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Northrop Grumman

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FY2012 Annual Report · Northrop Grumman
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2012

Annual Report
Annual Report

SELECTED FINANCIAL HIGHLIGHTS

3
4
1
8
2
$

,

2
1
4
6
2
$

,

8
1
2

,

5
2
$

6
7
2

,

3
$

0
3
1

,

3
$

7
2
8

,

2
$

1
4
7.
$

1
8
7.
$

2
3
6
$

.

10

11

12

10

11

12

10

11

12

SALES
( $ in millions ) 

OPERATING INCOME
( $ in millions ) 

DILUTED EPS FROM 
CONTINUING OPERATIONS

7
9
1
$

.

5
1
2
$

.

4
8
1
$

.

5
9
9
2
$

,

3
3
8
2
$

,

5
9
5

,

2
$

3
0
5

,

2
$

2
0
5

,

2
$

0
1
0

,

2
$

10

11

12

10

11

12

10

11

12

CASH DIVIDENDS DECLARED
( per common share ) 

ADJUSTED CASH 
PROVIDED BY CONTINUING 
OPERATIONS*
( $ in millions ) 

ADJUSTED FREE CASH 
FLOW FROM CONTINUING 
OPERATIONS*
( $ in millions ) 

* Non-GAAP measures

Non-GAAP definitions and reconciliations:

Adjusted cash provided by operations is cash 
provided by operations as defined by GAAP 
before the after-tax impact of discretionary 
pension contributions of $193 million,   
$648 million, and $539 million for years   
2012, 2011 and 2010, respectively.

Free cash flow is cash provided by operations 
less capital expenditures. Free cash flow is 
reconciled to cash provided by operations in 
the table on page 34 of Part II, Item 7, “Liquidity 
and Capital Resources,” in the Form 10-K 
included in these materials.

Adjusted free cash flow is free cash flow 
as defined and reconciled above before 
the after-tax impact of discretionary 
pension contributions of $193 million, 
$648 million, and $539 million for years 
2012, 2011 and 2010, respectively.

DEAR FELLOW SHAREHOLDERS

Northrop Grumman Corporation delivered outstanding results in 
2012, continuing to create value for our shareholders, customers and 
employees through an unwavering focus on performance, portfolio 
alignment and effective cash generation and deployment.

In 2012 we met or exceeded guidance for every measure. Our 
financial results reflect the positive impact of superior program 
performance, cost reductions, affordability initiatives, innovation, 
and portfolio shaping across our four businesses.  

Highlights of our 2012 financial performance include increased 
earnings per share from continuing operations by 5 percent to 
$7.81 per diluted share; a total backlog increase of 3 percent, to 
$40.8 billion; and free cash flow of $2.5 billion before discretionary 
pension contributions. Through share repurchases and dividends, 
we returned more than $1.8 billion in cash to our shareholders,  
or approximately 80 percent of 2012 reported free cash flow.

To put our company’s performance into perspective, since the  
end of 2009, sales from our continuing operations have declined  
about 9 percent, due in part to portfolio reshaping. During that  
same period, our focus on performance has generated a  
20 percent increase in absolute segment operating income and  
more than a 30 percent improvement in segment operating margin 
rate. As a result, in combination with effective cash deployment, 
earnings per share from continuing operations have grown by 
a compound annual growth rate of 20 percent. While superior 
program performance and portfolio shaping drove much of the 
improvement, we’ve also significantly reduced our cost structure.  

As we look ahead, we continue to see uncertainty with regard 
to government fiscal policy as well as national security strategy.  
This uncertainty can be unsettling, but it also provides new 
opportunities to better position our company through innovative 
thinking. We have prepared our company to address this 
challenging environment.  

We continue to focus our strategy on four key markets where 
we believe our customers will make investments for the future 
– unmanned systems, C4ISR, cybersecurity and logistics and 
modernization – as well as manned strike aircraft. We also see 
growth opportunities in international markets.

As part of our business and operational strategies and priorities,  
we continue to seek effective ways to help build and strengthen the 
communities where we work and live. As we grow our presence in 
international markets, we will be expanding our community support 
in those regions as well. Our outreach strategy focuses primarily on 
education, support for the men and women serving in the armed 
forces, and local support to the communities where we operate. In 
2012, Northrop Grumman and the Northrop Grumman Foundation 
contributed a total of $33.5 million to philanthropic efforts. We 
report annually regarding our performance in the corporate 
responsibility arena. I encourage you to take a few minutes to read 
our most recent Corporate Responsibility report recapping our 
milestones and accomplishments in 2012.

Our team takes great pride that Northrop Grumman’s 2012 
financial results demonstrate strong performance in a challenging 
environment, achieved with the highest levels of ethics and 
integrity. The employees of Northrop Grumman remain committed 
to creating shareholder value during these uncertain times, and we 
are focusing our full attention on driving performance, effectively 
generating and deploying cash and optimizing our business 
portfolio. Our record over the past several years shows that we can 
do this successfully. Thank you for your continued investment in and 
support of our company.

WES BUSH
Chairman, CEO and President

March 28, 2013

PAGE 1

NORTHROP GRUMMAN 2012 ANNUAL REPORTOUR BUSINESS SECTORS

AEROSPACE SYSTEMS

A  premier provider of manned and unmanned 
aircraft,  space  systems,  and  advanced 
technologies  critical  to  the  nation’s  security. 
Key  products  include  the  Global  Hawk 
enterprise  (Global  Hawk,  Triton,  EURO  HAWK 
and NATO AGS), Fire Scout, and X-47B UCAS-D 
unmanned aircraft systems; the B-2 Bomber, 
E-2  Hawkeye,  Joint  STARS  targeting  and 
battle  management  system;  the  James  Webb 
Space  Telescope,  Space  Tracking  and  
Surveillance System.

Northrop Grumman offers an extraordinary 

portfolio of capabilities and technologies 

that enable us to deliver innovative systems 

and solutions for applications that range 

from undersea to outer space and into 

cyberspace. Our core competencies are 

aligned with the current and future needs of 

our customers and address emerging global 

security challenges in key areas, such as 

unmanned systems, cybersecurity, C4ISR and 

logistics and modernization that are critical 

to the defense of our nation and its allies.

PAGE 2

NORTHROP GRUMMAN 2012 ANNUAL REPORTELECTRONIC SYSTEMS

INFORMATION SYSTEMS

TECHNICAL SERVICES

A  leading  provider  of  sensor  systems  for 
a  variety  of  global  security  applications 
including  situational  awareness  and  self-
protection.    Key  products  include  combat 
avionics  radars  for  fighter  aircraft; 
satellite-based  space  sensors;  airborne 
surveillance systems; ground and vehicle-
based radars; shipboard radars; navigation  
systems;  systems  for  unmanned  aircraft;  
laser  systems  for  both  targeting  and  
infrared  countermeasures  applications;  
advanced electronic systems covering the  
electro-optical,  RF,  and  IR  spectrums; 
and  networked  systems  to  process  and 
disseminate C4ISR data.

A global provider of advanced information 
solutions  for  defense,  intelligence,  civil 
agencies,  and  commercial  customers. 
Key  products  and  capabilities 
include 
full-spectrum  cybersecurity  solutions; 
Battlefield  Airborne  Communications 
Node;  Consolidated  Afloat  Networks 
and  Enterprise  Services;  Air  Operations 
Center  modernization;  MOSA-C  and 
open  architecture  solutions;  unmanned 
ground  systems;  software-defined  RF 
technology;  force  protection;  Integrated 
Battle  Command  System;  Activity-Based 
Intelligence  solutions;  Airborne  Signals 
Intelligence  Payload  products;  Enterprise 
Networked  Support  Services;  health  IT 
solutions;  fraud  prevention  systems;  and 
public safety systems.

A premier supplier of life cycle solutions 
and  innovative  technical  support  and 
services  for  customers  globally.  Key 
capabilities  include  platform  sustainment 
and  modernization,  advanced  training 
solutions,  high-technology  engineering 
services  and  operationally  responsive 
systems  for  programs  such  as  KC-10 
Extender  refueling  aircraft;  Nevada 
National  Security  Site  management 
and  operations;  U.S.  Army  Mission 
Command  Training  Program;  Hunter 
life  cycle 
unmanned  aerial  system 
support;  Intercontinental  Ballistic  Missile 
Program  and  the  U.S.  Army’s  National 
Training  Center  combat  and  tactical 
wheel vehicle fleet management.

PAGE 3

NORTHROP GRUMMAN 2012 ANNUAL REPORTELECTED OFFICERS

WESLEY G. BUSH
Chairman, Chief Executive Officer 
and President

SID ASHWORTH
Corporate Vice President, 
Government Relations

MARK A. CAYLOR
Corporate Vice President  
and President,  
Enterprise Shared Services

SHEILA C. CHESTON
Corporate Vice President 
and General Counsel

GLORIA  A. FLACH
Corporate Vice President 
and President, 
Electronic Systems

BOARD OF DIRECTORS

WESLEY G. BUSH
Chairman, Chief Executive Officer 
and President,  
Northrop Grumman Corporation

VICTOR H. FAZIO 1 3
Senior Advisor, Akin Gump 
Strauss Hauer & Feld LLP 
(law firm)

DONALD E. FELSINGER 2 4
Lead Independent Director, 
Northrop Grumman Corporation  
Former Chairman and  
Chief Executive Officer,  
Sempra Energy 
(energy services company)

STEPHEN E. FRANK 1 3†
Former Chairman, President 
and Chief Executive Officer, 
Southern California Edison 
(electric utility company)

PAGE 4

DARRYL M. FRASER
Corporate Vice President, 
Communications

MICHAEL A. HARDESTY
Corporate Vice President, 
Controller and 
Chief Accounting Officer

CHRISTOPHER T. JONES 
Corporate Vice President 
and President, 
Technical Services

JENNIFER C. MCGAREY
Corporate Vice President  
and Secretary

LINDA A. MILLS
Corporate Vice President,  
Operations

BRUCE S. GORDON 1† 4
Former President 
and Chief Executive Officer, 
NAACP and Former President, 
Retail Markets Group, 
Verizon Communications Inc. 
(telecomunications company)

MADELEINE A. KLEINER 2 3
Former Executive Vice President 
and General Counsel,  
Hilton Hotels Corporation 
(hotel and resort company)

KARL J. KRAPEK 2† 4
Former President and 
Chief Operating Officer, 
United Technologies Corporation 
(aerospace and building 
 systems company)

RICHARD B. MYERS 1 4
General, United States Air Force 
(Ret.) and Former Chairman of 
the Joint Chiefs of Staff

PRABU NATARAJAN
Corporate Vice President 
and Treasurer 

JAMES F. PALMER
Corporate Vice President and 
Chief Financial Officer

DENISE M. PEPPARD
Corporate Vice President 
and Chief Human Resources Officer

THOMAS E. VICE
Corporate Vice President 
and President, 
Aerospace Systems

AULANA L. PETERS 2 3
Former Partner, 
Gibson, Dunn & Crutcher 
(law firm)

GARY ROUGHEAD 1 3
Admiral, United States Navy (Ret.) 
and Former U.S. Navy  
Chief of Naval Operations

THOMAS M. SCHOEWE 1 3
Former Executive Vice President 
and Chief Financial Officer, 
Wal-Mart Stores, Inc. 
(operator of retail stores)

KEVIN W. SHARER 2 4†
Former Chairman,  
Chief Executive Officer 
and President, Amgen, Inc. 
(biotechnology company)

1 Member of Policy Committee

2 Member of Governance Committee

3 Member of Audit Committee

4 Member of Compensation Committee

† Committee Chairperson

NORTHROP GRUMMAN 2012 ANNUAL REPORTUNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
_____________________ 

FORM 10-K
_____________________ 

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE 
ACT OF 1934

For the fiscal year ended December 31, 2012
or

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES 
EXCHANGE ACT OF 1934

For the transition period from             to            Commission file number 1-16411
NORTHROP GRUMMAN CORPORATION
(Exact name of registrant as specified in its charter)

DELAWARE
(State or other jurisdiction of 
incorporation or organization)

80-0640649
(I.R.S. Employer 
Identification Number)

2980 Fairview Park Drive, Falls Church, Virginia 22042 (703) 280-2900
(Address and telephone number of principal executive offices)
Securities registered pursuant to section 12(b) of the Act:

Title of each class
Common Stock, $1 par value

Name of each exchange on which registered
New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: 
None
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

   Yes 

   No 

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act.

Yes 

No 

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities 
Exchange Act of 1934 during the preceding 12 months (or such shorter period that the registrant was required to file such reports), 
and (2) has been subject to such filing requirements for the past 90 days. 

Yes 

No 

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every 
Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months 
(or for such shorter period that the registrant was required to submit and post such files).

Yes 

No 

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will 
not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in 
Part III of this Form 10-K or any amendment to this Form 10-K.  
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller 
reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 
12b-2 of the Exchange Act.

Large accelerated filer 

   Accelerated filer 

Non-accelerated filer 
(Do not check if a smaller reporting company)

   Smaller reporting company 

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).

As of June 29, 2012, the aggregate market value of the common stock (based upon the closing price of the stock on the New York 
Stock Exchange) of the registrant held by non-affiliates was approximately $15.8 billion.

Yes 

No 

As of January 31, 2013, 237,126,501 shares of common stock were outstanding.

DOCUMENTS INCORPORATED BY REFERENCE
Portions of Northrop Grumman Corporation’s Proxy Statement to be filed with the Securities and Exchange Commission pursuant 
to Regulation 14A for the 2013 Annual Meeting of Stockholders are incorporated by reference in Part III of this Form 10-K.

 
 
 
 
  
NORTHROP GRUMMAN CORPORATION

 TABLE OF CONTENTS

Item 1.
Item 1A.
Item 1B.
Item 2.
Item 3.
Item 4.

Business
Risk Factors
Unresolved Staff Comments
Properties
Legal Proceedings
Mine Safety Disclosures

PART I

PART II

Item 5.

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity 
Securities

Item 6.
Item 7.

Selected Financial Data
Management’s Discussion and Analysis of Financial Condition and Results of Operations

OVERVIEW
CONSOLIDATED OPERATING RESULTS
SEGMENT OPERATING RESULTS
PRODUCT AND SERVICE ANALYSIS
BACKLOG
LIQUIDITY AND CAPITAL RESOURCES
CRITICAL ACCOUNTING POLICIES, ESTIMATES, AND JUDGMENTS
OTHER MATTERS

Item 7A.
Item 8.

Quantitative and Qualitative Disclosures about Market Risk
Financial Statements and Supplementary Data

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
CONSOLIDATED STATEMENTS OF EARNINGS AND COMPREHENSIVE INCOME
CONSOLIDATED STATEMENTS OF FINANCIAL POSITION
CONSOLIDATED STATEMENTS OF CASH FLOWS
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
2. EARNINGS PER SHARE, SHARE REPURCHASES, DIVIDENDS ON COMMON SHARES
3. BUSINESS DISPOSITIONS
4. SEGMENT INFORMATION
5. ACCOUNTS RECEIVABLE, NET
6. INVENTORIED COSTS, NET
7. INCOME TAXES
8. GOODWILL AND OTHER PURCHASED INTANGIBLE ASSETS
9. FAIR VALUE OF FINANCIAL INSTRUMENTS

Page

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i

 
 
 
 
10. LONG-TERM DEBT
11. INVESTIGATIONS, CLAIMS AND LITIGATION
12. COMMITMENTS AND CONTINGENCIES
13. RETIREMENT BENEFITS
14. STOCK COMPENSATION PLANS AND OTHER COMPENSATION ARRANGEMENTS
15. UNAUDITED SELECTED QUARTERLY DATA

Item 9.
Item 9A.
Item 9B.

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
Controls and Procedures
Other Information

MANAGEMENT’S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM ON INTERNAL 
CONTROL OVER FINANCIAL REPORTING

PART III

Item 10.
Item 11.
Item 12.
Item 13.
Item 14.

Directors, Executive Officers, and Corporate Governance
Executive Compensation
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
Certain Relationships and Related Transactions, and Director Independence
Principal Accountant Fees and Services

Item 15.

Exhibits and Financial Statement Schedules
SIGNATURES

PART IV

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ii

 
 
 
[THIS PAGE INTENTIONALLY LEFT BLANK]

NORTHROP GRUMMAN CORPORATION 

Item 1. Business

HISTORY AND ORGANIZATION

PART I

History
Northrop Grumman Corporation (herein referred to as “Northrop Grumman,” the “company,” “we,” “us,” or “our”) 
is a leading global security company providing innovative systems, products and solutions in unmanned systems, 
cybersecurity; command, control, communications and computers (C4) intelligence, surveillance, and 
reconnaissance (C4ISR); and logistics and modernization to government and commercial customers worldwide 
through our four sectors: Aerospace Systems, Electronic Systems, Information Systems and Technical Services. We 
participate in many high-priority defense and government services programs in the United States (U.S.) and abroad. 
We offer a broad portfolio of capabilities and technologies that enable us to deliver innovative systems and solutions 
for applications that range from undersea to outer space and into cyberspace. We conduct most of our business with 
the U.S. Government, principally the Department of Defense (DoD) and intelligence community. We also conduct 
business with local, state, and foreign governments and domestic and international commercial customers. For a 
discussion of risks associated with our operations, see Risk Factors in Part I, Item 1A.

The company originally was formed in Hawthorne, California in 1939 as Northrop Aircraft Incorporated and was 
reincorporated in Delaware in 1985 as Northrop Corporation. Northrop Aircraft Incorporated was a principal 
developer of the flying wing technology, including the B-2 Stealth Bomber. The company developed into one of the 
largest defense contractors in the world through a series of acquisitions, as well as organic growth. Some of the most 
notable acquisitions during the last two decades included the acquisition of Grumman Corporation (Grumman) in 
1994, after which time the company was renamed Northrop Grumman Corporation. Grumman was a premier 
military aircraft systems integrator and builder of the Lunar Module that first delivered men to the surface of the 
moon. In 1996, we acquired the defense and electronics businesses of Westinghouse Electric Corporation 
(Westinghouse), a world leader in the development and production of sophisticated radar and other electronic 
systems for the nation’s defense, civil aviation, and other international and domestic applications. In 2001, we 
acquired Litton Industries, a global electronics and information technology company, and one of the nation’s leading 
full-service design, engineering, construction, and life cycle supporters of major surface ships for the U.S. Navy, 
U.S. Coast Guard, and international navies. In 2002, we acquired TRW Inc. (TRW), a leading developer of military 
and civil space systems and satellite payloads, as well as a leading global integrator of complex, mission-enabling 
systems and services. 

Effective as of March 31, 2011, the company completed the spin-off to its shareholders of Huntington Ingalls 
Industries, Inc. (HII). HII operates our former Shipbuilding business, which was acquired in 2001 through the 
acquisition of Newport News Shipbuilding and a portion of the Litton acquisition. The spin-off was the culmination 
of the company’s decision to explore strategic alternatives for Shipbuilding, as it was determined to be in the best 
interests of shareholders, customers, and employees by allowing the company and Shipbuilding to pursue more 
effectively their respective opportunities to maximize value. As a result of the spin-off, assets, liabilities and results 
of operations for the former Shipbuilding segment have been reclassified as discontinued operations for all periods 
presented. See Note 3 to our consolidated financial statements in Part II, Item 8 for further information.

Organization
From time to time, we acquire or dispose of businesses, and realign contracts, programs or business areas among and 
within our operating segments that possess similar customers, expertise, and capabilities. Internal realignments are 
designed to more fully leverage existing capabilities and enhance development and delivery of products and 
services. The operating results for all periods presented have been revised to reflect these changes made through 
December 31, 2012. We are currently aligned into four operating segments: Aerospace Systems, Electronic Systems, 
Information Systems, and Technical Services. See Note 4 to our consolidated financial statements in Part II, Item 8 
for further information.

AEROSPACE SYSTEMS

Aerospace Systems, headquartered in Redondo Beach, California, is a leader in the design, development, integration 
and production of manned aircraft, unmanned systems, spacecraft, high-energy laser systems, microelectronics and 
other systems and subsystems. Aerospace Systems' customers, primarily U.S. government agencies, use these 
systems in mission areas including intelligence, surveillance and reconnaissance; communications; battle 
management; strike operations; electronic warfare; earth observation; space science; and space exploration. The 

-1-

 
 
 
 
 
NORTHROP GRUMMAN CORPORATION

segment consists of four business areas: Unmanned Systems; Military Aircraft Systems; Space Systems; and 
Advanced Programs &Technology.

Unmanned Systems – designs, develops, manufactures, and integrates tactical and reconnaissance unmanned 
systems. Key programs include the RQ-4 Global Hawk reconnaissance system, Triton (formerly known as Broad 
Area Maritime Surveillance or BAMS) aircraft system, NATO Alliance Ground Surveillance, Fire Scout aircraft 
systems, and aerial targets.

Military Aircraft Systems – designs, develops, manufactures, and integrates airborne C4ISR, electronic warfare 
mission systems, long range strike and tactical aircraft systems. Key programs include E-2 Hawkeye, Joint 
Surveillance Target Attack Radar System (JSTARS), and the newly developed Long Endurance Multi-Intelligence 
Vehicle (LEMV), an optionally manned or unmanned lighter than air weapon system. Electronic warfare includes 
the EA-18G Growler and EA-6B Prowler airborne electronic attack weapon systems. This business area designed, 
developed and manufactured the B-2 Bomber and now provides sustainment and upgrade services for the B-2, 
which is the nation's most advanced long range strike aircraft system. Tactical aircraft includes the design, 
development, manufacture and integration of F/A-18 aft sections and F-35 center sections.

Space Systems – designs, develops, manufactures, and integrates spacecraft systems, subsystems, sensors and 
communications payloads in support of C4ISR. Key programs include the James Webb Space Telescope (JWST), 
Advanced Extremely High Frequency (AEHF) payload and restricted programs.

Advanced Programs & Technology – creates advanced technologies and innovative concepts to satisfy existing and 
emerging customer needs. This business area matures these technologies and concepts to create and capture new 
programs that other Aerospace Systems business areas can execute. Key programs include the Navy Unmanned 
Combat Air System (N-UCAS), restricted programs, and directed energy and advanced concepts programs for air, 
land and space applications.

ELECTRONIC SYSTEMS

Electronic Systems, headquartered in Linthicum, Maryland, is a leader in the design, development, manufacture, and 
support of solutions for sensing, understanding, anticipating, and controlling the operating environment for our 
global military, civil, and commercial customers. Electronic Systems provides a variety of defense electronics and 
systems, airborne fire control radars, situational awareness systems, early warning systems, airspace management 
systems, navigation systems, communications systems, marine power and propulsion systems, space systems, and 
logistics services. The segment consists of four business areas: Intelligence, Surveillance, Reconnaissance & 
Targeting Systems; Land & Self Protection Systems; Naval & Marine Systems; and Navigation Systems.

Intelligence, Surveillance, Reconnaissance & Targeting Systems – delivers products and services for space satellite 
applications, airborne and ground based surveillance, multi-sensor processing, analysis, and dissemination for 
combat units and national agencies, both domestic and international. These systems provide battle space awareness, 
missile defense, command and control, combat avionics (fire control radars, multi-function apertures and pods), and 
airborne electro-optical/infrared (EO/IR) targeting systems. Key programs include airborne fire control radars such 
as the F-16, B-1B, F-22 Active Electronically Scanned Array (AESA), F-35 AESA; EO/IR systems such as the 
Distributed Aperture Systems, and Litening; airborne surveillance radars such as the Multirole Electronically 
Scanned Array, Airborne Early Warning & Control System, Multi-Function Active Sensor for Triton, Multi-Platform 
Radar Technology Insertion Program; space systems such as the Space-Based Infrared System, Defense 
Meteorological Satellite Program, Defense Support Program, and the Scalable Space Inertial Reference Unit.

Land & Self Protection Systems – delivers products, systems, and services that support ground-based, helicopter and 
fixed wing platforms (manned and unmanned) with sensor and protection systems. A major product line of this 
business area consists of systems that perform threat detection and countermeasures that defeat infrared and radio 
frequency (RF) guided missile and tracking systems. This business area also provides integrated electronic warfare 
capability, communications and intelligence systems, unattended ground sensors, automatic test equipment, 
advanced threat simulators, ground based surveillance radars, and laser/electro-optical systems including hand-held, 
tripod-mounted, and ground or air vehicle mounted systems. Key programs include the Ground/Air Task Oriented 
Radar, the Three-Dimensional Expeditionary Long-Range Radar, the Large Aircraft Infrared Countermeasures, the 
Common Infrared Countermeasures system, the Apache Fire Control Radar, and the Vehicle and Dismount 
Exploitation Radar.

