-line method, is charged to operations over five years, the
estimated useful life of the software. Capitalized software is included in “accrued income and other assets” on the
consolidated balance sheets.

Goodwill

The Corporation performs its annual impairment test for goodwill in the third quarter of each year, or on
an interim basis if events or changes in circumstances between annual tests indicate the assets might be impaired.
The annual test of goodwill, performed in the third quarter 2010, did not indicate that an impairment charge was
required.

Under applicable accounting standards, the goodwill impairment test is a two-step test. The first step of
the goodwill impairment test compares the estimated fair value of identified reporting units, equivalent to a
business segment or one level below, with their carrying amount, including goodwill. If the estimated fair value
of a reporting unit exceeds its carrying value, goodwill of the reporting unit is not impaired. If the estimated fair
value of the reporting unit is less than the carrying value, the second step must be performed to determine the
implied fair value of the reporting unit’s goodwill and the amount of goodwill impairment, if any. Estimating the
fair value of reporting units is a subjective process involving the use of estimates and judgments, particularly
related to future cash flows of the reporting units, discount rates (including market risk premiums) and market
multiples. Material assumptions used in the valuation models included the comparable public company price
multiples used in the terminal value, future cash flows and the market risk premium component of the discount
rate. The estimated fair values of the reporting units were determined using a blend of two commonly used
valuation techniques: the market approach and the income approach. The Corporation gives consideration to both
valuation techniques, as either technique can be an indicator of value. For the market approach, valuations of
reporting units were based on an analysis of relevant price multiples in market trades in companies with
characteristics similar to the reporting unit. For the income approach, estimated future cash flows (derived from
internal forecasts and economic expectations for each reporting unit) and terminal value (value at the end of the
cash flow period, based on price multiples) were discounted. The discount rate was based on the imputed cost of
equity capital appropriate for each reporting unit.

During the third quarter 2010, the Corporation announced that the Retail Bank and Wealth & Institutional
Management business segments would report to a single executive. As a result of this change, the Corporation
reassessed its reporting units and concluded that, under the new reporting structure, the Corporation has three
reporting units: Business Bank, Retail Bank and Wealth & Institutional Management. These changes to the
reporting units did not affect the amount of goodwill previously allocated and did not impact the results of
previous or current goodwill impairment tests.

Additional information regarding goodwill and impairment testing can be found in Note 8.

Nonmarketable Equity Securities

The Corporation has a portfolio of investments in indirect private equity and venture capital funds. The
majority of these investments are not readily marketable, are accounted for on the cost or equity method and are
included in “accrued income and other assets” on the consolidated balance sheets. The investments are

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

individually reviewed for impairment on a quarterly basis by comparing the carrying value to the estimated fair
value. The amount by which the carrying value exceeds the fair value that is determined to be other-than-
temporary impairment is charged to current earnings and the carrying value of the investment is written down
accordingly.

The Corporation also holds restricted equity investments, which are securities the Corporation is required
to hold for various reasons and consist primarily of Federal Home Loan Bank of Dallas (FHLB) and Federal
Reserve Bank (FRB) stock. Restricted equity securities, classified in “accrued income and other assets” on the
consolidated balance sheets, are not readily marketable and are recorded at cost (par value) and evaluated for
impairment based on the ultimate recoverability of the par value. If the Corporation does not expect to recover
the full par value, the amount by which the par value exceeds the ultimately recoverable value would be charged
to current earnings and the carrying value of the investment would be written down accordingly.

Derivative Instruments and Hedging Activities

Derivative instruments are carried at fair value in either “accrued income and other assets” or “accrued
expenses and other liabilities” on the consolidated balance sheets. The accounting for changes in the fair value
(i.e., gains or losses) of a derivative instrument is determined by whether it has been designated and qualifies as
part of a hedging relationship and, further, by the type of hedging relationship. For those derivative instruments
that are designated and qualify as hedging instruments, the Corporation designates the hedging instrument, based
upon the exposure being hedged, as either a fair value hedge or a cash flow hedge. For derivative instruments
designated and qualifying as fair value hedges (i.e., hedging the exposure to changes in the fair value of an asset
or a liability or an identified portion thereof that is attributable to a particular risk), the gain or loss on the
derivative instrument, as well as the offsetting loss or gain on the hedged item attributable to the hedged risk, are
recognized in current earnings during the period of the change in fair values. For derivative instruments that are
designated and qualify as cash flow hedges (i.e., hedging the exposure to variability in expected future cash flows
that is attributable to a particular risk), the effective portion of the gain or loss on the derivative instrument is
reported as a component of other comprehensive income and reclassified into earnings in the same period or
periods during which the hedged transaction affects earnings. The remaining gain or loss on the derivative
instrument in excess of the cumulative change in the present value of future cash flows of the hedged item (i.e.,
the ineffective portion), if any, is recognized in current earnings during the period of change. For derivative
instruments not designated as hedging instruments, the gain or loss is recognized in current earnings during the
period of change.

For derivatives designated as hedging instruments at inception, the Corporation uses either the short-cut
method or applies dollar offset or statistical regression analysis to assess effectiveness. The short-cut method was
used for certain fair value hedges of medium- and long-term debt issued prior to 2006. This method allows for
the assumption of zero hedge ineffectiveness and eliminates the requirement to further assess hedge effectiveness
on these transactions. For hedge relationships to which the Corporation does not apply the short-cut method,
either the dollar offset or statistical regression analysis is used at inception and for each reporting period
thereafter to assess whether the derivative used has been and is expected to be highly effective in offsetting
changes in the fair value or cash flows of the hedged item. All components of each derivative instrument’s gain
or loss are included in the assessment of hedge effectiveness. Net hedge ineffectiveness is recorded in “other
noninterest income” on the consolidated statements of income.

Further information on the Corporation’s derivative instruments and hedging activities is included in

Note 9.

Financial Guarantees

Certain guarantee contracts or

to
December 31, 2002, that contingently require the Corporation, as guarantor, to make payments to the guaranteed

issued or modified subsequent

indemnification agreements

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

party are initially measured at fair value and included in “accrued expenses and other liabilities” on the
consolidated balance sheets. The subsequent accounting for the liability depends on the nature of the underlying
guarantee. The release from risk is accounted for under a particular guarantee when the guarantee expires or is
settled, or by a systematic and rational amortization method. Further information on the Corporation’s
obligations under guarantees is included in Note 9.

Share-Based Compensation

The Corporation recognizes share-based compensation expense using the straight-line method over the
requisite service period for all stock awards, including those with graded vesting. The requisite service period is
the period an employee is required to provide service in order to vest in the award, which cannot extend beyond
the retirement-eligible date (the date at which the employee is no longer required to perform any service to
receive the share-based compensation).

Further information on the Corporation’s share-based compensation plans is included in Note 17.

Defined Benefit Pension and Other Postretirement Costs

Defined benefit pension costs are charged to “employee benefits” expense on the consolidated statements
of income and are funded consistent with the requirements of federal laws and regulations. Inherent in the
determination of defined benefit pension costs are assumptions concerning future events that will affect the
amount and timing of required benefit payments under the plans. These assumptions include demographic
assumptions such as retirement age and mortality, a compensation rate increase, a discount rate used to determine
the current benefit obligation and a long-term expected rate of return on plan assets. Net periodic defined benefit
pension expense includes service cost, interest cost based on the assumed discount rate, an expected return on
plan assets based on an actuarially derived market-related value of assets, amortization of prior service cost and
amortization of net actuarial gains or losses. The market-related value of plan assets is determined by amortizing
the current year’s investment gains and losses (the actual investment return net of the expected investment return)
over 5 years. The amortization adjustment cannot exceed 10 percent of the fair value of assets. Prior service costs
include the impact of plan amendments on the liabilities and are amortized over the future service periods of
active employees expected to receive benefits under the plan. Actuarial gains and losses result from experience
different from that assumed and from changes in assumptions (excluding asset gains and losses not yet reflected
in market-related value). Amortization of actuarial gains and losses is included as a component of net periodic
defined benefit pension cost for a year if the actuarial net gain or loss exceeds 10 percent of the greater of the
projected benefit obligation or the market-related value of plan assets. If amortization is required, the excess is
amortized over the average remaining service period of participating employees expected to receive benefits
under the plan.

Postretirement benefits are recognized in “employee benefits” expense on the consolidated statements of
income during the average remaining service period of participating employees expected to receive benefits
under the plan or the average remaining future lifetime of retired participants currently receiving benefits under
the plan.

For further information regarding the Corporation’s defined benefit pension and other postretirement

plans, refer to Note 18.

Income Taxes

The provision for income taxes is based on amounts reported in the consolidated statements of income
(after deducting non-taxable items, principally income on bank-owned life insurance, and deducting tax credits
related to investments in low income housing partnerships) and includes deferred income taxes on temporary
differences between the income tax basis and financial accounting basis of assets and liabilities. Deferred tax
assets are evaluated for realization based on available evidence of loss carry-back capacity, future reversals of

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

existing taxable temporary differences, and assumptions made regarding future events. A valuation allowance is
provided when it is more-likely-than-not that some portion of the deferred tax asset will not be realized. The
provision for income taxes assigned to discontinued operations is based on statutory rates, adjusted for permanent
differences generated by those operations.

The Corporation classifies interest and penalties on income tax liabilities in the “provision for income

taxes” on the consolidated statements of income.

Discontinued Operations

Components of the Corporation that have been or will be disposed of by sale, where the Corporation does
not have a significant continuing involvement
in the operations after the disposal, are accounted for as
discontinued operations in all periods presented if significant to the consolidated financial statements. For further
information on discontinued operations, refer to Note 25.

Earnings Per Share

Basic income (loss) from continuing operations per common share and net income (loss) per common
share are calculated using the two-class method. The two-class method is an earnings allocation formula that
determines earnings per share for each share of common stock and participating securities according to dividends
declared (distributed earnings) and participation rights in undistributed earnings. Distributed and undistributed
earnings are allocated between common and participating security shareholders based on their respective rights to
receive dividends. Unvested share-based payment awards that contain nonforfeitable rights to dividends or
dividend equivalents are considered participating securities (i.e., nonvested restricted stock). Undistributed net
losses are not allocated to nonvested restricted shareholders, as these shareholders do not have a contractual
obligation to fund the losses incurred by the Corporation. Income (loss) from continuing operations attributable
to common shares and net income (loss) attributable to common shares are then divided by the weighted-average
number of common shares outstanding during the period.

Diluted income (loss) from continuing operations per common share and net income (loss) per common
share consider common stock issuable under the assumed exercise of stock options granted under the
Corporation’s stock plans and warrants. Diluted income (loss) from continuing operations attributable to
common shares and net income (loss) attributable to common shares are then divided by the total of weighted-
average number of common shares and common stock equivalents outstanding during the period.

Statements of Cash Flows

Cash and cash equivalents are defined as those amounts included in “cash and due from banks”, “federal
funds sold and securities purchased under agreements to resell” and “interest-bearing deposits with banks” on the
consolidated balance sheets. Cash flows from discontinued operations are reported as separate line items within
cash flows from operating, investing and financing activities in the consolidated statements of cash flows.

Other Comprehensive Income (Loss)

The Corporation has elected to present information on comprehensive income in the consolidated

statements of changes in shareholders’ equity and in Note 15.

Pending Accounting Pronouncements

In July 2010, the FASB issued ASU No. 2010-20, “Receivables (Topic 310): Disclosures about the Credit
Quality of Financing Receivables and the Allowance for Credit Losses,” (ASU 2010-20). The Corporation
adopted a portion of ASU 2010-20, which requires enhanced disclosures about an entity’s credit quality of
financing receivables and the related allowance for credit losses, in the consolidated financial statements for the
year ended December 31, 2010. The Corporation will adopt the activity-related provisions of ASU 2010-20 in the
first quarter 2011. The disclosure requirements of ASU 2010-20 regarding troubled debt restructurings have been

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

delayed by the FASB. While the provisions of ASU 2010-20 require significant expansion of the Corporation’s
disclosures on the credit quality of financing receivables and the allowance for credit losses, the period-end
provisions did not have an impact on the Corporation’s financial condition and results of operations and the
Corporation does not expect the adoption of the remaining provisions of ASU 2010-20 to have a material effect
on the Corporation’s financial condition and results of operations.

NOTE 2 – PENDING ACQUISITION

On January 18, 2011, the Corporation announced a definitive agreement to acquire Sterling Bancshares,
Inc. (“Sterling”), a bank holding company headquartered in Houston, Texas, in a stock-for-stock transaction.
Sterling operates 57 banking centers located in Houston, San Antonio, Fort Worth and Dallas, Texas. At
December 31, 2010, Sterling had $5.2 billion in assets, including $2.8 billion of loans and $1.6 billion of
investment securities, and $4.6 billion of liabilities, including $4.3 billion of deposits. The merger requires the
approval of various regulatory agencies and Sterling’s shareholders. Assuming all approvals are obtained, the
merger is expected to be complete by the end of the second quarter 2011. Under the terms of the merger
agreement, Sterling common shareholders will receive 0.2365 shares of the Corporation’s common stock in
exchange for each share of Sterling common stock. At December 31, 2010, Sterling had approximately 102
million shares of common stock outstanding. On the date of the announcement, the Corporation estimated that
the transaction would result in approximately $745 million of goodwill at closing. The actual amount of goodwill
will be determined on the date of closing.

NOTE 3 – FAIR VALUE MEASUREMENTS

The Corporation utilizes fair value measurements to record fair value adjustments to certain assets and
liabilities and to determine fair value disclosures. The determination of fair values of financial instruments, often
requires the use of estimates. In cases where quoted market values in an active market are not available, the
Corporation uses present value techniques and other valuation methods to estimate the fair values of its financial
instruments. These valuation methods require considerable judgment and the resulting estimates of fair value can
be significantly affected by the assumptions made and methods used.

Fair value is an estimate of the exchange price that would be received to sell an asset or paid to transfer a
liability in an orderly transaction (i.e., not a forced transaction, such as a liquidation or distressed sale) between
market participants at the measurement date. However, the calculated fair value estimates in many instances
cannot be substantiated by comparison to independent markets and, in many cases, may not be realizable in a
current sale of the financial instrument.

Trading securities, investment securities available-for-sale, derivatives and deferred compensation plan
liabilities are recorded at fair value on a recurring basis. Additionally, from time to time, the Corporation may be
required to record other assets and liabilities at fair value on a nonrecurring basis, such as impaired loans, other
real estate (primarily foreclosed property), nonmarketable equity securities and certain other assets and liabilities.
These nonrecurring fair value adjustments typically involve write-downs of individual assets or application of
lower of cost or fair value accounting.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The Corporation categorizes assets and liabilities recorded at fair value into a three-level hierarchy, based
on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to
determine fair value. These levels are:

Level 1

Valuation is based upon quoted prices for identical instruments traded in active markets.

Level 2

Level 3

Valuation is based upon quoted prices for similar instruments in active markets, quoted prices
for identical or similar instruments in markets that are not active, and model-based valuation
techniques for which all significant assumptions are observable in the market.

Valuation is generated from model-based techniques that use at
least one significant
assumption not observable in the market. These unobservable assumptions reflect estimates of
assumptions that market participants would use in pricing the asset or liability. Valuation
techniques include use of option pricing models, discounted cash flow models and similar
techniques.

Following is a description of the valuation methodologies and key inputs used to measure financial assets
and liabilities recorded at fair value, as well as a description of the methods and significant assumptions used to
estimate fair value disclosures for financial instruments not recorded at fair value in their entirety on a recurring
basis. For financial assets and liabilities recorded at fair value, the description includes an indication of the level
of the fair value hierarchy in which the assets or liabilities are classified. Transfers of assets or liabilities between
levels of the fair value hierarchy are recognized at the beginning of the reporting period, when applicable.

Cash and due from banks, federal funds sold and securities purchased under agreements to resell, and
interest-bearing deposits with banks

Due to the short-term nature, the carrying amount of these instruments approximates the estimated fair

value.

Trading securities and associated deferred compensation plan liabilities

Securities held for trading purposes and associated deferred compensation plan liabilities are recorded at
fair value and included in “other short-term investments” and “accrued expenses and other liabilities,”
respectively, on the consolidated balance sheets. Level 1 securities held for trading purposes include assets
related to employee deferred compensation plans, which are invested in mutual funds, U.S. Treasury securities
that are traded by dealers or brokers in active over-the-counter markets and other securities traded on an active
exchange, such as the New York Stock Exchange. Deferred compensation plan liabilities represent the fair value
of the obligation to the employee, which corresponds to the fair value of the invested assets. Level 2 trading
securities include municipal bonds and mortgage-backed securities issued by U.S. government-sponsored entities
and corporate debt securities. Securities classified as Level 3 include securities in less liquid markets and
securities not rated by a credit agency. The methods used to value trading securities are the same as the methods
used to value investment securities available-for-sale, discussed below.

Loans held-for-sale

Loans held-for-sale, included in “other short-term investments” on the consolidated balance sheets, are
recorded at the lower of cost or fair value. The fair value of loans held-for-sale is based on what secondary
markets are currently offering for portfolios with similar characteristics. As such, the Corporation classifies loans
held-for-sale subjected to nonrecurring fair value adjustments as Level 2.

Investment securities available-for-sale

Investment securities available-for-sale are recorded at fair value on a recurring basis. Fair value
measurement is based upon quoted prices, if available. If quoted prices are not available or the market is deemed

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

to be inactive at the measurement date, an adjustment
to the quoted prices may be necessary. In some
circumstances, the Corporation may conclude that a change in valuation technique or the use of multiple
valuation techniques may be appropriate to estimate an instrument’s fair value. Level 1 securities include those
traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by
dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities include
residential mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored
enterprises, corporate debt securities and state and municipal securities. The fair value of Level 2 securities was
determined using quoted prices of securities with similar characteristics or pricing models based on observable
market data inputs, primarily interest rates, spreads and prepayment information. Securities classified as Level 3,
of which the substantial majority are auction-rate securities, represent securities in less liquid markets requiring
significant management assumptions when determining fair value. Due to the lack of a robust secondary auction-
rate securities market with active fair value indicators, fair value at December 31, 2010 and December 31, 2009
was determined using an income approach based on a discounted cash flow model utilizing two significant
assumptions: discount rate (including a liquidity risk premium) and workout period. The discount rate was
calculated using credit spreads of the underlying collateral or similar securities plus a liquidity risk premium. The
liquidity risk premium was based on observed industry auction-rate securities valuations by third parties and
incorporated the rate at which the various types of similar ARS had been redeemed or sold since acquisition in
2008. The workout period was based on an assessment of publicly available information on efforts to re-establish
functioning markets for these securities and the Corporation’s redemption experience. As of December 31, 2010,
approximately 50 percent of the aggregate ARS par value had been redeemed or sold since acquisition.

Loans

The Corporation does not record loans at fair value on a recurring basis. However, periodically, the
Corporation records nonrecurring adjustments to the carrying value of loans based on fair value measurements.
Loans for which it is probable that payment of interest or principal will not be made in accordance with the
contractual terms of the original loan agreement are considered impaired. Impaired loans are reported as
nonrecurring fair value measurements when an allowance is established based on the fair value of collateral.
When the fair value of the collateral is based on an observable market price or a current appraised value, the
Corporation classifies the impaired loan as nonrecurring Level 2. When management determines that the fair
value of the collateral requires additional adjustments, either as a result of non-current appraisal value or when
there is no observable market price, the Corporation classifies the impaired loan as nonrecurring Level 3.

Business loans consist of commercial, real estate construction, commercial mortgage, lease financing and
international loans. The estimated fair value for variable rate business loans that reprice frequently is based on
carrying values adjusted for estimated credit losses and other adjustments that would be expected to be made by a
market participant in an active market. The fair value for other business loans and retail loans are estimated using
a discounted cash flow model that employs interest rates currently offered on the loans, adjusted by an amount
for estimated credit losses and other adjustments that would be expected to be made by a market participant in an
active market. The rates take into account the expected yield curve, as well as an adjustment for prepayment risk,
when applicable.

Customers’ liability on acceptances outstanding and acceptances outstanding

The carrying amount of these instruments approximates the estimated fair value, due to their short-term

nature.

Derivative assets and derivative liabilities

Derivative instruments held or issued for risk management or customer-initiated activities are traded in
over-the-counter markets where quoted market prices are not readily available. Fair value for over-the-counter
derivative instruments is measured using internally developed models that use primarily market observable

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

inputs, such as yield curves and option volatilities. Included in the fair value of over-the-counter derivative
instruments are credit valuation adjustments reflecting counterparty credit risk and credit risk of the Corporation.
These adjustments are determined by applying a credit spread for the counterparty or the Corporation, as
appropriate, to the total expected exposure of the derivative after considering collateral and other master netting
arrangements. These adjustments, which are considered Level 3 inputs, are based on estimates of current credit
spreads to evaluate the likelihood of default. The Corporation assessed the significance of the impact of the credit
valuation adjustments on the overall valuation of its derivative positions and determined that the credit valuation
adjustments were not significant to the overall valuation of its derivatives. As a result, the Corporation classified
its over-the-counter derivative valuations in Level 2 of the fair value hierarchy. Examples of Level 2 derivative
instruments are interest rate swaps and energy derivative and foreign exchange contracts.

The Corporation also holds a portfolio of warrants for generally nonmarketable equity securities. These
warrants are primarily from high technology, non-public companies obtained as part of the loan origination
process. Warrants which contain a net exercise provision or a non-contingent put right embedded in the warrant
agreement are accounted for as derivatives and recorded at fair value using a Black-Scholes valuation model with
five inputs: risk-free rate, expected life, volatility, exercise price, and the per share market value of the
underlying company. The Corporation classifies warrants accounted for as derivatives as recurring Level 3.

The Corporation holds a derivative contract associated with the 2008 sale of its remaining ownership of
Visa Inc. (Visa) Class B shares. Under the terms of the derivative contract, the Corporation will compensate the
counterparty primarily for dilutive adjustments made to the conversion factor of the Visa Class B to Class A
shares based on the ultimate outcome of litigation involving Visa. Conversely,
the Corporation will be
compensated by the counterparty for any increase in the conversion factor from anti-dilutive adjustments. The
fair value of the derivative contract was based on unobservable inputs consisting of management’s estimate of
the litigation outcome, timing of litigation settlements and payments related to the derivative. The Corporation
classifies the derivative liability as recurring Level 3.

Nonmarketable equity securities

The Corporation has a portfolio of indirect (through funds) private equity and venture capital investments.
These funds generally cannot be redeemed and the majority are not readily marketable. Distributions from these
funds are received by the Corporation as a result of the liquidation of underlying investments of the funds and/or
as income distributions. It is estimated that the underlying assets of the funds will be liquidated over a period of
up to 15 years. The value of these investments is at risk to changes in equity markets, general economic
conditions and a variety of other factors. The investments are accounted for on the cost or equity method and are
individually reviewed for impairment on a quarterly basis by comparing the carrying value to the estimated fair
value. These investments may be carried at fair value on a nonrecurring basis when they are deemed to be
impaired and written down to fair value. For such investments, fair value measurement guidance permits the use
of net asset value, provided the net asset value is calculated by the fund in compliance with fair value
measurement guidance applicable to investment companies. Where there is not a readily determinable fair value,
the Corporation estimates fair value for indirect private equity and venture capital investments based on the
Corporation’s percentage ownership in the net asset value of the entire fund, as reported by the fund, after
indication that the fund adheres to applicable fair value measurement guidance. For those funds where the net
asset value is not reported by the fund, the Corporation derives the fair value of the fund by estimating the fair
value of each underlying investment in the fund. In addition to using qualitative information about each
underlying investment, as provided by the fund, the Corporation gives consideration to information pertinent to
the specific nature of the debt or equity investment, such as relevant market conditions, offering prices, operating
results, financial conditions, exit strategy and other qualitative information, as available. The lack of an
independent source to validate fair value estimates, including the impact of future capital calls and transfer
restrictions, is an inherent limitation in the valuation process.

89

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The Corporation also holds restricted equity investments, primarily Federal Home Loan Bank (FHLB)
and Federal Reserve Bank (FRB) stock. Restricted equity securities are not readily marketable and are recorded
at cost (par value) and evaluated for impairment based on the ultimate recoverability of the par value. No
significant observable market data for these instruments is available. The Corporation considers the profitability
and asset quality of the issuer, dividend payment history and recent redemption experience, when determining
the ultimate recoverability of the par value. The Corporation’s investment in FHLB stock totaled $128 million
and $271 million at December 31, 2010 and 2009, respectively, and its investment in FRB stock totaled $59
million at both December 31, 2010 and 2009. The Corporation believes its investments in FHLB and FRB stock
are ultimately recoverable at par.

The Corporation classifies nonmarketable equity securities subjected to nonrecurring fair value

adjustments as Level 3.

Other real estate

Other real estate is included in “accrued income and other assets” on the consolidated balance sheets and
includes primarily foreclosed property. Foreclosed property is initially recorded at the lower of the loan balance
or fair value, less costs to sell, at the date of foreclosure, establishing a new cost basis. Subsequently, foreclosed
property is carried at the lower of cost or fair value, less costs to sell. Other real estate may be carried at fair
value on a nonrecurring basis when fair value is less than cost. Fair value is based upon independent market
prices, appraised value or management’s estimate of the value. Foreclosed property carried at fair value based on
an observable market price or a current appraised value is classified by the Corporation as nonrecurring Level 2.
When management determines that the fair value of the foreclosed property requires additional adjustments,
either as a result of a non-current appraisal or when there is no observable market price, the Corporation
classifies the foreclosed property as nonrecurring Level 3.

Loan servicing rights

Loan servicing rights, included in “accrued income and other assets” on the consolidated balance sheets,
are subject to impairment testing. A valuation model is used for impairment testing, which utilizes a discounted
cash flow analysis using interest rates and prepayment speed assumptions currently quoted for comparable
instruments and a discount rate determined by management. If the valuation model reflects a value less than the
carrying value, loan servicing rights are adjusted to fair value through a valuation allowance as determined by the
model. As such, the Corporation classifies loan servicing rights subjected to nonrecurring fair value adjustments
as Level 3.

Deposit liabilities

The estimated fair value of checking, savings and certain money market deposit accounts is represented
by the amounts payable on demand. The estimated fair value of term deposits is calculated by discounting the
scheduled cash flows using the period-end rates offered on these instruments.

Short-term borrowings

The carrying amount of federal funds purchased, securities sold under agreements to repurchase and other

short-term borrowings approximates the estimated fair value.

Medium- and long-term debt

The carrying value of variable-rate FHLB advances approximates the estimated fair value. The estimated
fair value of the Corporation’s remaining variable- and fixed-rate medium- and long-term debt is based on quoted
market values. If quoted market values are not available, the estimated fair value is based on the market values of
debt with similar characteristics.

90

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Credit-related financial instruments

The estimated fair value of unused commitments to extend credit and standby and commercial letters of
credit is represented by the estimated cost to terminate or otherwise settle the obligations with the counterparties.
This amount is approximated by the fees currently charged to enter into similar arrangements, considering the
remaining terms of the agreements and any changes in the credit quality of counterparties since the agreements
were executed. This estimate of fair value does not take into account the significant value of the customer
relationships and the future earnings potential involved in such arrangements as the Corporation does not believe
that it would be practicable to estimate a representational fair value for these items.

ASSETS AND LIABILITIES RECORDED AT FAIR VALUE ON A RECURRING BASIS

The following tables present the recorded amount of assets and liabilities measured at fair value on a

recurring basis as of December 31, 2010 and 2009.

(in millions)
December 31, 2010
Trading securities:

Deferred compensation plan assets
Residential mortgage-backed securities (a)
Other government-sponsored enterprise securities
State and municipal securities
Corporate debt securities
Other securities

Total trading securities

Investment securities available-for-sale:

U.S. Treasury and other U.S. government agency securities
Residential mortgage-backed securities (a)
State and municipal securities (b)
Corporate debt securities:

Auction-rate debt securities
Other corporate debt securities
Equity and other non-debt securities:
Auction-rate preferred securities
Money market and other mutual funds

Total investment securities available-for-sale

Derivative assets (c):

Interest rate contracts
Energy derivative contracts
Foreign exchange contracts
Warrants

Total derivative assets

Total assets at fair value

Derivative liabilities (d):
Interest rate contracts
Energy derivative contracts
Foreign exchange contracts
Other

Total derivative liabilities

Deferred compensation plan liabilities (d)
Total liabilities at fair value

Total

Level 1

Level 2

Level 3

$

$

$

$

86
7
1
19
4
1
118

131
6,709
39

1
26

570
84
7,560

542
103
51
7
703
8,381

249
103
48
1
401

86
487

$

$

$

$

86
-
-
-
-
-
86

131
-
-

-
-

-
84
215

-
-
-
-
-
301

-
-
-
-
-

86
86

$

$

$

$

$

-
7
1
19
4
-
31

-
6,709
-

-
25

-
-
6,734

542
103
51
-
696
7,461

249
103
48
-
400

-
400

$

$

$

-
-
-
-
-
1
1

-
-
39

1
1

570
-
611

-
-
-
7
7
619

-
-
-
1
1

-
1

(a) Residential mortgage-backed securities issued and/or guaranteed by FNMA, FHLMC or GNMA.
(b) Primarily auction-rate securities.
(c) Recorded in “accrued income and other assets” on the consolidated balance sheets.
(d) Recorded in “accrued expenses and other liabilities” on the consolidated balance sheets.

91

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

(in millions)

December 31, 2009
Trading securities:

Deferred compensation plan assets
Residential mortgage-backed securities (a)
State and municipal securities
Corporate debt securities

Total trading securities

Investment securities available-for-sale:

U.S. Treasury and other U.S. government agency

securities

Residential mortgage-backed securities (a)
State and municipal securities (b)
Corporate debt securities:

Auction-rate debt securities
Other corporate debt securities
Equity and other non-debt securities:
Auction-rate preferred securities
Money market and other mutual funds

Total investment securities available-for-sale

Derivative assets (c):

Interest rate contracts
Energy derivative contracts
Foreign exchange contracts
Warrants

Total derivative assets

Total assets at fair value

Derivative liabilities (d):
Interest rate contracts
Energy derivative contracts
Foreign exchange contracts

Total derivative liabilities

Deferred compensation plan liabilities (d)

Total liabilities at fair value

$

$

$

Total

Level 1

Level 2

Level 3

$

86
3
15
3

107

103
6,261
47

150
50

706
99

7,416

492
137
35
7

671

86
-
-
-

86

103
-
-

-
-

-
99

202

-
-
-
-

-

$

$

-
3
15
3

21

-
6,261
1

-
43

-
-

6,305

492
137
35
-

664

-
-
-
-

-

-
-
46

150
7

706
-

909

-
-
-
7

7

8,194

$

288

$

6,990

$

916

$

240
136
34

410

86

$

496

$

-
-
-

-

86

86

$

$

240
136
34

410

-

$

410

$

-
-
-

-

-

-

(a) Residential mortgage-backed securities issued and/or guaranteed by FNMA, FHLMC or GNMA.
(b) Primarily auction-rate securities.
(c) Recorded in “accrued income and other assets” on the consolidated balance sheets.
(d) Recorded in “accrued expenses and other liabilities” on the consolidated balance sheets.

There were no significant transfers of assets or liabilities recorded at fair value on a recurring basis into or

out of Level 1 and Level 2 fair value measurements during the years ended December 31, 2010 and 2009.

92

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following table summarizes the changes in Level 3 assets and liabilities measured at fair value on a

recurring basis for the years ended December 31, 2010 and 2009.

Net Realized/Unrealized Gains (Losses)

Balance at
Beginning
of Period

Recorded in Earnings

Realized Unrealized

Recorded in
Other
Comprehensive
Income (Pre-tax) Purchases

Sales

Settlements

Balance at
End of Period

(in millions)

Year ended

December 31, 2010
Trading securities:

State and municipal

securities
Other securities

Total trading securities

Investment securities
available-for-sale:
State and municipal
securities (a)
Auction-rate debt

securities

Other corporate debt

securities

Auction-rate preferred

securities
Total investment
securities
available-for-sale

Derivative assets:

Warrants

Derivative liabilities:

Other

Year ended

December 31, 2009
Trading securities:

State and municipal

securities

Corporate debt securities
Total trading securities

$

Investment securities
available-for-sale:
State and municipal
securities (a)
Auction-rate debt

securities

Other corporate debt

securities

Auction-rate preferred

securities
Total investment
securities
available-for-sale

Derivative assets:

Warrants

Derivative liabilities:

Other

(a) Primarily auction-rate securities

$

$

-
-
-

- $
-
-

- $
1
1

46

150

7

706

909

7

-

29
5
34

65

147

5

936

1,153

8

5

(1)

3

27

6

35

2

-

-

-

-

-

1

(4)

(1)

$

- $
-
-

- $
-
-

-

-

-

14

14

3

(2)

-

-

2

-

2

3

-

$

$

-
-
-

(2)

5

-

(21)

(18)

-

-

-
-
-

(2)

5

-

13

16

-

-

$

3 $
-
3

(3)
-
(3)

- $
-
-

-

-

-

-

-

1

-

(4)

(157)

-

(121)

(282)

(4)

-

-

-

(33)

-

(33)

-

(4)

$

- $
-
-

(29)
(5)
(34)

- $
-
-

-

-

-

-

-

-

-

(17)

(2)

-

(257)

(276)

(7)

-

-

-

-

-

-

-

(7)

-
1
1

39

1

1

570

611

7

1

-
-
-

46

150

7

706

909

7

-

There were no transfers of assets or liabilities recorded at fair value on a recurring basis into or out of

Level 3 fair value measurements during the years ended December 31, 2010 and 2009.

93

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following table presents the income statement classification of realized and unrealized gains and
losses due to changes in fair value recorded in earnings for the years ended December 31, 2010 and 2009 for
recurring Level 3 assets and liabilities, as shown in the previous table.

(in millions)

Realized Unrealized Realized Unrealized Realized

Unrealized

Realized

Unrealized

Net Securities
Gains (Losses)

Other Noninterest
Income

Discontinued Operations

Total

Year ended December 31, 2010

Trading securities:
Other securities
Investment securities
available-for-sale:
State and municipal
securities (a)

Auction-rate debt securities
Other corporate debt

securities

Auction-rate preferred

securities

Total investment securities

available-for-sale

Derivative assets:

Warrants

Derivative liabilities:

Other

Year ended December 31, 2009

Investment securities
available-for-sale:
Other corporate debt

securities

Auction-rate preferred

securities

Total investment securities

available-for-sale

Derivative assets:

Warrants

Derivative liabilities:

Other

$

-

$

(1)
3

-

6

8

-

-

-
-

-

-

-

-

(4)

(1)

$

-

$

14

14

-

(2)

-

-

-

-

-

(a) Primarily auction-rate securities.

$

$

-

-
-

-

-

-

2

-

-

-

-

3

-

$

1

$

-
-

-

-

-

1

-

-

-

-

3

-

$

$

$

$

-

-
-

27

-

27

-

-

-

-

-

-

-

-

-
-

-

-

-

-

-

2

-

2

-

-

$

-

$

1

(1)
3

27

6

35

2

(4)

$

-

$

14

14

3

(2)

-
-

-

-

-

1

(1)

2

-

2

3

-

94

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

ASSETS AND LIABILITIES RECORDED AT FAIR VALUE ON A NONRECURRING BASIS

The Corporation may be required, from time to time, to record certain assets and liabilities at fair value on
a nonrecurring basis. These include assets that are recorded at the lower of cost or fair value that were recognized
at fair value below cost at the end of the period. Assets and liabilities recorded at fair value on a nonrecurring
basis are presented in the following table.

(in millions)

December 31, 2010

Loans held-for-sale:

Residential mortgage

Loans:

Commercial
Real estate construction
Commercial mortgage
Residential mortgage
Lease financing
International

Total loans (a)

Nonmarketable equity securities (b)
Other real estate (c)
Loan servicing rights
Total assets at fair value
Total liabilities at fair value

December 31, 2009

Loans held-for-sale:

Residential mortgage

Loans:

Commercial
Real estate construction
Commercial mortgage
Residential mortgage
Consumer
Lease financing
International

Total loans (a)

Nonmarketable equity securities (b)
Other real estate (c)
Loan servicing rights
Total assets at fair value
Total liabilities at fair value

Total

Level 2

Level 3

$

6

$

6

$

200
247
398
-
7
2
854

9
33
5
907
-

$
$

-
-
-
-
-
-
-

-
-
-
6
-

$
$

6

$

6

$

191
474
231
-
-
14
29
939

8
31
7
991
-

$
$

-
-
-
-
-
-
-
-

-
-
-
6
-

$
$

$
$

$

$
$

-

200
247
398
-
7
2
854

9
33
5
901
-

-

191
474
231
-
-
14
29
939

8
31
7
985
-

(a) The Corporation recorded $398 million and $576 million in fair value losses on impaired loans (included in “provision for
loan losses” on the consolidated statements of income) during the years ended December 31, 2010 and 2009, respectively,
based on the estimated fair value of the underlying collateral.

(b) The Corporation recorded $6 million and $13 million in fair value losses related to write-downs on nonmarketable equity
securities (included in “other noninterest income” on the consolidated statements of income) during the years ended
December 31, 2010 and 2009, respectively, based on the estimated fair value of the funds. At December 31, 2010 and
2009, commitments to fund additional investments in nonmarketable equity securities recorded at fair value on a
nonrecurring basis totaled approximately $2 million and $3 million, respectively.

(c) Represents the fair value of other real estate written down subsequent to initial acquisition. The Corporation recorded $23
million and $34 million in fair value losses related to write-downs of other real estate, based on the estimated fair value of
the property, and recognized a net gain of $7 million and a net loss of $2 million on sales of other real estate during the
years ended December 31, 2010 and 2009, respectively, (included in “other real estate expense” on the consolidated
statements of income).

95

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

ESTIMATED FAIR VALUES OF FINANCIAL INSTRUMENTS NOT RECORDED AT FAIR VALUE
IN THEIR ENTIRETY ON A RECURRING BASIS

The Corporation typically holds the majority of its financial instruments until maturity and thus does not
expect to realize many of the estimated fair value amounts disclosed. The disclosures also do not include
estimated fair value amounts for items that are not defined as financial instruments, but which have significant
value. These include such items as core deposit intangibles, the future earnings potential of significant customer
relationships and the value of trust operations and other fee generating businesses. The Corporation believes the
imprecision of an estimate could be significant.

The carrying amount and estimated fair value of financial instruments not recorded at fair value in their

entirety on a recurring basis on the Corporation’s consolidated balance sheets are as follows:

(in millions)

Assets

December 31,

2010

2009

Carrying
Amount

Estimated
Fair Value

Carrying
Amount

Estimated
Fair Value

Cash and due from banks
Interest-bearing deposits with banks

Loans held-for-sale

$

$

668
1,415

$

668
1,415

$

774
4,843

23

23

30

774
4,843

30

Total loans, net of allowance for loan losses (a)

39,335

39,212

41,176

41,098

Customers’ liability on acceptances outstanding
Nonmarketable equity securities (b)
Loan servicing rights (c)

Liabilities

Demand deposits (noninterest-bearing)
Interest-bearing deposits

Total deposits

Short-term borrowings
Acceptances outstanding
Medium- and long-term debt

9
47
5

15,538
24,933

40,471

130
9
6,138

9
77
5

15,538
24,945

40,483

130
9
6,008

11
57
7

15,871
23,794

39,665

462
11
11,060

11
61
7

15,871
23,814

39,685

462
11
10,723

Credit-related financial instruments

(99)

(99)

(89)

(89)

(a) Included $854 million and $939 million of impaired loans recorded at fair value on a nonrecurring basis at

December 31, 2010 and 2009, respectively.

(b) Included $9 million and $8 million of nonmarketable equity securities recorded at fair value on a

nonrecurring basis at December 31, 2010 and 2009, respectively.

(c) Included $5 million and $7 million of loan servicing rights recorded at fair value on a nonrecurring basis at

December 31, 2010 and 2009, respectively.

96

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 4 - INVESTMENT SECURITIES

A summary of the Corporation’s investment securities available-for-sale follows:

(in millions)

December 31, 2010

U.S. Treasury and other U.S. government agency

securities

Residential mortgage-backed securities (a)
State and municipal securities (b)
Corporate debt securities:

Auction-rate debt securities
Other corporate debt securities
Equity and other non-debt securities:
Auction-rate preferred securities
Money market and other mutual funds

Total investment securities available-for-sale

December 31, 2009

U.S. Treasury and other U.S. government agency

securities

Residential mortgage-backed securities (a)
State and municipal securities (b)
Corporate debt securities:

Auction-rate debt securities
Other corporate debt securities
Equity and other non-debt securities:
Auction-rate preferred securities
Money market and other mutual funds

Amortized
Cost

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Fair Value

$

$

$

$

131
6,653
46

1
26

597
84

$

-
95
-

-
-

3
-

7,538

$

98

$

$

103
6,228
51

156
50

711
99

$

-
51
-

-
-

8
-

-
39
7

-
-

30
-

76

-
18
4

6
-

13
-

41

$

$

$

131
6,709
39

1
26

570
84

7,560

103
6,261
47

150
50

706
99

$

7,416

Total investment securities available-for-sale

$

7,398

$

59

$

(a) Residential mortgage-backed securities issued and/or guaranteed by FNMA, FHLMC or GNMA.
(b) Primarily auction-rate securities.

97

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

A summary of the Corporation’s investment securities available-for-sale in an unrealized loss position as

of December 31, 2010 and 2009 follows:

(in millions)

December 31, 2010

Residential mortgage-backed

securities (a)
State and municipal
securities (b)

Corporate debt securities:

Auction-rate debt

securities

Equity and other non-debt

securities:
Auction-rate preferred

securities

Total impaired securities

December 31, 2009

Residential mortgage-backed

securities (a)
State and municipal
securities (b)

Corporate debt securities:

Auction-rate debt

securities

Equity and other non-debt

securities:
Auction-rate preferred

securities

Total impaired securities

$

Less than 12 months

Fair
Value

Unrealized
Losses

Impaired
12 months or more
Fair
Value

Unrealized
Losses

Total

Fair
Value

Unrealized
Losses

$

1,702

$

39

$

-

$

-

-

-

-

38

1

-

7

-

38

1

$

1,702 $

39

$

$

-
1,702

$

-
39

$

436
475

$

30
37

$

436
2,177 $

1,609

$

18

$

-

$

-

150

-

6

46

-

510
2,269 $

13
37

$

-
46

$

-

4

-

-
4

$

1,609

$

46

150

510
2,315

$

$

7

-

30
76

18

4

6

13
41

(a) Residential mortgage-backed securities issued and/or guaranteed by FNMA, FHLMC or GNMA.
(b) Primarily auction-rate securities.

As of December 31, 2010, 93 percent of the Corporation’s auction-rate portfolio was either rated Aaa/

AAA by the credit rating agencies (88 percent) or adequately collateralized (five percent).

At December 31, 2010, the Corporation had 380 securities in an unrealized loss position with no credit
impairment, including 310 auction-rate preferred securities, 2 auction-rate debt securities, 30 state and municipal
auction-rate securities, and 38 residential mortgage-backed securities. The unrealized losses for these securities
resulted from changes in market interest rates and liquidity. The Corporation ultimately expects full collection of
the carrying amount of these securities, does not intend to sell the securities in an unrealized loss position, and it
is not more-likely-than-not that the Corporation will be required to sell the securities in an unrealized loss
position prior to recovery of amortized cost. The Corporation does not consider these securities to be other-than-
temporarily impaired at December 31, 2010.

98

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Sales, calls and write-downs of investment securities available-for-sale resulted in the following gains and
losses, recorded in “net securities gains” on the consolidated statements of income, computed based on the
adjusted cost of the specific security.

(in millions)
Years Ended December 31

Securities gains
Securities losses

Total net securities gains

2010

2009

2008

$

$

13
(10)

3

$

$

245
(2)

243

$

$

68
(1)

67

The following table summarizes the amortized cost and fair values of debt securities by contractual
maturity. Securities with multiple maturity dates are classified in the period of final maturity. Expected maturities
will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or
without call or prepayment penalties.