Naval & Marine Systems – delivers products and services to defense, civil, and commercial customers supporting 
smart navigation, shipboard radar surveillance, ship control, machinery control, integrated combat management 
systems for naval surface ships, high-resolution undersea sensors (for mine hunting, situational awareness, and other 

-2-

NORTHROP GRUMMAN CORPORATION

applications), unmanned marine vehicles, shipboard missile and encapsulated payload launch systems, propulsion 
and power generation systems, and nuclear reactor instrumentation and control. Key programs include AN/SPQ-9B 
Anti-Ship Missile Defense radar (ASMD), Integrated Bridge and Navigation Systems, Voyage Management 
Systems, Integrated Platform and Combat Management Systems, Inertial Navigator Systems, Virginia Class 
Submarine, and the Trident D5 Launch System.

Navigation Systems - delivers products and services to defense, civil, and commercial customers supporting 
situational awareness, inertial navigation in all domains (air, land, sea, and space), embedded Global Positioning 
Systems, Identification Friend or Foe (IFF) systems, acoustic sensors, advanced synthetic cockpits, cockpit video 
monitors, mission computing, command and control systems and integrated avionics and electronics systems. Key 
programs include the Integrated Avionics System, the Fiber Optics Acoustic Sensors, and the AN/TYQ-23 Aircraft 
and Command and Control System.

In addition to the product and service lines discussed above, the Electronic Systems segment also includes the 
Advanced Concepts & Technologies Division (AC&TD), which develops next-generation systems to position the 
segment in key developing markets. AC&TD focuses on understanding customer mission needs; conceiving 
affordable, innovative and open solutions; and demonstrating the readiness and effectiveness of Electronic Systems' 
products. The segment uses a “Product Ownership” approach, which guides the transition of new technology from 
laboratory to market and implements modular open system product families that are readily reconfigurable and 
scalable to affordably support new requirements, new products, or component obsolescence.

INFORMATION SYSTEMS

Information Systems, headquartered in McLean, Virginia, is a leading global provider of advanced solutions for the 
DoD, national intelligence, federal civilian, state and local agencies, and international allies, as well as certain 
commercial customers. Focus areas are in cybersecurity; C4ISR; intelligence processing; air and missile defense; 
decision support systems; information technology; and systems engineering and integration.   

Within C4ISR, we are a major end-to-end provider of net-enabled Battle Management C4 systems, decision 
superiority, and mission-enabling solutions. Our systems are installed in operational and command centers world-
wide and across DoD services and joint commands. We also deliver intelligence-related systems and services to the 
U.S. Government and international security community in several mission areas including Signals Intelligence 
(SIGINT) systems, geospatial intelligence data, multi-source intelligence data fusion and dynamic cyber defense. 
Key programs include Joint National Integration Center Research and Development Contract, Battlefield Airborne 
Communications Node, Integrated Battle Command System, Counter Narco-Terrorism Program Office, Counter 
Rocket and Mortar, Consolidated Afloat Networks and Enterprise Services and several restricted programs. 

Cybersecurity offerings span intelligence, defense, federal civilian, state and international customers, providing 
specialized information systems and services in support of critical government missions. Applications are 
predominantly for high end intelligence and defense missions, but also include health, homeland security, public 
safety and civil financial applications. Most intelligence community programs are restricted. Cybersecurity defense 
and civil programs and customers include Virginia Information Technologies Agency, Centers for Disease Control 
and Enterprise Networked Services Support. 

TECHNICAL SERVICES

Technical Services, headquartered in Herndon, Virginia, is a leader in innovative and affordable logistics, 
modernization and sustainment support, and also provides an array of other advanced technology and engineering 
services, including space, missile defense, nuclear security, training and simulation. The segment consists of three 
business areas: Defense and Government Services; Training Solutions; and Integrated Logistics and Modernization.

Defense and Government Services – provides sustainment and modernization of tactical vehicles, high technology 
and engineering services in the areas of nuclear security, space and launch services, civil engineering, and military 
range-sensor-instrumentation operations. Key programs include Intercontinental Ballistic Missile, Fort Irwin 
Logistics Services Support and Fort Polk Logistics Services Support.

Training Solutions – provides realistic and comprehensive training through live, virtual, and constructive domains, 
ranging from senior military leadership to warfighters, for both U.S. and international peacekeeping forces. The 
business area designs and develops future conflict training scenarios, and provides warfighters and allies with live, 
virtual, and constructive training programs. The business area has supported the training of America’s senior 
battlefield commanders for every major contingency beginning with Gulf War I through ongoing operations in 
Afghanistan today. The business area offers innovative and diverse training applications ranging from battle 
command to professional military education. Key programs include the Mission Command Training Program, 

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Mission Command Training Centers, CTC-IS, Joint Coalition Warfighting Center, and Saudi Arabian National 
Guard.

Integrated Logistics and Modernization – provides complete life cycle product and weapon system sustainment and 
modernization. The business area focuses on providing direct support to warfighters while delivering aircraft and 
subsystem maintenance, repair, and overhaul (MRO); modernization of those platforms and systems; supply chain 
management services, warehousing and inventory transportation, field services, and on-going weapons maintenance 
and technical assistance. The business area specializes in quick reaction capability and deployed operations in 
support of customers. Key programs include EA-PUP, Hunter, Triton, FireScout, LEMV, KC-10 and JSTARs.

SELECTED FINANCIAL DATA AND SEGMENT OPERATING RESULTS

For a more complete understanding of our business, see Selected Financial Data in Part II, Item 6. For a more 
complete understanding of our segment financial information, see Segment Operating Results in Part II, Item 7, and 
Note 4 to the consolidated financial statements in Part II, Item 8.

CUSTOMER CONCENTRATION

Our primary customer is the U.S. Government. Revenue from the U.S. Government (which includes foreign military 
sales – a method to sell U.S. defense equipment and services to foreign governments through the DoD) accounted 
for 90 percent or more of total revenues in each of the years ended December 31, 2012, 2011 and 2010. No single 
product or service accounted for more than ten percent of total revenue during any period presented. See Risk 
Factors in Part I, Item 1A.

COMPETITIVE CONDITIONS

We compete with many companies in the defense industry and the intelligence and civil markets. Lockheed Martin 
Corporation, The Boeing Company, Raytheon Company, General Dynamics Corporation, L-3 Communications 
Corporation, SAIC, BAE Systems Inc., EADS, and Finmeccanica SpA are our primary competitors. Key 
characteristics of our industry include long operating cycles and intense competition, which is evident through the 
number of bid protests (competitor protests of U.S. government procurement awards) and the number of competitors 
bidding on program opportunities. 

It is common in the defense industry for work on major programs to be shared among a number of companies. A 
company competing to be a prime contractor may, upon ultimate award of the contract to another competitor, 
become a subcontractor for the ultimate prime contracting company. It is not unusual to compete for a contract 
award with a peer company and, simultaneously, perform as a supplier to or a customer of that same competitor on 
other contracts, or vice versa. 

SEASONALITY

No material portion of our business is considered to be seasonal. 

BACKLOG

Total backlog includes both funded backlog (firm orders for which funding is contractually obligated by the 
customer) and unfunded backlog. Unexercised contract options and indefinite delivery indefinite quantity (IDIQ) 
contracts are not included in backlog, until the time the option or IDIQ task order is exercised or awarded. For multi-
year service contracts with non-U.S. Government customers having no stated contract values, backlog includes only 
the amounts committed by the customer. Backlog is converted into sales as costs are incurred or deliveries are made. 
At December 31, 2012, total backlog was $40.8 billion, compared with $39.5 billion at the end of 2011. 
Approximately $21.4 billion of our backlog at December 31, 2012, is expected to be converted into sales in 2013. 
For backlog by segment, see Backlog in Part II, Item 7.

RESEARCH AND DEVELOPMENT

Our research and development activities primarily include independent research and development (IR&D) efforts 
related to U.S. Government programs. Company-sponsored IR&D efforts are included in general and administrative 
expenses and are generally allocated to U.S. Government contracts, while customer-sponsored research and 
development efforts are charged directly to the related contracts. Company-sponsored IR&D expenses totaled $520 
million, $543 million, and $580 million in 2012, 2011, and 2010, respectively. 

PATENTS

We routinely apply for and own a number of U.S. and foreign patents related to the products and services we 
provide. In addition to owning a large portfolio of proprietary intellectual property, we license some intellectual 

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property rights to and from third parties. The U.S. Government generally holds licenses to patents developed in the 
performance of U.S. Government contracts, and may use or authorize others to use the inventions covered by these 
patents. Although these intellectual property rights are important to the operation of our business, no existing patent, 
license or other intellectual property right is of such importance that its loss or termination would, in our opinion, 
have a material impact on our business. See Risk Factors in Part I, Item 1A.

RAW MATERIALS

We have not experienced significant delays in the supply or availability of raw materials, nor have we experienced a 
significant price increase for raw materials, that would have a notable adverse effect on the company's consolidated 
financial position, results of operations, or cash flows. See Risk Factors in Part I, Item 1A and Overview – Outlook 
in Part II, Item 7.

EMPLOYEE RELATIONS

We believe that we maintain good relations with our 68,100 employees, of which approximately 3,300 are covered 
by 17 collective bargaining agreements. We negotiated or re-negotiated eight of our collective bargaining 
agreements in 2012 and expect to re-negotiate renewals for three of our collective bargaining agreements in 2013. 
These negotiations had no material adverse effect on our results of operations. For risks associated with collective 
bargaining agreements, see Risk Factors in Part I, Item 1A.

REGULATORY MATTERS

Government Contract Regulation
Our businesses are affected by numerous laws and regulations, including those relating to the award, administration 
and performance of U.S. Government contracts. The U.S. Government generally has the ability to terminate our 
contracts, in whole or in part, without prior notice, for convenience or for default based on performance. If a U.S. 
Government contract were to be terminated for convenience, we generally would be protected by provisions 
covering reimbursement for costs incurred on the contract and profit on those costs, but not the anticipated profit 
that would have been earned had the contract been completed. In the unusual circumstance where a U.S. 
Government contract does not have such termination protection, we attempt to mitigate the termination risk through 
other means. Termination resulting from our default may expose us to liability and could have a material adverse 
effect on our ability to compete for other contracts. The U.S. Government also has the ability to stop work under a 
contract for a limited period of time for its convenience. In the event of a stop work order, we generally would be 
protected by provisions covering reimbursement for costs incurred on the contract to date and for costs associated 
with the temporary stoppage of work on the contract. However, such temporary stoppages and delays could 
introduce inefficiencies for which we may not be able to negotiate full recovery from the U.S. Government, and 
could ultimately result in termination for convenience or reduced future orders on certain contracts. Additionally, we 
may be required to continue to perform for some period of time on certain of our U.S. Government contracts, even if 
the U.S. Government is unable to make timely payments. See Risk Factors in Part I, Item 1A.

Certain programs with the U.S. Government that are prohibited by the customer from being publicly discussed in 
detail are referred to as “restricted” in this Form 10-K. The consolidated financial statements and financial 
information in this Form 10-K reflect the operating results of our entire company, including such restricted programs 
under accounting principles generally accepted in the United States of America (GAAP).

Contracts
We generate the majority of our business from long-term contracts with the U.S. Government for development, 
production, and support activities. Due to the long-term nature of our contracts with the U.S. Government and the 
products and services covered by these contracts, we generally recognize revenue on the percentage of completion 
method of accounting. Under the percentage of completion method of accounting, revenues are generally recognized 
as costs are incurred (cost-to-cost method) or as units are delivered (units-of-delivery method). Unless otherwise 
specified in a contract, allowable and allocable costs are billed to contracts with the U.S. Government under the 
requirements of the Federal Acquisition Regulation (FAR) and Cost Accounting Standards (CAS) regulations. 
Examples of costs incurred by us and not billed to the U.S. Government in accordance with the requirements of the 
FAR and CAS regulations include, but are not limited to, certain legal costs, lobbying costs, charitable donations, 
advertising costs and interest expense. Our long-term contracts typically fall into one of two broad categories:

Cost-type contracts – Cost-type contracts include cost plus fixed fee, award fee, and incentive fee contracts. Cost-
type contracts provide for reimbursement of the contractor’s allowable costs incurred plus a fee. Cost-type contracts 
generally require that the contractor use its best efforts to accomplish the scope of the work within some specified 
time and some stated dollar limitation. Fees on cost-type contracts can be fixed in terms of dollar value or 

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percentage of costs. Award fees are based on performance criteria such as cost, schedule, quality, and technical 
performance. Award fees are determined and earned based on an evaluation by the customer of the company's 
performance against negotiated criteria, and are intended to provide motivation for excellence in contract 
performance. Incentive fees provide for an initially negotiated fee to be adjusted later by a formula based on the 
relationship of total allowable costs to total target costs. Award fees and incentive fees that can reasonably be 
estimated and are deemed reasonably assured are recorded over the performance period of the contract. 

Fixed-price contracts – A firm fixed-price contract is a contract in which the specified scope of work is agreed to for 
a price that is a pre-determined, negotiated amount and not generally subject to adjustment regardless of costs 
incurred by the contractor, absent changes in scope by the customer. Fixed-price incentive contracts provide for 
reimbursement of the contractor’s allowable costs plus a fee up to a ceiling amount, but are subject to a cost-share 
limit that affects profitability. Fixed-price incentive contracts effectively become firm fixed-price contracts once the 
cost-share limit is reached. Time-and-materials contracts are considered fixed-price contracts as they specify a fixed 
hourly rate for each labor hour charged.

The following table summarizes revenues for the year ended December 31, 2012, recognized by contract type and 
customer:

($ in millions)
Cost-type contracts
Fixed-price contracts
Total sales

U.S.
Government
       $13,732
8,976
       $22,708

Other
Customers
         $ 283
2,227
         $2,510

Total
       $14,015
11,203
       $25,218

Percent 
of Total

56%
44%
100%

Profit margins may vary materially depending on, among other things, the negotiated contract fee arrangements, the 
achievement of performance objectives, and the stage of performance at which the right to receive fees, particularly 
under incentive and award fee contracts, is finally determined.

We monitor our policies and procedures with respect to our contracts on a regular basis to enhance consistent 
application under similar terms and conditions, as well as compliance with all applicable government regulations 
and laws. In addition, costs incurred and allocated to contracts with the U.S. Government are routinely audited by 
the Defense Contract Audit Agency (DCAA).

Environmental
Our manufacturing operations are subject to and affected by federal, state, foreign, and local laws and regulations 
relating to the protection of the environment. The estimated cost to complete remediation is accrued when it is 
probable that the company will incur costs to address environmental impacts at sites where the company has been 
named a Potentially Responsible Party (PRP) and the costs are estimable. To assess the potential impact on the 
company’s financial statements, management estimates the range of reasonably possible remediation costs that could 
be incurred by the company, taking into account the facts currently available to the company regarding each site, as 
well as the current state of technology and prior experience. These estimates are reviewed periodically and adjusted 
to reflect changes in facts and circumstances. See Risk Factors in Part I, Item 1A, as well as Note 12 to the 
consolidated financial statements in Part II, Item 8.

In 2009, we established a goal of reducing our greenhouse gas emissions over a five-year period through 
December 31, 2014. In 2010, we established goals for water usage and solid waste generation. For information on 
the progress towards achieving our goals, refer to our Corporate Responsibility Report on our Web site. The 
information contained in our Corporate Responsibility Report should not be deemed to be incorporated by reference 
into this report.

We have incurred and expect to continue to incur capital and operating costs to comply with applicable 
environmental laws and regulations and satisfy green initiatives, including our goals. At this time, these costs have 
not had, and we do not expect that these costs will have, a material adverse effect on our consolidated financial 
position, results of operations or cash flows.

EXECUTIVE OFFICERS

See Part III, Item 10, for information about our executive officers.

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AVAILABLE INFORMATION

Our principal executive offices are located at 2980 Fairview Park Drive, Falls Church, Virginia 22042. Our 
telephone number is (703) 280-2900 and our home page on the Internet is www.northropgrumman.com. 

Our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and proxy 
statement for the annual shareholders’ meeting, as well as any amendments to those reports, are available free of 
charge through our Web site as soon as reasonably practicable after we file them with the Securities and Exchange 
Commission (SEC). You can learn more about us by reviewing our SEC filings on the investor relations page of our 
Web site.

The SEC also maintains a Web site at www.sec.gov that contains reports, proxy statements and other information 
about SEC registrants, including Northrop Grumman Corporation. You may also obtain these materials at the SEC’s 
Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549. You can obtain information on the operation 
of the Public Reference Room by calling the SEC at 1-800-SEC-0330.

References to our Web site and the SEC’s Web site in this report are provided as a convenience and do not 
constitute, and should not be viewed as, incorporation by reference of the information contained on, or available 
through, such Web sites. Such information should not be considered a part of this report, unless otherwise expressly 
incorporated by reference in this report.

Item 1A. Risk Factors

Our consolidated financial position, results of operations and cash flows are subject to various risks, many of which 
are not exclusively within our control, that may cause actual performance to differ materially from historical or 
projected future performance. We urge you to carefully consider the risk factors described below in evaluating the 
information contained in this report.

We depend heavily on a single customer, the U.S. Government, for a substantial portion of our business. Changes 
in this customer’s priorities and spending could have a material adverse effect on our financial position, results 
of operations, or cash flows.

Our primary customer is the U.S. Government, from which we derived more than 90 percent of our total revenues 
during each of the past several years. The U.S. Government is implementing significant reductions in government 
spending and other significant program changes. We cannot predict the impact on existing, follow-on, replacement 
or future programs from potential changes in priorities due to changes in defense spending levels, military strategy 
and planning, and/or changes in social-political priorities. A shift in government priorities to programs in which we 
do not participate and/or reductions in funding for or the termination of programs in which we do participate, unless 
offset by other programs and opportunities, could have a material adverse effect on our financial position, results of 
operations and cash flows. 

The U.S. Government generally has the ability to terminate contracts, in whole or in part, without prior notice, for its 
convenience or for default based on performance. In the event of termination for the U.S. Government’s 
convenience, contractors are generally protected by provisions covering reimbursement for costs incurred on the 
contracts and profit on those costs but not the anticipated profit that would have been earned had the contract been 
completed. In some circumstances, however, a U.S. government contract does not have such termination protection. 
In those cases, we attempt to mitigate the termination risk through other means. To the extent such means are 
unavailable or do not fully address the costs incurred or profit on those costs, we could face significant losses from 
the termination for convenience of a contract that lacks termination protection. Termination by the U.S. Government 
of a contract for convenience also could result in the cancellation of future work on that program. Termination by the 
U.S. Government of a contract due to our default could require us to pay for re-procurement costs in excess of the 
original contract price, net of the value of work accepted from the original contract, as well as other damages. 
Termination of a contract due to our default may expose us to material liability and could have a material adverse 
effect on our ability to compete for other contracts.

The U.S. Government also has the ability to stop work under a contract for a limited period of time for its 
convenience. It is possible that the U.S. Government could invoke this ability across a limited or broad number of 
contracts in this challenging fiscal environment. In the event of a stop work order, contractors are generally 
protected by provisions covering reimbursement for costs incurred on the contract to date and for costs associated 
with the temporary stoppage of work on the contract. However, such temporary stoppages and delays could 
introduce inefficiencies for which we may not be able to negotiate full recovery from the U.S. Government, and 
could ultimately result in termination for convenience or reduced future orders on certain contracts. In this 

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challenging environment, our industry could face a significant number of terminations, change orders and stop work 
orders, which by their volume could further delay and jeopardize our industry's ability to recover costs.

Significant delays or reductions in appropriations for our programs and U.S. Government funding more broadly 
may negatively impact our business and programs and could have a material adverse effect on our financial 
position, results of operations or cash flows.

U.S. Government programs are subject to annual congressional budget authorization and appropriation processes. 
For many programs, Congress appropriates funds on a fiscal year basis even though the program performance period 
may extend over several years. Consequently, programs are often partially funded initially and additional funds are 
committed only as Congress makes further appropriations. If we incur costs in excess of funds obligated on a 
contract, we may be at risk for reimbursement of those costs unless and until additional funds are obligated to the 
contract. We cannot predict the extent to which total funding and/or funding for individual programs will be 
included, increased or reduced as part of the annual budget process ultimately approved by Congress or in separate 
supplemental appropriations or continuing resolutions, as applicable. The impact, severity and duration of the 
current U.S. economic situation and plans adopted by the U.S. Government, along with pressures on, and 
uncertainty surrounding, the federal budget and the permissible federal debt limit, could adversely affect the funding 
for individual programs and delay purchasing or payment decisions by our customers. In the event that government 
funding for any of our programs becomes unavailable, or is reduced or delayed, our contract or subcontract under 
such program may be terminated or adjusted by the U.S. Government or the prime contractor, which could have a 
material adverse effect on our financial position, results of operations and/or cash flows. 

In addition, if the existing statutory limit on the amount of permissible federal debt is not raised, we may be required 
to continue to perform for some period of time on certain of our U.S. Government contracts even if the U.S. 
Government is unable to make timely payments. An extended delay in the timely payment of billings by the U.S. 
Government would likely result in a material adverse effect on our financial position, results of operations and cash 
flows.

In August 2011, Congress enacted the Budget Control Act which, while raising the existing statutory limit on the 
amount of permissible federal debt, also committed the U.S. Government to significantly reducing the federal deficit 
over ten years. The Budget Control Act established caps on discretionary spending through 2021, reducing federal 
spending by approximately $1 trillion over that period relative to the fiscal year (FY) 2012 Presidential budget 
submission, and called for very substantial automatic spending cuts, known as "sequestration," split between defense 
and non-defense programs. 

In January 2013, Congress enacted the American Taxpayer Relief Act of 2012. It addressed a number of tax code 
provisions and certain spending issues, but left in place the sequester (although delaying its implementation to 
March 1, 2013) and did not address other fiscal matters such as the debt ceiling. The delay in the sequester leaves 
the DoD less time to enact 2013 automatic spending cuts and adds to the uncertainty from such cuts. The nation's 
debt ceiling is currently expected to be reached during the first half of 2013. Congress and the Administration 
continue to debate these issues and the terms of a possible national fiscal approach. The outcome of that debate 
could have a significant impact on future defense spending plans. While the President's proposed FY 2014 Budget is 
scheduled for release in February 2013, its delivery may be delayed given these unresolved fiscal matters.

We are unable to predict the impact that the delayed automatic cuts or other defense spending cuts would have on 
funding for our individual programs. Long-term funding for certain programs in which we participate may be 
reduced, delayed or cancelled. In addition, these cuts could adversely affect the viability of our suppliers and 
subcontractors. While we believe that our business is well-positioned in areas that the DoD has indicated are areas of 
focus for future defense spending, the impact of the Budget Control Act and the ongoing fiscal debates remain 
uncertain and our business and industry could be materially adversely affected. 

The President's proposed budget for FY 2013 represented a slight decline from FY 2012 levels. Although Congress 
passed a continuing resolution to fund U.S. Government operations through March 27, 2013, it is unclear whether 
annual appropriations bills will be passed during FY 2013. The U.S. Government may operate under a continuing 
resolution for all of FY 2013, potentially resulting in no new contract or program starts for that year. 

The Congressional budget process has been marked by significant debate within the government regarding FY 2013 
defense spending. Budget decisions made in this environment will likely have long-term consequences for our 
company and the entire defense industry. Should sequestration as currently mandated be implemented in March 
2013, absent any other changes, we believe it would have serious negative consequences for the security of our 
country, the defense industrial base, including Northrop Grumman, and the customers, employees, suppliers, 

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NORTHROP GRUMMAN CORPORATION

investors, and communities that rely on the companies in the defense industrial base. There are many variables in 
how the law could be implemented that make it difficult to determine specific impacts; however, we expect that 
sequestration, as currently provided for under the Budget Control Act, would result in lower revenues, profits and 
cash flows for our company. Such circumstances may also result in an impairment of our goodwill.

As a U.S. Government contractor, we are subject to various procurement regulations and could be adversely 
affected by changes in regulations or any negative findings from a U.S. Government audit or investigation.

U.S. Government contractors must comply with many significant procurement regulations and other requirements. 
These regulations and requirements, although customary in government contracts, increase our performance and 
compliance costs. New regulations or procurement requirements (including, for example, counterfeit parts and 
conflict minerals) or changes to current ones, could increase our costs and risks and reduce our margins. Failure to 
comply with these regulations could, among other things, result in the withholding of payments and adversely 
impact our reputation and ability to participate in future U.S. Government contracts.

We operate in a highly regulated environment and are routinely audited and reviewed by the U.S. Government and 
its agencies, such as the Defense Contract Audit Agency (DCAA), Defense Contract Management Agency (DCMA) 
and DoD Inspector General. These agencies review performance under our contracts, our cost structure and our 
compliance with applicable laws, regulations and standards, as well as the adequacy of, and our compliance with, 
our internal control systems and policies. Costs ultimately found to be unallowable or improperly allocated to a 
specific contract will not be reimbursed or must be refunded if already reimbursed. If an audit uncovers improper or 
illegal activities, we may be subject to civil and criminal penalties, sanctions or suspension or debarment from doing 
business with the U.S. Government. Whether or not illegal activities are alleged, the U.S. Government also has the 
ability to decrease or withhold certain payments when it deems systems subject to its review to be inadequate. In 
addition, we could suffer serious reputational harm if allegations of impropriety were made against us. If such 
actions were to result in suspension or debarment, this could have a material adverse effect on our business.

We are from time to time subject to U.S. Government investigations relating to our operations, and we are subject to 
or expected to perform in compliance with a vast array of federal laws, including but not limited to the Truth in 
Negotiations Act, the False Claims Act, the Procurement Integrity Act, Cost Accounting Standards (CAS), Federal 
Acquisition Regulation (FAR), the International Traffic in Arms Regulations promulgated under the Arms Export 
Control Act, the Close the Contractor Fraud Loophole Act and the Foreign Corrupt Practices Act. If we are found to 
have violated the law, or are found not to have acted responsibly as defined by the law, we may be subject to 
reductions of the value of contracts, contract modifications or termination and the assessment of penalties, fines, or 
compensatory or treble damages, which could have a material adverse effect on our financial position, results of 
operations, or cash flows. Such matters could also result in suspension or debarment. Given our dependence on 
government contracting and authorizations, suspension or debarment could have a material adverse effect on our 
financial position, results of operations or cash flows.

Changes to business practices for U.S. Government contractors could have a significant adverse effect on current 
programs, potential new awards and the processes by which procurements are awarded and managed.

Our industry has experienced, and we expect it will continue to experience, significant changes to business practices 
as a result of an increased focus on affordability, efficiencies, and recovery of costs, among other items, and a 
reprioritization of available defense funds to key areas for future defense spending. For example, the DoD’s Better 
Buying Power Initiative continues to evolve in its efforts to reduce costs, gain efficiencies, refocus priorities and 
enhance business practices used by the DoD, including those used to procure goods, services and solutions from 
defense contractors. In addition, the DCMA has implemented cost recovery initiatives designed to prioritize efforts 
to recover costs and close open audits. As a result of certain of these initiatives, we have experienced and may 
continue to experience an increased number of audits and/or a lengthened period of time required to close open 
audits. More recently, the thresholds for certain allowable costs are being challenged and refined.

These efforts have had, and we expect them to continue to have, a significant impact on the contracting environment 
in which we do business. In support of the implementation of the Better Buying Power Initiative, the U.S. 
Government is issuing new regulations and requirements that are shifting additional responsibility and performance 
risks to the contractor. While the impact to our business as a result of these changes remains uncertain, our business 
and industry could be materially adversely affected.

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Competition within our markets and an increase in bid protests may reduce our revenues and market share.

We operate in highly competitive markets and our competitors may have more extensive or more specialized 
engineering, manufacturing and marketing capabilities or be willing to accept more risk or lower margins in 
competing for contracts. We have seen, and anticipate that we will continue to see, increased competition in some of 
our core markets, especially as a result of the reduction in budgets for many U.S. Government agencies and fewer 
new program starts. Changes in U.S. defense spending may limit certain future market opportunities. We are facing 
increasing competition in our domestic and international markets from U.S., foreign and multinational firms. 
Additionally, some customers, including the DoD, may turn to commercial contractors, rather than traditional 
defense contractors, for information technology and other support work, or may utilize small business contractors or 
determine to source work internally rather than hiring a contractor. If we are unable to continue to compete 
successfully against our current or future competitors, we will experience declines in revenues and market share, 
which would negatively impact our financial position, results of operations, or cash flows.

We also are seeing an increasing number of bid protests from unsuccessful bidders on new program awards. Bid 
protests could result in significant expense to the company, contract modifications or the award decision being 
overturned and loss of the contract award. Even where a bid protest does not result in the loss of an award, the 
resolution can extend the time until the contract activity can begin, and delay earnings.

Our future success depends, in part, on our ability to develop new products and new technologies and maintain 
technologies, facilities, equipment and a qualified workforce to meet the needs of current and future customers.

Many of the markets in which we operate are characterized by rapidly changing technologies. The product, program 
and service needs of our customers change and evolve regularly. Our success in the competitive defense industry 
depends upon our ability to develop and market our products and services, as well as our ability to provide the 
people, technologies, facilities, equipment and financial capacity needed to deliver those products and services with 
maximum efficiency. If we fail to maintain our competitive position, we could lose a significant amount of future 
business to our competitors, which would have a material adverse effect on our ability to generate favorable 
financial results and maintain market share.

Our operating results are heavily dependent upon our ability to attract and retain sufficient personnel with requisite 
skills and/or security clearances. If qualified personnel become scarce, we could experience higher labor, recruiting 
or training costs in order to attract and retain such employees. Failure to maintain a qualified workforce would result 
in difficulty in performing under our contracts.

Approximately 3,300 of our 68,100 employees are covered by an aggregate of 17 collective bargaining agreements, 
and we expect to negotiate or re-negotiate renewals for three of our collective bargaining agreements in 2013. 
Collective bargaining agreements generally expire after three to five years, and are subject to renegotiation upon 
expiration. We may experience difficulties with renewals and renegotiations of existing collective bargaining 
agreements. If we experience such difficulties, we could incur additional expenses and may be subject to work 
stoppages. Any such expenses or delays could adversely affect programs served by employees who are covered by 
collective bargaining agreements.

Many of our contracts contain performance obligations that require innovative design capabilities, are 
technologically complex, require state-of-the-art manufacturing expertise or are dependent upon factors not 
wholly within our control. Failure to meet these obligations could adversely affect our profitability and future 
prospects.

We design, develop and manufacture technologically advanced and innovative products and services, which are 
applied by our customers in a variety of environments. Problems and delays in development or delivery as a result of 
issues with respect to design, technology, licensing and patent rights, labor, inability to achieve learning curve 
assumptions, manufacturing materials or components could prevent us from achieving contractual requirements.

In addition, our products cannot be tested and proven in all situations and are otherwise subject to unforeseen 
problems. Examples of unforeseen problems that could negatively affect revenue and profitability include loss on 
launch of spacecraft, premature failure of products that cannot be accessed for repair or replacement, problems with 
quality and workmanship, country of origin, delivery of subcontractor components or services and degradation of 
product performance. These failures could result, either directly or indirectly, in loss of life or property. Among the 
factors that may affect revenue and profits could be unforeseen costs and expenses not covered by insurance or 
indemnification from the customer, diversion of management focus in responding to unforeseen problems, loss of 
follow-on work, and, in the case of certain contracts, repayment to the government customer of contract cost and fee 
payments we previously received.

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NORTHROP GRUMMAN CORPORATION

Certain contracts, primarily involving space satellite systems, contain provisions that entitle the customer to recover 
fees in the event of partial or complete failure of the system upon launch or subsequent deployment for less than a 
specified period of time. Under such terms, we could be required to forfeit fees previously recognized and/or 
collected. We have not experienced any material losses in the last decade in connection with such contract 
performance incentive provisions. However, if we were to experience launch failures or complete satellite system 
failures in the future, for example, such events could have a material adverse effect on our financial position, results 
of operations, or cash flows.

Contract cost growth on fixed-price and other contracts that do not result in increased contract value exposes us 
to reduced profitability and the potential loss of future business.

Our operating income is adversely affected when we incur certain contract costs or certain increases in contract costs 
that cannot be billed to customers. This cost growth can occur if estimates to complete increase or initial estimates 
used for calculating the contract cost were incorrect. The cost estimation process requires significant judgment and 
expertise. Reasons for cost growth may include unavailability or reduced productivity of labor, the nature and 
complexity of the work to be performed, technical or quality issues, the timeliness and availability of materials, 
major subcontractor performance and quality of their products, the effect of any delays in performance, availability 
and timing of funding from the customer, and natural disasters. Further, items affecting our contract value may 
include the inability to recover any claims included in the estimates to complete. A significant change in estimates 
on one or more programs could have a material adverse effect on our consolidated financial position, results of 
operations, or cash flows.

Our risk varies with the type of contract. Due to their nature, firm fixed-price contracts inherently have more risk 
than cost type contracts. In 2012, approximately 44 percent of our annual revenues were derived from fixed-price 
contracts. We typically enter into fixed-price contracts where costs can be reasonably estimated based on experience. 
In addition, our contracts contain provisions relating to cost controls and audit rights. Should the terms specified in 
our contracts not be met, then profitability may be reduced or a loss may be incurred. Fixed-price development work 
comprises a small portion of our fixed-price contracts and inherently has more uncertainty as to future events than 
production contracts and therefore more variability in estimates of the costs to complete the development stage. As 
work progresses through the development stage into production, the risks associated with estimating the total costs 
of the contract are generally reduced. While management uses its best judgment to estimate costs associated with 
fixed-price development contracts, future events could result in either upward or downward adjustments to those 
estimates.

Other contracts are also subject to risk, for example, under a fixed price incentive contract, the allowable costs 
incurred by the contractor are paid up to a ceiling, which can affect profitability. Further, under a cost type contract, 
the allowable costs incurred by the contractor are also subject to reimbursement plus a fee. We often enter into cost 
type contracts for development programs with complex design and technical challenges. These cost type programs 
typically have award or incentive fees that are subject to uncertainty and may be earned over extended periods. In 
these cases, the associated financial risks are primarily in lower profit rates or program cancellation if cost, schedule, 
or technical performance issues arise.

We use estimates when accounting for contracts. Changes in estimates could affect our profitability and our 
overall financial position.

When agreeing to contractual terms, we make assumptions and projections about future conditions and events, many 
of which extend over long periods. These assumptions and projections assess the cost, productivity and availability 
of labor, future levels of business base, complexity of the work to be performed, cost and availability of materials, 
impact of potential delays in performance and timing of product deliveries. Contract accounting requires judgment 
relative to assessing risks, estimating contract revenues and costs, and making assumptions for schedule and 
technical issues. Due to the size and nature of many of our contracts, the estimation of total revenues and costs at 
completion is complicated and subject to many variables. Incentives, awards or penalties related to performance on 
contracts are considered in estimating revenue and profit rates, and are recorded when there is sufficient information 
to assess anticipated performance. Suppliers’ assertions are also assessed and considered in estimating costs and 
profit rates.

Because of the significance of the judgment and estimation processes described above, it is possible that materially 
different amounts could be obtained if different assumptions were used or if the underlying circumstances were to 
change. Changes in underlying assumptions, circumstances or estimates may have a material adverse effect upon the 
profitability of one or more of the affected contracts and our performance. See Critical Accounting Policies, 
Estimates, and Judgments in Part II, Item 7.

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NORTHROP GRUMMAN CORPORATION

Our earnings and margins depend, in part, on subcontractor performance as well as raw material and component 
availability and pricing.

We rely on other companies to provide raw materials and major components for our products and rely on 
subcontractors to produce hardware elements and sub-assemblies and perform some of the services that we provide 
to our customers. Disruptions or performance problems caused by our subcontractors and vendors could have an 
adverse effect on our ability to meet our commitments to customers. Our ability to perform our obligations on time 
as a prime contractor could be adversely affected if one or more of the vendors or subcontractors are unable to 
provide the agreed-upon products or materials or perform the agreed-upon services in a timely and cost-effective 
manner.

Our costs may increase over the term of our contracts. Through cost escalation provisions contained in some of our 
U.S. Government contracts, we may be protected from increases in costs to the extent that the increases in our costs 
are in line with industry indices. However, the difference in basis between our actual costs and these indices may 
expose us to cost uncertainty even with these provisions. A significant delay in supply deliveries of our key raw 
materials or components required in our production processes could have a material adverse effect on our financial 
position, results of operations, or cash flows.

In connection with our government contracts, we are required to procure certain materials, components and parts 
from supply sources approved by the U.S. Government. There are currently several components for which there may 
only be one supplier. If a sole source supplier cannot meet our needs, we may be unable to find a suitable alternative. 
Consistent with the industry’s efforts, our procurement practices are intended to reduce the likelihood of our 
procurement of counterfeit parts or materials. If we are unable to procure needed materials, components or parts, or 
if the parts we procure are counterfeit, our financial position, results of operations, or cash flows could be materially 
adversely affected.

Changes in economic conditions, as well as changes in the defense budget, can adversely affect the ability of our 
subcontractors and suppliers to perform and further increase this risk.

Changes in future business conditions could cause business investments and/or recorded goodwill and other 
long-lived assets to become impaired, resulting in substantial losses and write-downs that would reduce our 
operating income.

Goodwill accounts for approximately half of our recorded total assets. We test goodwill amounts for impairment at 
least annually and consider whether an interim test is required if we believe potential impairment exists. The annual 
impairment test is based on several factors requiring judgment. We face continued uncertainty in our business 
environment due to the substantial fiscal and economic challenges facing the U.S. Government, our primary 
customer, including the potential for sequestration and issues surrounding the national debt ceiling. Potential 
contract cancellations, modifications or terminations may arise from resolution of these issues and could cause our 
revenues, profits and cash flows to be substantially lower than our current projections. In addition, market-based 
inputs to the calculations in the impairment test, such as weighted average cost of capital and terminal value (based 
on market comparisons) could also be negatively impacted. Such circumstances may result in an impairment of our 
goodwill. Further, the carrying values of our reporting units are significantly influenced by a number of factors 
including the discount rate used to determine our net pension liability. Therefore an increase in the discount rate on 
our pension liability in 2013 or beyond could result in an impairment of goodwill absent any changes discussed 
above. We continue to monitor the recoverability of the carrying value of our goodwill and other long-lived assets.

As part of our overall strategy, we may, from time to time, acquire an interest in a business. Even after careful 
integration efforts, actual operating results may vary significantly from initial estimates and we may experience 
unforeseen issues that adversely affect the value of our goodwill or other long-lived assets.

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NORTHROP GRUMMAN CORPORATION

Our international business exposes us to additional risks.

Our international business remains subject to numerous political and economic factors, regulatory requirements and 
other risks associated with doing business in foreign countries. Our international business is subject to U.S. and 
foreign laws and regulations, including, without limitation, regulations relating to import-export control, technology 
transfer restrictions, repatriation of earnings, exchange controls, the Foreign Corrupt Practices Act and certain other 
anti-corruption laws, and the anti-boycott provisions of the U.S. Export Administration Act. Failure by us, our 
employees, or others working on our behalf to comply with these laws and regulations could result in administrative, 
civil, or criminal liabilities, including suspension or debarment from government contracts or suspension of our 
export privileges, which could have a material adverse effect on us. Changes in regulations, political environments 
or security risks may affect our ability to conduct business in foreign markets, including those regarding investment, 
procurement and repatriation of earnings. Our international business may also be impacted by changes in foreign 
national priorities and government budgets and may be further impacted by global economic conditions and 
fluctuations in foreign currency exchange rates. In addition, our international contracts may include industrial 
cooperation agreements requiring specific in-country purchases, investments, manufacturing agreements or other 
financial obligations, known as offset obligations, and provide for penalties if we fail to meet such requirements.

The services and products we provide internationally, including those provided by subcontractors, are sometimes in 
countries with unstable governments, in areas of military conflict or at military installations. This increases the risk 
of an incident resulting in harm or loss of life to our employees, subcontractors or other third parties or damage to 
our products. We maintain insurance and take other steps to mitigate the risk and potential liabilities related to our 
international operations, but these steps may not be adequate to prevent loss or to cover resulting claims and 
liabilities, and we may be forced to bear substantial costs (see additional discussion of possible inadequacy of our 
insurance coverage below). In addition, any accidents or incidents that occur in connection with our international 
operations could result in negative publicity for the company, which may adversely affect our reputation and make it 
more difficult for us to compete for future contracts or attract and retain employees or result in the loss of existing 
and future contracts. The impact of these factors is difficult to predict, but one or more of them could adversely 
affect our financial position, results of operations, or cash flows.

Our reputation and our ability to do business may be impacted by the improper conduct of employees, agents or 
business partners.

We have implemented extensive policies, procedures, training and other compliance controls to prevent misconduct 
by employees, agents or others with whom we are doing business that would violate the applicable laws of the 
jurisdictions in which we operate, including laws governing improper payments to government officials, the 
protection of export controlled or classified information, cost accounting and billing, competition and data privacy. 
However, we cannot ensure that we will prevent all such misconduct committed by our employees, agents or others 
with whom we are doing business, and the risk of improper conduct may increase in the current environment. Such 
improper actions could subject us to administrative, civil or criminal investigations and monetary and non-monetary 
penalties, including suspension and debarment, which could negatively impact our reputation and ability to conduct 
business and could have a material adverse effect on our financial position, results of operations, or cash flows.

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NORTHROP GRUMMAN CORPORATION

Our business could be negatively impacted by security threats, including physical and cybersecurity threats, and 
other disruptions.

As a defense contractor, we face various security threats, including cybersecurity threats to gain unauthorized access 
to sensitive information; threats to the safety of our directors, officers, and employees; threats to the security of our 
facilities and infrastructure; and threats from terrorist acts. Although we utilize various procedures and controls to 
monitor and mitigate these threats, there can be no assurance that these procedures and controls will be sufficient to 
prevent security threats from materializing. If any of these events were to materialize, they could lead to losses of 
sensitive information or capabilities, harm to personnel or infrastructure, or damage to our reputation, and could 
have a material adverse effect on our financial position, results of operations, or cash flows.

Cybersecurity threats are evolving and include, but are not limited to, malicious software, attempts to gain 
unauthorized access to data, denial of service attacks, and other electronic security breaches that could lead to 
disruptions in mission critical systems, unauthorized release of confidential or otherwise protected information and 
corruption of data. These events could damage our reputation and lead to financial losses from remedial actions, loss 
of business or potential liability.

We also manage information technology systems for various customers and other third parties. While we operate 
under information security policies and procedures for managing these systems, we generally face similar 
cybersecurity threats for these systems as for our own.

Unforeseen environmental costs could have a material adverse effect on our financial position, results of 
operations, or cash flows.

Our operations are subject to and affected by a variety of federal, state, local and foreign environmental laws and 
regulations. In addition, we could be affected by future laws or regulations, including those imposed in response to 
climate change concerns and other actions. Compliance with current and future environmental laws and regulations 
currently requires and is expected to continue to require significant operating and capital costs.

Environmental laws and regulations provide for substantial fines and criminal sanctions for violations, and may limit 
our operations or require the installation of costly pollution control equipment or operational changes to limit 
pollution emissions or discharges and/or decrease the likelihood of accidental hazardous substance releases. We also 
incur, and expect to continue to incur, costs to comply with current federal and state environmental laws and 
regulations related to the cleanup of pollutants previously released into the environment. In addition, if we were 
found to be in violation of the Federal Clean Air Act or the Clean Water Act, the facility or facilities involved in the 
violation could be placed by the EPA on the “Excluded Parties List” maintained by the General Services 
Administration. The listing could continue until the EPA concludes that the cause of the violation had been 
corrected. If we were listed on the Excluded Parties List it could have a material adverse effect on our financial 
position, results of operations and cash flows. Listed facilities generally cannot be used in performing any 
U.S. Government contract until the violation is corrected.

The adoption of new laws and regulations, stricter enforcement of existing laws and regulations, imposition of new 
cleanup requirements, discovery of previously unknown or more extensive contamination, litigation involving 
environmental impacts, sanctions or penalties, could negatively impact our ability to recover such costs under 
previously priced contracts or financial insolvency of other responsible parties could cause us to incur costs in the 
future that could have a material adverse effect on our financial position, results of operations, or cash flows.

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NORTHROP GRUMMAN CORPORATION

We are subject to various claims and litigation that could ultimately be resolved against us.

The size, nature and complexity of our business make us highly susceptible to claims and litigation. We are and may 
become subject to various environmental claims, income tax matters, compliance matters, claims, investigations, 
and administrative, civil or criminal litigation, which could divert financial and management resources and result in 
fines, penalties, compensatory or treble damages or non-monetary relief. Government regulations also provide that 
certain allegations against a contractor may lead to suspension or debarment from government contracts or 
suspension of export privileges for the company or one or more of its components. Suspension or debarment could 
have a material adverse effect on the company because of the company's reliance on government contracts and 
authorizations. Investigations, claims or litigation, if ultimately resolved against us, could have a material adverse 
effect on our financial position, results of operations or cash flows. Any investigation, claim, or litigation, even if 
fully indemnified or insured, could negatively impact our reputation among our customers and the public, and make 
it more difficult for us to compete effectively or obtain adequate insurance in the future.

We may be unable adequately to protect our intellectual property rights, which could affect our ability to compete.

We own many U.S. and foreign patents, trademarks, copyrights, and other forms of intellectual property, and we 
license certain intellectual property rights to and from third parties. The U.S. Government generally holds licenses to 
certain intellectual property that we develop in performance of government contracts, and it may use or authorize 
others to use certain such intellectual property. The U.S. Government appears to be asserting or seeking to assert 
more extensive intellectual property rights. Our intellectual property is also subject to challenge, invalidation, 
misappropriation or circumvention by third parties.

We also rely significantly upon proprietary technology, information, processes and know-how that are not protected 
by patents. We seek to protect this information through trade secret or confidentiality agreements with our 
employees, consultants, subcontractors and other parties, as well as through other measures. These agreements and 
other measures may not provide adequate protection for our unpatented proprietary information. In the event of an 
infringement of our intellectual property rights, a breach of a confidentiality agreement or divulgence of proprietary 
information, we may not have adequate legal remedies to maintain our intellectual property. Litigation to determine 
the scope of intellectual property rights, even if ultimately successful, could be costly and could divert 
management’s attention away from other aspects of our business. In addition, our trade secrets may otherwise 
become known or be independently developed by competitors. In some instances, we have licensed the proprietary 
intellectual property of others, but we may be unable in the future to secure the necessary licenses to use such 
intellectual property on commercially reasonable terms. If we are unable adequately to protect our intellectual 
property rights, against claims by the U.S. Government or others our business could be adversely affected.

Our business is subject to disruption caused by natural disasters, environmental disasters and other factors that 
could adversely affect our profitability and our overall financial position.

We have significant operations located in regions of the U.S. that may be exposed to earthquakes, damaging storms, 
and other natural disasters, including environmental disasters. Although preventative measures may help to mitigate 
damage, the damage and disruption resulting from natural and environmental disasters may be significant. If 
insurance or other risk transfer mechanisms are unavailable or insufficient to recover all costs, our financial position, 
results of operations, or cash flows could be materially adversely affected.

Our suppliers and subcontractors are also subject to natural disasters that could affect their ability to deliver or 
perform under a contract. Performance failures by our subcontractors due to natural and environmental disasters 
may adversely affect our ability to perform our obligations on the prime contract. This could reduce our profitability 
due to damages or other costs that may not be fully recoverable from the subcontractor or from the customer, could 
result in a termination of the prime contract and could have an adverse effect on our ability to compete for future 
contracts.

Natural disasters could also disrupt our workforce, electrical and other power distribution networks, including 
computer and internet operation and accessibility, and the critical industrial infrastructure needed for normal 
business operations. These disruptions could cause adverse effects on our profitability and performance.