(in millions)
December 31, 2010

Contractual maturity
Within one year
After one year through five years
After five years through ten years
After ten years

Subtotal

Equity and other nondebt securities:
Auction-rate preferred securities
Money market and other mutual funds

Amortized
Cost

Fair
Value

$

$

157
229
136
6,335

6,857

597
84

157
239
139
6,371

6,906

570
84

Total investment securities available-for-sale

$

7,538

$

7,560

Included in the contractual maturity distribution in the table above were auction-rate securities with a
total amortized cost and fair value of $45 million and $39 million, respectively. Auction-rate securities are long-
term, floating rate instruments for which interest rates are reset at periodic auctions. At each successful auction,
the Corporation has the option to sell the security at par value. Additionally, the issuers of auction-rate securities
generally have the right to redeem or refinance the debt. As a result, the expected life of auction-rate securities
may differ significantly from the contractual life. Also included in the table above were residential mortgage-
backed securities with a total amortized cost and fair value of $6,653 million and $6,709 million, respectively.
The actual cash flows of mortgage-backed securities may differ from contractual maturity as the borrowers of the
underlying loans may exercise prepayment options.

At December 31, 2010, investment securities with a carrying value of $1.9 billion were pledged where
permitted or required by law to secure $1.6 billion of liabilities, primarily public and other deposits of state and
local government agencies and derivative instruments.

99

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following table summarizes auction-rate securities activity for the years ended December 31, 2010

and 2009.

(in millions)

Balance at January 1, 2009

Called or redeemed subsequent to repurchase
Net securities gains
Unrealized gains (b)

Balance at December 31, 2009

Called, redeemed or sold subsequent to repurchase
Net securities gains
Unrealized losses (b)

Balance at December 31, 2010

Par Value

Fair
Value (a)

$

$

$

$

$

1,261
(276)

985
(308)

677

$

1,147
(276)
14
16

901
(282)
8
(18)

609

(a) Recorded in “investment securities available-for-sale” on the consolidated balance sheets.
(b) Changes in fair value recognized in accumulated other comprehensive income (loss).

In January 2011, $67 million par value of auction-rate securities were redeemed at par, including $53
million of auction-rate preferred securities and $14 million state and municipal auction-rate securities.
Additionally, the Corporation received notices of redemption for an additional $62 million par value of auction-
rate preferred securities.

100

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 5 – CREDIT QUALITY AND ALLOWANCE FOR CREDIT LOSSES

The following table summarizes nonperforming assets, which consist of nonaccrual loans, reduced-rate

loans and real estate acquired through foreclosure.

Nonaccrual and reduced-rate loans are included in the corresponding loan line items and real estate
acquired through foreclosure is included in “accrued income and other assets” on the consolidated balance sheets.

(in millions)
December 31

Nonaccrual loans:
Business loans:
Commercial
Real estate construction:

Commercial Real Estate business line (a)
Other business lines (b)

Total real estate construction

Commercial mortgage:

Commercial Real Estate business line (a)
Other business lines (b)

Total commercial mortgage

Lease financing
International

Total nonaccrual business loans

Retail loans:

Residential mortgage
Consumer:

Home equity
Other consumer

Total consumer

Total nonaccrual retail loans

Total nonaccrual loans

Reduced-rate loans (c)

Total nonperforming loans
Foreclosed property

Total nonperforming assets

2010

2009

$

252

$

259
4

263

181
302

483
7
2

238

507
4

511

127
192

319
13
22

1,007

1,103

55

5
13

18

73

1,080
43

1,123
112

$

1,235

$

50

8
4

12

62

1,165
16

1,181
111

1,292

(a) Primarily loans to real estate investors and developers.
(b) Primarily loans secured by owner-occupied real estate.
(c) Includes $26 million in business loans and $17 million in retail loans as of December 31, 2010.

101

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following presents an aging analysis of loans.

(in millions)
December 31, 2010

Business loans:
Commercial
Real estate construction:

Commercial Real Estate business

line (a)

Other business lines (b)

Total real estate construction

Commercial mortgage:

Commercial Real Estate business

line (a)

Other business lines (b)

Total commercial mortgage

Lease financing
International

Total business loans

Retail loans:

Residential mortgage
Consumer:

Home equity
Other consumer

Total consumer

Total retail loans

Total loans

Loans Past Due and Still Accruing

30-59 Days 60-89 Days

90 Days
or More

Total

Nonaccrual
Loans

Current
Loans

Total Loans

$

84 $

28 $

3 $

115 $

252 $

21,778 $

22,145

27
2

29

8
28

36
-
1

150

33

11
4

15

48

$

198 $

-
-

-

1
25

26
-
-

54

23

4
2

6

29

83 $

17
5

22

-
16

16
-
-

41

7

10
4

14

21

44
7

51

9
69

78
-
1

259
4

263

181
302

483
7
2

1,523
416

1,939

1,747
7,459

9,206
1,002
1,129

1,826
427

2,253

1,937
7,830

9,767
1,009
1,132

245

1,007

35,054

36,306

63

25
10

35

98

55

5
13

18

73

1,501

1,674
584

2,258

3,759

1,619

1,704
607

2,311

3,930

62 $

343 $

1,080 $

38,813 $

40,236

(a) Primarily loans to real estate investors and developers.
(b) Primarily loans secured by owner-occupied real estate.

The following table presents information regarding total impaired loans.

(in millions)

Business Loans Retail Loans

Total

December 31, 2009

December 31, 2008

December 31, 2010

Loans individually evaluated for

impairment

Loans collectively evaluated for

impairment
Total loans evaluated for

impairment

Allowance for loans individually

evaluated for impairment
Allowance for loans collectively
evaluated for impairment
Total allowance for loan losses
Gross interest income that would
have been recorded had the
nonaccrual and reduced-rate
loans performed in accordance
with original terms

Interest income recognized

$

$

$

$

$
$

927

$

47

$

974

$

986

$

39,262

40,236

197

704
901

87
18

$

$

$

$
$

41,175

42,161

193

792
985

109
21

$

$

$

$
$

35,379

36,306

192

647
839

84
17

$

$

$

$
$

3,883

3,930

5

57
62

3
1

$

$

$

$
$

102

803

49,702

50,505

177

593
770

98
24

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following table presents additional information regarding individually evaluated impaired loans.

Recorded Investment In:
Impaired
Loans
with
Related
Allowance

Impaired
Loans with
No Related
Allowance

Total
Impaired
Loans

Unpaid
Principal
Balance

Associated
Valuation
Allowance

Average
Impaired
Loans for
the Year

Interest
Income
Recognized

$

9 $

237

$

246

$

398

$

55

$

224

$

-
-

-

-
-

-
-
-
9

8

-
-
8

249
-

249

178
245

423
7
2
918

29

10
10
39

249
-

249

178
245

423
7
2
927

37

10
10
47

400
-

400

282
325

607
15
2
1,422

41

14
14
55

51
-

51

35
49

84
1
1
192

3

2
2
5

366
1

367

150
197

347
10
11
959

34

5
5
39

6

1
-

1

3
6

9
-
-
16

-

1
1
1

(in millions)
December 31, 2010

Business loans:
Commercial
Real estate construction:

Commercial Real Estate

business line (a)
Other business lines (b)

Total real estate
construction

Commercial mortgage:

Commercial Real Estate

business line (a)
Other business lines (b)
Total commercial

mortgage
Lease financing
International

Total business loans

Retail loans:

Residential mortgage
Consumer:

Other consumer

Total consumer

Total retail loans

Total individually evaluated

impaired loans

957
(a) Primarily loans to real estate investors and developers.
(b) Primarily loans secured by owner-occupied real estate.

17 $

$

$

974

$

1,477

$

197

$

998

$

17

At December 31, 2009, individually evaluated impaired loans totaled $986 million. Of these loans, $956
million required an allowance, which totaled $193 million. Individually evaluated impaired loans averaged $932
million and $595 million for the years ended December 31, 2009 and 2008, respectively.

An analysis of changes in the allowance for loan losses follows:

(dollar amounts in millions)

Balance at January 1
Loan charge-offs
Recoveries on loans previously charged-off

Net loan charge-offs
Provision for loan losses
Foreign currency translation adjustment

Balance at December 31

As a percentage of total loans

$

$

103

2010

2009

985
(627)
63

(564)
480
-

$

770
(895)
27

(868)
1,082
1

2008

$ 557
(500)
29

(471)
686
(2)

$

901
985
2.24 % 2.34 % 1.52 %

$ 770

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following table presents loans by credit quality indicator, based on internal risk ratings assigned to
each business loan at the time of approval and subjected to subsequent periodic reviews by the Corporation’s
senior management, and to pools of retail loans with similar risk characteristics.

(in millions)
December 31, 2010

Business loans:
Commercial
Real estate construction:

Commercial Real Estate business line (e)
Other business lines (f)

Total real estate construction

Commercial mortgage:

Commercial Real Estate business line (e)
Other business lines (f)

Total commercial mortgage

Lease financing
International

Total business loans

Retail loans:

Residential mortgage
Consumer:

Home equity
Other consumer

Total consumer
Total retail loans

Internally Assigned Rating

Pass (a)

Special
Mention (b)

Substandard (c) Nonaccrual (d)

Total

$19,884

$

1,015

$

1,025
383
1,408

1,104
6,595
7,699
962
963
30,916

1,541

333
20
353

372
508
880
13
112
2,373

6

994

209
20
229

280
425
705
27
55
2,010

17

$

252

259
4
263

181
302
483
7
2
1,007

55

$22,145

1,826
427
2,253

1,937
7,830
9,767
1,009
1,132
36,306

1,619

1,662
575
2,237
3,778
$34,694

26
8
34
40
2,413

11
11
22
39
2,049

5
13
18
73
1,080

1,704
607
2,311
3,930
$40,236

Includes all loans not included in the categories of special mention, substandard or nonaccrual.

Total loans
(a)
(b) Special mention loans have potential credit weaknesses that deserve management’s close attention. Included in the special mention
category at December 31, 2010 were $546 million of loans proactively monitored by management that were considered “pass” by
regulatory authorities.

$

$

$

(c) Substandard loans are accruing loans that have a well-defined weakness, or weaknesses, that jeopardizes the orderly repayment of the

loan. This category is generally consistent with the Substandard category as defined by regulatory authorities.

(d) Nonaccrual loans are loans for which full collection of principal or interest is unlikely, or for which principal and/or interest payments
are 90 days or more past due, unless the loan is fully collateralized and in the process of collection. This category is generally consistent
with the Doubtful category as defined by regulatory authorities.

(e) Primarily loans to real estate investors and developers.
(f) Primarily loans secured by owner-occupied real estate.

NOTE 6 - SIGNIFICANT GROUP CONCENTRATIONS OF CREDIT RISK

Concentrations of credit risk may exist when a number of borrowers are engaged in similar activities, or
activities in the same geographic region, and have similar economic characteristics that would cause them to be
similarly impacted by changes in economic or other conditions. Concentrations of both on-balance sheet and
off-balance sheet credit risk are controlled and monitored as part of credit policies. The Corporation is a regional
financial services holding company with a geographic concentration of its on-balance-sheet and off-balance-sheet
activities in Michigan, California and Texas.

104

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

As outlined below, the Corporation has a concentration of credit risk with the automotive industry. Loans
to automotive dealers and to borrowers involved with automotive production are reported as automotive, as
management believes these loans have similar economic characteristics that might cause them to react similarly
to changes in economic conditions. This aggregation involves the exercise of judgment. Included in automotive
production are: (a) original equipment manufacturers and Tier 1 and Tier 2 suppliers that produce components
used in vehicles and whose primary revenue source is automotive-related (“primary” defined as greater than
50%) and (b) other manufacturers that produce components used in vehicles and whose primary revenue source
is automotive-related. Loans less than $1 million and loans recorded in the Small Business loan portfolio were
excluded from the definition. Outstanding loans and total exposure from loans, unused commitments and standby
letters of credit to companies related to the automotive industry were as follows:

(in millions)
December 31

Automotive loans:

Production
Dealer

Total automotive loans

Total automotive exposure:

Production
Dealer

Total automotive exposure

2010

2009

$

$

$

$

831
4,011

4,842

1,778
5,758

7,536

$

$

$

$

941
3,430

4,371

1,869
5,767

7,636

Further,

the Corporation’s portfolio of commercial real estate loans, which includes real estate

construction and commercial mortgage loans, was as shown in the following table.

(in millions)
December 31

Real estate construction loans:

Commercial Real Estate business line (a)
Other business lines (b)

Total real estate construction loans

Commercial mortgage loans:

Commercial Real Estate business line (a)
Other business lines (b)

Total commercial mortgage loans

Total commercial real estate loans

Total unused commitments on commercial real estate loans

(a) Primarily loans to real estate investors and developers.
(b) Primarily loans secured by owner-occupied real estate.

2010

2009

$

$

$

$

1,826
427

2,253

1,937
7,830

9,767

12,020

707

$

$

3,002
459

3,461

1,889
8,568

10,457

13,918

1,249

105

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 7 - PREMISES AND EQUIPMENT

A summary of premises and equipment by major category follows:

(in millions)
December 31

Land
Buildings and improvements
Furniture and equipment

Total cost

Less: Accumulated depreciation and amortization

Net book value

2010

2009

$

$

92
778
503
1,373
(743)
630

$

$

93
754
508
1,355
(711)
644

The Corporation conducts a portion of its business from leased facilities and leases certain equipment.
Rental expense for leased properties and equipment amounted to $82 million, $84 million and $76 million in
2010, 2009 and 2008, respectively. As of December 31, 2010, future minimum payments under operating leases
and other long-term obligations were as follows:

(in millions)
Years Ending December 31

2011
2012
2013
2014
2015
Thereafter
Total

NOTE 8 - GOODWILL

$

$

100
80
71
64
56
377
748

Goodwill is subject to impairment testing annually and on an interim basis if events or changes in
circumstances between annual tests indicate the assets might be impaired. The annual test of goodwill performed
in the third quarter 2010 and 2009 did not indicate that an impairment charge was required. There have been no
events since the annual test performed in the third quarter 2010 that would indicate that it was more likely than
not that goodwill had become impaired.

The carrying amount of goodwill for the years ended December 31, 2010, 2009 and 2008 are shown in the

following table. Amounts in all periods are based on business segments in effect at December 31, 2010.

(in millions)

Business
Bank

Retail
Bank

Wealth &
Institutional
Management

Other

Total

Balances at December 31, 2010, 2009

and 2008

$

90

$

47

$

13

$

-

$

150

NOTE 9 - DERIVATIVE AND CREDIT-RELATED FINANCIAL INSTRUMENTS

In the normal course of business, the Corporation enters into various transactions involving derivative and
credit-related financial instruments to manage exposure to fluctuations in interest rate, foreign currency and other
market risks and to meet the financing needs of customers. These financial instruments involve, to varying
degrees, elements of market and credit risk. Derivatives are carried at fair value in the consolidated financial
statements. Market and credit risk are included in the determination of fair value.

106

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Market risk is the potential loss that may result from movements in interest rates, foreign currency
exchange rates or energy commodity prices that cause an unfavorable change in the value of a financial
instrument. The Corporation manages this risk by establishing monetary exposure limits and monitoring
compliance with those limits. Market risk inherent in interest rate and energy contracts entered into on behalf of
customers is mitigated by taking offsetting positions, except in those circumstances when the amount, tenor and/
or contract rate level results in negligible economic risk, whereby the cost of purchasing an offsetting contract is
not economically justifiable. The Corporation mitigates most of the inherent market risk in foreign exchange
contracts entered into on behalf of customers by taking offsetting positions and manages the remainder through
individual foreign currency position limits and aggregate value-at-risk limits. These limits are established
in derivative instruments held or issued for risk
annually and reviewed quarterly. Market risk inherent
management purposes is typically offset by changes in the fair value of the assets or liabilities being hedged.

Credit risk is the possible loss that may occur in the event of nonperformance by the counterparty to a
financial instrument. For customer-initiated derivatives, the Corporation attempts to minimize credit risk arising
from financial instruments by evaluating the creditworthiness of each counterparty, adhering to the same credit
approval process used for traditional lending activities and obtaining collateral as deemed necessary.

For derivatives with dealer counterparties, the Corporation utilizes both counterparty risk limits and
monitoring procedures as well as master netting arrangements and bilateral collateral agreements to facilitate the
management of credit risk. Master netting arrangements effectively reduce credit risk by permitting settlement,
on a net basis, of contracts entered into with the same counterparty. Bilateral collateral agreements require daily
exchange of cash or highly rated securities issued by the U.S. Treasury or other U.S. government agencies to
collateralize amounts due to either party beyond certain risk limits. At December 31, 2010, counterparties had
pledged marketable investment securities to secure approximately 79 percent of the fair value of contracts with
bilateral collateral agreements in an unrealized gain position. For those counterparties not covered under bilateral
collateral agreements, collateral is obtained, if deemed necessary, based on the results of management’s credit
evaluation of the counterparty. Collateral varies, but may include cash,
investment securities, accounts
receivable, equipment or real estate. Included in the fair value of derivative instruments are credit valuation
adjustments reflecting counterparty credit risk. These adjustments are determined by applying a credit spread for
the counterparty or the Corporation, as appropriate, to the total expected exposure of the derivative.

The aggregate fair value of all derivative instruments with credit-risk-related contingent features that
were in a liability position on December 31, 2010 was $132 million, for which the Corporation had pledged
collateral of $128 million in the normal course of business. The credit-risk-related contingent features require the
Corporation’s debt to maintain an investment grade credit rating from each of the major credit rating agencies. If
the Corporation’s debt were to fall below investment grade, the counterparties to the derivative instruments could
require additional overnight collateral on derivative instruments in net liability positions. If the credit-risk-related
contingent features underlying these agreements had been triggered on December 31, 2010, the Corporation
would have been required to assign an additional $15 million of collateral to its counterparties.

DERIVATIVE INSTRUMENTS

Derivative instruments are traded over an organized exchange or negotiated over-the-counter. Credit risk
associated with exchange-traded contracts is typically assumed by the organized exchange. Over-the-counter
contracts are tailored to meet the needs of the counterparties involved and, therefore, contain a greater degree of
credit risk and liquidity risk than exchange-traded contracts, which have standardized terms and readily available
price information. The Corporation reduces exposure to credit and liquidity risks from over-the-counter
derivative instruments entered into for risk management purposes, and transactions entered into to mitigate the
market risk associated with customer-initiated transactions, by conducting such transactions with investment

107

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

grade domestic and foreign financial institutions and subjecting counterparties to credit approvals, limits and
monitoring procedures similar to those used in making other extensions of credit.

Detailed discussions of each class of derivative instruments held or issued by the Corporation for both

risk management and customer-initiated and other activities are as follows.

Interest Rate Swaps

Interest rate swaps are agreements in which two parties periodically exchange fixed cash payments for
variable payments based on a designated market rate or index, or variable payments based on two different rates
or indices, applied to a specified notional amount until a stated maturity. The Corporation’s swap agreements are
structured such that variable payments are primarily based on LIBOR (one-month, three-month or six-month) or
prime. These instruments are principally negotiated over-the-counter and are subject to credit risk, market risk
and liquidity risk.

Foreign Exchange Contracts

Foreign exchange contracts such as futures, forwards and options are primarily entered into as a service to
customers and to offset market risk arising from such positions. Futures and forward contracts require the
delivery or receipt of foreign currency at a specified date and exchange rate. Foreign currency options allow the
owner to purchase or sell a foreign currency at a specified date and price. Foreign exchange futures are exchange-
traded, while forwards, swaps and most options are negotiated over-the-counter. Foreign exchange contracts
expose the Corporation to both market risk and credit risk. The Corporation also uses foreign exchange rate
swaps and cross-currency swaps for risk management purposes.

Interest Rate Options, Including Caps and Floors

Option contracts grant the option holder the right to buy or sell an underlying financial instrument for a
predetermined price before the contract expires. Interest rate caps and floors are option-based contracts which
entitle the buyer to receive cash payments based on the difference between a designated reference rate and the
strike price, applied to a notional amount. Written options, primarily caps, expose the Corporation to market risk
but not credit risk. A fee is received at inception for assuming the risk of unfavorable changes in interest rates.
Purchased options contain both credit and market risk. All interest rate caps and floors entered into by the
Corporation are over-the-counter agreements.

Energy Derivative Contracts

The Corporation offers energy derivative contracts,

including over-the-counter and NYMEX-based
natural gas and crude oil fixed rate swaps and options, as a service to customers seeking to hedge market risk in
the underlying products. Contract tenors are typically limited to three years to accommodate hedge requirements
and are further limited to products that are liquid and available on demand. Energy derivative swaps are
over-the-counter agreements in which the Corporation and the counterparty periodically exchange fixed cash
payments for variable payments based upon a designated market price or index. Energy derivative contracts
expose the Corporation to both credit and market risk. Energy derivative option contracts grant the option owner
the right to buy or sell the underlying commodity for a predetermined price at settlement date. Energy caps,
floors and collars are option-based contracts that result in the buyer and seller of the contract receiving or making
cash payments based on the difference between a designated reference price and the contracted strike price,
applied to a notional amount. An option fee or premium is received by the Corporation at inception for assuming
the risk of unfavorable changes in energy commodity prices. Purchased options contain both credit and market
risk. Commodity options entered into by the Corporation are over-the-counter agreements.

108

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Commitments

The Corporation also enters into commitments to purchase or sell securities on behalf of customers or for

trading purposes. These transactions are similar in nature to forward contracts.

The following table presents the composition of the Corporation’s derivative instruments held or issued
for risk management purposes or in connection with customer-initiated and other activities at December 31, 2010
and 2009. The table excludes commitments, warrants accounted for as derivatives and a derivative related to the
Corporation’s 2008 sale of its remaining ownership of Visa shares.