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NORTHROP GRUMMAN CORPORATION

Our insurance coverage, customer indemnifications or other liability protections may be inadequate to cover all 
of our significant risks or our insurers may deny coverage of or be unable to pay for material losses we incur, 
which could adversely affect our profitability and overall financial position.

We endeavor to obtain insurance agreements from established markets to cover significant risks and liabilities 
(including, for example, natural disasters and product liability). Not every risk or liability can be insured, and, for 
risks that are insurable, the policy limits and terms of coverage reasonably obtainable in the market may not be 
sufficient to cover all actual losses or liabilities incurred. Even if insurance coverage is available, we may not be 
able to obtain it at a price or on terms acceptable to us.  

Disputes with insurance carriers over policy terms or the insolvency of one or more of our insurers may significantly 
affect the amount or timing of cash flows and, if litigation over coverage terms with the insurer becomes necessary, 
an outcome unfavorable to us may have a material adverse effect on our financial position, results of operations, or 
cash flows.  

In some circumstances we may be entitled to certain legal protections or indemnifications from our customers 
through contractual provisions, laws, regulations or otherwise. However, these protections are typically subject to 
certain terms or limitations and may not be sufficient to cover all losses or liabilities incurred.

Anticipated benefits of mergers, acquisitions, joint ventures, spin-offs or strategic alliances may not be realized.

As part of our overall strategy, we may, from time to time, merge with or acquire businesses, dispose of or spin-off 
businesses, form joint ventures or create strategic alliances. Whether we realize the anticipated benefits from these 
transactions depends, in part, upon the integration between the businesses involved, the performance of the 
underlying products, capabilities or technologies, the management of the operations and market conditions following 
these transactions. Accordingly, our financial results could be adversely affected from unanticipated performance 
issues, transaction-related charges, liabilities, amortization of expenses related to intangibles, charges for impairment 
of long-term assets, guarantees, partner performance and indemnifications. Divestitures may result in continued 
financial involvement in the divested business, such as through guarantees, indemnifications, or other financial 
arrangements, following the transaction. Although we have established procedures and processes to mitigate these 
risks, there is no assurance that these transactions will be successful.

Market volatility and adverse capital and credit market conditions may affect our suppliers' ability to access cost-
effective sources of funding and expose us to risks associated with the financial viability of suppliers.

A tightening of credit could adversely affect our suppliers’ ability to obtain financing. Delays in suppliers’ ability to 
obtain financing, or the unavailability of financing, could cause us to be unable to meet our contract obligations and 
could adversely affect our financial position, results of operations, or cash flows. The inability of our suppliers to 
obtain financing could also result in the need for us to transition to alternate suppliers, which could result in 
significant incremental cost and delay or the need for us to provide other supplemental means to support our existing 
suppliers.

Pension and medical expenses associated with our retirement benefit plans may fluctuate significantly depending 
upon changes in actuarial assumptions, future investment performance of plan assets, future trends in health 
care costs and legislative or other regulatory actions.

A substantial portion of our current and retired employee population is covered by pension and other post-retirement 
benefit plans, the costs of which are dependent upon our various assumptions, including estimates of rates of return 
on benefit related assets, discount rates for future payment obligations, rates of future cost growth and trends for 
future costs. In addition, funding requirements for benefit obligations of our pension and post-retirement benefit 
plans are subject to legislative and other government regulatory actions. Variances from these estimates could have a 
material adverse effect on our financial position, results of operations, or cash flows.

Additionally, due to government regulations, pension plan cost recoveries under our government contracts occur in 
different periods from when those pension costs are recognized for financial statement purposes or when pension 
funding is made. These timing differences could have a material adverse effect on our cash flow from operations. In 
December 2011, the cost accounting rules were revised in order to partially harmonize the measurement and period 
of assignment of defined benefit pension plan costs allocable to U.S. Government contracts and the minimum 
required contribution under the Employee Retirement Income Security Act of 1974 (ERISA), as amended by the 
Pension Protection Act (PPA) of 2006. We anticipate that this rule will better align, but not eliminate, mismatches 
between ERISA funding requirements and CAS pension costs for U.S. Government CAS covered contracts. 

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NORTHROP GRUMMAN CORPORATION

Unanticipated changes in our tax provisions or exposure to additional income tax liabilities could affect our 
profitability and cash flow.

We are subject to income taxes in the U.S. and many foreign jurisdictions. Significant judgment is required in 
determining our worldwide provision for income taxes. In the ordinary course of business, there are many 
transactions and calculations where the ultimate tax determination is uncertain. Furthermore, changes in applicable 
domestic or foreign income tax laws and regulations, or their interpretation, could result in higher or lower income 
tax rates assessed or changes in the taxability of certain sales or the deductibility of certain expenses, thereby 
affecting our income tax expense and profitability. Deferred tax assets are required to be measured at the statutory 
tax rate currently in effect, therefore a change in the U.S. corporate tax rate would result in a remeasurement of our 
net deferred tax asset through the income tax provision. The final determination of any tax audits or related litigation 
could be materially different from our historical income tax provisions and accruals. Additionally, changes in our tax 
rate as a result of a change in the mix of earnings in countries with differing statutory tax rates, changes in our 
overall profitability, changes in tax legislation, changes in the valuation of deferred tax assets and liabilities, changes 
in differences between financial reporting income and taxable income, the results of audits and the examination of 
previously filed tax returns by taxing authorities and continuing assessments of our tax exposures could impact our 
tax liabilities and significantly affect our income tax expense, profitability and cash flow. 

Our nuclear-related operations subject us to various environmental, regulatory, financial and other risks.

Our nuclear-related operations subject us to various risks, including potential liabilities relating to harmful effects on 
the environment and human health that may result from nuclear-related operations and the storage, handling and 
disposal of radioactive materials. We are also subject to reputational harm and potential liabilities arising out of a 
nuclear incident, whether or not it is within our control. The U.S. Government and prime contractors provide certain 
indemnity protection under certain of our contracts pursuant to, or in connection with, Public Law 85-804 and the 
Price-Anderson Nuclear Industries Indemnity Act for certain nuclear-related risks. If there was a nuclear incident 
and that indemnity protection was not available to cover our losses and liabilities, it could have a material adverse 
effect on our financial position, results of operations, or cash flows.

If all or any portion of the spin-off of our former Shipbuilding business or certain internal transactions 
undertaken in anticipation of the spin-off transaction are determined to be taxable for U.S. federal income tax 
purposes, we and our shareholders that are subject to U.S. federal income tax may incur significant U.S. federal 
income tax liabilities.

In connection with the spin-off of our former Shipbuilding business, we received a letter ruling from the IRS and an 
opinion of counsel confirming that we and our shareholders would not recognize any taxable income, gain or loss 
for U.S. federal income tax purposes as a result of the merger, the internal reorganization or the distribution, except 
that our shareholders who receive cash in lieu of fractional shares would recognize gain or loss with respect to such 
cash. The ruling and the opinion relied on certain facts, assumptions, representations and undertakings from us and 
HII regarding the past and future conduct of the companies’ respective businesses and other matters.

We are not aware of any facts or circumstances that would cause any of the factual statements or representations in 
the IRS ruling or the opinion to be incomplete or untrue at the time of the spin-off transaction. Nevertheless, if the 
IRS determines that any of the factual statements or representations that the IRS ruling or the opinion was based on 
were incomplete or untrue, or if certain facts or circumstances upon which the IRS ruling or the opinion was based 
were materially different from those at the time of the spin-off, we and our shareholders may not be able to rely on 
the IRS ruling or the opinion of counsel and could be subject to significant tax liabilities.

Even if the spin-off transaction otherwise qualifies as tax-free for U.S. federal income tax purposes, the internal 
reorganization and distribution may be taxable to us (but not to our shareholders) if certain events occur, including, 
if before March 31, 2013 there are one or more acquisitions (including issuances) of the stock of either us or HII, 
representing 50% or more of the then-outstanding stock of either corporation and the acquisition or acquisitions are 
deemed to be part of a plan or series of related transactions that include the distribution; we cease to engage 
appropriately in the conduct of a substantial part of our existing business; or, we or HII repurchase shares in excess 
of specified levels before March 31, 2013. If such tax were incurred, the tax liability would be substantial. HII has 
agreed not to undertake transactions that would reasonably be expected to trigger such tax, and we intend to avoid 
any such transactions.

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NORTHROP GRUMMAN CORPORATION

The spin-off of our former Shipbuilding business may expose us to potential claims and liabilities.

In connection with the spin-off transaction, we entered into a number of agreements with HII setting forth certain 
rights and obligations of the parties after the separation. For example, under the Separation and Distribution 
Agreement, from and after the spin-off transaction, each of HII and Northrop Grumman is generally responsible for 
the debts, liabilities and other obligations related to the business or businesses that it owns and operates following 
the consummation of the spin-off. It is possible that a court would disregard the allocation agreed to between us and 
HII, and require that we assume responsibility for certain obligations allocated to HII (for example, tax and/or 
environmental liabilities), particularly if HII were to refuse or were unable to pay or perform such obligations.

In addition, third parties could seek to hold us responsible for any of the liabilities or obligations for which HII has 
agreed to be responsible and/or to indemnify us, directly or indirectly. The indemnity related rights we have under 
our agreements with HII may not be sufficient to protect us against such liabilities. Even if we ultimately succeed in 
recovering from HII or the U.S. Government any amounts for which we are held liable, we may be required to 
record these losses ourselves until such time as the indemnity contribution is paid. In addition, certain indemnities 
that we may be required to provide HII are not subject to a cap, may be significant, and could negatively impact our 
business. These risks could negatively affect our business and could have a material adverse effect on our financial 
position, results of operations, or cash flows.

Item 1B. Unresolved Staff Comments

None.

FORWARD-LOOKING STATEMENTS AND PROJECTIONS

This Form 10-K and the information we are incorporating by reference contain statements, other than statements of 
historical fact, that constitute “forward-looking statements” within the meaning of the Private Securities Litigation 
Reform Act of 1995. Words such as “expect,” “intend,” “may,” “could,” “plan,” “project,” “forecast,” “believe,” 
“estimate,” “outlook,” “anticipate,” “trends” and similar expressions generally identify these forward-looking 
statements. Forward-looking statements are based upon assumptions, expectations, plans and projections that we 
believe to be reasonable when made. These statements are not guarantees of future performance and inherently 
involve a wide range of risks and uncertainties that are difficult to predict. Specific factors that could cause actual 
results to differ materially from those expressed or implied in the forward-looking statements include, but are not 
limited to, those identified under Risk Factors in Part I, Item 1A and other important factors disclosed in this report 
and from time to time in our other filings with the SEC.

You are urged to consider the limitations on, and risks associated with, forward-looking statements and not unduly 
rely on the accuracy of predictions contained in such forward-looking statements. These forward-looking statements 
speak only as of the date this report is first filed or, in the case of any document incorporated by reference, the date 
of that document. We undertake no obligation to publicly update or revise any forward-looking statements, whether 
as a result of new information, future events or otherwise, except as required by applicable law.

Item 2. Properties

At December 31, 2012, we owned or leased approximately 35 million square feet of floor space at approximately 
513 separate locations, primarily in the U.S., for manufacturing, warehousing, research and testing, administration 
and various other uses. At December 31, 2012, we leased to third parties approximately 549,000 square feet of our 
owned and leased facilities, and had vacant floor space of approximately 357,000 square feet. 

At December 31, 2012, we had major operations at the following locations:

AEROSPACE SYSTEMS

Carson, El Segundo, Manhattan Beach, Mojave, Palmdale, Redondo Beach, and San Diego, CA; Melbourne and St. 
Augustine, FL; Devens, MA; Bethpage, NY.

ELECTRONIC SYSTEMS

Azusa, Sunnyvale and Woodland Hills, CA; Norwalk, CT; Apopka, FL; Rolling Meadows, IL; Annapolis, Elkridge, 
Halethorpe, Linthicum and Sykesville, MD; Williamsville, NY; Cincinnati, OH; Salt Lake City, UT; and 
Charlottesville, VA. Locations outside the U.S. include United Kingdom, France, Germany, and Italy.

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NORTHROP GRUMMAN CORPORATION 

INFORMATION SYSTEMS 

Huntsville, AL; Carson, McClellan, Redondo Beach, San Diego, and San Jose, CA; Aurora and Colorado Springs 
CO; Annapolis Junction, MD; Bellevue, NE; Beavercreek, OH; and Chantilly, Chester, Fairfax, Herndon, McLean, 
Reston, and Richmond, VA.

TECHNICAL SERVICES

Sierra Vista, AZ; Warner Robins, GA; Lake Charles, LA; Clearfield, UT; and Herndon, VA.

CORPORATE

Falls Church and Lebanon, VA; and Irving, TX.

The following is a summary of our floor space at December 31, 2012:

Square feet (in thousands)
Aerospace Systems
Electronic Systems
Information Systems
Technical Services
Corporate
Total

Owned
6,380
8,222
657
115
657
16,031

Leased
5,049
2,895
6,379
1,889
880
17,092

U.S. Government
Owned/Leased

1,930
—
—
—
—
1,930

Total
13,359
11,117
7,036
2,004
1,537
35,053

We maintain our properties in good operating condition and believe that the productive capacity of our properties is 
adequate to meet current contractual requirements and those for the foreseeable future.

Item 3. Legal Proceedings

We have provided information about certain legal proceedings in which we are involved in Note 11 to the 
consolidated financial statements in Part II, Item 8.

We are a party to various investigations, lawsuits, claims and other legal proceedings, including government 
investigations and claims, that arise in the ordinary course of our business. These types of matters could result in 
fines, penalties, compensatory or treble damages or non-monetary relief. U.S. Government regulations also provide 
that certain allegations against a contractor may lead to suspension or debarment from future U.S. Government 
contracts or suspension of export privileges for the company or one or more of its components. Suspension or 
debarment could have a material adverse effect on the company because of the company's reliance on government 
contracts and authorizations. The nature of legal proceedings is such that we cannot assure the outcome of any 
particular matter. However, based on information available to us to date and other than as noted in Note 11 to the 
consolidated financial statements, we do not believe that the outcome of any matter pending against the Company is 
likely to have a material adverse effect on the company's consolidated financial position as of December 31, 2012 or 
its annual results of operations or cash flows. For further information on the risks we face from existing and future 
investigations, lawsuits, claims and other legal proceedings, please see Risk Factors in Part I, Item 1A, of this report. 

Item 4. Mine Safety Disclosures

No information is required in response to this item.

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NORTHROP GRUMMAN CORPORATION 

PART II

Item 5. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of 
Equity Securities

(a)  Market Information

Our common stock is listed on the New York Stock Exchange and trades under symbol NOC.

The following table sets forth, for the periods indicated, the high and low sale prices of our common stock as 
reported in the consolidated reporting system for the New York Stock Exchange Composite Transactions. 

January to March(1)
April to June
July to September
October to December

2012

2011

  $57.31 to $62.31
   56.59  to  65.78
   61.86  to  70.20
   62.80  to  71.25

$62.23  to $72.50
  59.87  to   70.50
  49.20  to   70.61
  50.13  to   59.83

(1)  The stock prices for the quarter ended March 31, 2011 have not been adjusted for the impact of the 

Shipbuilding spin-off.

(b)  Holders

The approximate number of common stockholders was 29,333 as of January 31, 2013.

(c)  Dividends

Quarterly dividends per common share for the most recent two years are as follows:

January to March
April to June
July to September
October to December
Total

Common Stock

2012
$0.50
  0.55
  0.55
  0.55
$2.15

2011
$0.47
  0.50
  0.50
  0.50
$1.97

We have 800,000,000 shares authorized at a $1 par value per share, of which 239,209,812 shares and 
253,889,622 shares were outstanding as of December 31, 2012 and 2011, respectively.

Preferred Stock

We have 10,000,000 shares authorized at a $1 par value per share, of which no shares were issued and 
outstanding as of December 31, 2012, and 2011.

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NORTHROP GRUMMAN CORPORATION 

(d)  Stock Performance Graph

Comparison of Cumulative Five Year Total Return
Among Northrop Grumman Corporation, the S&P 500 Index,
and the S&P Aerospace & Defense Index

$120

$100

$80

$60

$40

2007

2008

2009

2010

2011

2012

Northrop Grumman Corporation

S&P 500 Index

S&P Aerospace & Defense Index

(1)  Assumes $100 invested at the close of business on December 31, 2007, in Northrop Grumman 

Corporation common stock, Standard & Poor’s (S&P) 500 Index and the S&P Aerospace & Defense 
Index.

(2)  The cumulative total return assumes reinvestment of dividends. In March 2011, we completed the HII 

spin-off. Our shareholders received one share of HII common stock for every six shares of our common 
stock held on the record date. The effect of the spin-off is reflected in the cumulative total return as a 
reinvested dividend.

(3)  The S&P Aerospace & Defense Index is comprised of The Boeing Company, General Dynamics 
Corporation, Honeywell International Inc., L-3 Communications, Lockheed Martin Corporation, 
Northrop Grumman Corporation, Precision Castparts Corporation, Raytheon Company, Rockwell 
Collins, Inc., Textron, Inc. and United Technologies Corporation.

(4)  The total return is weighted according to market capitalization of each company at the beginning of each 

year.

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NORTHROP GRUMMAN CORPORATION 

(e)  Purchases of Equity Securities by the Issuer and Affiliated Purchasers.

The table below summarizes our repurchases of common stock during the three months ended December 31, 
2012: 

Numbers
of Shares
Purchased
as Part
of Publicly
Announced
Plans or
Programs

824,990
2,697,026
3,745,800
7,267,816

Approximate Dollar 
Value of Shares that 
May Yet Be 
Purchased Under the 
Plans or Programs 
($ in millions)

$1,907
1,728
1,476
$1,476

Number
of Shares
Purchased(1)
824,990
2,697,026
3,745,800
7,267,816

Average 
Price
Paid per
Share(2)
$68.80
66.11
67.24
$66.99

Period
October 1 through October 31, 2012
November 1 through November 30, 2012
December 1 through December 31, 2012
Ending balance

(1)  In June 2010, our board of directors authorized a share repurchase program of up to $2.0 billion of the 
company’s common stock. Following this initial authorization, our board of directors increased the 
remaining repurchase authorization to $4.0 billion in April 2011. After further repurchases reduced the 
remaining authorization to less than $1 billion, the board of directors again increased the remaining 
authorization to $2.0 billion in September 2012. As of December 31, 2012, repurchases under the program 
totaled $3.9 billion and $1.5 billion remained under this share repurchase authorization. The repurchase 
program will expire when we have used all authorized funds for repurchase.

(2)  Includes commissions paid.

Share repurchases take place under pre-established programs, depending on market conditions, in the open 
market, or in privately negotiated transactions. The company retires its common stock upon repurchase and has 
not made any purchases of common stock other than in connection with these publicly announced repurchase 
program authorizations. 

In connection with the spin-off of the former shipbuilding business (see Note 3 in Part II, Item 8), we obtained a 
Private Letter Ruling from the Internal Revenue Service that generally limits our share repurchases to 
approximately 88 million shares within two years of the spin-off. The limitation expires on March 31, 2013. 
Since the spin-off we have repurchased approximately 61 million shares of our common stock, and as of 
December 31, 2012, the company may repurchase approximately 27 million shares under the Private Letter 
Ruling limitation. Cash available from unusual transactions, such as the disposition of significant assets, should 
they arise, can be used to repurchase additional shares.

(f)    Securities Authorized for Issuance Under Equity Compensation Plans.

For a description of securities authorized under our equity compensation plans, see Note 14 to our consolidated 
financial statements in Part II, Item 8.

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NORTHROP GRUMMAN CORPORATION 

Item 6. Selected Financial Data

The data presented in the following table is derived from the audited consolidated financial statements and other 
information, all adjusted to reflect the effects of discontinued operations. See also Other Matters – Business 
Dispositions in Part II, Item 7.

Selected Financial Data

$ in millions, except per share amounts

2012

2011

2010

2009

2008

Year Ended December 31

Sales

U.S. Government

Other customers

Total sales

Operating income

Earnings from continuing operations

Basic earnings per share, from continuing operations
Diluted earnings per share, from continuing operations
Cash dividends declared per common share
Year-End Financial Position

Total assets

Notes payable to banks and long-term debt
Total long-term obligations and preferred stock(1)
Financial Metrics

Cash provided by continuing operations
Free cash flow from continuing operations(2)
Other Information

$ 22,708

$ 23,905

$ 25,507

$ 24,955

$ 23,274

2,510

25,218

3,130

1,978

7.96
7.81
2.15

$

2,507

2,636

2,695

2,977

26,412

28,143

27,650

26,251

$

3,276

2,086

7.54
7.41
1.97

$

2,827

1,904

6.41
6.32
1.84

$

2,274

1,434

4.49
4.44
1.69

$

2,076

1,018

3.04
2.98
1.57

$ 26,543

$ 25,411

$ 31,410

$ 30,297

$ 30,077

3,935

10,973

3,948

8,940

4,724

7,947

4,011

8,959

3,661

8,926

$ 2,640

$ 2,347

$ 2,056

$ 1,995

$ 2,705

2,309

1,855

1,471

1,454

2,132

Company-sponsored research and development expenses

$

520

$

543

$

580

$

588

$

543

Total backlog

Square footage at year-end (in thousands)

Number of employees at year-end

40,809

35,053

68,100

39,515

37,397

72,500

46,842

38,218

79,600

48,741

37,990

81,800

54,062

39,962

81,418

(1) 

(2) 

In 2008, all of the outstanding shares of preferred stock were converted or redeemed. Total long-term 
obligations includes the long-term portions of debt, pension and post-retirement plan liabilities, environmental 
liabilities, deferred compensation and other long-term obligations. 
Free cash flow from continuing operations is a non-GAAP financial measure and is calculated as cash 
provided by continuing operations less capital expenditures. See Liquidity and Capital Resources – Free Cash 
Flow from Continuing Operations in Part II, Item 7 for more information on this measure.

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NORTHROP GRUMMAN CORPORATION 

Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations

OVERVIEW

Political and Economic Environment
The U.S. Government continues to face substantial fiscal and economic challenges that affect funding for its non-
discretionary and discretionary budgets. Part I of the Budget Control Act of 2011 (Budget Control Act) provided for 
a reduction in defense budgets by at least $487 billion over a ten year period. Part II provided the potential for 
substantial additional reductions, through a process known as “sequestration.” The President's proposed fiscal year 
(FY) 2013 budget represented a slight decline for defense from FY 2012. While Congress has not passed a FY 2013 
budget, it did pass a six-month continuing resolution that funds the U.S. Government through March 27, 2013. This 
continuing resolution restricts new starts and provides for discretionary spending levels that represent a slight 
increase over the FY 2012 budget. It is unclear whether annual appropriations bills will be passed during FY 2013. 
The U.S. Government may operate under a continuing resolution for all of FY 2013, restricting new contract or 
program starts for that year.

The American Taxpayer Relief Act of 2012 was enacted in January 2013. It addressed a number of tax code 
provisions and certain spending issues but left in place the sequester (although delaying its implementation to March 
1, 2013) and did not address other fiscal matters such as the debt ceiling. The nation's debt ceiling is currently 
expected to be reached during the first half of 2013. Congress and the Administration continue to debate these issues 
and the terms of a possible national fiscal approach. The outcome of that debate could have a significant impact on 
future defense spending plans. While the President's proposed FY 2014 budget is scheduled for release in February 
2013, its delivery may be delayed given these unresolved broad fiscal matters.

The Congressional budget process to finalize FY 2013 defense spending also has been marked by continued 
uncertainty and significant debate, increasing the possibility of sequestration occurring. As noted above, the Budget 
Control Act calls for additional substantial defense spending reductions through sequestration, if Congress is unable 
to agree on a budget that conforms with the Budget Control Act requirements. Should sequestration, as currently 
mandated, be implemented in March 2013, absent any other changes, we expect it would have serious negative 
consequences for the security of our country, the defense industrial base, including Northrop Grumman, and the 
customers, employees, suppliers, investors, and communities that rely on the companies in the defense industrial 
base.

There continues to be much uncertainty also regarding how sequestration would be implemented, if it were to go 
into effect. There are many variables in how the law could be applied that make it difficult to determine the specific 
impacts. However, we expect that sequestration, as currently provided for under the Budget Control Act, would 
result in lower revenues, profits and cash flows for our company.

Members of Congress are discussing various options to address sequestration's automatic spending cuts. While we 
cannot predict the outcome of these efforts, it is likely that budget decisions made in this environment will have 
long-term consequences for our company and the entire defense industry.

In addition to fiscal and budgetary constraints, we expect defense spending to be affected by the drawdown of U.S. 
force levels tied to current major overseas deployments and other shifts in defense missions and priorities. As overall 
defense spending declines, the Department of Defense (DoD) is continuing to re-evaluate the role and structure of 
the U.S. military. In 2012, the DoD announced a new defense strategy intended to guide its priorities and budgeting 
decisions. The guidance calls for the U.S. military to project power globally and operate effectively in all domains, 
including cybersecurity, and it places particular emphasis on Asia Pacific as an area of strategic focus.

We believe that spending on recapitalization, modernization and maintenance of defense, intelligence, and homeland 
security assets will continue to be a national priority. Future defense spending is expected to include the 
development and procurement of new manned and unmanned military platforms and systems along with advanced 
electronics and software to enhance the capabilities of existing individual systems and provide real-time integration 
of individual surveillance, information management, strike, and battle management platforms. We expect significant 
new competitive opportunities to include long range strike, missile defense, command and control, network 
communications, enhanced situational awareness, satellite systems, restricted programs, cybersecurity, technical 
services and information technology contracts, as well as numerous international and homeland security programs.

See Risk Factors located in Part I, Item 1A for a more complete description of risks we face.

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NORTHROP GRUMMAN CORPORATION 

Operating Performance Assessment and Reporting
We manage and assess the performance of our business based on our performance on contracts and programs (two or 
more closely-related contracts), with consideration given to the Critical Accounting Policies, Estimates and 
Judgments described later in this section. Revenue on our portfolio of long-term contracts is generally recognized 
using the percentage of completion method, primarily the cost-to-cost method, but in some cases the units-of-
delivery method of percentage of completion accounting. As a result, sales tend to fluctuate in concert with costs 
across our large portfolio of contracts. Due to Federal Acquisition Regulations (FAR) rules that govern our business, 
most types of costs are allowable, and we do not focus on individual cost groupings (such as manufacturing, 
engineering, and design labor costs, subcontractor costs, material costs, overhead costs, and general and 
administrative costs), as much as we do on total contract costs, which is the key driver of both sales and operating 
income.

Our contract management process involves the use of contract estimates-at-completion (EACs) that are generally 
prepared and evaluated on a bottoms-up basis at least annually and reviewed on a quarterly basis over the contract's 
period of performance. These EACs include an estimated contract operating margin based initially on the contract 
award amount, adjusted to reflect estimated risks related to contract performance. These risks typically include 
technical risk, schedule risk and performance risk based on our evaluation of the contract effort. Similarly, the EACs 
include identified opportunities for operating margin rate improvement. Over the contract's period of performance, 
our program management organizations perform evaluations of contract performance and adjust the contract revenue 
and cost estimates to reflect the latest reliable information available. 

Our business and program management organizations are comprised of skilled professional managers whose 
objective is to satisfy the customer's expectations, deliver high quality products and services, and manage contract 
risks and opportunities to achieve an appropriate operating margin rate on the contract. Our comprehensive business 
and contract management process is a coordinated process involving personnel with expertise from various 
disciplines including production control, contracts, cost management, mission assurance and quality, finance and 
supply chain, among others. As part of this overall contract management function, these personnel monitor 
compliance with our critical accounting policies related to contract accounting and compliance with U.S. 
Government regulations. Contract operating income and period-to-period contract operating margin rates are 
adjusted over the contract's period of performance to reflect the latest estimated revenue and cost for the contract, 
including changes in the risks and opportunities affecting the contract. Such adjustments may have a favorable or 
unfavorable effect on operating income depending upon the specific conditions affecting each contract.

In evaluating our operating performance, we look primarily at changes in sales and operating income, including the 
effects of meaningful changes in operating income as a result of changes in contract estimates. Where applicable, 
significant fluctuations in operating performance attributable to individual contracts or programs, or changes in a 
specific cost element across multiple contracts are described in our analysis. Based on this approach and the nature 
of our operations, the discussion of results of operations first focuses around our four segments before distinguishing 
between products and services. Changes in sales are generally described in terms of volume, deliveries or other 
indicators of sales activity, and contract mix. For purposes of this discussion, volume generally refers to increases or 
decreases in cost or sales from production/service activity levels or delivery rates. Performance refers to changes in 
contract margin rates for the period, primarily related to the changes in estimates referred to above.

CONSOLIDATED OPERATING RESULTS

Selected financial highlights, excluding the results of discontinued operations, are presented in the table below:

$ in millions, except per share amounts
Sales
Operating costs and expenses
Operating income
Operating margin rate
Interest expense
Federal and foreign income tax expense
Effective income tax rate
Diluted earnings per share
Cash provided by continuing operations

Year Ended December 31
2011
$26,412
23,136
3,276
12.4%
     $ (221)
$    997

2012
$25,218
22,088
3,130
12.4%
    $ (212)
$     987

2010
$28,143
25,316
2,827
10.0%
     $ (269)
$    462

33.3%

32.3%

19.5%

$    7.81
$  2,640

$   7.52
$ 2,347

$   6.82
$ 2,056

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NORTHROP GRUMMAN CORPORATION 

Consolidated operating results for the year ended December 31, 2012, reflect our customer's overall lower spending 
levels, lower sales due to our portfolio shaping actions and our focus on working capital. Our margin rates and cash 
provided by operating activities demonstrate strong operating performance, and our continued focus on performance 
and affordability, as further discussed below.

Segment operating income, as reconciled below, is a non-GAAP measure and is used by management as an internal 
measure of the financial performance of our individual operating segments.

$ in millions

Segment operating income
Segment operating margin rate

Year Ended December 31

2012

$3,176

2011

$3,055

2010

$3,010

12.6%

11.6%

10.7%

The table below reconciles segment operating income to total operating income:

$ in millions

Segment operating income

     FAS pension expense in accordance with GAAP

     Pension expense in accordance with CAS

Net FAS/CAS pension adjustment

Unallocated corporate expenses

Other

Total operating income

Year Ended December 31

2012

2011

2010

$3,176
(374)
506

132
(168)
(10)
$3,130

$3,055
(238)
638

400
(166)
(13)
$3,276

$3,010
(461)
471

10
(182)
(11)
$2,827

For financial statement purposes, we account for our employee pension plans in accordance with GAAP under 
Financial Accounting Standards (FAS). We charge the costs of these plans to our contracts in accordance with the 
FAR and the related Cost Accounting Standards (CAS) that govern such plans. The net FAS/CAS pension 
adjustment is pension expense determined in accordance with GAAP less pension expense charged to contracts and 
included in segment operating income. Unallocated corporate expenses generally include the portion of corporate 
expenses, other than FAS pension costs, not considered allowable or allocable under applicable CAS and FAR rules, 
and therefore not allocated to the segments, such as a portion of management and administration, legal, 
environmental, certain compensation and retiree benefits, and other expenses.

Sales
2012 – Sales for 2012 decreased $1.2 billion, or 5 percent, as compared to 2011, reflecting lower sales in three of 
our four operating segments.

2011 – Sales for 2011 decreased $1.7 billion, or 6 percent, as compared to 2010, reflecting lower sales at all four 
operating segments.

The table below shows the variances in segment sales from the respective prior years:

$ in millions

Aerospace Systems

Electronic Systems

Information Systems

Technical Services

Intersegment sales elimination

Variance from Prior Year

2012

$  13
(422)
(565)
(174)
(46)

0%
(6%)
(7%)
(5%)
(2%)

2011

($472)
(241)
(474)
(512)
(32)

(5%)

(3%)

(6%)

(14%)

(2%)

For further information by segment refer to the Segment Operating Results below, and for product and service detail, 
refer to the Product and Service Analysis section that follows. 

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NORTHROP GRUMMAN CORPORATION 

Operating Costs and Expenses
Operating costs and expenses are primarily comprised of labor, material, subcontractor, and overhead costs, and are 
generally allocated to contracts as they are incurred. In accordance with industry practice and the regulations that 
govern cost accounting requirements for government contracts, most general management and corporate expenses 
incurred at the segment and corporate locations are considered allowable and allocable costs. These general and 
administrative costs are generally allocated on a systematic basis to contracts in progress. 

Operating costs and expenses consist of the following:

$ in millions
Product and service costs

General and administrative

Operating costs and expenses

Year Ended December 31

2012

2011

2010

$19,638

$20,786

$22,849

2,450

2,350

2,467

$22,088

$23,136

$25,316

2012 – Product and service costs for 2012 decreased $1.1 billion, or 6 percent, as compared to 2011. The primary 
driver of the reduction in product and service costs was reduced volume at Electronic Systems, Information Systems 
and Technical Services. General and administrative expenses as a percentage of total sales increased to 9.7 percent 
in 2012, from 8.9 percent in 2011; the increase includes the impact of lower sales, higher indirect costs related to 
compensation accruals and cost classification changes to standardize cost accounting practices at one of our 
segments, as well as higher bid and proposal expenses.

2011 – Product and service costs for 2011 decreased $2.1 billion, or 9 percent, as compared to 2010. The primary 
driver of the reduction in product and service costs is reduced volume at all four of our segments, with Aerospace 
Systems, Information Systems and Technical Services driving the majority of the decrease. General and 
administrative expenses as a percentage of total sales was comparable at 8.9 percent.

For the product and service costs detail, see the Product and Service Analysis section that follows. 

Operating Income
We define operating income as sales less operating costs and expenses, which includes general and administrative 
expenses. Changes in estimated sales, operating costs and expenses, and the resulting operating income related to 
our contracts accounted for using the percentage-of-completion method are recorded using the cumulative catch-up 
method of accounting. The aggregate effects of these favorable and unfavorable changes in our estimated costs at 
completion, across our portfolio of contracts, can have a significant effect upon our reported sales and operating 
income in each of our reporting periods. Cumulative catch-up operating income adjustments are presented in the 
table below: 

$ in millions

Favorable adjustments

Unfavorable adjustments

Net operating income adjustments

Year Ended December 31

2012

2011

2010

$1,270
(285)
$   985

$1,123
(385)
$   738

$945
(270)
$675

Cost reduction initiatives to increase our competitiveness contributed to the net favorable operating income 
adjustments. Our cost management activities have led to overall improved contract performance, reflected in both 
increased favorable adjustments and lower unfavorable adjustments. 

Segment Operating Income
Segment operating income is defined as operating income less certain corporate-level expenses that are not 
considered allowable or allocable under applicable CAS and FAR and the net FAS/CAS pension difference.

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NORTHROP GRUMMAN CORPORATION 

The table below shows the variances in segment operating income from the respective prior years:

$ in millions

Aerospace Systems

Electronic Systems

Information Systems

Technical Services

Intersegment earnings elimination

Variance from Prior Year

2012

2011

$    1

117
(5)
8

—

0%

11%
(1%)
3%

0%

$   4

47

10

11
(27)

0%

5%

1%

4%

(12%)

2012 - Segment operating income in 2012 increased $121 million, or 4 percent, as compared to 2011, driven by a 
number of factors including improved performance, particularly at Electronic Systems. Improved performance 
reflects mitigation of contract risks and cost reduction initiatives, as well as portfolio shaping efforts. The increase in 
segment operating margin rate reflects this improved segment performance on lower revenue.

2011 - Segment operating income in 2011 increased $45 million, or 1 percent, as compared to 2010, driven by 
improved program performance, which more than offset the impact of lower sales.

Net Pension Adjustment
The net FAS/CAS pension adjustment in 2012 decreased $268 million, as compared to 2011, primarily due to 
increased GAAP pension expense resulting from amortization of prior year actuarial losses and decreased CAS 
pension expense allocated to the operating segments due to the design change in the company's defined benefit 
pension plans adopted in December 2011. The net FAS/CAS pension adjustment in 2011 increased $390 million, as 
compared to 2010, primarily due to decreased GAAP pension expense, primarily resulting from higher than 
estimated returns on a larger amount of pension plan assets as of the beginning of the year.

Unallocated Corporate Expenses
Unallocated corporate expenses for 2012 were comparable with the prior year. Unallocated corporate expenses for 
2011 decreased $16 million, or 9 percent, as compared with 2010, primarily due to a decrease in stock-based 
compensation. 

Interest Expense
Interest expense declined in both 2012 and 2011 by $9 million and $48 million, respectively, as compared to the 
respective prior years. The decrease from 2010 to 2011 is primarily due to a lower weighted average interest rate 
resulting from our debt refinancing in November 2010.

Federal and Foreign Income Taxes
2012 – Our effective tax rate on earnings from continuing operations for 2012 was 33.3 percent, as compared with 
32.3 percent in 2011. The higher effective tax rate reflects the change in net tax benefits related to the absence of 
research tax credits, which expired at the end of 2011. Although the American Taxpayer Relief Act of 2012 extended 
the research tax credit through 2013, it was not enacted until January 2013. Therefore, the 2012 research credit will 
be recorded in the first quarter of 2013. 

2011 – Our effective tax rate on earnings from continuing operations for 2011 was 32.3 percent, as compared with 
19.5 percent in 2010. In 2010, we recognized net tax benefits of $298 million to reflect the final approval from the 
IRS and the U.S. Congressional Joint Committee on Taxation of the IRS’ examination of our tax returns for the 
years 2004 through 2006.  

Diluted Earnings Per Share
2012 – Our diluted earnings per share increased by $0.29, or 4 percent. The higher diluted earnings per share reflects 
the full impact of 2011 share repurchases, which were largely purchased in the second half of 2011, the effect of our 
2012 share repurchases and the higher segment operating income, partially offset by lower earnings reflecting the 
lower net FAS/CAS pension adjustment. 

2011 – Our diluted earnings per share increased by $0.70, or 10 percent. The higher diluted earnings per share 
reflects higher earnings and the effects of our share repurchases.

Cash Provided by Continuing Operations
2012 – Cash provided by continuing operations for 2012 was $2.6 billion, as compared with $2.3 billion in 2011. 
Cash provided by continuing operations reflects lower pension contributions, partially offset by higher income taxes 

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NORTHROP GRUMMAN CORPORATION 

paid. In 2012, we contributed $367 million to our pension plans, of which $300 million was voluntarily pre-funded, 
as compared with $1.1 billion in 2011, of which $1.0 billion was voluntarily pre-funded. 

2011 – Cash provided by continuing operations in 2011 was $2.3 billion, as compared with $2.1 billion in 2010. The 
increase in 2011 reflects lower tax payments, timing of trade working capital and higher pension contributions. In 
2011, we contributed $1.1 billion to our pension plans, of which $1.0 billion was voluntarily pre-funded, as 
compared with $789 million in 2010, of which $728 million was voluntarily pre-funded. 

SEGMENT OPERATING RESULTS

Basis of Presentation
We are aligned in four reportable segments: Aerospace Systems, Electronic Systems, Information Systems and 
Technical Services. This section discusses sales, segment operating income and operating margin rates by segment. 
The reconciliation of segment sales to total sales is provided in Note 4 to the consolidated financial statements in 
Part II, Item 8, with the difference being intersegment sales eliminations. The reconciliation of segment operating 
income to total operating income, as well as a discussion of the reconciling items, is included in the Consolidated 
Operating Results section above. For purposes of the discussion in this Segment Operating Results section, 
references to operating income and operating income margin rate reflect segment operating income and segment 
operating margin rate.

On January 1, 2012, we transferred our missile business (primarily the Intercontinental Ballistic Missile (ICBM) 
program) from the Aerospace Systems segment to our Technical Services segment. The segment sales and segment 
operating income for the years ended December 31, 2011 and 2010, have been recast to reflect the missile business 
transfer. Sales of $494 million and $474 million, and segment operating income of $44 million and $43 million, 
were transferred from Aerospace Systems to Technical Services for the years ended December 31, 2011 and 2010, 
respectively.

For a more complete description of each segment’s products and services, see the business descriptions in Part I, 
Item 1.

AEROSPACE SYSTEMS

$ in millions
Sales
Operating income
Operating margin rate

Year Ended December 31
2011
$9,964
1,217

2010
$10,436
1,213

2012
$9,977
1,218

12.2%

12.2%

11.6%

2012 - Aerospace Systems sales for 2012 were comparable to the prior year. Sales of unmanned systems increased 
approximately $280 million, primarily related to ramping up on the NATO Alliance Ground Surveillance (AGS) and 
Fire Scout programs. Additionally, there was higher volume of approximately $200 million on the F-35 program due 
to deliveries on LRIP 5, the first F-35 contract accounted for under the units-of-delivery method. These increases 
were offset by the termination of a weather satellite program, which reduced sales by approximately $175 million, as 
well as lower sales on the Joint Surveillance Target Attack Radar System (JSTARS), F/A-18 and certain restricted 
space programs.   

Operating income and margin rate for 2012 were comparable to the prior year. The operating income and margin 
rate reflect approximately $90 million lower operating income from the F/A-18 program's lower volume and 
transition from the multi-year 2 contract to the lower margin multi-year 3 contract, principally offset by performance 
improvements in space systems and higher margin rates and volume on sales of unmanned systems. 

2011 - Aerospace Systems sales for 2011 decreased $472 million, or 5 percent, as compared with 2010. The decrease 
was primarily due to approximately $430 million lower sales in space systems due to reduced funding for weather 
satellite programs and the James Webb Space Telescope (JWST), as well as lower volume for several other space 
programs. Military aircraft systems declined approximately $130 million primarily due to lower volume on the F-35 
program, which transitioned to a units-of-delivery revenue recognition method beginning with low rate initial 
production lot 5, the completion of the aerial targets program and lower volume on EA-18G Growler, offset by 
higher volume on Long Endurance Multi-Intelligence Vehicle (LEMV) and JSTARS. These decreases were partially 
offset by higher sales at advanced concepts and technology, primarily due to increased volume on restricted 
programs.

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Operating income for 2011 was comparable with the prior year, and operating margin rate increased to 12.2 percent 
from 11.6 percent. The increase is primarily due to improved performance across several programs at Aerospace 
Systems and lower amortization expense on purchased intangibles, partially offset by an unfavorable adjustment for 
performance incentives on a space program and overall lower sales volume discussed above.

ELECTRONIC SYSTEMS

$ in millions
Sales
Operating income
Operating margin rate

Year Ended December 31
2011
$7,372
1,070

2010
$7,613
1,023

2012
$6,950
1,187

17.1%

14.5%

13.4%

2012 - Electronic Systems sales for 2012 decreased $422 million, or 6 percent, as compared with 2011. The decrease 
was largely due to lower volume of approximately $160 million on infrared countermeasures sales and 
approximately $250 million lower postal automation sales, including approximately $150 million from our decision 
to de-emphasize our domestic postal automation business. These declines, as well as declines due to troop draw 
down and reduced overseas contingency operations funding, were partially offset by approximately $190 million 
higher volume on space programs. 

Operating income for 2012 increased $117 million, or 11 percent, and operating margin rate increased to 17.1 
percent from 14.5 percent. The higher operating income and operating margin rate reflect approximately $160 
million of additional performance improvements over 2011, primarily on several combat avionics programs. These 
performance improvements include the effect of unfavorable adjustments of approximately $50 million on a 
domestic postal automation program in the prior year that did not recur in 2012.  

2011 - Electronic Systems sales for 2011 decreased $241 million, or 3 percent, as compared with 2010. The decrease 
was primarily due to fewer deliveries on the Large Aircraft Infrared Countermeasures and Vehicular 
Intercommunications Systems (VIS) programs, offset by increased volume on restricted programs. 

Operating income for 2011 increased $47 million, or 5 percent, and operating margin rate increased to 14.5 percent 
from 13.4 percent. The higher operating income is primarily due to performance improvements on several contracts 
nearing completion in Land & Self Protection Systems and Intelligence, Surveillance & Reconnaissance programs. 
The improved program performance was partially offset by reserves established in 2011 for reductions in workforce 
and a reserve on a program related to outstanding contractual issues as the contract nears completion and the overall 
lower sales volume described above.  

INFORMATION SYSTEMS

$ in millions
Sales
Operating income
Operating margin rate

Year Ended December 31
2011
$7,921
766
9.7%

2012
$7,356
761
10.3%

2010
$8,395
756
9.0%

2012 - Information Systems sales for 2012 decreased $565 million, or 7 percent, as compared with 2011, with no 
single program driving a significant portion. The decline in sales reflects the termination or wind-down on a number 
of programs, including the Joint Tactical Radio Systems Airborne, Maritime and Fixed (JTRS AMF), Installation 
Kits (I-KITS), Enterprise Network Management (ENM) and F-22 programs, partially offset by higher volume of 
approximately $110 million on the Encore II Information Technology support program, as well as higher volume on 
the Air and Space Operations Center, Enterprise System Development, and Ground Combat Vehicle programs. 
Further reducing sales was lower volume on restricted programs, as well as the sale of the County of San Diego IT 
outsourcing contract and the sale of Park Air Norway, which together reduced sales by approximately $100 million, 
as compared to 2011. 

Operating income for 2012 decreased $5 million, or 1 percent, and operating margin rate increased to 10.3 percent 
from 9.7 percent. The higher operating margin rate is primarily driven by performance improvements across a 
number of contracts, which largely offset the impact of lower volume on operating income. 

2011 - Information Systems sales for 2011 decreased $474 million, or 6 percent, as compared with 2010. The largest 
driver was lower sales for defense programs of $327 million, principally attributed to reduced volume on Force 

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Protection Security System, Saudi Arabian American Oil Company, Netcents DKO, F-22 and several other 
programs, partially offset by higher volume on Encore II and Trailer Mounted Support System programs. The lower 
civil sales volume is primarily due to the sale of the County of San Diego contract, which reduced sales by $70 
million as compared to the same period in 2010, lower volume on the ENM program and completion of the Treasury 
Communications System program in 2010.

Operating income for 2011 increased $10 million, or 1 percent, and operating margin rate increased to 9.7 percent 
from 9.0 percent. The increase is primarily driven by improved performance on several civil programs, including the 
Virginia Information Technologies Agency Outsource contract and the effect of the sale of the County of San Diego 
contract, partially offset by the lower sales volume in defense programs described above.

TECHNICAL SERVICES

$ in millions
Sales
Operating income
Operating margin rate

Year Ended December 31
2011
$3,193
260
8.1%

2012
$3,019
268
8.9%

2010
$3,705
249
6.7%

2012 - Technical Services sales for 2012 decreased $174 million, or 5 percent, as compared with 2011. The decrease 
was primarily due to reduced volume from portfolio shaping of approximately $70 million as we focus our 
operations into core areas, lower KC-10 logistics activity of approximately $60 million and lower ICBM logistics 
and modernization activity of approximately $50 million.

Operating income for 2012 increased $8 million, or 3 percent, and operating margin rate increased to 8.9 percent 
from 8.1 percent. The higher operating income and operating margin rate were primarily due to improved 
performance on the KC-10 program, partially offset by lower sales volume as described above.

2011 - Technical Services sales for 2011 decreased $512 million, or 14 percent, as compared with 2010. The 
decrease is primarily due to $606 million lower sales in defense and government systems, primarily due to the 
reduced participation in the NSTec joint venture. Effective January 1, 2011, the company reduced its participation in 
this joint venture and deconsolidated it, resulting in no sales recorded for the joint venture for 2011, compared with 
sales of $579 million in 2010. The decrease was partially offset by increased activity on the KC-10 program, which 
began in February 2010.

Operating income for 2011 increased $11 million, or 4 percent, and operating margin rate increased to 8.1 percent 
from 6.7 percent. The increase in operating margin rate is primarily due to effects of the change in participation in 
the NSTec joint venture and performance improvements on several logistics and modernization and defense 
programs, partially offset by unfavorable program performance on KC-10.

PRODUCT AND SERVICE ANALYSIS

$ in millions
Product sales
Product costs(1)

% of product sales

Service sales
Service costs(1)

% of service sales

Year Ended December 31

2012

2011

2010

$13,838

$15,073

$16,091

10,415

11,491

12,558

75.3%

76.2%

78.0%

11,380

9,223

81.0%

11,339

9,295
82.0%

12,052

10,291

85.4%

(1) 

Product and service costs do not include an allocation of general and administrative expenses.