(in millions)

Risk management purposes

Derivatives designated as hedging instruments

Interest rate contracts:

Swaps - cash flow - receive fixed/pay floating
Swaps - fair value - receive fixed/pay floating
Total risk management interest rate swaps designated

as hedging instruments

Derivatives used as economic hedges

Foreign exchange contracts:

Spot, forwards and swaps

Total risk management purposes
Customer-initiated and other activities

Interest rate contracts:

Caps and floors written
Caps and floors purchased
Swaps

Total interest rate contracts
Energy derivative contracts:
Caps and floors written
Caps and floors purchased
Swaps

Total energy derivative contracts
Foreign exchange contracts:

December 31, 2010

Fair Value (a)

December 31, 2009

Fair Value (a)

Notional/
Contract
Amount (b)

Asset
Derivatives

Liability
Derivatives

Notional/
Contract
Amount (b)

Asset
Derivatives

Liability
Derivatives

$

$

$

800 $

1,600

2,400

220
2,620 $

697 $
697
9,126
10,520

1,106
1,106
411
2,623

3 $

263

266

2
268 $

- $
7
269
276

-
62
41
103

- $
-

-

-
- $

1,700 $
1,600

30 $
194

3,300

224

253
3,553 $

-
224 $

7 $
-
242
249

1,176 $
1,176
9,744
12,096

62
-
41
103

869
869
599
2,337

- $

10
258
268

-
70
67
137

-
-

-

1
1

10
-
230
240

70
-
66
136

Spot, forwards, futures, options and swaps

33
409
Total customer-initiated and other activities
Total derivatives
410
(a) Asset derivatives are included in “accrued income and other assets” and liability derivatives are included in “accrued expenses and other
liabilities” on the consolidated balance sheets. Included in the fair value of derivative assets and liabilities are credit valuation
adjustments reflecting counterparty credit risk and credit risk of the Corporation. The fair value of derivative assets included credit
valuation adjustments for counterparty credit risk totaling $5 million and $4 million at December 31, 2010 and 2009, respectively.
(b) Notional or contract amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual
cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed
amounts subject to credit or market risk and are not reflected in the consolidated balance sheets.

2,023
16,456 $
20,009 $

2,497
15,640 $
18,260 $

48
400 $
400 $

49
428 $
696 $

35
440 $
664 $

$
$

Risk Management

As an end-user, the Corporation employs a variety of financial instruments for risk management purposes,
including cash instruments, such as investment securities, as well as derivative instruments. Activity related to
these instruments is centered predominantly in the interest rate markets and mainly involves interest rate swaps.
Various other types of instruments also may be used to manage exposures to market risks, including interest rate
caps and floors, total return swaps, foreign exchange forward contracts and foreign exchange swap agreements.

109

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

As part of a fair value hedging strategy, the Corporation entered into interest rate swap agreements for
interest rate risk management purposes. These interest rate swap agreements effectively modify the Corporation’s
exposure to interest rate risk by converting fixed-rate debt to a floating rate. These agreements involve the receipt
of fixed-rate interest amounts in exchange for floating-rate interest payments over the life of the agreement,
without an exchange of the underlying principal amount.

Risk management fair value interest rate swaps generated net interest income of $77 million and $61

million for the years ended December 31, 2010 and 2009, respectively.

The net gains (losses) recognized in “other noninterest income” (i.e., the ineffective portion) in the
consolidated statements of income on risk management derivative instruments designated as fair value hedges of
fixed-rate debt were as follows.

(in millions)

Interest rate swaps

2010

2009

$

(3) $

(4)

As part of a cash flow hedging strategy, the Corporation entered into predominantly two-year interest rate
swap agreements (weighted-average original maturity of 2.3 years) that effectively convert a portion of existing
and forecasted floating-rate loans to a fixed-rate basis, thus reducing the impact of interest rate changes on future
interest income over the life of the agreements (currently over the next three months). Approximately two
percent ($800 million) of the Corporation’s outstanding loans were designated as hedged items to interest rate
swap agreements at December 31, 2010. If interest rates, interest yield curves and notional amounts remain at
current levels, the Corporation expects to reclassify $1 million of net gains, net of tax, on derivative instruments
designated as cash flow hedges from accumulated other comprehensive income (loss) to earnings during the next
three months due to receipt of variable interest associated with existing and forecasted floating-rate loans.

The net gains (losses) recognized in income and OCI on risk management derivatives designated as cash

flow hedges of loans for years ended December 31, 2010 and 2009 are displayed in the table below.

(in millions)

Interest rate swaps

Gain (loss) recognized in OCI (effective portion)
Gain (loss) recognized in other noninterest

income (ineffective portion)

Gain reclassified from accumulated OCI

into interest and fees on loans (effective portion)

2010

2009

$

$

2

1

28

15

(2)

34

Foreign exchange rate risk arises from changes in the value of certain assets and liabilities denominated in
foreign currencies. The Corporation employs spot and forward contracts in addition to swap contracts to manage
exposure to these and other risks.

The net gains (losses) recognized in “other noninterest income” in the consolidated statements of income

on risk management derivative instruments used as economic hedges were as follows.

(in millions)

Foreign exchange contracts

2010

2009

$

-

$

(1)

110

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following table summarizes the expected weighted average remaining maturity of the notional
amount of risk management interest rate swaps and the weighted average interest rates associated with amounts
expected to be received or paid on interest rate swap agreements as of December 31, 2010 and 2009.

(dollar amounts in millions)

December 31, 2010
Swaps - cash flow - receive fixed/pay floating rate

Variable rate loan designation

Swaps - fair value - receive fixed/pay floating rate

Medium- and long-term debt designation

Total risk management interest rate swaps

December 31, 2009
Swaps - cash flow - receive fixed/pay floating rate

Variable rate loan designation

Swaps - fair value - receive fixed/pay floating rate

Medium- and long-term debt designation

Total risk management interest rate swaps

Weighted Average

Notional
Amount

Remaining
Maturity
(in years) Receive Rate Pay Rate (a)

$

$

$

$

800

1,600
2,400

1,700

1,600
3,300

0.1

7.1

0.9

8.1

4.75 %

3.25 %

5.73

0.85

5.22 %

3.25 %

5.73

1.01

(a) Variable rates paid on receive fixed swaps are based on prime and six-month LIBOR rates in effect at

December 31, 2010 and 2009.

Management believes these hedging strategies achieve the desired relationship between the rate maturities
of assets and funding sources which, in turn, reduce the overall exposure of net interest income to interest rate
risk, although there can be no assurance that such strategies will be successful.

Customer-Initiated and Other

Fee income is earned from entering into various transactions at the request of customers (customer-
initiated contracts), principally foreign exchange contracts, interest rate contracts and energy derivative contracts.
For customer-initiated foreign exchange contracts, the Corporation mitigates most of the inherent market risk by
taking offsetting positions and manages the remainder through individual foreign currency position limits and
aggregate value-at-risk limits. These limits are established annually and reviewed quarterly.

For those customer-initiated derivative contracts which were not offset or where the Corporation holds a
speculative position within the limits described above, the Corporation recognized in “other noninterest income”
in the consolidated statements of income net gains of $1 million, $1 million and $2 million for the years ended
December 31, 2010, 2009 and 2008, respectively.

Fair values of customer-initiated and other derivative instruments represent the net unrealized gains or
losses on such contracts and are recorded in the consolidated balance sheets. Changes in fair value are recognized
in the consolidated statements of income. The net gains recognized in income on customer-initiated derivative
instruments, net of the impact of offsetting positions, were as follows.

(in millions)
Years Ended December 31

Interest rate contracts
Energy derivative contracts
Foreign exchange contracts
Total

Location of Gain

2010

2009

Other noninterest income
Other noninterest income
Foreign exchange income

111

$

$

7
1
36
44

$

$

8
1
34
43

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

CREDIT-RELATED FINANCIAL INSTRUMENTS

The Corporation issues off-balance sheet financial instruments in connection with commercial and
consumer lending activities. The Corporation’s credit risk associated with these instruments is represented by the
contractual amounts indicated in the following table.

(in millions)
December 31

Unused commitments to extend credit:

Commercial and other
Bankcard, revolving check credit and home equity loan commitments
Total unused commitments to extend credit

Standby letters of credit
Commercial letters of credit
Other credit-related financial instruments

2010

2009

$

$
$

$

$
$

23,578
1,568
25,146
5,453
93
1

22,451
1,917
24,368
5,652
104
-

The Corporation maintains an allowance to cover probable credit losses inherent in lending-related
commitments, including unused commitments to extend credit, letters of credit and financial guarantees. At
December 31, 2010 and 2009, the allowance for credit losses on lending-related commitments, included in
“accrued expenses and other liabilities” on the consolidated balance sheets, was $35 million and $37 million,
respectively.

Unused Commitments to Extend Credit

Commitments to extend credit are legally binding agreements to lend to a customer, provided there is no
violation of any condition established in the contract. These commitments generally have fixed expiration dates
or other termination clauses and may require payment of a fee. Since many commitments expire without being
drawn upon,
future cash
the total contractual amount of commitments does not necessarily represent
requirements of the Corporation. Commercial and other unused commitments are primarily variable rate
commitments. The allowance for credit losses on lending-related commitments included $16 million and $20
million at December 31, 2010 and 2009, respectively, for probable credit losses inherent in the Corporation’s
unused commitments to extend credit.

At December 31, 2010 and 2009, commitments to lend additional funds to borrowers whose terms have

been modified in troubled debt restructurings totaled $7 million and $5 million, respectively.

Standby and Commercial Letters of Credit

Standby and commercial letters of credit represent conditional obligations of the Corporation which
guarantee the performance of a customer to a third party. Standby letters of credit are primarily issued to support
public and private borrowing arrangements,
including commercial paper, bond financing and similar
transactions. Commercial letters of credit are issued to finance foreign or domestic trade transactions and are
short-term in nature. These contracts expire in decreasing amounts through the year 2019. The Corporation may
enter into participation arrangements with third parties that effectively reduce the maximum amount of future
payments which may be required under standby and commercial letters of credit. These risk participations
covered $298 million and $404 million of the $5.5 billion and $5.8 billion standby and commercial letters of
credit outstanding at December 31, 2010 and 2009, respectively.

The carrying value of the Corporation’s standby and commercial letters of credit, included in “accrued
expenses and other liabilities” on the consolidated balance sheet, totaled $83 million at December 31, 2010,
including $64 million of deferred fees and $19 million in the allowance for credit losses on lending-related
commitments. At December 31, 2009, the comparable amounts were $70 million, $53 million and $17 million,
respectively.

112

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following table presents a summary of total internally classified watch list standby and commercial
letters of credit (loans generally consistent with regulatory defined special mention and substandard, in addition
to those of concern to the Corporation that have not yet been designated as special mention) at December 31,
2010 and 2009. The Corporation manages credit risk through underwriting, periodically reviewing and approving
its credit exposures using Board committee approved credit policies and guidelines.

(dollar amounts in millions)

Total watch list standby and commercial letters of credit
As a percentage of total outstanding standby and commercial

letters of credit

Other Credit-Related Financial Instruments

December 31

2010

2009

$

243

$

4.4 %

432

7.5 %

The Corporation enters into credit risk participation agreements, under which the Corporation assumes
credit exposure associated with a borrower’s performance related to certain interest rate derivative contracts. The
Corporation is not a party to the interest rate derivative contracts and only enters into these credit risk
participation agreements in instances in which the Corporation is also a party to the related loan participation
agreement for such borrowers. The Corporation manages its credit risk on the credit risk participation agreements
by monitoring the creditworthiness of the borrowers, which is based on the normal credit review process had it
entered into the derivative instruments directly with the borrower. The notional amount of such credit risk
participation agreement reflects the pro-rata share of the derivative instrument, consistent with its share of the
related participated loan. As of December 31, 2010 and 2009, the total notional amount of the credit risk
participation agreements was approximately $316 million and $523 million, respectively, and the fair value for
each period was insignificant, included in customer-initiated interest rate contracts recorded in “accrued expenses
and other liabilities” on the consolidated balance sheets. The maximum estimated exposure to these agreements,
as measured by projecting a maximum value of the guaranteed derivative instruments, assuming 100 percent
default by all obligors on the maximum values, was approximately $12 million and $18 million at December 31,
2010 and 2009, respectively. In the event of default, the lead bank has the ability to liquidate the assets of the
borrower, in which case the lead bank would be required to return a percentage of the recouped assets to the
participating banks. As of December 31, 2010, the credit risk participation agreements had a weighted average
remaining maturity for outstanding agreements of 2.5 years.

In 2008, the Corporation sold its remaining ownership of Visa Class B shares and entered into a
derivative contract. Under the terms of the derivative contract, the Corporation will compensate the counterparty
primarily for dilutive adjustments made to the conversion factor of the Visa Class B shares to Class A shares
based on the ultimate outcome of litigation involving Visa. Conversely, the Corporation will be compensated by
the counterparty for any increase in the conversion factor from anti-dilutive adjustments. The notional amount of
the derivative contract was equivalent to approximately 780 thousand Visa Class B shares. The fair value of the
derivative liability was $1 million and an insignificant amount at December 31, 2010 and 2009, respectively,
included in “accrued expenses and other liabilities” on the consolidated balance sheets.

NOTE 10 - VARIABLE INTEREST ENTITIES (VIEs)

The Corporation evaluates its interest in certain entities to determine if these entities meet the definition
of a VIE and whether the Corporation is the primary beneficiary and should consolidate the entity based on the
inception and when there is a change in circumstances that require a
variable interests it held both at
reconsideration. The following provides a summary of the VIEs in which the Corporation has an interest.

The Corporation has a limited partnership interest

in 147 low income housing tax credit/historic
rehabilitation tax credit partnerships. These entities meet the definition of a VIE; however, the Corporation is not
the primary beneficiary of the entities, as the general partner has both the power to direct the activities that most
significantly impact the economic performance of the entities and the obligation to absorb losses or the right to

113

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

receive benefits that could be significant to the entities. While the partnership agreements allow the limited
partners, through a majority vote, to remove the general partner, this right is not deemed to be substantive as the
general partner can only be removed for cause.

The Corporation accounts for its interest in these partnerships on either the cost or equity method.
Exposure to loss as a result of the Corporation’s involvement with these entities at December 31, 2010 was
limited to the book basis of the Corporation’s investment of approximately $339 million, which includes unused
commitments for future investments.

As a limited partner, the Corporation obtains income tax credits and deductions from the operating losses
of these low income housing tax credit/historic rehabilitation tax credit partnerships, which are recorded as a
reduction of income tax expense (or an increase to income tax benefit) and a reduction of federal income taxes
payable. These income tax credits and deductions are allocated to the funds’ investors based on their ownership
percentages. Investment balances, including all legally binding commitments to fund future investments, are
included in “accrued income and other assets” on the consolidated balance sheets, with amortization and other
write-downs of investments recorded in “other noninterest income” on the consolidated statements of income. In
addition, a liability is recognized in “accrued expenses and other liabilities” on the consolidated balance sheets
for all
legally binding unfunded commitments to fund low income housing partnerships ($71 million at
December 31, 2010).

The Corporation provided no financial or other support that was not contractually required to any of the

above VIEs during the years ended December 31, 2010 and 2009.

The following table summarizes the impact of these VIEs on line items on the Corporation’s consolidated

statements of income.

(in millions)
Classification in Earnings

Other noninterest income
Provision (benefit) for income taxes (a)

Years Ended December 31,

2010

2009

$

(51) $
(49)

(48)
(46)

(a)

Income tax credits from low income housing tax credit/historic rehabilitation tax credit partnerships.

For further information on the Corporation’s consolidation policy, see Note 1.

NOTE 11 - DEPOSITS

At December 31, 2010, the scheduled maturities of certificates of deposit and other deposits with a stated

maturity were as follows:

(in millions)
Years Ending December 31

2011
2012
2013
2014
2015
Thereafter

Total

114

$4,985
663
132
51
43
40

$5,914

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

A maturity distribution of domestic certificates of deposit of $100,000 and over follows:

(in millions)
December 31

Three months or less
Over three months to six months
Over six months to twelve months
Over twelve months

Total

2010

2009

$

$

$

1,109
560
928
548

3,145

$

1,657
1,142
1,333
536

4,668

All foreign office time deposits of $432 million and $542 million at December 31, 2010 and 2009,

respectively, were in denominations of $100,000 or more.

NOTE 12 - SHORT-TERM BORROWINGS

Federal funds purchased and securities sold under agreements to repurchase generally mature within one
to four days from the transaction date. Other short-term borrowings, which may consist of Federal Reserve Term
Auction Facility borrowings, commercial paper, borrowed securities, term federal funds purchased, short-term
notes and treasury tax and loan deposits, generally mature within one to 120 days from the transaction date. The
following table provides a summary of short-term borrowings.

At December 31, 2010, Comerica Bank (the Bank), a subsidiary of the Corporation, had pledged loans

totaling $18 billion which provided for up to $12 billion of available collateralized borrowing with the FRB.

(dollar amounts in millions)

December 31, 2010

Amount outstanding at year-end
Weighted average interest rate at year-end
Maximum month-end balance during the year
Average balance outstanding during the year
Weighted average interest rate during the year

December 31, 2009

Amount outstanding at year-end
Weighted average interest rate at year-end
Maximum month-end balance during the year
Average balance outstanding during the year
Weighted average interest rate during the year

December 31, 2008

Amount outstanding at year-end
Weighted average interest rate at year-end
Maximum month-end balance during the year
Average balance outstanding during the year
Weighted average interest rate during the year

Federal Funds Purchased
and Securities Sold Under
Agreements to Repurchase

Other
Short-term
Borrowings

$

$

$

$

$

$

115

$

$

$

$

$

$

126
0.12 %
474
210
0.11 %

462
0.03 %
655
467
0.19 %

696
0.37 %
3,617
2,105
2.20 %

4
4.95 %
16
6
5.31 %

-
- %

2,558
532
0.28 %

1,053
0.40 %
3,046
1,658
2.43 %

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 13 - MEDIUM- AND LONG-TERM DEBT

Medium- and long-term debt are summarized as follows:

(in millions)
December 31

Parent company
Subordinated notes:

4.80% subordinated note due 2015
6.576% subordinated notes due 2010

Total subordinated notes

Medium-term notes:

Floating rate based on LIBOR indices due 2010
3.00% notes due 2015

Total parent company

Subsidiaries
Subordinated notes:

7.125% subordinated note due 2010
5.70% subordinated note due 2014
5.75% subordinated notes due 2016
5.20% subordinated notes due 2017
8.375% subordinated note due 2024
7.875% subordinated note due 2026

Total subordinated notes

Medium-term notes:

Floating rate based on LIBOR indices due 2010 to 2012

Federal Home Loan Bank advances:

Floating rate based on LIBOR indices due 2010 to 2014

Other notes:

6.0% - 6.4% notes due 2020

Total subsidiaries
Total medium- and long-term debt

2010

2009

$

$

337
-
337

-
298
635

-
280
691
568
191
213
1,943

325
511
836

150
-
986

152
275
678
543
187
204
2,039

1,017

1,982

2,500

6,000

43
5,503
$ 6,138

53
10,074
$ 11,060

The carrying value of medium- and long-term debt has been adjusted to reflect the gain or loss

attributable to the risk hedged with interest rate swaps.

All subordinated notes with maturities greater than one year qualify as Tier 2 capital.

Comerica Bank (the Bank), a subsidiary of the Corporation, is a member of the FHLB, which provides
short- and long-term funding collateralized by mortgage-related assets to its members. In the third quarter 2010,
the Bank early redeemed, without penalty, $2.0 billion of floating-rate FHLB advances at par due 2012 and 2013.
FHLB advances bear interest at variable rates based on LIBOR and were secured by a blanket lien on $16 billion
of real estate-related loans at December 31, 2010.

In the first quarter 2010, the Bank exercised its option to redeem, at par, a $150 million, 7.125%
subordinated note, which had an original maturity date of 2013, and recognized a pre-tax gain of $2 million
resulting from the previous termination of a related interest rate swap. In addition, the Bank repurchased, at a
discount, $15 million of floating rate medium-term notes maturing in 2011 in the first quarter 2010.

116

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

In the third quarter 2010, the Corporation issued $300 million of 3.00% medium-term senior notes due
2015. A portion of the proceeds, along with cash on hand, was used to redeem 6.576% subordinated notes, as
discussed below, and the remainder was used for general corporate purposes.

In the fourth quarter 2010, the Corporation redeemed, at par, $515 million of 6.576% subordinated notes,
which had an original maturity date of 2037, and recognized a pre-tax charge of $5 million resulting from the
accelerated accretion of the original
included in “other noninterest expenses” in the
consolidated statements of income. The notes related to $500 million, par value, of trust preferred securities
issued by an unconsolidated subsidiary, which were concurrently redeemed.

issuance discount,

In 2009, the Bank repurchased, at a discount, $212 million of floating-rate medium-term notes maturing

in 2012 and recognized a gain of $15 million.

The Corporation currently has a $15 billion medium-term senior note program. This program allows the
Bank to issue fixed- or floating-rate notes with maturities between one year and 30 years. The Bank did not issue
any notes under the senior note program during the years ended December 31, 2010 and 2009. The interest rate
on the floating rate medium-term notes based on LIBOR at December 31, 2010, ranged from three-month
LIBOR plus 0.11% to three-month LIBOR plus 0.15%. The medium-term notes outstanding at December 31,
2010 are due from 2011 to 2012. The medium-term notes do not qualify as Tier 2 capital and are not insured by
the FDIC.

At December 31, 2010, the principal maturities of medium- and long-term debt were as follows:

(in millions)
Years Ending December 31

2011
2012
2013
2014
2015
Thereafter

Total

$

$

1,365
163
1,005
1,256
606
1,466

5,861

NOTE 14 - SHAREHOLDERS’ EQUITY

In the first quarter 2010, the Corporation fully redeemed $2.25 billion of Fixed Rate Cumulative
Perpetual Preferred Stock (preferred stock) issued in 2008 in connection with the U.S. Department of Treasury
(U.S. Treasury) Capital Purchase Program. The redemption was funded by the net proceeds from an $880 million
common stock offering completed in the first quarter 2010 and from excess liquidity at the parent company. The
redemption resulted in a one-time, non-cash redemption charge of $94 million in the first quarter 2010, reflecting
the accelerated accretion of the remaining discount, which reduced diluted earnings per common share by $0.54
for the year ended December 31, 2010. The total impact of the preferred stock, including the redemption charge,
cash dividends of $24 million and non-cash discount accretion of $5 million, was a reduction to diluted earnings
per common share of $0.71 for the year ended December 31, 2010.

Upon the redemption of the preferred stock, related restrictions on the Corporation’s ability to declare
dividends or repurchase stock ceased. In addition, the Corporation is no longer required to comply with the U.S.
Treasury’s standards for executive compensation and corporate governance.

117

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

In the second quarter 2010, the U.S. Treasury sold the related warrant, which granted the right to purchase
11.5 million shares of the Corporation’s common stock at $29.40 per share. Prior to the public sale, the warrant
was separated into 11.5 million warrants to purchase one share of the Corporation’s common stock at an exercise
price of $29.40 per share. The sale of the warrant by the U.S. Treasury had no impact on the Corporation’s
equity. The warrants remained outstanding at December 31, 2010 and were included in “capital surplus” on the
consolidated statements of changes in shareholders’ equity at their original fair value of $124 million.

At December 31, 2010, the Corporation had 11.5 million shares of common stock reserved for the
warrants, 26.5 million shares of common stock reserved for stock option exercises and 1.8 million shares of
restricted stock outstanding to employees and directors under share-based compensation plans.

In November 2010, the Board of Directors of the Corporation (the Board) authorized the purchase of up
to 12.6 million shares of Comerica Incorporated outstanding common stock, as well as outstanding warrants to
purchase up to 11.5 million shares of the Corporation’s common stock. There is no expiration date for the
Corporation’s share repurchase program. There were no open market repurchases of common stock or warrants
in 2010, 2009 and 2008.

The following table summarizes the Corporation’s share repurchase activity for the year ended

December 31, 2010.

Total Number of Shares and
Warrants Purchased as Part of
Publicly Announced
Repurchase Plans or
Programs

Remaining
Repurchase
Authorization (a)

Total Number
of Shares
Purchased (b)

Average Price
Paid Per Share

-

-

-

-
-
-

-

-

12,576

12,576

12,576

12,576
24,056
24,056

24,056

24,056

60 $

55

2

1
-
-

1

118 $

35.28

42.65

37.33

37.11
-
-

37.58

38.82

(shares in thousands)

Total first quarter 2010

Total second quarter 2010

Total third quarter 2010

October 2010
November 2010
December 2010

Total fourth quarter 2010

Total 2010

(a) Maximum number of shares and warrants that may yet be purchased under the publicly announced plans or

(b)

programs.
Includes shares purchased as part of publicly announced repurchase plans or programs, shares purchased
pursuant to deferred compensation plans and shares purchased from employees to pay for grant prices and/
or taxes related to stock option exercises and restricted stock vesting under the terms of an employee share-
based compensation plan.

NOTE 15 - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

Other comprehensive income (loss) includes the change in net unrealized gains and losses on investment
securities available-for-sale, the change in accumulated net gains and losses on cash flow hedges and the change
in the accumulated defined benefit and other postretirement plans adjustment. Total comprehensive income (loss)
was $224 million, ($10) million and $81 million for the years ended December 31, 2010, 2009 and 2008,
respectively. The $234 million increase in total comprehensive income for the year ended December 31, 2010,
when compared to 2009, resulted principally from a $260 million increase in net income and a $123 million

118

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

after-tax increase in net unrealized gains on investment securities available-for-sale, partially offset by $145
million after-tax decrease in the defined benefit and other postretirement benefit plans adjustment. The following
table presents reconciliations of the components of accumulated other comprehensive income (loss) for the years
ended December 31, 2010, 2009 and 2008.

For a further discussion of the effects of investment securities available-for-sale, derivative instruments
and defined benefit and other postretirement benefit plans on other comprehensive income (loss) refer to Notes 1,
9 and 18.

(in millions)
Years Ended December 31

2010

2009

2008

Accumulated net unrealized gains (losses) on investment securities

available-for-sale:
Balance at beginning of period, net of tax

Net unrealized holding gains arising during the period
Less: Reclassification adjustment for net gains included in net income

Change in net unrealized gains before income taxes
Less: Provision for income taxes

Change in net unrealized gains on investment securities available-for-sale,

net of tax

Balance at end of period, net of tax

Accumulated net gains (losses) on cash flow hedges:

Balance at beginning of period, net of tax

Net cash flow hedge gains arising during the period
Less: Reclassification adjustment for net gains included in net income

Change in net cash flow hedge gains before income taxes
Less: Provision for income taxes

Change in net cash flow hedge gains, net of tax

$

$

$

$

$

$

11
7
3

4
1

3

14

18
2
28

(26)
(10)

(16)

$

131
54
243

(189)
(69)

(9)
285
67

218
78

(120)

140

11

$ 131

$

30
15
34

(19)
(7)

(12)

2
69
24

45
17

28

30

Balance at end of period, net of tax

$

2

$

18

$

Accumulated defined benefit pension and other postretirement plans

adjustment:
Balance at beginning of period, net of tax

Net defined benefit pension and other postretirement adjustment arising

during the period

Less: Adjustment for amounts recognized as components of net periodic

benefit cost during the period

Change in defined benefit pension and other postretirement plans

adjustment before income taxes

Less: Provision for income taxes

Change in defined benefit pension and other postretirement plans

adjustment, net of tax

Balance at end of period, net of tax

Total accumulated other comprehensive loss at end of period, net of tax

$ (365) $

(470) $ (170)

(100)

112

(488)

(39)

(61)
(21)

(53)

(18)

165
60

(470)
(170)

(40)
$ (405) $
$ (389) $

105

(300)

(365) $ (470)

(336) $ (309)

119

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 16 - NET INCOME (LOSS) PER COMMON SHARE

Basic and diluted income (loss) from continuing operations per common share and net income (loss) per

common share are presented in the following table.

(in millions, except per share data)
Years Ended December 31

Basic and diluted

Income from continuing operations
Less:

Preferred stock dividends
Redemption discount accretion on preferred stock
Income allocated to participating securities

Income (loss) from continuing operations attributable to common shares

Net income
Less:

Preferred stock dividends
Redemption discount accretion on preferred stock
Income allocated to participating securities

Net income (loss) attributable to common shares

Basic average common shares

Basic income (loss) from continuing operations per common share
Basic net income (loss) per common share

Basic average common shares
Dilutive common stock equivalents:

Net effect of the assumed exercise of stock options
Net effect of the assumed exercise of warrants

Diluted average common shares

Diluted income (loss) from continuing operations per common share
Diluted net income (loss) per common share

2010

2009

2008

$

260

$

16

$

212

29
94
1

136
277

29
94
1

153

170

0.79
0.90

170

1
2

173

0.78
0.88

134
-
1

$
$

(119) $
$
17

134
-
1

$

(118) $

149

17
-
4

191
213

17
-
4

192

149

$ (0.80) $ 1.28
1.29

(0.79)

149

149

-
-

-
-

149

149

$ (0.80) $ 1.28
1.28

(0.79)

$
$

$

$

$

Basic income (loss) from continuing operations per common share and net income (loss) per common
share are calculated using the two-class method. The two-class method is an earnings allocation formula that
determines earnings per share for each share of common stock and participating securities according to dividends
declared (distributed earnings) and participation rights in undistributed earnings. Distributed and undistributed
earnings are allocated between common and participating security shareholders based on their respective rights to
receive dividends. Unvested share-based payment awards that contain nonforfeitable rights to dividends or
dividend equivalents are considered participating securities (i.e., nonvested restricted stock). Undistributed net
losses are not allocated to nonvested restricted shareholders, as these shareholders do not have a contractual
obligation to fund the losses incurred by the Corporation. Income (loss) from continuing operations attributable
to common shares and net income (loss) attributable to common shares are then divided by the weighted-average
number of common shares outstanding during the period, net of nonvested restricted shares.

Diluted income (loss) from continuing operations per common share and net income (loss) per common
share consider common stock issuable under the assumed exercise of stock options granted under the
Corporation’s stock plans and warrants. Diluted income (loss) from continuing operations attributable to

120

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

common shares and net income (loss) attributable to common shares are then divided by the total of weighted-
average number of common shares and common stock equivalents outstanding during the period, net of
nonvested restricted shares.

The following average shares related to outstanding options and warrants to purchase shares of common
stock were not included in the computation of diluted net income (loss) per common share because the options’
and warrants’ exercise prices were greater than the average market price of common shares for the period.

(shares in millions)

Average outstanding options
Range of exercise prices
Average outstanding warrants
Exercise price

2010

2009

2008

15.1
$36.24 - $64.50

17.6
$28.07 - $66.81
11.5
$29.40

19.7
$33.69 - $71.58

Due to the net loss from continuing operations attributable to common shares reported for the year ended
December 31, 2009, options to purchase 1.5 million shares, with average exercise prices less than the average
market price of common shares for the period, were excluded from the computation of diluted net loss per share,
as their inclusion would have been anti-dilutive.

NOTE 17 - SHARE-BASED COMPENSATION

Share-based compensation expense is charged to “salaries” expense on the consolidated statements of
income. The components of share-based compensation expense for all share-based compensation plans and
related tax benefits are as follows:

(in millions)

Total share-based compensation expense

Related tax benefits recognized in net income

2010

2009

2008

$

$

32

12

$

$

32

12

$

$

51

19

The following table summarizes unrecognized compensation expense for all share-based plans:

(dollar amounts in millions)

Total unrecognized share-based compensation expense

Weighted-average expected recognition period (in years)

December 31, 2010

$

33

2.5

The Corporation has share-based compensation plans under which it awards both shares of restricted
stock to key executive officers and key personnel and stock options to executive officers, directors and key
personnel of the Corporation and its subsidiaries. Restricted stock vests over periods ranging from three years to
five years. Stock options vest over periods ranging from one year to four years. During the period the U.S.
Treasury held equity issued under the Capital Purchase Program, restricted share grants were temporarily
prohibited from vesting in less than two years from the grant date and retirement-based acceleration was not
allowed. These temporary restrictions lengthened the requisite service period and, therefore, the amortization
period for retirement eligible grantees. Upon redemption of the preferred stock in the first quarter 2010, the
temporary restrictions lapsed. The maturity of each option is determined at the date of grant; however, no options
may be exercised later than ten years and one month from the date of grant. The options may have restrictions
regarding exercisability. The plans originally provided for a grant of up to 15.7 million common shares, plus
shares under certain plans that are forfeited, expire or are cancelled. At December 31, 2010, 7.5 million shares
were available for grant.

121

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

In the first quarter 2010, the Corporation began providing phantom stock units (PSUs) as a component of
compensation for certain executives. The number of PSUs awarded for each pay period is determined by dividing
the amount of base salary payable in PSUs for that pay period by the reported closing price on the New York
Stock Exchange (NYSE) for a share of the Corporation’s common stock on the pay date for the pay period. PSUs
do not include any shareholder rights such as the right to vote or receive dividends, are fully vested when
awarded, and will be settled in cash in the first quarter 2011. The amount payable upon settlement will be equal
to the number of PSUs being settled multiplied by the reported closing price on the NYSE for a share of the
Corporation common stock on the date of settlement and is included in “accrued expenses and other liabilities”
on the consolidated balance sheets. Share-based compensation expense included $7 million related to PSUs for
the year ended December 31, 2010.

The Corporation used a binomial model to value stock options granted in the periods presented. Option
valuation models require several inputs, including the expected stock price volatility, and changes in input
assumptions can materially affect the fair value estimates. The model used may not necessarily provide a reliable
single measure of the fair value of employee and director stock options. The risk-free interest rate assumption
used in the binomial option-pricing model as outlined in the table below was based on the federal ten-year
treasury interest rate. The expected dividend yield was based on the historical and projected dividend yield
patterns of the Corporation’s common shares. Expected volatility assumptions considered both the historical
volatility of the Corporation’s common stock over a ten-year period and implied volatility based on actively
traded options on the Corporation’s common stock with pricing terms and trade dates similar to the stock options
granted.

The estimated weighted-average grant-date fair value per option share and the underlying binomial

option-pricing model assumptions are summarized in the following table:

Years Ended December 31

Weighted-average grant-date fair value per option share
Weighted-average assumptions:
Risk-free interest rates
Expected dividend yield
Expected volatility factors of the market price of

Comerica common stock
Expected option life (in years)

2010

2009

2008

$ 11.07

$

6.55

$

9.54

3.73%
3.00

40
6.1

3.08%
4.62

58
6.4

3.73%
4.62

34
6.6

A summary of the Corporation’s stock option activity and related information for the year ended

December 31, 2010 follows:

Weighted-Average

Number of
Options
(in thousands)

Exercise Price
per Share

Remaining
Contractual
Term
(in years)

Aggregate
Intrinsic Value
(in millions)

Outstanding-January 1, 2010

Granted
Forfeited or expired
Exercised

Outstanding-December 31, 2010
Outstanding, net of expected forfeitures -

December 31, 2010

Exercisable-December 31, 2010

$

18,422
2,374
(1,566)
(200)
19,030

18,785
14,245

122

49.52
35.45
44.27
25.99
48.44

48.65
53.21

$

4.8

4.7
3.6

60

57
13

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The aggregate intrinsic value of outstanding options shown in the table above represents the total pretax
intrinsic value at December 31, 2010, based on the Corporation’s closing stock price of $42.24 at December 31,
2010.

The total intrinsic value of stock options exercised was $3 million and an insignificant amount for the
years ended December 31, 2010 and 2008, respectively. There were no stock options exercised during 2009.
Cash received from the exercise of stock options during 2010 and 2008 totaled $5 million and $1 million,
respectively. The net excess income tax benefit realized for the tax deductions from the exercise of these options
totaled $1 million and was insignificant for the years ended December 31, 2010 and 2008, respectively.

A summary of the Corporation’s restricted stock activity and related information for 2010 follows:

Outstanding-January 1, 2010

Granted
Forfeited
Vested

Outstanding-December 31, 2010

Number of
Shares
(in thousands)

Weighted-Average
Grant-Date
Fair Value per Share

$

2,089
177
(83)
(367)

1,816

$

36.82
39.24
33.72
52.35

34.06

The total fair value of restricted stock awards that fully vested during the years ended December 31, 2010,

2009 and 2008 was $19 million, $16 million and $7 million, respectively.

The Corporation expects to satisfy the exercise of stock options and future grants of restricted stock by
issuing shares of common stock out of treasury. At December 31, 2010, the Corporation held 27.3 million shares
in treasury.

For further information on the Corporation’s share-based compensation plans, refer to Note 1.

NOTE 18 - EMPLOYEE BENEFIT PLANS

DEFINED BENEFIT PENSION AND POSTRETIREMENT BENEFIT PLANS

The Corporation has a qualified and a non-qualified defined benefit pension plan, which together provide
benefits for substantially all full-time employees hired before January 1, 2007. Employee benefits expense
included defined benefit pension expense of $30 million, $57 million and $20 million in the years ended
December 31, 2010, 2009 and 2008, respectively, for the plans. Benefits under the defined benefit plans are
based primarily on years of service, age and compensation during the five highest paid consecutive calendar
years occurring during the last ten years before retirement.

The Corporation’s postretirement benefit plan continues to provide postretirement health care and life
insurance benefits for retirees as of December 31, 1992. The plan also provides certain postretirement health care
and life insurance benefits for a limited number of retirees who retired prior to January 1, 2000. For all other
employees hired prior to January 1, 2000, a nominal benefit is provided. Employees hired on or after January 1,
2000 are not eligible to participate in the plan. The Corporation funds the pre-1992 retiree plan benefits with
bank-owned life insurance.

123

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following table sets forth reconciliations of plan assets and the projected benefit obligation, the
weighted-average assumptions used to determine year-end benefit obligations, and the amounts recognized in
accumulated other comprehensive income (loss) for the Corporation’s defined benefit pension plans and
postretirement benefit plan at December 31, 2010 and 2009. The Corporation used a measurement date of
December 31, 2010 for these plans.

Defined Benefit Pension Plans
Qualified

Non-Qualified
2009
2010

(dollar amounts in millions)

2010

2009

Change in fair value of plan assets:
Fair value of plan assets at January 1
Actual return on plan assets
Employer contributions
Benefits paid
Fair value of plan assets at December 31

Change in projected benefit obligation:
Projected benefit obligation at January 1
Service cost
Interest cost
Actuarial (gain) loss
Benefits paid
Plan change

$

$

$

$ 1,338
172
-
(46)
$ 1,464

$ 1,080
200
100
(42)
$ 1,338

$ 1,213
28
73
141
(46)
-

$ 1,165
28
69
(7)
(42)
-

Projected benefit obligation at December 31

$ 1,409

$ 1,213

$

-
-
-
-
-

156
3
9
16
(7)
-

177

$

$

$

$

-
-
-
-
-

156
4
9
(11)
(6)
4

156

$

$

$

$

$ 1,281

$ 1,096

$

55

$

125

164

$
$
$
$ (177) $ (156) $

142

Postretirement
Benefit Plan

2010

2009

73
4
3
(7)
73

84
-
4
1
(7)
-

82

82

(9)

$

$

$

$

$

$

74
7
(1)
(7)
73

80
-
5
6
(7)
-

84

84

(11)

5.51% 5.92%
4.00

3.50

5.51% 5.92%
4.00

3.50

4.95% 5.41%
n/a

n/a

Cost trend rate assumed for next year
Rate to which the cost trend rate is assumed

to decline (the ultimate trend rate)

Year when rate reaches the ultimate trend

rate

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

n/a

8.00

5.00

8.00

5.00

2031

2030

Amounts recognized in accumulated other comprehensive income (loss) before income taxes:
(49) $
$
Net actuarial gain (loss)
7
Prior service (cost) credit
-
Net transition obligation
(42) $

(522) $
(13)
-
(535) $

(461) $
(20)
-
(481) $

(61) $
6
-
(55) $

Balance at December 31

$

(29)
(5)
(8)

(42)

$

$

(30)
(5)
(13)

(48)

(a) Based on projected benefit obligation for defined benefit pension plans and accumulated benefit obligation

for postretirement benefit plan.

(b) The Corporation recognizes the overfunded and underfunded status of the plans in “accrued income and

other assets” and “accrued expenses and other liabilities,” respectively, on the consolidated balance sheets.

n/a-not applicable

124

Accumulated benefit obligation

Funded status at December 31 (a) (b)

Weighted-average assumptions used:
Discount rate
Rate of compensation increase
Healthcare cost trend rate:

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The 2009 non-qualified defined benefit pension plan change of $4 million reflected the recognition of
special agreement benefits not previously included in plan valuations. The accumulated benefit obligation
exceeded the fair value of plan assets for the non-qualified defined benefit pension plan and the postretirement
benefit plan at December 31, 2010 and 2009.

The following table details the changes in plan assets and benefit obligations recognized in other

comprehensive income (loss) for the year ended December 31, 2010.

Defined Benefit
Pension Plans

Postretirement

(in millions)

Qualified Non-Qualified Benefit Plan

Total

Actuarial gain (loss) arising during the period
Amortization of net actuarial gain (loss)
Amortization of prior service (cost) credit
Amortization of transition obligation
Total recognized in other comprehensive income (loss) $

$

(85) $
25
6
-

(54) $

(15) $
4
(2)
-

(13) $

- $
1
1
4

6 $

(100)
30
5
4

(61)

125

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Components of net periodic defined benefit cost and postretirement benefit cost, the actual return (loss)

on plan assets and the weighted-average assumptions used were as follows:

(dollar amounts in millions)
Years Ended December 31

Qualified
2009

2010

2008

2010

Non-Qualified
2009

2008

Defined Benefit Pension Plans

Service cost
Interest cost
Expected return on plan assets
Amortization of prior service cost (credit)
Amortization of net loss
Recognition of special agreement benefits
Net periodic defined benefit cost
Actual return (loss) on plan assets
Actual rate of return (loss) on plan assets
Weighted-average assumptions used:
Discount rate
Expected long-term return on plan assets
Rate of compensation increase
n/a - not applicable

(dollar amounts in millions)
Years Ended December 31

Interest cost
Expected return on plan assets
Amortization of transition obligation
Amortization of prior service cost
Amortization of net loss
Net periodic postretirement benefit cost
Actual return (loss) on plan assets
Actual rate of return (loss) on plan assets
Weighted-average assumptions used:
Discount rate
Expected long-term return on plan assets
Healthcare cost trend rate:

Cost trend rate assumed for next year
Rate to which the cost trend rate is

assumed to decline (the ultimate trend
rate)

Year that the rate reaches the ultimate trend rate

$

$

$

$

28
3
73
9
(116)
-
6
(2)
25
4
-
-
$
16
$ 14
-
$ 172
$
13.10 % 17.35 % (24.09) % n/a

28
66
(100)
7
4
-
5
$
$ (293)

28
69
(104)
6
38
-
37
$
$ 200

$

$
$

4
9
-
(2)
5
4
20
-
n/a

$

$
$

4
9
-
(2)
4
-
15
-
n/a

5.92 % 6.03 %
8.00
3.50

8.25
4.00

6.47 % 5.92 % 6.03 %
8.25
4.00

n/a
4.00

n/a
3.50

6.47 %
n/a
4.00

Postretirement Benefit Plan
2009
2010

2008

$

$

$

4
(3)
4
1
1
7
4

5
(4)
4
1
1
$
7
$
7
5.65 % 10.74 % (11.36) %

5
(4)
4
-
1
6
(10)

$
$

$
$

5.41 % 6.20 %
5.00

5.00

6.15 %
5.00

8.00

8.00

8.00

5.00
2030

5.00
2028

5.00
2013

The expected long-term rate of return of plan assets is the average rate of return expected to be realized
on funds invested or expected to be invested over the life of the plan, which has an estimated average life of
approximately 15 years as of December 31, 2010. The expected long-term rate of return on plan assets is set after
considering both long-term returns in the general market and long-term returns experienced by the assets in the
plan. The returns on the various asset categories are blended to derive one long-term rate of return. The
Corporation reviews its pension plan assumptions on an annual basis with its actuarial consultants to determine if
assumptions are reasonable and adjusts the assumptions to reflect changes in future expectations.

126

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The estimated portion of balances remaining in accumulated other comprehensive income (loss) that are
expected to be recognized as a component of net periodic benefit cost in the year ended December 31, 2011 are
as follows.