2012 - Product costs as a percentage of product sales decreased 90 basis points for the year ended December 31, 
2012, compared to 2011. This improvement reflects higher margins on combat avionics at Electronic Systems. 

Service costs as a percentage of service sales decreased 100 basis points for the year ended December 31, 2012, 
compared to 2011. This improvement reflects higher service margins in all four business segments. The 

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improvement is principally driven by higher margins on certain military aircraft programs at Aerospace Systems and 
an increase in favorable performance adjustments across a number of programs at Electronic Systems.  

2011 - Product costs as a percentage of product sales decreased 180 basis points for the year ended December 31, 
2011, compared to 2010. The decrease reflects performance improvements in various programs at Aerospace 
Systems and Electronic Systems, and lower amortization expense on purchased intangibles at Aerospace Systems.  

Service costs as a percentage of service sales decreased 340 basis points for the year ended December 31, 2011, 
compared to 2010. The decrease reflects performance improvements in various programs at Information Systems 
and Technical Services, the effect of the sale of the County of San Diego contract at Information Systems, and the 
change in participation in the NSTec joint venture at Technical Services.

The following table presents sales and operating costs and expenses by segment between product and service: 

$ in millions

2012

Year Ended December 31
2011

2010

Segment Information:
Aerospace Systems

Product
Services

Electronic Systems

Product
Services

Information Systems

Product
Services

Technical Services

Product
Services
Segment Totals
Total Product
Total Services

Intersegment eliminations
Total Segment(1)

Operating 
Costs and 
Expenses

Sales

Operating 
Costs and 
Expenses

Operating 
Costs and 
Expenses

Sales

Sales

   $ 8,729
1,248

    $ 7,704
1,055

   $ 8,701
1,263

    $ 7,622
1,125

   $ 9,324
1,112

    $ 8,262
961

5,346
1,604

708
6,648

213
2,806

4,438
1,325

606
5,989

196
2,555

6,041
1,331

486
7,435

501
2,692

5,161
1,141

430
6,725

456
2,477

6,410
1,203

535
7,860

475
3,230

5,479
1,111

476
7,163

433
3,023

   $14,996
12,306
(2,084)

    $ 12,944
10,924
(1,826)

   $15,729
12,721
(2,038)

   $ 13,669
11,468
(1,780)

   $16,744
13,405
(2,006)

    $ 14,650
12,258
(1,775)

   $25,218

    $ 22,042

   $26,412

    $ 23,357

   $28,143

    $ 25,133

(1)  The reconciliation of segment operating income to total operating income, as well as a discussion of the 
reconciling items, is included in the Consolidated Operating Results — Operating Income section above. 

Product Sales and Product Costs
2012 - Product sales in 2012 decreased by $733 million, compared to 2011, primarily due to lower product sales at 
Electronic Systems and Technical Services, partially offset by higher product sales at Information Systems. The 
decrease at Electronic Systems primarily relates to lower volume of approximately $90 million in combat avionics 
and approximately $250 million in domestic and international postal automation programs. The decline at Technical 
Services was due to the change in classification of the ICBM program from product to service at the beginning of 
2012, as the program transitioned from modernization to predominantly sustainment services. The increase at 
Information Systems was primarily driven by higher intercompany volume. 

Product costs in 2012 decreased by $725 million, compared to 2011, primarily due to lower sales volume and 
increased performance improvement adjustments at Electronic Systems and the change in classification of the ICBM 
program at Technical Services, offset by higher product volume at Information Systems, as described above. 

2011 - Product sales in 2011 decreased $1.0 billion, compared to 2010, primarily due to lower sales volume on space 
and military aircraft programs at Aerospace Systems and lower sales volume in Land and Self Protection Systems at 
Electronic Systems.

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Product costs in 2011 decreased by $981 million, compared to 2010, due to the decline in sales volume.  
Specifically, Aerospace Systems sales decreased by approximately $600 million due to declines in space and 
military aircraft programs, partially offset by sales increases in advanced concepts and technology.

Service Sales and Service Costs
2012 - Service sales in 2012 decreased $415 million, compared to 2011, primarily due to lower service sales at 
Information Systems across a number of programs, partially offset by the transitioning of the ICBM program from 
product to service at Technical Services and higher service volume at Electronic Systems.

Service costs in 2012 decreased $544 million, due to lower sales at Information Systems, partially offset by the 
transitioning of the ICBM program from product to service at Technical Services, as described above, and higher 
service volume at Electronic Systems. The service activities at Aerospace Systems and Electronic Systems were at 
higher margin than the prior year, resulting in service costs decreasing more than service sales. 

2011 - Service sales in 2011 decreased $684 million, compared to 2010, primarily due to the reduced participation 
by Technical Services in the NSTec joint venture, resulting in no sales recorded for the joint venture in 2011, 
compared to $579 million in 2010, and lower sales volume on defense and civil programs at Information Systems.

Service costs in 2011 decreased $790 million, due to the overall decline in sales for the period and margin rate 
improvements at Information Systems, Technical Services and Electronic Systems, offset somewhat by an 
unfavorable margin rate change at Aerospace Systems. Contributing to the overall decline in revenues was the 
company's reduced participation in the NSTec joint venture, which resulted in the deconsolidation of this business in 
2011. NSTec contributed revenues of $579 million and segment cost of sales of $559 million in 2010 when it was 
included in Technical Service's sales, thus driving a 80 basis point improvement in margin rate for this segment. 
More modest margin rate improvements at Electronic Systems and Information Systems effectively offset the 
decline in margin rate at the Aerospace Systems business.

BACKLOG

Total backlog includes both funded backlog (firm orders for which funding is contractually obligated by the 
customer) and unfunded backlog. Unexercised contract options and indefinite delivery indefinite quantity (IDIQ) 
contracts are not included in backlog until the time the option or IDIQ task order is exercised or awarded. For multi-
year service contracts with non-U.S. Government customers having no stated contract values, backlog includes only 
the amounts committed by the customer. Backlog is converted into sales as costs are incurred or deliveries are made.

On January 1, 2012, the company transferred its missile business, previously reported in Aerospace Systems to 
Technical Services. As a result of this realignment, $599 million of backlog was transferred from Aerospace Systems 
to Technical Services. Total backlog as of December 31, 2011, reflects this transfer. 

Backlog consisted of the following at December 31, 2012 and 2011:

$ in millions
Aerospace Systems
Electronic Systems
Information Systems
Technical Services
Total backlog

2012

Unfunded
$  8,491
1,638
4,496
484
$15,109

Funded
  $11,103
7,833
4,045
2,719
$25,700

Total
Backlog
$19,594
9,471
8,541
3,203
$40,809

2011
Total
Backlog
$18,638
9,123
8,563
3,191
$39,515

Approximately $21.4 billion of the $40.8 billion total backlog at December 31, 2012, is expected to be converted 
into sales in 2013. Total U.S. Government orders, including those made on behalf of foreign governments, 
comprised 82 percent of the total backlog at the end of 2012. International orders accounted for 12 percent of the 
total backlog at the end of 2012. Domestic commercial backlog represented 6 percent of total backlog at the end of 
2012.

New Awards
2012 –The estimated value of contract awards booked during 2012 is $26.5 billion. Significant new awards during 
2012 include $1.7 billion for the NATO AGS Unmanned System program, $1.4 billion for the JWST program, $1.3 
billion for the F-35 program, $1.2 billion for the E-2D Advanced Hawkeye program, $1.0 billion for international air 
defense programs and $689 million for the Global Hawk program.  

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2011 -The estimated value of contract awards added to backlog during the year ended December 31, 2011, is $25.3 
billion. Significant new awards in 2011 included $2.0 billion for the F/A-18 program, $1.1 billion for the E-2D 
Advanced Hawkeye program, $1.0 billion for the Global Hawk program, $1.1 billion for the B-2 program, $886 
million for the F-35 program and $404 million for the KC-10 program.

LIQUIDITY AND CAPITAL RESOURCES

We endeavor to ensure the most efficient conversion of operating earnings into cash for deployment in our business 
and to maximize shareholder value. In addition to our cash position, we use various financial measures to assist in 
capital deployment decision-making, including, but not limited to, net cash provided by operations, free cash flow, 
net debt-to-equity and debt-to-capital. We believe these measures are useful to investors in assessing our financial 
performance and condition.

Cash balances and cash generated from continuing operations, supplemented by borrowings under credit facilities 
and/or in the capital markets, if needed, is expected to be sufficient to fund our operations for at least the next 12 
months. As of December 31, 2012, the amount of cash, cash equivalents, and marketable securities held outside of 
the U.S. by foreign subsidiaries was $580 million. We do not anticipate repatriating these balances to fund domestic 
operations. Capital expenditure commitments at December 31, 2012, of approximately $258 million are expected to 
be paid with cash on hand.

The table below summarizes key components of cash flow provided by operating activities from continuing 
operations:

$ in millions
Net earnings
Net earnings from discontinued operations
Charge on debt redemption
Non-cash items(1)
Retiree benefit funding in excess of expense
Trade working capital change
Cash provided by continuing operations

Year Ended December 31
2011
$2,118
(32)
—
1,108
(904)
57
$2,347

2012
$1,978
—
—
726
(71)
7
$2,640

2010
$2,053
(134)
229
748
(354)
(486)
$2,056

(1)  Includes depreciation and amortization, stock based compensation expense and deferred income taxes.

Free Cash Flow from Continuing Operations
Free cash flow from continuing operations is defined as cash provided by operating activities from continuing 
operations less capital expenditures. We believe free cash flow from continuing operations is a useful measure for 
investors to consider as it represents the cash flow the company has available after capital spending to invest for 
future growth, strengthen the balance sheet and/or return to shareholders through dividends and share repurchases. 
Free cash flow is a key factor in our planning for and consideration of strategic acquisitions, the payment of 
dividends and stock repurchases. 

Free cash flow from continuing operations is not a measure of financial performance under GAAP, and may not be 
defined and calculated by other companies in the same manner. This measure should not be considered in isolation, 
as a measure of residual cash flow available for discretionary purposes, or as an alternative to operating results 
presented in accordance with GAAP as indicators of performance.

The table below reconciles cash provided by continuing operations to free cash flow from continuing operations:

$ in millions
Cash provided by continuing operations

Less: Capital expenditures

Free cash flow provided by continuing operations

Year Ended December 31
2011
$2,347
(492)
$1,855

2012
$2,640
(331)
$2,309

2010
$2,056
(585)
$1,471

Cash Flows
The following is a discussion of our major operating, investing and financing activities from continuing operations 
for each of the three years in the period ended December 31, 2012, as classified on the consolidated statements of 
cash flows in Part II, Item 8.

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Operating Activities
2012 – Cash provided by continuing operations in 2012 increased $293 million, as compared to 2011, primarily due 
to lower pension contributions, partially offset by higher income taxes paid. In 2012, we contributed $367 million to 
our pension plans, of which $300 million was voluntarily pre-funded, as compared with $1.1 billion in 2011, of 
which $1.0 billion was voluntarily pre-funded. 

2011 – Cash provided by continuing operations in 2011 increased $291 million, as compared to 2010, primarily due 
to lower tax payments and changes in trade working capital, partially offset by higher pension plan contributions. In 
2011, pension plan contributions totaled $1.1 billion, of which $1 billion was voluntarily pre-funded. In 2010, 
pension plan contributions totaled $789 million, of which $728 million was voluntarily pre-funded. 

Investing Activities
2012 – Cash used in investing activities from continuing operations in 2012 decreased $827 million, as compared to 
the cash provided by investing activities in 2011, reflecting a $1.4 billion contribution received from the spin-off of 
Shipbuilding business in 2011, partially offset by $250 million in proceeds from the maturity of short-term 
investments in 2012 that were purchased in 2011. 

2011 – Cash provided by investing activities from continuing operations increased $1.3 billion as compared to 2010, 
reflecting a $1.4 billion contribution received from the spin-off of Shipbuilding business, partially offset by $250 
million net purchases of a short-term investment in 2011. 

Financing Activities
2012 – Net cash used in financing activities from continuing operations in 2012 decreased $1.8 billion, as compared 
to 2011, reflecting approximately $980 million lower repurchases of common stock and $768 of debt repayments in 
2011 that did not recur in 2012.

2011 – Net cash used in financing activities from continuing operations in 2011 increased $2.4 billion, as compared 
to 2010, reflecting approximately $1.1 billion higher repurchases of common stock and $1.5 billion of debt proceeds 
in 2010. 

Credit Facilities
In September 2011, the company entered into two senior unsecured credit facilities (the Credit Agreements) in an 
aggregate principal amount of $2 billion. The first Credit Agreement is for $1.5 billion with a maturity date of 
September 2016. The second Credit Agreement was a 364-day revolving credit facility in an aggregate principal 
amount of $500 million. In September 2012, the company entered into a new 364-day revolving credit facility in an 
aggregate principal amount of $500 million, replacing the previous $500 million 364-day revolving credit facility.

The Credit Agreements contain covenants which restrict the company’s ability to sell all or substantially all of its 
assets, merge or consolidate with another entity or undertake other fundamental changes and incur liens. The 
company also cannot permit the ratio of its consolidated debt to capitalization (as set forth in the Credit Agreements) 
to exceed 65 percent. The company is in compliance with all covenants under the Credit Agreements. At 
December 31, 2012, there was no balance outstanding under either of these credit facilities.

Other Sources and Uses of Capital
Additional Capital – We believe we can obtain additional capital, if necessary for long-term liquidity, from such 
sources as the public or private capital markets, the sale of assets, sale and leaseback of operating assets, and leasing 
rather than purchasing new assets. We have an effective shelf registration statement on file with the SEC, which 
allows us to access capital in a timely manner.

Financial Arrangements – In the ordinary course of business, the company uses standby letters of credit and 
guarantees issued by commercial banks and surety bonds issued principally by insurance companies to guarantee the 
performance on certain obligations. At December 31, 2012, there were $193 million of stand-by letters of credit, 
$295 million of bank guarantees, and $168 million of surety bonds outstanding.

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Contractual Obligations
The following table presents our contractual obligations as of December 31, 2012, and the estimated timing of future 
cash payments:

2016 -
2017

$ in millions
Long-term debt
Interest payments on long-term debt
Operating leases
Purchase obligations(1)
Other long-term liabilities(2)
Total contractual obligations

2018 and
beyond
$2,951
1,521
129
179
448
$5,228  
(1)  A “purchase obligation” is defined as an agreement to purchase goods or services that is enforceable and legally 
binding on us and that specifies all significant terms, including: fixed or minimum quantities to be purchased; 
fixed, minimum, or variable price provisions; and the approximate timing of the transaction. These amounts are 
primarily comprised of open purchase order commitments to vendors and subcontractors pertaining to funded 
contracts.

2014 -
2015
$   855
401
435
2,364
242
$4,297

Total
$  3,924
2,485
1,071
6,907
878
$15,265

2013
$       5
207
274
4,187
88
$4,761

$113
356
233
177
100
$979

(2)  Other long-term liabilities primarily consist of total accrued environmental reserves, deferred compensation, 

and other miscellaneous liabilities, of which $88 million is related to environmental reserves recorded in other 
current liabilities. It excludes obligations for uncertain tax positions of $175 million, as the timing of such 
payments, if any, cannot be reasonably estimated.

Further details regarding long-term debt and operating leases can be found in Notes 10 and 12, respectively, to the 
consolidated financial statements in Part II, Item 8.

CRITICAL ACCOUNTING POLICIES, ESTIMATES, AND JUDGMENTS

Revenue Recognition
Overview – We derive the majority of our business from long-term contracts for development, production and 
support activities for the U.S. Government. These contracts are accounted for in conformity with GAAP for 
construction-type and production-type contracts and federal government contractors, generally using the percentage-
of-completion method accounting. We classify contract revenues as product or service depending on the 
predominant attributes of the contract. We consider the nature of these contracts and the types of products and 
services provided when determining the proper accounting method for a particular contract.

Percentage-of-Completion Accounting – The use of the percentage-of-completion method requires us to make 
reasonably dependable estimates for the design, manufacture, and delivery of our products and services. We 
generally recognize revenues from our long-term contracts under the cost-to-cost or the units-of-delivery measures 
of the percentage-of-completion method of accounting. The percentage-of-completion method recognizes revenue as 
work on a contract progresses. Most of our contracts use the cost-to-cost method, where revenue is calculated based 
on the percentage of total costs incurred in relation to total estimated costs at completion of the contract. The units-
of-delivery measure recognizes revenues as deliveries are made to the customer, generally using unit sales values. 
Under both of these methods of percentage-of-completion accounting, we estimate profit as the difference between 
total estimated revenue and total estimated cost of a contract at completion, and recognize that profit as costs are 
incurred or as units are delivered. 

Certain contracts contain provisions for price redetermination or for cost and/or performance incentives. These 
amounts are included in sales when they are reasonably estimable. Amounts representing un-priced change orders, 
claims, requests for equitable adjustment, or recovery of costs in excess of limitations in funding are included in 
estimated contract revenue only when they are reliably estimable and realization is probable. Changes in estimates 
of contract revenues, costs, or profits are recognized using the cumulative catch-up method of accounting. This 
method recognizes, in the current period, the cumulative effect of the changes on current and prior periods. Revenue 
and profit on future periods of contract performance are recognized as if the revised estimate had been used since 
contract inception. If it is determined that a loss will result from the performance of a contract, the entire amount of 
the estimable future loss is charged against income in the period the loss is identified. Loss provisions are first offset 
against costs that are included in unbilled accounts receivable or inventoried costs, and any remaining amount is 
reflected in liabilities.

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Changes in contract estimates occur for a variety of reasons, including changes in contract scope, changes in 
estimated revenue, and changes in contract cost estimates. These changes are often driven by events such as changes 
in estimated incentive fees, unanticipated risks affecting contract costs, the resolution of risk at lower or higher cost 
than anticipated, and changes in indirect cost allocations, such as overhead and general and administrative expenses. 
We employ an extensive contract management process involving several functional organizations and numerous 
personnel who are skilled at managing contract activities. Changes in estimates are frequent; the company performs 
on a broad portfolio of long-term contracts, many of which include complex and customized aerospace and 
electronic equipment and software, that often includes technology at the forefront of science. Significant changes in 
estimates on a single contract could have a material effect on the company's consolidated financial position or 
annual results of operations, and where such changes occur, separate disclosure is made of the nature, underlying 
conditions and financial impact of the change. For the impacts of changes in estimates on our consolidated statement 
of earnings, see the Consolidating Operating Results section above and Note 1 to the consolidated financial 
statements in Part II, Item 8.

Cost Estimation – The cost estimation process is based on the professional knowledge of our engineers, program 
managers and financial professionals, and draws on their significant experience and judgment. Such costs are 
typically incurred over a period of several years, and estimation of these costs requires the use of judgment. Factors 
that are considered in estimating the cost of the work to be completed include the availability, productivity and cost 
of labor, the nature and complexity of the work to be performed, the effect of change orders, the availability and cost 
of materials, the effect of any delays in performance, and the level of indirect cost allocations. We update our 
contract estimates at least annually and more frequently as determined by the occurrence of events or changes in 
circumstances. We generally review and reassess our cost and revenue estimates for each significant contract on a 
quarterly basis.

Goodwill
Overview – We allocate the purchase price of acquired businesses to the underlying tangible and intangible assets 
acquired and liabilities assumed based upon their respective fair values, with the excess recorded as goodwill. Such 
fair value assessments require judgments and estimates that can be affected by contract performance and other 
factors over time, which may cause final amounts to differ materially from original estimates. Adjustments to the 
fair value of purchased assets and liabilities after the initial measurement period are recognized in net earnings. 

Impairment Testing – We perform an annual impairment test of our goodwill as of November 30th, or between 
annual tests if events occur or circumstances change that suggest goodwill should be evaluated. When testing 
goodwill, we compare the fair value of each of our four reporting units to their carrying values. 

To determine the fair value of our reporting units, we primarily use the income approach based on the cash flows 
that the reporting unit expects to generate in the future, consistent with our operating plans. This income valuation 
method requires management to project revenues, operating expenses, working capital, capital spending and cash 
flows for the reporting units over a multi-year period, as well as determine the weighted-average cost of capital 
(WACC) used as a discount rate and terminal value assumptions.

The WACC takes into account the relative weights of each component of our consolidated capital structure (equity 
and debt) and represents the expected cost of new capital adjusted as appropriate to consider lower risk profiles 
associated with longer-term contracts and barriers to market entry. The terminal value assumptions are applied to the 
final year of the discounted cash flow model. Impairment assessment inherently involves management judgments as 
to assumptions about expected future cash flows and the impact of market conditions on those assumptions. Due to 
the many variables inherent in the estimation of a business’s fair value and the relative size of our recorded 
goodwill, differences in assumptions may have a material effect on the results of our impairment analysis.

We also corroborate the fair values determined under the income approach using the market valuation method to 
estimate the fair value of our reporting units, by utilizing industry multiples (including relevant control premiums) of 
operating earnings. If the carrying value exceeds the fair value, we determine the fair value of the reporting unit’s 
individual assets and liabilities and calculate the implied fair value of goodwill.

The results of our annual goodwill impairment test as of November 30, 2012, indicated that the estimated fair value 
of our reporting units exceed their carrying value. There were no impairment charges recorded in the years ended 
December 31, 2012, 2011 and 2010.  

Fair values for three of our four reporting units substantially exceeded their respective carrying values as of our 
annual impairment testing on November 30, 2012. At our other reporting unit, Information Systems, fair value 
exceeds carrying value by approximately five percent. Information Systems carrying value includes goodwill of $5.3 

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NORTHROP GRUMMAN CORPORATION 

billion as of December 31, 2012. We face continued uncertainty in our business environment due to the substantial 
fiscal and economic challenges facing the U.S. Government, our primary customer. Unresolved issues arising from 
these challenges include potential sequestration and action on the national debt ceiling. Potential contract 
cancellations or terminations may arise from resolution of these issues and could cause our revenues, profits and 
cash flows to be lower than our current projections. In addition, market-based inputs to the calculations in the 
impairment test, such as weighted average cost of capital and terminal value (based on market comparisons) could 
also be negatively impacted. Such circumstances may result in an impairment of our goodwill. Further, the carrying 
values of our reporting units are significantly influenced by a number of factors including the discount rate used to 
determine our net pension liability. Therefore, an increase in the discount rate on our pension liability in 2013 or 
beyond could result in an impairment of goodwill absent any changes discussed above.  

Retirement Benefits
Overview – For financial statement purposes, we account for our employee pension and other post-retirement plans 
in accordance with GAAP under FAS. We charge the costs of these plans to our contracts with customers in 
accordance with the FAR and the related CAS that govern such plans. In measuring periodic pension cost, both FAS 
and CAS recognize a normal service cost component, but there are differences in the way the remaining components 
of annual pension costs are calculated under each method, including the assumptions and methods used for 
measuring the plan obligations. As a result, retiree benefit plan expense amounts for FAS are different from the 
amounts for CAS. Further, differences result from dissimilar methodologies as to how estimated earnings on pension 
assets and interest expense on the pension obligations are measured, and the periods over which gains/losses related 
to pension assets and actuarial changes are amortized. CAS pension expense is charged to contracts and included in 
segment operating income, and the difference between the CAS and FAS pension expense is recorded in operating 
income at the consolidated company level.

For FAS purposes, we perform an annual review of the assumptions used in determining projected benefit 
obligations and the fair values of plan assets for our pension plans and other post-retirement benefit plans in 
consultation with our outside actuaries. In the event that we determine changes in the assumptions are warranted, or 
as a result of plan amendments, future FAS pension and post-retirement benefit expense could increase or decrease. 
The principal assumptions that have a significant effect on our consolidated financial position and results of 
operations are the discount rate, the expected long-term rate of return on plan assets, the health care cost trend rate 
and the estimated fair market value of plan assets. 

Discount Rate – The discount rate represents the interest rate that is used to determine the present value of future 
cash flows currently expected to be required to settle the pension and other post-retirement benefit obligations. The 
discount rate is generally based on the yield of high-quality corporate fixed-income investments. At the end of each 
year, the discount rate is determined using a portfolio of high quality bonds matching the notional cash outflows 
related to benefit payments for each significant benefit plan. Taking into consideration the factors noted above, our 
weighted-average pension composite discount rate was 4.12 percent at December 31, 2012, and 5.03 percent at 
December 31, 2011. 