(in millions)

Net loss
Transition obligation
Prior service cost (credit)

Defined Benefit Pension Plans

Qualified

Non-Qualified

Postretirement
Benefit Plan

$

35
-
4

$

5
-
(2)

$

1
4
1

Total

$ 41
4
3

Assumed healthcare cost

trend rates have a significant effect on the amounts reported for the
postretirement benefit plan. A one-percentage-point change in 2010 assumed healthcare and prescription drug
cost trend rates would have the following effects:

(in millions)

Effect on postretirement benefit obligation
Effect on total service and interest cost

One-Percentage-Point
Increase Decrease

$

$

5
-

(5)
-

Plan Assets

The Corporation’s overall investment goals for the qualified defined benefit pension plan are to maintain
a portfolio of assets of appropriate liquidity and diversification; to generate investment returns (net of operating
costs) that are reasonably anticipated to maintain the plan’s fully funded status or to reduce a funding deficit,
after taking into account various factors, including reasonably anticipated future contributions and expense and
the interest rate sensitivity of the plan’s assets relative to that of the plan’s liabilities; and to generate investment
returns (net of operating costs) that meet or exceed a customized benchmark as defined in the plan investment
policy. Derivative instruments, are permissible for hedging and transactional efficiency, but only to the extent
that the derivative use enhances the efficient execution of the plan’s investment policy. The plan does not directly
invest in securities issued by the Corporation and its subsidiaries. The Corporation’s target allocations for plan
investments are 55 percent to 65 percent equity securities and 35 percent to 45 percent fixed income, including
cash. Equity securities include collective investment and mutual funds and common stock. Fixed income
securities include U.S. Treasury and other U.S. government agency securities, mortgage-backed securities,
corporate bonds and notes, municipal bonds, collateralized mortgage obligations and money market funds.

Fair Value Measurements

The Corporation’s qualified defined benefit pension plan utilizes fair value measurements to record fair
value adjustments and to determine fair value disclosures. The Corporation’s qualified benefit pension plan
categorizes investments recorded at fair value into a three-level hierarchy, based on the markets in which the
investment are traded and the reliability of the assumptions used to determine fair value. Refer to Note 3 for a
description of the three-level hierarchy.

Following is a description of the valuation methodologies and key inputs used to measure the fair value of
the Corporation’s qualified defined benefit pension plan investments, including an indication of the level of the
fair value hierarchy in which the investments are classified.

127

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Collective investment and mutual funds

Fair value measurement is based upon the NAV provided by the administrator of the fund. Mutual fund
NAVs are quoted in an active market exchange, such as the New York Stock Exchange, and are included in
Level 1 of the fair value hierarchy. Collective investment funds NAVs are based primarily on observable inputs,
generally the quoted prices for underlying assets owned by the fund, and are included in Level 2 of the fair value
hierarchy.

Common stock

Fair value measurement is based upon the closing price reported on the New York Stock Exchange. Level
1 common stock includes domestic and foreign stock and real estate investment trusts. Level 2 common stock
includes American Depositary Receipts.

U.S. Treasury and other U.S. government agency securities

Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair
values are measured using independent pricing models or other model-based valuation techniques, such as the
present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other
factors such as credit loss and liquidity assumptions. Level 1 securities include U.S. Treasury securities that are
traded by dealers or brokers in active over-the-counter markets. Level 2 securities include pooled Small Business
Administration loans.

Mortgage-backed securities

Fair value measurement is based upon quoted prices of securities with similar characteristics or pricing
models based on observable market data inputs, primarily interest rates, spreads and prepayment information and
are included in Level 2 of the fair value hierarchy.

Corporate and municipal bonds and notes

Fair value measurement is based upon quoted prices of securities with similar characteristics or pricing
models based on observable market data inputs, primarily interest rates, spreads and prepayment information.
Level 2 securities include corporate bonds, municipal bonds, other asset-backed securities and foreign bonds and
notes.

Collateralized mortgage obligations

Fair value measurement is based upon independent pricing models or other model-based valuation
techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment
assumptions and other factors, such as credit loss and liquidity assumptions, and is included in Level 2 of the fair
value hierarchy.

Private placements

Fair value is measured using the NAV provided by fund management as quoted prices in active markets
are not available. Management considers additional discounts to the provided NAV for market and credit risk.
Private placements are included in Level 3 of the fair value hierarchy.

Securities purchased under agreements to resell

Fair value measurement is based upon independent pricing models or other model-based valuation

techniques such as the present value of future cash flows, and is included in Level 2 of the fair value hierarchy.

Derivative instruments

The fair value of the Plan’s derivative instruments, which could include futures, forwards and/or swaps,
was determined using pricing models that use primarily market observable inputs, such as yield curves and
option volatilities, and include adjustments to reflect credit quality of the counterparty. Derivative instruments
are categorized as Level 2 in the fair value hierarchy.

128

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Fair Values

The fair values of the Corporation’s qualified defined benefit pension plan investments measured at fair
value on a recurring basis at December 31, 2010 and 2009, by asset category and level within the fair value
hierarchy, are detailed in the table below.

Total

Level 1

Level 2

Level 3

(in millions)

December 31, 2010
Equity securities:

Collective investment and mutual funds
Common stock

Fixed income securities:

U.S. Treasury and other U.S. government agency bonds
Corporate and municipal bonds and notes
Collective investments and mutual funds

Private placements
Other assets:
Derivatives

Total investments at fair value

December 31, 2009
Equity securities:

Collective investment and mutual funds
Common stock

Fixed income securities:

U.S. Treasury and other U.S. government agency bonds
Corporate and municipal bonds and notes
Collateralized mortgage obligations
Collective investments and mutual funds

Private placements
Other assets:

Securities purchased under agreement to resell
Derivatives

$

$

$

$

538
371

198
311
24
28

1

$

181
370

198
-
24
-

-

$

357
1

-
311
-
-

1

1,471

$

773

$

670

$

$

495
320

168
288
6
20
28

5
1

$

163
318

168
-
-
20
-

-
-

$

332
2

-
288
6
-
-

5
1

-
-

-
-
-
28

-

28

-
-

-
-
-
-
28

-
-

28

Total investments at fair value

$

1,331

$

669

$

634

$

The table below provides a summary of changes in the Corporation’s qualified defined benefit pension
plan’s Level 3 investments measured at fair value on a recurring basis for the years ended December 31, 2010
and 2009.

(in millions)

Year ended December 31, 2010
Private placements
Year ended December 31, 2009
Private placements

$

$

Balance at
Beginning
of Period

Gains (Losses)

Realized

Unrealized

Purchases

Sales

Balance at
End of Period

28 $

- $

- $

- $

1 $

1 $

10 $

33 $

(11)$

(6)$

28

28

There were no assets in the non-qualified defined benefit pension plan at December 31, 2010, and 2009.
The postretirement benefit plan is fully invested in bank-owned life insurance policies. The fair value of bank-
owned life insurance policies is based on the cash surrender values of the policies as reported by the insurance
companies and are classified in Level 2 of the fair value hierarchy.

129

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Cash Flows

Estimated future employer contributions were zero for the qualified and non-qualified defined benefit

pension plans and postretirement benefit plan for the year ended December 31, 2011.

(in millions)
Years Ended December 31

Estimated Future Benefit Payments
Non-Qualified
Defined Benefit
Pension Plan

Qualified
Defined Benefit
Pension Plan

Postretirement
Benefit Plan (a)

2011
2012
2013
2014
2015
2016 - 2020
(a) Estimated benefit payments in the postretirement benefit plan are net of estimated Medicare subsidies.

51
54
58
62
66
407

9
9
10
11
11
63

$

$

$

7
7
7
7
7
32

DEFINED CONTRIBUTION PLAN

Substantially all of the Corporation’s employees are eligible to participate in the Corporation’s principal
defined contribution plan (a 401(k) plan). Under this plan,
the Corporation makes core matching cash
contributions of 100 percent of the first four percent of qualified earnings contributed by employees (up to the
current IRS compensation limit), invested based on employee investment elections. Employee benefits expense
included expense for the plan of $19 million, $20 million and $22 million in the years ended December 31, 2010,
2009 and 2008, respectively.

The principal defined contribution plan includes a defined contribution feature for the benefit of
substantially all full-time employees hired on or after January 1, 2007. Under the defined contribution feature,
the Corporation makes an annual contribution to the individual account of each eligible employee ranging from
three percent to eight percent of annual compensation, determined based on combined age and years of service.
The contributions are invested based on employee investment elections. The employee fully vests in the defined
contribution account after three years of service. Before an employee is eligible to participate, the plan feature
requires the equivalent of six months of service. The Corporation recognized $3 million, $3 million and $2
million in employee benefits expense for this plan feature for the years ended December 31, 2010, 2009 and
2008, respectively.

DEFERRED COMPENSATION PLAN

The Corporation offers an optional deferred compensation plan under which certain employees may make
an irrevocable election to defer incentive compensation and/or a portion of base salary until retirement or
separation from the Corporation. The employee may direct deferred compensation into one or more deemed
investment options. Although not required to do so, the Corporation invests actual funds into the deemed
investments as directed by employees, resulting in a deferred compensation asset, recorded in “other short-term
investments” on the consolidated balance sheets that offsets the liability to employees under the plan, recorded in
“accrued expenses and other liabilities.” The earnings from the deferred compensation asset are recorded in
“interest on short-term investments” and “other noninterest income” and the related change in the liability to
employees under the plan is recorded in “salaries” expense on the consolidated statements of income.

NOTE 19 - INCOME TAXES AND TAX-RELATED ITEMS

The provision (benefit) for federal income taxes is computed by applying the statutory federal income tax
rate to income (loss) before income taxes as reported in the consolidated financial statements after deducting

130

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

non-taxable items, principally income on bank-owned life insurance, and deducting tax credits related to
investments in low income housing partnerships. Tax interest, state and foreign taxes are then added to the
federal tax provision.

In the ordinary course of business,

the Corporation enters into certain transactions that have tax
consequences. From time to time, the Internal Revenue Service (IRS) questions and/or challenges the tax
position taken by the Corporation with respect to those transactions. The Corporation believes that its tax returns
were filed based upon applicable statutes, regulations and case law in effect at the time of the transactions. The
IRS, an administrative authority or a court,
if presented with the transactions, could disagree with the
Corporation’s interpretation of the tax law. After evaluating the risks and opportunities, the best outcome may
result in a settlement. The ultimate outcome for each position is not known.

At December 31, 2010, net unrecognized tax benefits were $10 million, compared to net unrecognized tax
benefits of an insignificant amount at December 31, 2009. After consideration of the effect of the federal tax
benefit available on unrecognized state tax benefits, the total amount of unrecognized tax benefits that, if
recognized, would affect the Corporation’s effective tax rate was approximately $35 million at December 31,
2010 and $32 million at December 31, 2009.

Accrued interest and penalties, included in “accrued expenses and other liabilities” on the consolidated

balance sheets, were $5 million and $19 million at December 31, 2010 and 2009, respectively.

The Corporation recognized an expense of approximately $5 million in 2010 in interest and penalties on
income tax liabilities included in the “provision (benefit) for income taxes” on the consolidated statements of
income, compared with a benefit of approximately $19 million in 2009 and an expense of $8 million in 2008.

A reconciliation of the beginning and ending amount of unrecognized tax benefits follows:

(in millions)

Balance at January 1, 2010

Increases as a result of tax positions taken during a prior period
Increase related to settlements with tax authorities

Balance at December 31, 2010

Unrecognized
Tax Benefits

$

$

-
9
1

10

The Corporation anticipates that it is reasonably possible that settlements of federal and state tax issues
will result in a decrease in unrecognized tax benefits of approximately $2 million within the next twelve months.

During 2010, the IRS proposed an adjustment to taxable income for the years 2001-2006 which could
result in the repatriation of foreign earnings of a certain structured investment transaction. Repatriation of these
earnings could require the Corporation to pay income taxes of $53 million on foreign earnings of approximately
$146 million. The Corporation continues to believe that these foreign earnings were properly excluded from U.S.
taxation and has filed a protest to that effect with the IRS Appeals Office. The Corporation intends to reinvest
these earnings indefinitely and believes it is more likely than not that this tax position will be sustained. The
Corporation has reserved for this tax position accordingly.

Based on current knowledge and probability assessment of various potential outcomes, the Corporation
believes that current tax reserves are adequate to cover the matters outlined above, and the amount of any
incremental liability arising from these matters is not expected to have a material adverse effect on the
Corporation’s consolidated financial condition or results of operations. Probabilities and outcomes are reviewed
as events unfold, and adjustments to the reserves are made when necessary.

131

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The following tax years for significant jurisdictions remain subject to examination as of December 31,

2010:

Jurisdiction

Federal
California

Tax Years

2008-2009
2001-2009

In 2008, the Corporation reassessed the size and timing of the tax deductions related to the structured
leasing transactions discussed above which resulted in a $38 million ($24 million after-tax) charge to lease
income in the year ended December 31, 2008. The charges, unless the leases are terminated, will fully reverse
over the next 17 years.

The current and deferred components of the provision for income taxes for continuing operations were as

follows:

(in millions)
December 31

Current

Federal
Foreign
State and local
Total current

Deferred

Federal
State and local

Total deferred
Total

2010

2009

2008

$

$

239
6
12
257

(202)
-
(202)
55

$

$

(28) $
6
3
(19)

(102)
(10)
(112)
(131) $

126
10
22
158

(86)
(13)
(99)
59

Income from continuing operations before income taxes of $315 million for the year ended December 31,

2010, included $14 million of foreign-source income.

Income from discontinued operations, net of tax, included a provision for income taxes on discontinued
operations of $10 million, $1 million and $1 million for the years ended December 31, 2010, 2009 and 2008,
respectively. The income tax provision on securities transactions was $1 million, $85 million and $23 million for
the years ended December 31, 2010, 2009 and 2008, respectively.

132

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The principal components of deferred tax assets and liabilities were as follows:

(in millions)
December 31

Deferred tax assets:

Allowance for loan losses
Deferred loan origination fees and costs
Other comprehensive income
Foreign tax credit
Tax interest
Auction-rate securities
Other tax credits
Other temporary differences, net

Total deferred tax assets before valuation allowance

Valuation allowance

Total deferred tax assets, net of valuation allowance

Deferred tax liabilities:

Tax interest
Lease financing transactions
Allowance for depreciation
Employee benefits

Total deferred tax liabilities
Net deferred tax asset

2010

2009

$

315
30
221
14
-
12
51
65
708
-
708

(1)
(287)
(32)
(5)
(325)
383

$

344
27
192
13
7
24
-
72
679
(1)
678

-
(458)
(42)
(20)
(520)
158

$

$

Included in deferred tax assets at December 31, 2010 were $53 million of federal tax credits, the majority
of which expire in 2029. Deferred tax assets at December 31, 2010 also included net state tax credit carry-
forwards of $5 million which expire in 2027. At December 31, 2010, the Corporation determined that a valuation
allowance was not needed against the federal or state deferred tax assets. This determination was based on
sufficient taxable income in the carry-back period, and anticipated future events to absorb a significant portion of
the deferred tax assets. The remaining deferred tax assets will be absorbed by future reversals of existing taxable
temporary differences. At December 31, 2009, a valuation allowance of $1 million was recorded for certain state
deferred tax assets. For further information on the Corporation’s valuation policy for deferred tax assets, refer to
Note 1.

133

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

A reconciliation of expected income tax expense at the federal statutory rate of 35 percent to the

Corporation’s provision for income taxes for continuing operations and effective tax rate follows:

(dollar amounts in millions)
Years Ended December 31

2010
Amount Rate

2009

Amount

Rate

2008
Amount Rate

$

Tax based on federal statutory rate
State income taxes
Affordable housing and historic credits
Bank-owned life insurance
Disallowance of foreign tax credit
Termination of structured leasing transactions
Other changes in unrecognized tax benefits
Interest on income tax liabilities
Other

110
7
(49)
(15)
-
-
2
3
(3)

35.0 % $
2.4
(15.6)
(4.9)
-
-
0.6
1.0
(1.0)

(40)
(5)
(46)
(14)
-
(11)
1
(13)
(3)

35.0 % $
3.9
40.2
12.0
-
9.8
(1.1)
10.9
3.0

Provision (benefit) for income taxes

$

55

17.5 % $

(131) 113.7 % $

95
5
(45)
(15)
9
-
10
6
(6)

59

35.0 %
2.0
(16.5)
(5.5)
3.2
-
3.7
2.0
(2.2)

21.7 %

NOTE 20 - TRANSACTIONS WITH RELATED PARTIES

The Corporation’s banking subsidiaries had, and expect to have in the future, transactions with the
Corporation’s directors and executive officers, companies with which these individuals are associated, and
certain related individuals. Such transactions were made in the ordinary course of business and included
extensions of credit, leases and professional services. With respect to extensions of credit, all were made on
substantially the same terms, including interest rates and collateral, as those prevailing at the same time for
comparable transactions with other customers and did not, in management’s opinion, involve more than normal
risk of collectibility or present other unfavorable features. The aggregate amount of loans attributable to persons
who were related parties at December 31, 2010, totaled $342 million at the beginning of 2010 and $288 million
at the end of 2010. During 2010, new loans to related parties aggregated $569 million and repayments totaled
$623 million.

NOTE 21 - REGULATORY CAPITAL AND RESERVE REQUIREMENTS

Reserves required to be maintained and/or deposited with the FRB are classified in interest-bearing
deposits with banks. These reserve balances vary, depending on the level of customer deposits in the
Corporation’s banking subsidiaries. The average required reserve balances were $311 million and $290 million
for the years ended December 31, 2010 and 2009, respectively.

Banking regulations limit the transfer of assets in the form of dividends, loans or advances from the bank
subsidiaries to the parent company. Under the most restrictive of these regulations, the aggregate amount of
dividends which can be paid to the parent company without obtaining prior approval from bank regulatory
agencies approximated $364 million at January 1, 2011, plus 2011 net profits. Substantially all the assets of the
Corporation’s banking subsidiaries are restricted from transfer to the parent company of the Corporation in the
form of loans or advances.

The Corporation’s subsidiary banks declared dividends of $28 million, $49 million and $264 million in

2010, 2009 and 2008, respectively, without the need for prior regulatory approvals.

The Corporation and its U.S. banking subsidiaries are subject to various regulatory capital requirements
administered by federal and state banking agencies. Quantitative measures established by regulation to ensure
capital adequacy require the maintenance of minimum amounts and ratios of Tier 1 and total capital (as defined

134

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

in the regulations) to average and risk-weighted assets. Failure to meet minimum capital requirements can initiate
certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a
direct material effect on the Corporation’s financial statements. At December 31, 2010 and 2009, the Corporation
and its U.S. banking subsidiaries exceeded the ratios required for an institution to be considered “well
capitalized” (total risk-based capital, Tier 1 risk-based capital and leverage ratios greater than 10 percent, six
percent and five percent, respectively). There have been no conditions or events since December 31, 2010 that
management believes have changed the capital adequacy classification of the Corporation or its U.S. banking
subsidiaries.

The following is a summary of the capital position of the Corporation and Comerica Bank, its principal

banking subsidiary.

(dollar amounts in millions)

December 31, 2010

Tier 1 capital (minimum-$2.4 billion (Consolidated))
Total capital (minimum-$4.8 billion (Consolidated))
Risk-weighted assets
Average assets (fourth quarter)

Tier 1 capital to risk-weighted assets (minimum-4.0%)
Total capital to risk-weighted assets (minimum-8.0%)
Tier 1 capital to average assets (minimum-3.0%)

December 31, 2009

Tier 1 capital (minimum-$2.5 billion (Consolidated))
Total capital (minimum-$4.9 billion (Consolidated))
Risk-weighted assets
Average assets (fourth quarter)

Tier 1 capital to risk-weighted assets (minimum-4.0%)
Total capital to risk-weighted assets (minimum-8.0%)
Tier 1 capital to average assets (minimum-3.0%)

NOTE 22 - CONTINGENT LIABILITIES

LEGAL PROCEEDINGS

Comerica Incorporated
(Consolidated)

Comerica
Bank

$

$

$

$

6,027
8,651
59,506
53,541

10.13 %
14.54
11.26

7,704
10,468
61,815
58,153

6,073
8,455
59,278
53,306

10.24 %
14.26
11.39

5,763
8,226
61,566
57,837

12.46 %
16.93
13.25

9.36 %
13.36
9.96

The Corporation and certain of its subsidiaries are subject to various pending or threatened legal
proceedings arising out of the normal course of business or operations. The Corporation believes it has
meritorious defenses to the claims asserted against it in its currently outstanding legal proceedings and, with
respect to such legal proceedings, intends to continue to defend itself vigorously, litigating or settling cases
according to management’s judgment as to what is in the best interests of the Corporation and its shareholders.
On at least a quarterly basis, the Corporation assesses its liabilities and contingencies in connection with
outstanding legal proceedings utilizing the latest information available. On a case-by-case basis, reserves are
established for those legal claims for which it is probable that a loss will be incurred and the amount of such loss
can be reasonably estimated. The actual costs of resolving these claims may be substantially higher or lower than
the amounts reserved. Litigation-related expense of $2 million and an insignificant amount was included in
“litigation and operational losses” on the consolidated statements of income in 2010 and 2009, respectively.
Based on current knowledge, and after consultation with legal counsel, management believes that current
reserves are adequate, and the amount of any incremental liability arising from these matters is not expected to
have a material adverse effect on the Corporation’s consolidated financial condition.

135

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The damages alleged by plaintiffs or claimants may be overstated, unsubstantiated by legal theory,
unsupported by the facts, and/or bear no relation to the ultimate award that a court, jury or agency might impose.
In view of the inherent difficulty of predicting the outcome of such matters, the Corporation cannot state with
confidence a range of reasonably possible losses, nor what the eventual outcome of these matters will be.
However, based on current knowledge and after consultation with legal counsel, management believes the
maximum amount of reasonably possible losses would not have a material adverse effect on the Corporation’s
consolidated financial condition.

For information regarding income tax contingencies, refer to Note 19.