The effects of hypothetical changes in the discount rate for a single year may not be representative and may be 
asymmetrical or nonlinear for future years because of the application of the accounting corridor. The accounting 
corridor is a defined range within which amortization of net gains and losses is not required. Holding all other 
assumptions constant, and since net actuarial gains and losses were in excess of the 10 percent accounting corridor 
in 2012, an increase or decrease of 25 basis points in the discount rate assumption for 2012 would have the 
following estimated effect to:

$ increase/(decrease) in millions

Pension expense

Post-retirement benefit expense

Pension obligation
Post-retirement benefit obligation

25 Basis Point 
Decrease in 
Discount Rate
$  78

3

950

70

25 Basis Point 
Increase in 
Discount Rate
($   78)
(3)
(910)
(65)

Expected Long-Term Rate of Return – The expected long-term rate of return on plan assets represents the average 
rate of earnings expected on funds invested. For 2012 and 2011, we assumed an expected long-term rate of return on 
plan assets of 8.25 percent and 8.5 percent, respectively. For 2013 pension and post-retirement benefit plan 
purposes, we have assumed an expected long-term rate of return on plan assets of 8.0 percent and 7.33 percent, 

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NORTHROP GRUMMAN CORPORATION 

respectively. Holding all other assumptions constant, an increase or decrease of 25 basis points in the expected long-
term rate of return assumption for 2012 would have the following estimated effect to: 

$ in millions

Pension expense

Post-retirement benefit expense

25 Basis Point 
Decrease

25 Basis Point 
Increase

$52

2

($52)
(2)

Health Care Cost Trend Rate – The health care cost trend rate represents the annual rate of change in the cost of 
health care benefits based on external estimates of health care inflation, changes in health care utilization or delivery 
patterns, technological advances, and changes in the health status of the plan participants. For the years ended 
December 31, 2012 and December 31, 2011, we used a combination of market expectations and economic 
projections, including the effect of health care reform, to select an expected initial health care cost trend rate of 7 
percent for 2013 and 7.5 percent for 2012, respectively. Additionally, we expect an ultimate health care cost trend 
rate of 5 percent to be reached in 2017 for both 2012 and 2011. Although our actual cost experience is much lower at 
this time, market conditions and the potential effects of health care reform are expected to increase medical cost 
trends in the next one to three years, thus our past experience may not reflect future conditions.

A one percentage-point change in the initial through the ultimate health care cost trend rates within the range would 
have had the following estimated effect on 2012 post-retirement benefit results: 

$ in millions

Post-retirement benefit expense
Post-retirement benefit liability

1-Percentage 
Point 
Decrease

1-Percentage 
Point 
Increase 

($ 6)
(88)

 $ 5
73

Estimated Fair Market Value of Plan Assets – For certain plan assets where the fair market value is not readily 
determinable, such as real estate, private equity and hedge funds, estimates of fair value are determined using the 
best information available.

Litigation, Commitments, and Contingencies
We are subject to a range of claims, investigations, lawsuits, environmental matters, income tax matters, and 
administrative proceedings that arise in the ordinary course of business. Estimating liabilities and costs associated 
with these matters requires judgment based upon the professional knowledge and experience of management and 
counsel. We determine whether to record a charge to earnings and, if so, what amount based on consideration of the 
facts and circumstances of each matter as then known to us, including any settlement offers, and our assessment of 
the probability of the liabilities and whether the amount of the loss can be reasonably estimated. When we believe, 
based on the facts available to us, that a liability is probable and the loss is reasonably estimable, we record our best 
estimate of the amount of the ultimate loss. When a range of costs is reasonably estimable, but no amount within 
that range is a better estimate than another, we record what we estimate as the lower end of the range. 
Determinations whether to record a charge and, if so, of what amount, reflect management's assessment regarding 
what is likely to occur; they do not necessarily reflect what management believes should occur. The ultimate 
resolution of any such exposure to us may vary materially from earlier estimates as further facts and circumstances 
develop or become known to us. For further information on the treatment of these contingencies, see Note 1, Note 
11 and Note 12 to the consolidated financial statements in Part II, Item 8.

Environmental Accruals - We are subject to environmental laws and regulations in the jurisdictions in which we 
conduct operations. Factors that could result in changes to the assessment of probability, range of estimated costs, 
and environmental accruals include: modification of planned remedial actions, increase or decrease in the estimated 
time required to remediate, discovery of more or less extensive contamination than anticipated, results of efforts to 
involve other responsible parties, financial capabilities of other responsible parties, changes in laws and regulations 
or contractual obligations affecting remediation requirements or other obligations, and improvements in remediation 
technology.

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NORTHROP GRUMMAN CORPORATION 

OTHER MATTERS

Accounting Standards Updates
Accounting standards updates effective after December 31, 2012, are not expected to have a material effect on the 
company's consolidated financial position or results of operations.

Business Dispositions
There were no material business dispositions in 2012 or 2010, however, in 2011 we completed the spin-off to our 
shareholders of HII effective March 31, 2011. HII operates the business that was previously the Shipbuilding 
segment (Shipbuilding) of the company prior to the spin-off. The spin-off was the culmination of the company’s 
decision to explore strategic alternatives for Shipbuilding as it was determined to be in the best interests of 
shareholders, customers, and employees to allow both the company and Shipbuilding to pursue more effectively 
their respective opportunities to maximize value. We made a pro rata distribution to our shareholders of one share of 
HII common stock for every six shares of our common stock held on the record date of March 30, 2011, or 
48.8 million shares of HII common stock. There was no gain or loss recognized by the company as a result of the 
spin-off transaction. In connection with the spin-off, HII issued senior notes and entered into a credit facility with 
third-party lenders, and HII used a portion of the proceeds of the notes and credit facility to fund a $1.4 billion cash 
contribution to us. Sales for Shipbuilding for the three months ended March 31, 2011, were $1.6 billion and sales for 
the year ended December 31, 2010, were $6.7 billion. The assets, liabilities and operating results of this business 
unit are reported as discontinued operations in the consolidated financial statements for all periods presented.

Discontinued Operations – Results of operations for Shipbuilding, and an adjustment to the gain on a previous 
divestiture, were as follows:

$ in millions
Sales
Earnings from discontinued operations
Income tax expense
Earnings, net of tax
Gain on divestiture, net of income tax expense of $1 for 2011 and a benefit of $5 for 2010

Earnings from discontinued operations, net of tax

Year Ended
December 31

2011
$ 1,646
59
(28)
31
1
32

 $

2010
$ 6,711
229
(95)
134
15
$ 149

Off-Balance Sheet Arrangements
As of December 31, 2012, we had no significant off-balance sheet arrangements other than operating leases. For a 
description of our operating leases, see Note 12 to our consolidated financial statements in Part II, Item 8.

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NORTHROP GRUMMAN CORPORATION 

Item 7A. Quantitative and Qualitative Disclosures about Market Risk

Market Risk –We are exposed to market risk with respect to our portfolio of trading and available-for-sale 
marketable securities with a fair value of $262 million at December 31, 2012.

Interest Rate Risk – We are exposed to interest rate risk with respect to our holdings of cash and cash equivalents of 
$3.9 billion at December 31, 2012, and we are also exposed to interest rate risk on variable-rate short-term credit 
facilities for which there were no borrowings outstanding at December 31, 2012. At December 31, 2012, we have 
$3.9 billion of long-term debt, primarily consisting of fixed rate debt, with a fair value of approximately $4.8 billion.

Derivatives – We do not hold or issue derivative financial instruments for trading purposes. From time to time, we 
may enter into interest rate swap agreements to manage our exposure to interest rate fluctuations. At December 31, 
2012, we have no interest rate swap agreements in effect.

Foreign Currency Risk – We are exposed to foreign currency risk with respect to our foreign operations. We enter 
into foreign currency forward contracts to manage a portion of the exchange rate risk related to receipts from 
customers and payments to suppliers denominated in foreign currencies. At December 31, 2012, foreign currency 
forward contracts with a notional amount of $144 million were outstanding.

Inflation Risk – We have generally been able to anticipate increases in costs when pricing our contracts. Bids for 
longer-term firm fixed-price contracts typically include labor and other cost escalations in amounts that historically 
have been sufficient to cover cost increases over the period of performance.

A 10 percent change in interest rates or foreign currency exchange rates would not have a material impact to our 
consolidated financial position or results of operations.

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Item 8. Financial Statements and Supplementary Data

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of
Northrop Grumman Corporation
Falls Church, Virginia

We have audited the accompanying consolidated statements of financial position of Northrop Grumman Corporation 
and subsidiaries (the “Company”) as of December 31, 2012 and 2011, and the related consolidated statements of 
earnings and comprehensive income, changes in shareholders’ equity, and cash flows for each of the three years in 
the period ended December 31, 2012. These financial statements are the responsibility of the Company’s 
management. Our responsibility is to express an opinion on the 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, such consolidated financial statements present fairly, in all material respects, the financial position of 
Northrop Grumman Corporation and subsidiaries at December 31, 2012 and 2011, and the results of their operations 
and their cash flows for each of the three years in the period ended December 31, 2012, in conformity with 
accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United 
States), the Company’s internal control over financial reporting as of December 31, 2012, based on the criteria 
established in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the 
Treadway Commission and our report dated February 4, 2013 expressed an unqualified opinion on the Company’s 
internal control over financial reporting.

/s/

Deloitte & Touche LLP
McLean, Virginia
February 4, 2013

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NORTHROP GRUMMAN CORPORATION 

CONSOLIDATED STATEMENTS OF EARNINGS AND COMPREHENSIVE INCOME

$ in millions, except per share amounts
Sales

Product
Service
Total sales
Operating costs and expenses

Product
Service
General and administrative expenses

Operating income
Other (expense) income
Interest expense
Charge on debt redemption
Other, net

Earnings from continuing operations before income taxes
Federal and foreign income tax expense
Earnings from continuing operations
Earnings from discontinued operations, net of tax
Net earnings

Basic earnings per share
Continuing operations
Discontinued operations

Basic earnings per share
Weighted-average common shares outstanding, in millions

Diluted earnings per share
Continuing operations
Discontinued operations
Diluted earnings per share
Weighted-average diluted shares outstanding, in millions

Year Ended December 31
2011

2010

2012

$13,838
11,380
25,218

$15,073
11,339
26,412

$16,091
12,052
28,143

10,415
9,223
2,450
3,130

(212)
—
47
2,965
987
1,978
—
$  1,978

$    7.96
—
$    7.96
248.6

$    7.81
—
$    7.81
253.4

11,491
9,295
2,350
3,276

(221)
—
28
3,083
997
2,086
32
$  2,118

12,558
10,291
2,467
2,827

(269)
(229)
37
2,366
462
1,904
149
$  2,053

$    7.54
0.11
$    7.65
276.8

$    6.41
0.50
$    6.91
296.9

$    7.41
0.11
$    7.52
281.6

$    6.32
0.50
$    6.82
301.1

Net earnings (from above)
Other comprehensive income

Change in cumulative translation adjustment
Change in unrealized (loss) gain on marketable securities and cash flow
hedges, net of tax benefit of $0 in 2012, $2 in 2011, and $0 in 2010
Change in unamortized benefit plan costs, net of tax benefit (expense)
of $860 in 2012, $823 in 2011, and $(183) in 2010

Other comprehensive (loss) income, net of tax
Comprehensive income

$  1,978

$  2,118

$  2,053

8

(2)

(4)

(4)

(41)

1

(1,303)
(1,297)
$     681

(1,249)
(1,257)
$     861

297
257
$  2,310

The accompanying notes are an integral part of these consolidated financial statements.

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NORTHROP GRUMMAN CORPORATION 

CONSOLIDATED STATEMENTS OF FINANCIAL POSITION 

$ in millions
Assets

Cash and cash equivalents
Accounts receivable, net of progress payments
Inventoried costs, net of progress payments
Deferred tax assets
Prepaid expenses and other current assets
Total current assets
Property, plant and equipment, net of accumulated depreciation of $4,146 in 2012 and
$3,933 in 2011
Goodwill
Non-current deferred tax assets
Other non-current assets

Total assets

Liabilities

Trade accounts payable
Accrued employee compensation
Advance payments and billings in excess of costs incurred
Other current liabilities
Total current liabilities
Long-term debt, net of current portion of $5 in 2012 and 2011
Pension and post-retirement plan liabilities
Other non-current liabilities

Total liabilities

Commitments and contingencies (Note 12)

Shareholders’ equity

Preferred Stock, $1 par value; 10,000,000 shares authorized; no shares issued and
outstanding
Common stock, $1 par value; 800,000,000 shares authorized; issued and outstanding:
2012 — 239,209,812; 2011 — 253,889,622
Paid-in capital
Retained earnings
Accumulated other comprehensive loss
Total shareholders’ equity

Total liabilities and shareholders’ equity

The accompanying notes are an integral part of these consolidated financial statements.

December 31

2012

2011

$  3,862
2,858
798
574
300
8,392

2,887
12,431
1,542
1,291
$26,543

$  1,392
1,173
1,759
1,732
6,056
3,930
6,085
958
17,029

$  3,002
2,964
873
496
411
7,746

3,047
12,374
900
1,344
$25,411

$  1,481
1,196
1,777
1,681
6,135
3,935
4,079
926
15,075

—

—

239
2,924
11,138
(4,787)
9,514
$26,543

254
3,873
9,699
(3,490)
10,336
$25,411

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NORTHROP GRUMMAN CORPORATION 

CONSOLIDATED STATEMENTS OF CASH FLOWS 

$ in millions
Operating activities

Sources of cash—continuing operations

Cash received from customers
Collections on billings
Progress payments

Other cash receipts
Total sources of cash—continuing operations

Uses of cash—continuing operations

Cash paid to suppliers and employees
Pension contributions
Interest paid, net of interest received
Income taxes paid, net of refunds received
Excess tax benefits from stock-based compensation
Other cash payments
Total uses of cash—continuing operations

Cash provided by continuing operations
Cash (used in) provided by discontinued operations
Net cash provided by operating activities

Investing activities

Continuing operations

Capital expenditures
Maturities of short-term investments
Contribution received from the spin-off of shipbuilding business
Purchases of short-term investments
Other investing activities, net

Cash (used in) provided by investing activities from continuing
operations

Cash used in investing activities from discontinued operations
Net cash (used in) provided by investing activities

Financing activities

Common stock repurchases
Cash dividends paid
Proceeds from exercises of stock options
Excess tax benefits from stock-based compensation
Payments of long-term debt
Proceeds from issuance of long-term debt
Other financing activities, net

Cash used in financing activities from continuing operations
Cash used in financing activities from discontinued operations
Net cash used in financing activities

Increase (decrease) in cash and cash equivalents
Cash and cash equivalents, beginning of year
Cash and cash equivalents, end of year

Year Ended December 31
2011

2010

2012

$ 20,892
4,472
99
25,463

$ 21,628
4,803
149
26,580

$ 23,531
4,437
40
28,008

(21,074)
(367)
(200)
(1,119)
(45)
(18)
(22,823)
2,640
—
2,640

(331)
250
—
—
(3)

(84)
—
(84)

(1,316)
(535)
188
45
—
—
(78)
(1,696)
—
(1,696)
860
3,002
$  3,862

(22,059)
(1,084)
(227)
(810)
(17)
(36)
(24,233)
2,347
(232)
2,115

(492)
200
1,429
(450)
56

743
(63)
680

(2,295)
(543)
101
17
(768)
—
(6)
(3,494)
—
(3,494)
(699)
3,701
$  3,002

(23,759)
(789)
(269)
(1,071)
(22)
(42)
(25,952)
2,056
397
2,453

(585)
—
—
(2)
16

(571)
(189)
(760)

(1,177)
(545)
142
22
(1,011)
1,484
(2)
(1,087)
(179)
(1,266)
427
3,274
$  3,701

The accompanying notes are an integral part of these consolidated financial statements.

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NORTHROP GRUMMAN CORPORATION 

$ in millions
Reconciliation of net earnings to net cash provided by operating
activities
Net earnings
Net earnings from discontinued operations
Adjustments to reconcile to net cash provided by operating activities:

Depreciation
Amortization
Stock-based compensation
Excess tax benefits from stock-based compensation
Pre-tax gain on sale of businesses
Charge on debt redemption
(Increase) decrease in assets:
Accounts receivable, net
Inventoried costs, net
Prepaid expenses and other assets

Increase (decrease) in liabilities:

Accounts payable and accruals
Deferred income taxes
Income taxes payable
Retiree benefits

Other, net
Cash provided by continuing operations
Cash (used in) provided by discontinued operations

Net cash provided by operating activities

Year Ended December 31
2011

2010

2012

$1,978
—

$2,118
(32)

$2,053
(134)

448
62
183
(45)
—
—

90
46
(65)

23
78
(75)
(71)
(12)
2,640
—
$2,640

462
82
140
(17)
—
—

350
(2)
16

(341)
441
(32)
(904)
66
2,347
(232)
$2,115

446
109
136
(22)
(10)
229

(471)
(64)
36

70
89
(26)
(354)
(31)
2,056
397
$2,453

The accompanying notes are an integral part of these consolidated financial statements.

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NORTHROP GRUMMAN CORPORATION 

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY

$ in millions, except per share amounts
Common stock

Beginning of year
Common stock repurchased
Shares issued for stock awards and options

End of year

Paid-in capital

Beginning of year
Common stock repurchased
Stock compensation and option exercises
Spin-off of shipbuilding business

End of year

Retained earnings

Beginning of year
Net earnings
Dividends declared
End of year

Accumulated other comprehensive loss

Beginning of year
Other comprehensive (loss) income, net of tax
Spin-off of shipbuilding business

End of year

Total shareholders’ equity
Cash dividends declared per share

Year Ended December 31
2011

2010

2012

$   254
(21)
6
239

3,873
(1,310)
359
2
2,924

9,699
1,978
(539)
11,138

(3,490)
(1,297)
—
(4,787)
$ 9,514
$   2.15

$   291
(40)
3
254

7,778
(2,264)
236
(1,877)
3,873

8,124
2,118
(543)
9,699

$   307
(20)
4
291

8,657
(1,143)
264

—
7,778

6,616
2,053
(545)
8,124

(2,757)
(1,257)
524
(3,490)
$10,336
$    1.97

(3,014)
257

—
(2,757)
$13,436
$    1.84

The accompanying notes are an integral part of these consolidated financial statements.

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NORTHROP GRUMMAN CORPORATION 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 

1.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Nature of Operations
Northrop Grumman Corporation (herein referred to as “Northrop Grumman,” the “company,” “we,” “us,” or “our”) 
is a leading global security company providing innovative systems, products and solutions in unmanned systems, 
cybersecurity, C4ISR, and logistics and modernization to government and commercial customers worldwide through 
four sectors: Aerospace Systems, Electronic Systems, Information Systems and Technical Services. We participate in 
many high-priority defense and government services programs in the United States (U.S.) and abroad as a prime 
contractor, principal subcontractor, partner, or preferred supplier. We conduct the majority of our business with the 
U.S. Government, principally the Department of Defense (DoD) and intelligence community. We also conduct 
business with foreign, state, and local governments, as well as domestic and international commercial customers.

Principles of Consolidation
The consolidated financial statements include the accounts of Northrop Grumman and its subsidiaries. All material 
intercompany accounts, transactions, and profits are eliminated in consolidation. Investments in equity securities and 
joint ventures where the company has significant influence, but not control, are accounted for using the equity 
method.

Accounting Estimates
The company’s financial statements are prepared in conformity with accounting principles generally accepted in the 
United States of America (GAAP). The preparation thereof requires management to make estimates and judgments 
that affect the reported amounts of assets and liabilities and the disclosure of contingencies at the date of the 
financial statements, as well as the reported amounts of revenues and expenses during the reporting period. 
Estimates have been prepared using the most current and best available information; however, actual results could 
differ materially from those estimates.

Related Party Transactions
For all periods presented, the company had no material related party transactions.

Revenue Recognition
The majority of our business results are derived from long-term contracts with the U.S. Government for the 
production of goods, the provision of services, or in some cases, a combination of both. In accounting for these 
contracts, we utilize either the cost-to-cost or the units-of-delivery method of percentage-of-completion accounting. 
Generally, sales under cost-reimbursement contracts and construction-type contracts that provide for deliveries at 
lower volume rates per year or a small number of units are accounted for using the cost-to-cost method. Under this 
method, sales, including estimated profits, are recorded as costs are incurred. Generally, sales under contracts that 
provide for deliveries at higher volume rates per year are accounted for using the units-of-delivery method. Under 
this method, sales are recognized as units are delivered to the customer. The company estimates profit on contracts 
utilizing both of these methods as the difference between total estimated revenue and total estimated cost of a 
contract at completion and recognizes that profit either as costs are incurred (cost-to-cost) or as units are delivered 
(units-of-delivery). The company classifies revenue as product or service depending upon the predominant attributes 
of the contract.

Contract revenues may include estimated amounts not contractually agreed to by the customer, including price 
redetermination, cost or performance incentives (such as award and incentive fees), un-priced change orders, claims, 
and requests for equitable adjustment.

Amounts pertaining to provisions for price redetermination or for cost and/or performance incentives are included in 
sales when they are reasonably estimable. Further, as contracts are performed, change orders can be a regular 
occurrence and may be un-priced until negotiated with the customer. Un-priced change orders are included in 
revenue when they are probable of recovery in an amount at least equal to the cost.

Amounts representing claims (including change orders unapproved as to both scope and price) and requests for 
equitable adjustment are included in estimated contract revenue only when they are reliably estimable and 
realization is probable. As of December 31, 2012, the recognized amounts related to claims and requests for 
equitable adjustment are not material individually or in the aggregate.

The company's U.S. Government contracts generally contain provisions that enable the customer to terminate a 
contract for default, or for the convenience of the government. If the contract is terminated for default, the contractor 
may not be entitled to recover any of its costs on partially completed work and may be liable to the government for 
re-procurement costs of acquiring similar products or services from another contractor, and for certain other 

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NORTHROP GRUMMAN CORPORATION 

damages. Termination of a contract for the convenience of the government may occur when the government 
concludes it is in the best interests of the government that the contract be terminated. Under a termination for 
convenience, the contractor is typically entitled to be paid in accordance with the contract’s terms for costs incurred 
prior to the effective date of termination, plus a reasonable profit and settlement expenses. The company does not 
have any contract terminations in process that would have a material effect on our consolidated financial position or 
annual results of operations at December 31, 2012.

Changes in estimates of contract sales, costs, or profits are recognized using the cumulative catch-up method of 
accounting. This method recognizes, in the current period, the cumulative effect of the changes on current and prior 
periods, and revenue and profit on future periods of contract performance are recognized as if the revised estimate 
had been used since contract inception. If it is determined that a loss will result from the performance of a contract, 
the entire amount of the estimable future loss is charged against income in the period the loss is identifiable. Loss 
provisions are first offset against costs that are included in unbilled accounts receivable or inventoried costs, and any 
remaining amount is reflected in liabilities.

Changes in contract estimates occur for a variety of reasons, including changes in contract scope, other changes in 
estimated revenue and changes in contract cost estimates. These changes are often driven by events such as changes 
in estimated incentive fees, unanticipated risks affecting contract costs, the resolution of risk at lower or higher cost 
than anticipated, and changes in indirect cost allocations, such as overhead and general and administrative expenses. 
We employ an extensive contract management process involving several functional organizations and numerous 
personnel who are skilled at managing contract activities. Changes in estimates are frequent; the company performs 
on a broad portfolio of long-term contracts, many of which include complex and customized aerospace and 
electronic equipment and software. These contracts often include technology that is at the forefront of science. 
Significant changes in estimates on a single contract could have a material effect on the company's consolidated 
financial position or annual results of operations, and where such changes occur, separate disclosure is made of the 
nature, underlying conditions and financial impact of the change. Aggregate net changes in contract estimates 
recognized using the cumulative catch-up method of accounting increased operating income by $985 million ($2.53 
per diluted share) in 2012, $738 million ($1.70 per diluted share) in 2011, and $675 million ($1.46 per diluted share) 
in 2010. No discrete event or adjustments to an individual contract within the aggregate net changes in contract 
estimates for 2012, 2011, or 2010 was material to the consolidated statements of earnings and comprehensive 
income for such annual period.