NOTE 23 - BUSINESS SEGMENT INFORMATION

The Corporation has strategically aligned its operations into three major business segments: the Business
Bank, the Retail Bank, and Wealth & Institutional Management. These business segments are differentiated
based on the type of customer and the related products and services provided. In addition to the three major
business segments, the Finance Division is also reported as a segment. Business segment results are produced by
the Corporation’s internal management accounting system. This system measures financial results based on the
internal business unit structure of the Corporation. Information presented is not necessarily comparable with
similar information for any other financial institution. The management accounting system assigns balance sheet
and income statement items to each business segment using certain methodologies, which are regularly reviewed
and refined. For comparability purposes, amounts in all periods are based on business segments and
methodologies in effect at December 31, 2010. These methodologies, which are briefly summarized in the
following paragraph, may be modified as management accounting systems are enhanced and changes occur in
the organizational structure or product lines.

The Corporation’s internal funds transfer pricing system records cost of funds or credit for funds using a
combination of matched maturity funding for certain assets and liabilities and a blended rate based on various
maturities for the remaining assets and liabilities. The allowance for loan losses is allocated to the business
segments based on the methodology used to estimate the consolidated allowance for loan losses described in
Note 1. The related provision for loan losses is assigned based on the amount necessary to maintain an allowance
for loan losses adequate for each business segment. Noninterest income and expenses directly attributable to a
line of business are assigned to that business segment. Direct expenses incurred by areas whose services support
the overall Corporation are allocated to the business segments as follows: product processing expenditures are
allocated based on standard unit costs applied to actual volume measurements; administrative expenses are
allocated based on estimated time expended; and corporate overhead is assigned 50 percent based on the ratio of
the business segment’s noninterest expenses to total noninterest expenses incurred by all business segments and
50 percent based on the ratio of the business segment’s attributed equity to total attributed equity of all business
segments. Equity is attributed based on credit, operational and interest rate risks. Most of the equity attributed
relates to credit risk, which is determined based on the credit score and expected remaining life of each loan,
letter of credit and unused commitment recorded in the business segments. Operational risk is allocated based on
loans and letters of credit, deposit balances, non-earning assets,
trust assets under management, certain
noninterest income items, and the nature and extent of expenses incurred by business units. Virtually all interest
rate risk is assigned to Finance, as are the Corporation’s hedging activities.

The following discussion provides information about

the activities of each business segment. A
discussion of the financial results and the factors impacting 2010 performance can be found in the section
entitled “Business Segments” in the financial review.

136

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The Business Bank is primarily composed of the following businesses: Middle Market, Commercial Real
Estate, National Dealer Services, International Finance, Global Corporate, Leasing, Financial Services, and
Technology and Life Sciences. This business segment meets the needs of medium-size businesses, multinational
corporations and governmental entities by offering various products and services, including commercial loans
and lines of credit, deposits, cash management, capital market products, international trade finance, letters of
credit, foreign exchange management services and loan syndication services.

The Retail Bank includes small business banking and personal financial services, consisting of consumer
lending, consumer deposit gathering and mortgage loan origination. In addition to a full range of financial
services provided to small business customers, this business segment offers a variety of consumer products,
including deposit accounts, installment loans, credit cards, student loans, home equity lines of credit and
residential mortgage loans.

Wealth & Institutional Management offers products and services consisting of fiduciary services, private
banking, retirement services, investment management and advisory services, investment banking and discount
securities brokerage services. This business segment also offers the sale of annuity products, as well as life,
disability and long-term care insurance products.

The Finance segment includes the Corporation’s securities portfolio and asset and liability management
activities. This segment is responsible for managing the Corporation’s funding, liquidity and capital needs,
performing interest sensitivity analysis and executing various strategies to manage the Corporation’s exposure to
liquidity, interest rate risk and foreign exchange risk.

The Other category includes discontinued operations, the income and expense impact of equity and cash,

tax benefits not assigned to specific business segments and miscellaneous other expenses of a corporate nature.

137

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

Business segment financial results are as follows:

(dollar amounts in millions)
Year Ended December 31, 2010

Business
Bank

Retail
Bank

Wealth &
Institutional
Management

Finance

Other

Total

Earnings summary:
Net interest income (expense) (FTE)
Provision for loan losses
Noninterest income
Noninterest expenses
Provision (benefit) for income taxes (FTE)
Income from discontinued operations,

net of tax

Net income (loss)
Net credit-related charge-offs

Selected average balances:
Assets
Loans
Deposits
Liabilities
Attributed equity

Statistical data:
Return on average assets (a)
Return on average attributed equity
Net interest margin (b)
Efficiency ratio

$

$
$

$

1,370
286
303
632
226

-
529
424

$

$
$

$

531
105
174
648
(17)

-
(31) $
$
88

$

30,673
30,286
19,001
18,979
3,047

$ 5,865
5,386
16,974
16,937
620

1.73 % (0.18) %
17.38
4.52
37.77

(5.02)
3.13
91.26

$

170
90
240
324
(1)

-

(3) $
$
52

(424) $
-
60
18
(148)

-
(234) $
$
-

4
(1)
12
18
-

17
16
-

$

$

4,863
4,819
2,762
2,744
399

(0.06) %
(0.77)
3.53
80.52

9,256
26
638
9,917
1,010

n/m
n/m
n/m
n/m

4,896
-
111
908
992

n/m
n/m
n/m
n/m

$

$
$

$

1,651
480
789
1,640
60

17
277
564

55,553
40,517
39,486
49,485
6,068

0.50 %
2.74
3.24
67.30

Year Ended December 31, 2009

Earnings summary:
Net interest income (expense) (FTE)
Provision for loan losses
Noninterest income
Noninterest expenses
Provision (benefit) for income taxes (FTE)
Income from discontinued operations,

net of tax

Net income (loss)
Net credit-related charge-offs

Selected average balances:
Assets
Loans
Deposits
Liabilities
Attributed equity

Statistical data:
Return on average assets (a)
Return on average attributed equity
Net interest margin (b)
Efficiency ratio
(Table continues on following page)

Business
Bank

Retail
Bank

Wealth &
Institutional
Management

Finance

Other

Total

$

$
$

$

1,328
860
291
638
(26)

-
147
712

$

$
$

$

510
143
190
642
(37)

-
(48) $
$
119

$

36,102
35,402
15,395
15,605
3,385

$ 6,566
6,007
17,409
17,378
635

$

$
$

$

161
62
269
302
23

-
43
38

4,883
4,758
2,654
2,645
365

(461) $
-
292
17
(76)

-
(110) $
$
-

$

37
17
8
51
(7)

1
(15) $
$
-

1,575
1,082
1,050
1,650
(123)

1
17
869

$

11,777
1
4,564
19,586
1,043

$

3,481
(6)
69
496
1,671

62,809
46,162
40,091
55,710
7,099

0.41 % (0.27) %
4.35
3.75
39.40

(7.63)
2.93
91.69

0.87 %
11.71
3.35
72.60

n/m
n/m
n/m
n/m

n/m
n/m
n/m
n/m

0.03 %
(2.37)
2.72
69.25

138

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

(dollar amounts in millions)
Year Ended December 31, 2008

Business
Bank

Retail
Bank

Wealth &
Institutional

Management (c) Finance

Other

Total

Earnings summary:
Net interest income (expense) (FTE)
Provision for loan losses
Noninterest income
Noninterest expenses
Provision (benefit) for income

taxes (FTE)

Income from discontinued operations,

net of tax

Net income (loss)
Net credit-related charge-offs

Selected average balances:
Assets
Loans
Deposits
Liabilities
Attributed equity

$

$
$

$

$

$
$

$

1,277
543
302
709

90

-
237
392

$

$
$

566
123
258
645

22

-
34
64

41,786
40,867
14,993
15,706
3,276

$ 7,074
6,342
16,965
16,961
676

$

148
25
292
422

(3)

-

(4) $
$
16

(147) $
-
68
11

(42)

-
(48) $
$
-

(23) $
(5)
(27)
(36)

1,821
686
893
1,751

(2)

1
(6) $
$

-

65

1
213
472

$

4,689
4,542
2,433
2,451
336

$

10,011
1
7,252
23,893
927

1,625
13
360
732
227

$ 65,185
51,765
42,003
59,743
5,442

Statistical data:
0.33 %
Return on average assets (a)
3.79
4.98
Return on average attributed equity
3.02
3.34
Net interest margin (b)
66.17
83.21
Efficiency ratio
(a) Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity.
(b) Net interest margin is calculated based on the greater of average earning assets or average deposits and purchased funds.
(c) 2008 included an $88 million net charge ($56 million, after-tax) related to the repurchase of auction-rate securities from

0.57 % 0.19 %
7.24
3.12
45.29

(0.09) %
(1.31)
3.23
96.97

n/m
n/m
n/m
n/m

n/m
n/m
n/m
n/m

customers.

FTE - Fully Taxable Equivalent
n/m – not meaningful

The Corporation’s management accounting system also produces market segment results for the
Corporation’s four primary geographic markets: Midwest, Western, Texas, and Florida. In addition to the four
primary geographic markets, Other Markets and International are also reported as market segments. Market
segment results are provided as supplemental information to the business segment results and may not meet all
operating segment criteria as set forth in ASC Topic 280, Segment Reporting. The following discussion provides
information about the activities of each market segment. A discussion of the financial results and the factors
impacting 2010 performance can be found in the section entitled “Geographic Market Segments” in the financial
review.

The Midwest market consists of operations located in the states of Michigan, Ohio and Illinois. Currently,

Michigan operations represent the significant majority of this geographic market.

The Western market consists of the states of California, Arizona, Nevada, Colorado and Washington.

Currently, California operations represent the significant majority of the Western market.

The Texas and Florida markets consist of operations located in the states of Texas and Florida,

respectively.

Other Markets include businesses with a national perspective, the Corporation’s investment management
and trust alliance businesses as well as activities in all other markets in which the Corporation has operations,
except for the International market, as described below.

139

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

The International market represents the activity of the Corporation’s International Finance division,
which provides banking services primarily to foreign-owned, North American-based companies and secondarily
to international operations of North American-based companies.

The Finance & Other Businesses segment includes the Corporation’s securities portfolio, asset and
liability management activities, discontinued operations, the income and expense impact of equity and cash not
assigned to specific business/market segments, tax benefits not assigned to specific business/market segments
and miscellaneous other expenses of a corporate nature. This segment includes responsibility for managing the
Corporation’s funding, liquidity and capital needs, performing interest sensitivity analysis and executing various
strategies to manage the Corporation’s exposure to liquidity, interest rate risk and foreign exchange risk.

The Corporation’s total revenues from customers and long-lived assets (excluding certain intangible
assets) located in foreign countries in which the Corporation holds assets were less than five percent of the
Corporation’s consolidated revenues and long-lived assets (excluding certain intangible assets) in each of the
years ended December 31, 2010, 2009 and 2008.

Market segment financial results are as follows:

(dollar amounts
in millions)
Year Ended
December 31, 2010

Earnings summary:
Net interest income
(expense) (FTE)
Provision for loan

losses

Noninterest income
Noninterest expenses
Provision (benefit) for
income taxes (FTE)

Income from

discontinued
operations, net of
tax

Net income (loss)
Net credit-related
charge-offs
Selected average

balances:

Assets
Loans
Deposits
Liabilities
Attributed equity

Statistical data:
Return on average

assets (a)

Midwest Western

Texas

Florida

Other
Markets

International

Finance
& Other
Businesses

Total

$

816 $

639 $

318 $

43 $

182 $

73 $

(420) $

1,651

199
397
751

92

148
135
432

80

48
91
253

38

33
14
44

(7)

60
45
90

(23)

(7)
35
34

28

(1)
72
36

480
789
1,640

(148)

60

$

$

$

-
171 $

-
114 $

-
70 $

-
(13) $

-
100 $

-
53 $

17
(218) $

211 $

212 $

47 $

30 $

59 $

5 $

- $

17
277

564

14,694 $
14,510
17,697
17,681
1,427

12,904 $
12,705
12,031
11,958
1,320

6,687 $
6,480
5,320
5,309
667

1,567 $
1,578
376
363
164

3,922 $
3,653
2,160
2,193
340

1,627 $
1,565
1,153
1,156
148

14,152 $
26
749
10,825
2,002

55,553
40,517
39,486
49,485
6,068

0.90 % 0.86 % 1.04 % (0.86) % 2.56 %

3.23 % n/m

0.50 %

Return on average
attributed equity
Net interest margin (b)
Efficiency ratio
(Table continues on following page)

12.03
4.59
61.69

8.68
5.03
55.75

10.43
4.90
61.88

(8.20)
2.68
77.99

29.54
5.02
40.84

35.50
4.54
31.55

n/m
n/m
n/m

2.74
3.24
67.30

140

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

(dollar amounts in millions)
Year Ended
December 31, 2009

Earnings summary:
Net interest income
(expense) (FTE)

Provision for loan losses
Noninterest income
Noninterest expenses
Provision (benefit) for income

taxes (FTE)

Income from discontinued
operations, net of tax

Net income (loss)

Net credit-related charge-offs

Selected average balances:
Assets
Loans
Deposits
Liabilities
Attributed equity

Statistical data:
Return on average assets (a)
Return on average attributed equity
Net interest margin (b)
Efficiency ratio

Year Ended
December 31, 2008

Earnings summary:
Net interest income
(expense) (FTE)

Provision for loan losses
Noninterest income
Noninterest expenses
Provision (benefit) for income

taxes (FTE)

Income from discontinued
operations, net of tax

Net income (loss)

Net credit-related charge-offs

Selected average balances:
Assets
Loans
Deposits
Liabilities
Attributed equity

Statistical data:
Return on average assets (a)
Return on average attributed equity
Net interest margin (b)
Efficiency ratio

Midwest Western Texas Florida

Other
Markets

International

Finance
& Other
Businesses Total

$

$

$

$

801
437
434
758

-

-

40

345

$

$

623
358
133
434

(20)

-

(16)

327

$ 298
85
86
238

21

-

40

53

$

$

$

$

$

44
59
12
37

(17)

-

(23)

48

$ 17,203
16,592
17,105
17,323
1,557

$ 14,479
14,281
11,104
11,022
1,378

$7,604
7,384
4,512
4,516
697

$ 1,741
1,745
311
300
173

$

$

$

$

164
93
52
84

(38)

-

77

78

4,570
4,256
1,598
1,650
416

$

$

$

$

69
33
33
31

14

-

24

18

$

$

$

(424)
17
300
68

$ 1,575
1,082
1,050
1,650

(83)

(123)

1

(125)

-

1

17

869

$

$

$62,809
46,162
40,091
55,710
7,099

1,954
1,909
828
817
164

$ 15,258
(5)
4,633
20,082
2,714

0.21 % (0.11) % 0.52 % (1.34) %
2.60
4.68
61.33

(13.54)
2.50
66.96

(1.17)
4.36
57.46

5.65
4.03
61.93

1.67 %

1.25 %

18.41
3.85
41.82

14.93
3.53
30.31

n/m
n/m
n/m
n/m

0.03 %
(2.37)
2.72
69.25

Midwest Western Texas Florida

Other
Markets (c)

International

Finance
& Other
Businesses Total

$

$

$

771
155
523
809

126

-

204

152

$

668
379
139
450

(2)

-

$

$

(20)

241

$

$

$ 292
51
94
246

36

-

53

25

$

$

$

47
40
16
42

(6)

-

(13)

27

$ 19,438
18,719
16,026
16,658
1,634

$ 16,855
16,565
11,918
11,894
1,339

$8,039
7,776
4,023
4,040
627

$ 1,896
1,892
288
283
130

$

$

$

$

152
62
49
188

(63)

-

14

26

4,972
4,560
1,387
1,493
401

$

$

$

$

61
4
31
41

18

-

29

1

$

$

$

(170)
(5)
41
(25)

(44)

1

(54)

-

2,349
2,239
749
750
157

$ 11,636
14
7,612
24,625
1,154

$ 1,821
686
893
1,751

65

1

213

472

$

$

$65,185
51,765
42,003
59,743
5,442

1.05 % (0.12) % 0.66 % (0.70) %
12.46
4.10
65.32

(10.26)
2.46
67.78

(1.52)
4.03
55.97

8.45
3.74
64.60

0.29 %
3.58
3.30
95.59

1.25 %

18.69
2.66
43.80

n/m
n/m
n/m
n/m

0.33 %
3.79
3.02
66.17

(a) Return on average assets is calculated based on the greater of average assets or average liabilities and attributed equity.
(b) Net interest margin is calculated based on the greater of average earning assets or average deposits and purchased funds.
(c) 2008 included an $88 million net charge ($56 million, after-tax) related to the repurchase of auction-rate securities from customers.
FTE—Fully Taxable Equivalent
n/m – not meaningful

141

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 24 - PARENT COMPANY FINANCIAL STATEMENTS

BALANCE SHEETS - COMERICA INCORPORATED

(in millions, except share data)
December 31

Assets
Cash and due from subsidiary bank
Short-term investments with subsidiary bank
Other short-term investments
Investment in subsidiaries, principally banks
Premises and equipment
Other assets

Total assets

Liabilities and Shareholders’ Equity
Medium- and long-term debt
Other liabilities

Total liabilities

Fixed rate cumulative perpetual preferred stock, series F, no par value, $1,000

liquidation value per share:

Authorized—2,250,000 shares
Issued—2,250,000 shares at 12/31/09

Common stock—$5 par value:

2010

2009

$

$

$

$

$

$

-
327
86
5,957
4
181

6,555

635
127

762

5
2,150
86
5,710
4
186

8,141

986
126

1,112

-

2,151

Authorized—325,000,000 shares
Issued—203,878,110 shares at 12/31/10 and 178,735,252 shares at 12/31/09

Capital surplus
Accumulated other comprehensive loss
Retained earnings
Less cost of common stock in treasury—27,342,518 shares at 12/31/10 and 27,555,623

shares at 12/31/09

Total shareholders’ equity

1,019
1,481
(389)
5,247

(1,565)

5,793

Total liabilities and shareholders’ equity

$

6,555

$

894
740
(336)
5,161

(1,581)

7,029

8,141

142

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

STATEMENTS OF INCOME - COMERICA INCORPORATED

(in millions)
Years Ended December 31

Income
Income from subsidiaries

Dividends from subsidiaries
Other interest income
Intercompany management fees

Other noninterest income

Total income

Expenses
Interest on medium- and long-term debt
Salaries and employee benefits
Net occupancy expense
Equipment expense
Other noninterest expenses

Total expenses

Income (loss) before provision (benefit) for income taxes and equity in

undistributed earnings of subsidiaries

Provision (benefit) for income taxes

Income (loss) before equity in undistributed earnings of subsidiaries
Equity in undistributed earnings (losses) of subsidiaries, principally banks
Net income
Less:

Preferred stock dividends
Income allocated to participating securities

2010

2009

2008

$

34
1
104
5

144

30
105
8
1
56

200

(56)
(31)

(25)
302

277

123
1

$

59
4
44
6

$ 267
4
156
(32)

113

395

42
88
9
1
47

50
74
8
1
55

187

188

(74)
(47)

(27)
44

17

134
1

207
(25)

232
(19)

213

17
4

Net income (loss) attributable to common shares

$ 153

$ (118) $ 192

143

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

STATEMENTS OF CASH FLOWS - COMERICA INCORPORATED

(in millions)
Years Ended December 31

Operating Activities
Net income
Adjustments to reconcile net income to net cash provided by

operating activities:

Undistributed (earnings) losses of subsidiaries, principally

banks

Depreciation and software amortization
Share-based compensation expense
Provision (benefit) for deferred income taxes
Excess tax benefits from share-based compensation

arrangements

Other, net

Net cash provided by operating activities

Investing Activities
Net proceeds from private equity and venture capital investments
Net increase in fixed assets

Net cash provided by investing activities

Financing Activities
Proceeds from issuance of medium- and long-term debt
Repayment of medium- and long-term debt
Proceeds from issuance of common stock
Redemption of preferred stock
Proceeds from issuance of preferred stock and related warrant
Proceeds from issuance of common stock under employee stock

plans

Excess tax benefits from share-based compensation arrangements
Purchase of common stock for treasury
Dividends paid on common stock
Dividends paid on preferred stock

Net cash (used in) provided by financing activities

Net (decrease) increase in cash and cash equivalents
Cash and cash equivalents at beginning of year

Cash and cash equivalents at end of year

Interest paid

Income taxes recovered

2010

2009

2008

$

277

$

17

$

213

(302)
1
12
3

(1)
18

8

3
-

3

298
(666)
849
(2,250)
-

5
1
(4)
(34)
(38)

(1,839)

(1,828)
2,155

$

$

$

327

$

40
$
(35) $

(44)
1
12
1

-
14

1

-
-

-

-
-
-

-

-
-
(1)
(72)
(113)

(186)

(185)
2,340

2,155

44

$

$

(45) $

19
1
18
(10)

-
19

260

2
(2)

-

-
-
-

2,250

1
-
(1)
(395)
-

1,855

2,115
225

2,340

51

(3)

144

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

NOTE 25 - SALE OF BUSINESS/DISCONTINUED OPERATIONS

In December 2006, the Corporation sold its ownership interest in Munder Capital Management (Munder)

to an investor group. The sale agreement included an interest-bearing contingent note.

In the first quarter 2010, the Corporation and the investor group that acquired Munder negotiated a cash
settlement of the note receivable for $35 million, which resulted in a $27 million gain ($17 million, after tax),
recorded in “income from discontinued operations, net of tax” on the consolidated statements of income. The
settlement paid the note in full and concluded the Corporation’s financial arrangements with Munder.

The components of net income from discontinued operations for year ended December 31, 2010, 2009

and 2008 are shown in the following table.

(in millions, except per share data)
Income from discontinued operations before income taxes
Provision for income taxes
Net income from discontinued operations
Earnings per common share from discontinued operations:

Basic
Diluted

2010

2009

2008

$

$

$

27
10
17

0.11
0.10

$

$

$

$

$

$

2
1
1

0.01
0.01

2
1
1

0.01
-

NOTE 26 - SUMMARY OF QUARTERLY FINANCIAL STATEMENTS (UNAUDITED)

The following quarterly information is unaudited. However,

the
information reflects all adjustments, which are necessary for the fair presentation of the results of operations, for
the periods presented.

in the opinion of management,

(in millions, except per share data)

Interest income
Interest expense
Net interest income
Provision for loan losses
Net securities gains
Noninterest income (excluding net securities gains)
Noninterest expenses
Provision (benefit) for income taxes
Income from continuing operations
Income from discontinued operations, net of tax
Net income
Less:

Preferred stock dividends
Income allocated to participating securities
Net income (loss) attributable to common shares
Basic earnings per common share:

Income (loss) from continuing operations
Net income (loss)

Diluted earnings per common share:

Income (loss) from continuing operations
Net income (loss)

145

Fourth
Quarter
445
$
40
405
57
-
215
437
30
96
-
96

2010

Third
Quarter
456
$
52
404
122
-
186
402
7
59
-
59

Second
Quarter
476
$
54
422
126
1
193
397
23
70
-
70

First
Quarter
476
$
61
415
175
2
192
404
(5)
35
17
52

$

$

$

$

-
1
95

0.54
0.54

0.53
0.53

-
-
59

0.34
0.34

0.33
0.33

$

$

-
1
69

$

123
-
(71)

0.40
0.40

$ (0.57)
(0.46)

0.39
0.39

(0.57)
(0.46)

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
Comerica Incorporated and Subsidiaries

(in millions, except per share data)

Interest income
Interest expense

Net interest income
Provision for loan losses
Net securities gains
Noninterest income (excluding net securities gains)
Noninterest expenses
Provision (benefit) for income taxes

Income (loss) from continuing operations
Income from discontinued operations, net of tax
Net income (loss)
Less:

Preferred stock dividends
Income allocated to participating securities

2009

Fourth
Quarter

Third
Quarter

Second
Quarter

First
Quarter

$

$

479
83

396
256
10
204
425
(42)

(29)
-
(29)

33
-

$

511
126

385
311
107
208
399
(29)

19
-
19

34
1

$

552
150

402
312
113
185
429
(59)

18
-
18

34
-

563
179

384
203
13
210
397
(1)

8
1
9

33
-

Net loss attributable to common shares

$

(62) $

(16) $

(16) $

(24)

Basic earnings per common share:
Loss from continuing operations
Net loss

Diluted earnings per common share:
Loss from continuing operations
Net loss

$ (0.42) $ (0.10) $ (0.11) $ (0.17)
(0.16)

(0.42)

(0.10)

(0.11)

(0.42)
(0.42)

(0.10)
(0.10)

(0.11)
(0.11)

(0.17)
(0.16)

146

REPORT OF MANAGEMENT

The management of Comerica Incorporated (the Corporation) is responsible for the accompanying
consolidated financial statements and all other financial information in this Annual Report. The consolidated
financial statements have been prepared in conformity with U.S. generally accepted accounting principles and
include amounts which of necessity are based on management’s best estimates and judgments and give due
consideration to materiality. The other financial information herein is consistent with that in the consolidated
financial statements.

In meeting its responsibility for the reliability of the consolidated financial statements, management
develops and maintains effective internal controls, including those over financial reporting, as defined in the
Securities and Exchange Act of 1934, as amended. The Corporation’s internal control over financial reporting
includes policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail,
accurately and fairly reflect the transactions and dispositions of the assets of the Corporation; (2) provide
reasonable assurance that transactions are recorded as necessary to permit preparation of the consolidated
financial statements in conformity with U.S. generally accepted accounting principles, and that receipts and
expenditures of the Corporation are made only in accordance with authorizations of management and directors of
the Corporation; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized
acquisition, use or disposition of the Corporation’s assets that could have a material effect on the consolidated
financial statements.

Management assessed, with participation of the Corporation’s Chief Executive Officer and Chief
Financial Officer, internal control over financial reporting as it relates to the Corporation’s consolidated financial
statements presented in conformity with U.S. generally accepted accounting principles as of December 31, 2010.
The assessment was based on criteria for effective internal control over financial reporting described in Internal
Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway
Commission (COSO). Based on this assessment, management determined that internal control over financial
reporting is effective as it relates to the Corporation’s consolidated financial statements presented in conformity
with U.S. generally accepted accounting principles as of December 31, 2010.

Because of inherent limitations, internal control over financial reporting may not prevent or detect
misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to risk that
controls may become inadequate because of changes in conditions, or that the degree of compliance with the
policies or procedures may deteriorate.

The consolidated financial statements as of December 31, 2010 were audited by Ernst & Young LLP, an
independent registered public accounting firm. The audit was conducted in accordance with the standards of the
Public Company Accounting Oversight Board (United States), which required the independent public
accountants to obtain reasonable assurance about whether the consolidated financial statements are free of
material misstatement and whether effective internal control over financial reporting is maintained in all material
respects.

The Corporation’s Board of Directors oversees management’s internal control over financial reporting
and financial reporting responsibilities through its Audit Committee as well as various other committees. The
Audit Committee, which consists of directors who are not officers or employees of the Corporation, meets
regularly with management, internal audit and the independent public accountants to assure that the Audit
their
Committee, management,
responsibilities, and to review auditing, internal control and financial reporting matters.

internal auditors and the independent public accountants are carrying out

Ralph W. Babb Jr.
Chairman, President and
Chief Executive Officer

Elizabeth S. Acton
Executive Vice President and
Chief Financial Officer

Muneera S. Carr
Senior Vice President and
Chief Accounting Officer

147

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Board of Directors and Shareholders
Comerica Incorporated

We have

Incorporated’s

audited Comerica

reporting as of
December 31, 2010, based on criteria established in Internal Control—Integrated Framework issued by the
Committee of Sponsoring Organizations of
the Treadway Commission (the COSO criteria). Comerica
Incorporated’s management is responsible for maintaining effective internal control over financial reporting, and
for its assessment of the effectiveness of internal control over financial reporting included in the accompanying
Report of Management. Our responsibility is to express an opinion on the Corporation’s internal control over
financial reporting based on our audit.

control over

financial

internal

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight
Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance
about whether effective internal control over financial reporting was maintained in all material respects. Our
audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a
material weakness exists, testing and evaluating the design and operating effectiveness of internal control based
on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We
believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable
assurance regarding the reliability of financial reporting and the preparation of financial statements for external
purposes in accordance with generally accepted accounting principles. A company’s internal control over
financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in
reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Corporation;
(2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial
statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the
Corporation are being made only in accordance with authorizations of management and directors of the
Corporation; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized
acquisition, use, or disposition of the Corporation’s assets that could have a material effect on the financial
statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect
misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that
controls may become inadequate because of changes in conditions, or that the degree of compliance with the
policies or procedures may deteriorate.

In our opinion, Comerica Incorporated maintained, in all material respects, effective internal control over

financial reporting as of December 31, 2010, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight
Board (United States), the 2010 consolidated financial statements of Comerica Incorporated and subsidiaries and
our report dated February 28, 2011 expressed an unqualified opinion thereon.

Dallas, Texas
February 28, 2011

148

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Board of Directors and Shareholders
Comerica Incorporated

We have audited the accompanying consolidated balance sheets of Comerica Incorporated and
subsidiaries as of December 31, 2010 and 2009, and the related consolidated statements of income, shareholders’
equity, and cash flows for each of the three years in the period ended December 31, 2010. These financial
statements are the responsibility of the Corporation’s management. Our responsibility is to express an opinion on
these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight
Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance
about whether the financial statements are free of material misstatement. An audit includes examining, on a test
basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by management, as well as evaluating
the overall financial statement presentation. We believe that our audits provide a reasonable basis for our
opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the
consolidated financial position of Comerica Incorporated and subsidiaries at December 31, 2010 and 2009, and
the consolidated results of their operations and their cash flows for each of the three years in the period ended
December 31, 2010, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight
Board (United States), Comerica Incorporated’s internal control over financial reporting as of December 31,
2010, based on criteria established in “Internal Control-Integrated Framework” issued by the Committee of
Sponsoring Organizations of the Treadway Commission and our report dated February 28, 2011, expressed an
unqualified opinion thereon.

Dallas, Texas
February 28, 2011

149

HISTORICAL REVIEW – AVERAGE BALANCE SHEETS
Comerica Incorporated and Subsidiaries

CONSOLIDATED FINANCIAL INFORMATION

(in millions)
Years Ended December 31

ASSETS
Cash and due from banks

Federal funds sold and securities purchased

under agreements to resell

Interest-bearing deposits with banks
Other short-term investments

Investment securities available-for-sale

Commercial loans
Real estate construction loans
Commercial mortgage loans
Residential mortgage loans
Consumer loans
Lease financing
International loans

Total loans

Less allowance for loan losses

Net loans

Accrued income and other assets

2010

2009

2008

2007

2006

$

825

$

883

$

1,185

$

1,352

$

1,557

6
3,191
126

7,164

21,090
2,839
10,244
1,607
2,429
1,086
1,222

40,517
(1,019)

39,498
4,743

18
2,440
154

9,388

24,534
4,140
10,415
1,756
2,553
1,231
1,533

46,162
(947)

45,215
4,711

93
219
244

8,101

28,870
4,715
10,411
1,886
2,559
1,356
1,968

51,765
(691)

51,074
4,269

164
15
241

4,447

28,132
4,552
9,771
1,814
2,367
1,302
1,883

49,821
(520)

49,301
3,054

283
110
156

3,992

27,341
3,905
9,278
1,570
2,533
1,314
1,809

47,750
(499)

47,251
3,230

Total assets

$

55,553

$

62,809

$

65,185

$

58,574

$ 56,579

LIABILITIES AND SHAREHOLDERS’

EQUITY

Noninterest-bearing deposits

$

15,094

$

12,900

$

10,623

$

11,287

$ 13,135

Money market and NOW deposits
Savings deposits
Customer certificates of deposit

Total interest-bearing core deposits

Other time deposits
Foreign office time deposits

Total interest-bearing deposits

Total deposits
Short-term borrowings
Accrued expenses and other liabilities
Medium- and long-term debt

Total liabilities
Total shareholders’ equity

Total liabilities and shareholders’

equity

16,355
1,394
5,875

23,624
306
462

24,392

39,486
216
1,099
8,684

49,485
6,068

12,965
1,339
8,131

22,435
4,103
653
27,191

40,091
1,000
1,285
13,334

55,710
7,099

14,245
1,344
8,150

23,739
6,715
926
31,380

42,003
3,763
1,520
12,457

59,743
5,442

14,937
1,389
7,687

24,013
5,563
1,071
30,647

41,934
2,080
1,293
8,197

53,504
5,070

15,373
1,441
6,505

23,319
4,489
1,131
28,939

42,074
2,654
1,268
5,407

51,403
5,176

$

55,553

$

62,809

$

65,185

$

58,574

$ 56,579

150

HISTORICAL REVIEW – STATEMENTS OF INCOME
Comerica Incorporated and Subsidiaries

CONSOLIDATED FINANCIAL INFORMATION (in millions, except per share data)
Years Ended December 31

2010

2009

2008

2007

2006

INTEREST INCOME
Interest and fees on loans
Interest on investment securities
Interest on short-term investments
Total interest income

INTEREST EXPENSE
Interest on deposits
Interest on short-term borrowings
Interest on medium- and long-term debt

Total interest expense
Net interest income

Provision for loan losses

Net interest income after provision for loan losses

NONINTEREST INCOME
Service charges on deposit accounts
Fiduciary income
Commercial lending fees
Letter of credit fees
Card fees
Foreign exchange income
Bank-owned life insurance
Brokerage fees
Net securities gains
Income from lawsuit settlement
Other noninterest income

Total noninterest income
NONINTEREST EXPENSES
Salaries
Employee benefits

Total salaries and employee benefits

Net occupancy expense
Equipment expense
Outside processing fee expense
Software expense
FDIC insurance expense
Legal fees
Advertising expense
Other real estate expense
Litigation and operational losses
Customer services
Provision for credit losses on lending-related commitments
Other noninterest expenses

Total noninterest expenses

Income (loss) from continuing operations before income taxes
Provision (benefit) for income taxes
Income from continuing operations
Income from discontinued operations, net of tax
NET INCOME
Less:

Preferred stock dividends
Income allocated to participating securities

Net income (loss) attributable to common shares
Basic earnings per common share:

Income (loss) from continuing operations
Net income (loss)

Diluted earnings per common share:

Income (loss) from continuing operations
Net income (loss)

Cash dividends declared on common stock
Cash dividends declared per common share

151

$

1,617 $
226
10
1,853

1,767 $
329
9
2,105

2,649 $
389
13
3,051

3,501 $
206
23
3,730

115
1
91
207
1,646
480
1,166

208
154
95
76
58
39
40
25
3
-
91
789

372
2
164
538
1,567
1,082
485

228
161
79
69
51
41
35
31
243
-
112
1,050

734
87
415
1,236
1,815
686
1,129

229
199
69
69
58
40
38
42
67
-
82
893

1,167
105
455
1,727
2,003
212
1,791

221
199
75
63
54
40
36
43
7
-
150
888

740
179
919
162
63
96
89
62
35
30
29
11
3
(2)
143
1,640
315
55
260
17
277 $

687
210
897
162
62
97
84
90
37
29
48
10
4
-
130
1,650
(115)
(131)
16
1
17 $

781
194
975
156
62
104
76
16
29
30
10
103
13
18
159
1,751
271
59
212
1
213 $

844
193
1,037
138
60
91
63
5
24
34
7
18
43
(1)
172
1,691
988
306
682
4
686 $

123
1
153 $

134
1
(118) $

17
4
192 $

-
6
680 $

0.79 $
0.90

(0.80) $
(0.79)

1.28 $
1.29

4.43 $
4.45

0.78
0.88

44
0.25

(0.80)
(0.79)

30
0.20

1.28
1.28

348
2.31

4.40
4.43

393
2.56

$

$

$

3,216
174
32
3,422

1,005
130
304
1,439
1,983
37
1,946

218
180
65
64
46
38
40
40
-
47
117
855

823
184
1,007
125
55
85
56
5
28
32
4
11
47
5
214
1,674
1,127
345
782
111
893

-
7
886

4.85
5.53

4.81
5.49

380
2.36

HISTORICAL REVIEW – STATISTICAL DATA
Comerica Incorporated and Subsidiaries

CONSOLIDATED FINANCIAL INFORMATION

Years Ended December 31

2010

2009

2008

2007

2006

Average Rates (Fully Taxable Equivalent Basis)
Federal funds sold and securities purchased under

agreements to resell

Interest-bearing deposits with banks
Other short-term investments

Investment securities available-for-sale

Commercial loans
Real estate construction loans
Commercial mortgage loans
Residential mortgage loans
Consumer loans
Lease financing
International loans
Total loans
Interest income as a percentage of earning assets

Domestic deposits
Deposits in foreign offices

Total interest-bearing deposits

Short-term borrowings
Medium- and long-term debt

Interest expense as a percentage of interest-bearing

sources
Interest rate spread
Impact of net noninterest-bearing sources of funds
Net interest margin as a percentage of earning assets

Ratios
Return on average common shareholders’ equity
Return on average assets
Efficiency ratio
Tier 1 common capital as a percentage of risk-weighted

assets (a)

Tier 1 capital as a percentage of risk-weighted assets
Total capital as a percentage of risk-weighted assets
Tangible common equity as a percentage of tangible

assets (a)

Per Common Share Data
Book value at year-end
Market value at year-end
Market value for the year

High
Low

Other Data (share data in millions)
Average common shares outstanding - basic
Average common shares outstanding - diluted

Number of banking centers
Number of employees (full-time equivalent)

0.36 %
0.25
1.58

0.32 %
0.25
1.74

2.08 %
0.61
3.98

5.28 %
4.00
5.75

5.15 %
5.86
7.26

3.24

3.89
3.17
4.10
5.30
3.54
3.88
3.94
4.00
3.65

0.48
0.31
0.47
0.25
1.05

3.61

3.63
2.92
4.20
5.53
3.68
3.25
3.79
3.84
3.64

1.39
0.29
1.37
0.24
1.23

4.83

5.08
4.89
5.57
5.94
5.08
0.59
5.13
5.13
5.06

2.33
2.77
2.34
2.30
3.33

4.56

7.25
8.21
7.26
6.13
7.00
3.04
7.06
7.03
6.82

3.77
4.85
3.81
5.06
5.55

4.22

6.87
8.61
7.27
6.02
7.13
4.00
7.01
6.74
6.53

3.42
4.82
3.47
4.89
5.63

0.62
3.03
0.21
3.24 %

1.29
2.35
0.37
2.72 %

2.59
2.47
0.55
3.02 %

4.22
2.60
1.06
3.66 %

3.89
2.64
1.15
3.79 %

2.74 % (2.37) %
0.50
67.30

0.03
69.25

3.79 %
0.33
66.17

$

$

10.13
10.13
14.54

10.54

32.82
42.24

45.85
29.68

170
173

444
9,001

$

8.18
12.46
16.93

7.99

32.27
29.57

32.30
11.72

149
149

447
9,330

7.08
10.66
14.72

7.21

33.38
19.85

45.19
15.05

149
149

439
10,186

13.52 % 17.24 %

1.17
58.58

6.85
7.51
11.20

1.58
58.92

7.54
8.03
11.64

7.97

8.62

$

34.12
43.53

$ 32.70
58.68

63.89
39.62

60.10
50.12

153
154

417
10,782

160
161

393
10,700

(a) See Supplemental Financial Data section for reconcilements of non-GAAP financial measures.

152

Shareholder Information

Stock
Comerica’s common stock trades on the 
New York Stock Exchange (NYSE) under 
the symbol CMA.

Shareholder Assistance
Inquiries related to shareholder records, 
change of name, address or ownership of 
stock, and lost or stolen stock certificates 
should be directed to the transfer agent and 
registrar:

Written Requests: 
Wells Fargo
Shareowner Services
P.O. Box 64854
St. Paul, MN 55164-0854
(877) 536-3551
stocktransfer@wellsfargo.com

Certified/Overnight Mail:
Wells Fargo
Shareowner Services
161 North Concord Exchange
South St. Paul, MN 55075-1139
(877) 536-3551
shareowneronline.com

Elimination of 
Duplicate Materials
If you receive duplicate mailings at one 
address, you may have multiple shareholder 
accounts. You can consolidate your multiple 
accounts into a single, more convenient 
account by contacting the transfer agent 
shown above. In addition, if more than one 
member of your household is receiving 
shareholder materials, you can eliminate the 
duplicate mailings by contacting the transfer 
agent.

Dividend Reinvestment Plan
Comerica offers a dividend reinvestment plan, 
which permits participating shareholders of 
record to reinvest dividends in Comerica 
common stock without paying brokerage 
commissions or service charges. Participating 
shareholders also may invest up to $10,000 in 
additional funds each month for the purchase 
of additional shares. A brochure describing the 
plan in detail and an authorization form can be 
requested from the transfer agent shown 
above.

Dividend Direct Deposit
Common shareholders of Comerica may have 
their dividends deposited into their savings or 
checking account at any bank that is a 
member of the National Automated Clearing 
House (ACH) system. Information describing 
this service and an authorization form can be 
requested from the transfer agent shown 
above.

Dividend Payments
Subject to approval of the board of directors, 
dividends customarily are paid on Comerica’s 
common stock on or about January 1, April 1, 
July 1 and October 1.

Form 10-K
A copy of Comerica’s Annual Report on Form 
10-K for the fiscal year ended December 31, 
2010, as filed with the Securities and 
Exchange Commission, will be provided 
without charge upon written request to the 
Secretary of the Corporation at the 
address listed on the back cover.

Officer Certifications
On May 10, 2010, Comerica’s Chief Executive 
Officer submitted his annual certification to 
the New York Stock Exchange stating that he 
was not aware of any violation by Comerica of 
the Exchange’s corporate governance listing 
standards. Comerica filed the certifications by 
its Chief Executive Officer and Chief Financial 
Officer required by Section 302 of the 
Sarbanes-Oxley Act of 2002 as exhibits to its 
Annual Report on Form 10-K for the fiscal 
year ended December 31, 2010.

Investor Relations on the Internet
Go to comerica.com to find the latest investor 
relations information about Comerica, 
including stock quotes, news releases 
and financial data.

Stock Prices, Dividends and Yields

Community Reinvestment Act 
(CRA) Performance
Comerica is committed to meeting the 
credit needs of the communities it serves. 
Comerica’s overall CRA rating is 
“Outstanding.”

Equal Employment Opportunity
Comerica is committed to its affirmative action 
program and practices, which ensure uniform 
treatment of employees without regard to 
ancestry, race, color, religion, sex, national 
origin, age, physical or mental disability, 
medical condition, veteran status, marital 
status, pregnancy, weight, height, gender 
identity or sexual orientation.

Corporate Ethics
The Corporate Governance section of 
Comerica’s website at comerica.com includes 
the following codes of ethics: Senior Financial 
Officer Code of Ethics, Code of Business 
Conduct and Ethics for Employees, and Code 
of Business Conduct and Ethics for Members 
of the Board of Directors. Comerica will also 
disclose in that website section any 
amendments or waivers to the Senior Financial 
Officer Code of Ethics within four business 
days of such an event.

General Information
Directory Services 
800.521.1190
Product Information  800.292.1300

Quarter

High 

Low 

Dividends Per Share  Dividend Yield*

2010
Fourth
Third
Second
First

2009
Fourth
Third
Second
First

$ 43.44 
$ 40.21 
$ 45.85 
$ 39.36 

$ 32.30 
$ 31.83 
$ 26.47 
$ 21.20 

$ 34.43 
$ 33.11 
$ 35.44 
$ 29.68 

$ 26.49 
$ 19.94 
$ 16.03 
$ 11.72 

$ 0.10 
$ 0.05 
$ 0.05 
$ 0.05 

$ 0.05 
$ 0.05 
$ 0.05 
$ 0.05 

1.0%
0.5%
0.5%
0.6%

0.7%
0.8%
0.9%
1.2%

*Dividend yield is calculated by annualizing the quarterly dividend per share and dividing by an
  average of the high and low price in the quarter.

As of January 31, 2011, there were 12,193 
holders of record of Comerica’s common 
stock.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
comerica.com

Comerica Corporate Headquarters

Comerica Bank Tower 

1717 Main Street

Dallas, Texas 75201

comerica.com

Comerica Corporate Headquarters

Comerica Bank Tower 

1717 Main Street

Dallas, Texas 75201

Comerica 
Incorporated  
2010 
Annual 
Report

LLECTIVE

Success

When our customers succeed, so do we. 

SM

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