General and Administrative Expenses
In accordance with industry practice and the regulations that govern the cost accounting requirements for 
government contracts, most general and administrative expenses incurred at both the segment and corporate 
locations are considered allowable and allocable costs on government contracts. These costs are allocated to 
contracts in progress on a systematic basis and are included as a component of total contract costs, including any 
provision for loss contracts. 

Research and Development
Company-sponsored research and development activities primarily include independent research and development 
(IR&D) efforts related to government programs. Company-sponsored IR&D expenses are included in general and 
administrative expenses in the consolidated statements of earnings and comprehensive income and are generally 
allocated to government contracts. Company-sponsored IR&D expenses totaled $520 million, $543 million, and 
$580 million, in 2012, 2011, and 2010, respectively. Expenses for research and development sponsored by the 
customer are charged directly to the related contracts.

Environmental Costs
Environmental liabilities are accrued when the company determines that, based on the facts and circumstances 
known to the company, such amounts are reasonably estimable and it is probable that a liability will be found to 
have been incurred. When only a range of amounts is established and no amount within the range is more probable 
than another, the minimum amount in the range is recorded. Environmental liabilities are recorded on an 
undiscounted basis and do not include legal costs or asset retirement obligations. At sites involving multiple parties, 
the company accrues environmental liabilities based upon its expected share of liability, taking into account the 
financial viability of other jointly liable parties. A portion of the environmental remediation costs is expected to be 
recoverable through overhead charges on government contracts and accordingly, such amounts are deferred in 
inventoried costs (current portion) and other non-current assets. Environmental expenditures are expensed or 
capitalized as appropriate. Capitalized expenditures relate to long-lived improvements in currently operating 
facilities. The company does not record insurance recoveries before collection is probable. At December 31, 2012 
and 2011, the company did not have any accrued receivables related to insurance reimbursements.

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NORTHROP GRUMMAN CORPORATION 

Fair Value of Financial Instruments
The company utilizes fair value measurement guidance prescribed by GAAP to value its financial instruments. The 
guidance includes a definition of fair value, prescribes methods for measuring fair value, establishes a fair value 
hierarchy based on the inputs used to measure fair value and expands disclosures about the use of fair value 
measurements.

The valuation techniques utilized are based upon observable and unobservable inputs. Observable inputs reflect 
market data obtained from independent sources, while unobservable inputs reflect internal market assumptions.

These two types of inputs create the following fair value hierarchy:

Level 1 - Quoted prices for identical instruments in active markets.

Level 2 - Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments 

in markets that are not active; and model-derived valuations whose inputs are observable or whose 
significant value drivers are observable.

Level 3 - Significant inputs to the valuation model are unobservable.

Marketable securities accounted as trading and available-for-sale are recorded at fair value. For available-for-sale 
securities, any changes in unrealized gains and losses are reported as a separate component of other comprehensive 
income. Changes in unrealized gains and losses on trading securities are included in other, net in the consolidated 
statements of earnings and comprehensive income. In addition, investments in held-to-maturity instruments with 
original maturities greater than three months are recorded at amortized cost.

Derivative financial instruments are recognized as assets or liabilities in the financial statements and measured at 
fair value. Changes in the fair value of derivative financial instruments that qualify and are designated as fair value 
hedges are recorded in earnings from continuing operations, while the effective portion of the changes in the fair 
value of derivative financial instruments that qualify and are designated as cash flow hedges are recorded in other 
comprehensive income. The company may use derivative financial instruments to manage its exposure to interest 
rate and foreign currency exchange risks and to balance its fixed and variable rate long-term debt portfolio. The 
company does not use derivative financial instruments for trading or speculative purposes, nor does it use leveraged 
financial instruments. Credit risk related to derivative financial instruments is considered minimal and is managed 
by requiring high credit standards for counterparties and through periodic settlements of positions. For derivative 
financial instruments not designated as cash flow hedging instruments, gains or losses resulting from changes in the 
fair value are reported in Other, net in the consolidated statements of earnings and comprehensive income.

Income Taxes
Provisions for federal and foreign income taxes are calculated on reported financial statement pre-tax income based 
on current tax law and include the cumulative effect of any changes in tax rates from those used previously in 
determining deferred tax assets and liabilities. Such provisions differ from the amounts currently payable because 
certain items of income and expense are recognized in different periods for financial reporting purposes than for 
income tax purposes. The company recognizes federal interest accrued related to unrecognized tax benefits in 
income tax expense. In accordance with industry practice and the regulations that govern the cost accounting 
requirements for government contracts, state and local taxes are considered allowable and allocable costs on 
government contracts and are therefore recorded in operating costs and expenses. Likewise, the company recognizes 
state interest accrued related to unrecognized tax benefits in operating costs and expenses. Federal penalties are 
recognized as a component of income tax expense. State and local income and franchise tax provisions are allocable 
to government contracts in process and, accordingly, are included in operating income.

Uncertain tax position represents the company’s expected treatment of a tax position taken in a filed tax return, or 
planned to be taken in a future tax return or claim, that has not been reflected in measuring income tax expense for 
financial reporting purposes. Until these positions are sustained by the taxing authorities or the statute of limitations 
concerning such issues lapses, the company does not recognize the tax benefits resulting from such positions and 
reports the tax effects as a liability for uncertain tax positions in its consolidated statements of financial position.

Cash and Cash Equivalents
Cash and cash equivalents are comprised of cash in banks and highly liquid instruments with original maturities of 
three months or less, primarily consisting of bank time deposits and investments in institutional money market 
funds. The company does not invest in high yield or high risk securities. Cash in bank accounts at times may exceed 
federally insured limits. 

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NORTHROP GRUMMAN CORPORATION 

Accounts Receivable and Inventoried Costs
Accounts receivable include amounts billed and currently due from customers, as well as amounts currently due but 
unbilled (primarily related to contracts accounted for under the cost-to-cost measure of the percentage-of-completion 
method of accounting). Accounts receivable also include certain estimated contract change amounts, claims or 
requests for equitable adjustment in negotiation that are probable of recovery, and amounts retained by the customer 
pending contract completion. 

Accumulated contract costs in unbilled accounts receivable and inventoried costs include direct production costs, 
factory and engineering overhead, production tooling costs, and, for government contracts, allowable general and 
administrative expenses. According to the provisions of U.S. Government contracts, the customer asserts title to, or a 
security interest in, inventories related to such contracts as a result of contract advances, performance-based 
payments, and progress payments. In accordance with industry practice, unbilled accounts receivable and 
inventoried costs are classified as current assets and include amounts related to contracts having production cycles 
longer than one year. Progress payments received in excess of inventoried costs and unbilled accounts receivable 
amounts on a contract by contract basis are recorded as advance payments and billings in excess of costs incurred in 
the consolidated statements of financial position.

Inventoried costs primarily relate to work in process under units-of-delivery contracts. These costs represent 
accumulated contract costs less the portion of such costs allocated to delivered items. Product inventory primarily 
consists of raw materials and is stated at the lower of cost or market, generally using the average cost method.

Property, Plant and Equipment
Property, plant and equipment are depreciated over the estimated useful lives of individual assets. Most of these 
assets are depreciated using declining-balance methods, with the remainder using the straight-line method. Major 
classes of property, plant and equipment and their useful lives are as follows:

Useful life in years, $ in millions

Land and land improvements

Buildings and improvements
Machinery and other equipment
Capitalized software costs
Leasehold improvements
Property, plant and equipment, cost
Accumulated depreciation
Property, plant and equipment, net

Useful Life
   Up to 40(1)
Up to 45
Up to 20
3-5
Length of Lease(1)

December 31

2012

$    373
1,421
4,233
413
593
7,033
(4,146)
$2,887

2011

$    375
1,433
4,143
444
585
6,980
(3,933)
$3,047

(1) 

Land is not a depreciable asset. Leasehold improvements are depreciated over the useful life of the asset if it is 
shorter than the length of the lease.

Leases
The company uses its incremental borrowing rate in the assessment of lease classification as capital or operating and 
defines the initial lease term to include renewal options determined to be reasonably assured. The majority of our 
leases are operating leases.

Many of the company’s real property lease agreements contain incentives for tenant improvements, rent holidays, or 
rent escalation clauses. For tenant improvement incentives, the company records a deferred rent liability and 
amortizes the deferred rent over the term of the lease as a reduction to rent expense. For rent holidays and rent 
escalation clauses during the lease term, the company records minimum rental expenses on a straight-line basis over 
the term of the lease. For purposes of recognizing lease incentives, the company uses the date of initial possession as 
the commencement date, which is generally when the company is given the right of access to the space and begins to 
make improvements in preparation of intended use.

Goodwill and Other Purchased Intangible Assets
The company performs impairment tests for goodwill as of November 30th of each year or when the company 
believes a potential impairment exists. When it is determined that impairment has occurred, a charge to operations is 
recorded. Goodwill and other purchased intangible asset balances are included in the identifiable assets of the 
business segment to which they have been assigned. Purchased intangible assets are generally amortized on a 
straight-line basis over their estimated useful lives.

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NORTHROP GRUMMAN CORPORATION 

Cash Surrender Value of Life Insurance Policies
The company maintains whole life insurance policies on a group of executives, which are recorded at their cash 
surrender value as determined by the insurance carrier. The company also has split-dollar life insurance policies on 
former officers and executives from acquired businesses, which are recorded at the lesser of their cash surrender 
value or premiums paid. These policies are utilized as a partial funding source for deferred compensation and other 
non-qualified employee retirement plans. As of December 31, 2012 and 2011, the carrying values associated with 
these policies are $271 million and $257 million, respectively, and are recorded in other non-current assets in the 
consolidated statements of financial position.

Litigation, Commitments, and Contingencies
Amounts associated with litigation, commitments, and contingencies are recorded as charges to earnings when 
management, after taking into consideration the facts and circumstances of each matter as then known to 
management, including any settlement offers, has determined that it is probable that a liability will be found to have 
been incurred and the amount of the loss can be reasonably estimated. When only a range of amounts is established 
and no amount within the range is more probable than another, the lower end of the range is recorded. Legal fees are 
expensed as incurred.

Retirement Benefits
The company sponsors various pension plans covering substantially all employees. The company also provides post-
retirement benefit plans other than pensions, consisting principally of health care and life insurance benefits, to 
eligible retirees and qualifying dependents. The liabilities, unamortized benefit plan costs and annual income or 
expense of the company’s pension and other post-retirement benefit plans are determined using methodologies that 
involve several actuarial assumptions, the most significant of which are the discount rate, the expected long-term 
rate of asset return, and the health care medical cost experience trend rate. Unamortized benefit plan costs consist 
primarily of accumulated net after-tax actuarial losses.  

Net actuarial gains or losses are amortized to expense in future periods when they exceed ten percent of the greater 
of the plan assets or projected benefit obligations by benefit plan. The excess of gains or losses over the ten percent 
threshold are subject to amortization over the average future service period of employees of approximately ten years. 
The fair values of plan assets are determined based on prevailing market prices or estimated fair value for 
investments with no available quoted prices. Not all net periodic pension income or expense is recognized in net 
earnings in the year incurred because it is allocated to production as product costs, and a portion remains in 
inventory at the end of a reporting period. The company’s funding policy for the qualified pension plans is to 
contribute, at a minimum, the statutorily required amount to an irrevocable trust.

Stock Compensation
All of the company’s stock compensation plans are classified as equity plans and compensation expense recognized 
is net of estimated forfeitures over the vesting period. The company issues stock awards, in the form of restricted 
performance stock rights and restricted stock rights, under its existing plans. The fair value of stock awards is 
determined based on the closing market price of the company’s common stock on the grant date and at each 
reporting date, the number of shares is adjusted to equal the number ultimately expected to vest. Compensation 
expense for stock awards is expensed over the vesting period, generally three years.

Foreign Currency Translation
For operations outside the U.S. that have functional currencies other than the U.S. dollar, results of operations and 
cash flows are translated at average exchange rates during the period, and assets and liabilities are translated at end-
of-period exchange rates. Translation adjustments are generally included as a separate component of accumulated 
other comprehensive loss in the consolidated statements of shareholders' equity.

Accounting Standards Updates 
Accounting standards updates effective after December 31, 2012, are not expected to have a material effect on the 
company's consolidated financial position or results of operations. 

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NORTHROP GRUMMAN CORPORATION 

Accumulated Other Comprehensive Loss 
The components of accumulated other comprehensive loss are as follows:

$ in millions
Unamortized benefit plan costs, net of tax benefit of $3,149 in 2012 and $2,289 in
2011
Cumulative translation adjustment
Net unrealized (loss) gain on marketable securities and cash flow hedges, net of tax
expense of $0 in both 2012 and 2011
Total accumulated other comprehensive loss

December 31

2012

2011

($4,790)
4

(1)
($4,787)

($3,487)
(4)

1
($3,490)

The changes in unamortized benefit plan costs, net of tax, resulted in other comprehensive loss of $1.3 billion and 
$1.2 billion for the years ended December 31, 2012 and 2011, respectively, in the consolidated statements of 
earnings and comprehensive income. Unamortized benefit plan costs consist primarily of net after-tax actuarial loss 
amounts totaling $5.1 billion and $3.9 billion as of December 31, 2012 and 2011, respectively. Net actuarial gains or 
losses are re-determined annually and principally arise from changes in the rate used to discount the benefit 
obligations and differences in expected and actual returns on plan assets. Net actuarial gains or losses are amortized 
to expense in future periods when they exceed 10 percent of the greater of the plan assets or projected benefit 
obligations by benefit plan. The excess of gains or losses over the ten percent threshold are subject to amortization 
over the average future service period of employees of approximately 10 years.

2. EARNINGS PER SHARE, SHARE REPURCHASES AND DIVIDENDS ON COMMON STOCK

Basic Earnings Per Share
Basic earnings per share from both continuing and discontinued operations are calculated by dividing the respective 
earnings by the weighted-average number of shares of common stock outstanding during each period.

Diluted Earnings Per Share
Diluted earnings per share includes the dilutive effect of awards granted to employees under stock-based 
compensation plans. The dilutive effect of these securities totaled 4.8 million, 4.8 million, and 4.2 million shares for 
the years ended December 31, 2012, 2011, and 2010, respectively. The weighted-average diluted shares outstanding 
for the years ended December 31, 2012, 2011, and 2010, excludes anti-dilutive stock options to purchase 
approximately 1.8 million, 2.8 million, and 2.8 million shares, respectively, because such options have exercise 
prices in excess of the average market price of the company’s common stock during the year. 

Share Repurchases
The table below summarizes the company’s share repurchases:

Repurchase Program
Authorization Date

December 19, 2007
June 16, 2010(1)

Amount
Authorized
(in millions)

Total
Shares Retired
(in millions)

Average 
Price
Per Share(2)

Date
Completed

$3,600

$5,350

60.2

65.1

$59.82 August 2010

$59.42

Shares Repurchased
(in millions)
2011
—

—

2010

15.7

2012

20.9

20.9

40.2

40.2

4.0

19.7

(1)  On June 16, 2010, the company’s board of directors authorized a share repurchase program of up to $2.0 
billion of the company’s common stock. Following this initial authorization, the board of directors 
increased the remaining repurchase authorization to $4.0 billion in April 2011. After further repurchases 
reduced the remaining authorization to less than $1 billion, the board of directors again increased the 
remaining authorization to $2.0 billion in September 2012. As of December 31, 2012, repurchases under 
the program totaled $3.9 billion, and $1.5 billion remained under this share repurchase authorization. The 
repurchase program will expire when we have used all authorized funds for repurchase.

(2)  Includes commissions paid.

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NORTHROP GRUMMAN CORPORATION 

Share repurchases take place under pre-established programs, depending on market conditions in the open market or 
in privately negotiated transactions. The company retires its common stock upon repurchase and has not made any 
purchases of common stock other than in connection with these publicly announced repurchase program 
authorizations.

In connection with the spin-off of the former shipbuilding business (see Note 3), the company obtained a Private 
Letter Ruling from the Internal Revenue Service (IRS) that generally limits our share repurchases to approximately 
88 million shares within two years of the spin-off. The limitation expires on March 31, 2013. Since the spin-off we 
have repurchased approximately 61 million shares of our common stock, and as of December 31, 2012, the company 
may repurchase approximately 27 million shares under the Private Letter Ruling limitation. Cash available from 
unusual transactions, such as the disposition of significant assets, should they arise, can be used to repurchase 
additional shares.

Dividends on Common Stock
In May 2012, the company increased the quarterly common stock dividend to $0.55 per share; an increase from the 
previous amount of 0.50 per share.

In May 2011, the company increased the quarterly common stock dividend to $0.50 per share from the previous 
amount of 0.47 per share.

In May 2010, the company increased the quarterly common stock dividend to $0.47 per share from the previous 
amount of 0.43 per share.

3.   BUSINESS DISPOSITIONS

There were no material dispositions in 2012.

Huntington Ingalls Industries, Inc. (HII)
Effective March 31, 2011, the company completed the spin-off to its shareholders of HII. HII was formed to operate 
the company's former shipbuilding business. The company made a pro rata distribution to its shareholders of one 
share of HII common stock for every six shares of the company’s common stock held on the record date of 
March 30, 2011, or 48.8 million shares of HII common stock. HII paid a $1.4 billion cash contribution to the 
company. There was no gain or loss recognized as a result of the spin-off transaction.

Prior to the completion of the spin-off, the company and HII entered into a Separation and Distribution Agreement 
dated March 29, 2011, and several other agreements that govern the post-separation relationship. These agreements 
generally provide that each party is responsible for its respective assets, liabilities and obligations following the 
spin-off, including employee benefits, intellectual property, information technology, insurance, and tax-related assets 
and liabilities.

In connection with the spin-off, the company incurred $28 million of non-deductible transaction costs for each of the 
years ended December 31, 2011 and 2010, which were included in discontinued operations.

National Security Technologies Deconsolidation
Effective January 1, 2011, the company reduced its participation in the National Security Technologies joint venture 
(NSTec). As a result of the reduced participation in the joint venture, the company no longer consolidates NSTec’s 
results in the consolidated financial statements. NSTec’s sales that were included in the company’s total sales for the 
year ended December 31, 2010, were $579 million.

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NORTHROP GRUMMAN CORPORATION 

Discontinued Operations
Earnings for the former shipbuilding business and an adjustment to the gain from a previous divestiture, are reported 
as discontinued operations, as presented in the following table:

$ in millions
Sales
Earnings from discontinued operations
Income tax expense
Earnings, net of tax
Gain on divestiture, net of income tax expense of $1 in 2011 and a benefit of $5 in 2010

Earnings from discontinued operations, net of tax

Year Ended
December 31

2011
$1,646
59
(28)
31
1
$      32

2010
$6,711
229
(95)
134
15
$    149

Tax rates on discontinued operations vary from the company’s effective tax rate generally due to the non-
deductibility of goodwill for tax purposes and the effects, if any, of capital loss carryforwards.

There were no assets or liabilities related to these discontinued operations included in the consolidated statements of 
financial position as of December 31, 2012 or 2011.

4.   SEGMENT INFORMATION

The company is aligned in four reportable segments: Aerospace Systems, Electronic Systems, Information Systems, 
and Technical Services. 

The company, from time to time, acquires or disposes of businesses and realigns contracts, programs or business 
areas among and within its operating segments. Portfolio shaping and internal realignments are designed to more 
fully leverage existing capabilities and enhance development and delivery of products and services. 

Segment Realignment
On January 1, 2012, the company transferred its missile business (principally the Intercontinental Ballistic Missile 
(ICBM) program), from Aerospace Systems to Technical Services. The segment sales and segment operating income 
for the years ended December 31, 2011 and 2010, have been recast to reflect the missile business transfer. Sales of 
$494 million and $474 million for the years ended December 31, 2011 and 2010, respectively, were transferred from 
Aerospace Systems to Technical Services. Segment operating income of $44 million and $43 million for the years 
ended December 31, 2011 and 2010, respectively, were transferred from Aerospace Systems to Technical Services.

U.S. Government Sales
Revenue from the U.S. Government (which includes Foreign Military Sales) includes revenue from contracts for 
which Northrop Grumman is the prime contractor, as well as those for which the company is a subcontractor and the 
ultimate customer is the U.S. Government. All of the company’s segments derive substantial revenue from the U.S. 
Government. Sales to the U.S. Government amounted to $22.7 billion, $23.9 billion, and $25.5 billion, or 90.0 
percent, 90.5 percent, and 90.6 percent, of total revenue for the years ended December 31, 2012, 2011, and 2010, 
respectively.

Foreign Sales
Direct foreign sales amounted to $1.6 billion, or approximately 6 percent, of total revenue for each of the years 
ended December 31, 2012, 2011, and 2010.

Discontinued Operations
The company’s discontinued operations are excluded from all of the amounts in the following tables.

Assets
Substantially all of the company’s operating assets are located or maintained in the U.S.

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NORTHROP GRUMMAN CORPORATION 

Results of Operations By Segment
The following table presents sales and operating income by segment:

$ in millions
Sales

Aerospace Systems
Electronic Systems
Information Systems
Technical Services
Intersegment eliminations
Total sales
Operating income

Aerospace Systems
Electronic Systems
Information Systems
Technical Services
Intersegment eliminations
Total segment operating income

Reconciliation to operating income:
Unallocated corporate expenses
Net FAS/CAS pension adjustment
Other

Total operating income

Year Ended December 31
2011

2010

2012

$ 9,977
6,950
7,356
3,019
(2,084)
25,218

1,218
1,187
761
268
(258)
3,176

$ 9,964
7,372
7,921
3,193
(2,038)
26,412

$10,436
7,613
8,395
3,705
(2,006)
28,143

1,217
1,070
766
260
(258)
3,055

1,213
1,023
756
249
(231)
3,010

(168)
132
(10)
$ 3,130

(166)
400
(13)
$ 3,276

(182)
10
(11)
$ 2,827

Unallocated Corporate Expenses
Unallocated corporate expenses include the portion of corporate expenses not considered allowable or allocable 
under applicable U.S. government Cost Accounting Standards (CAS) regulations and the Federal Acquisition 
Regulation, and therefore not allocated to the segments. Such costs consist of a portion of management and 
administration, legal, environmental, compensation costs, retiree benefits, as well as certain unallowable costs such 
as for lobbying activities, among others.

Net FAS/CAS Pension Adjustment
The net FAS (GAAP Financial Accounting Standards)/CAS pension adjustment is the difference between pension 
expense determined in accordance with GAAP and pension expense allocated to the operating segments determined 
in accordance with CAS. For the years ended December 31, 2012, 2011, and 2010, the net FAS/CAS pension 
adjustment resulted in income of $132 million, $400 million, and $10 million, respectively. The decrease in the 2012 
net FAS/CAS pension adjustment is primarily due to increased GAAP pension expense resulting from amortization 
of prior year actuarial losses and reduced CAS pension expense resulting from a plan amendment in 2011.

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NORTHROP GRUMMAN CORPORATION 

Intersegment Sales and Margin
Sales between segments are recorded at values that include a hypothetical margin for the performing segment based 
on that segment’s estimated margin rate for external sales. Such hypothetical margins are eliminated in 
consolidation. Intersegment sales and operating income before eliminations were as follows:

$ in millions

Intersegment sales and operating income

Aerospace Systems
Electronic Systems
Information Systems
Technical Services

Total

Other Financial Information

2012

Year Ended December 31
2011

2010

Sales

Operating
Income

Sales

Operating
Income

Sales

Operating
Income

$   171
607
682
624

$2,084

$  20
110
78
50

$258

$   134
649
687
568
$2,038

$  18
131
68
41
$258

$   133
684
623
566
$2,006

$ 13
118
61
39
$231

$ in millions
Assets

Aerospace Systems
Electronic Systems
Information Systems
Technical Services
Segment assets
Corporate

Total assets

Corporate assets principally consist of cash and cash equivalents and deferred tax assets.

December 31

2012

2011

$  6,657
4,551
6,940
1,313
19,461
7,082
$26,543

$  6,525
4,705
7,144
1,352
19,726
5,685
$25,411

$ in millions

Aerospace Systems
Electronic Systems
Information Systems
Technical Services
Corporate

Total from continuing operations

Capital Expenditures
2011

2012

2010

Depreciation and Amortization
2012
2010
2011

$154
84
40
3
50
$331

$184
121
45
1
141
$492

$195
176
37
5
172
$585

$196
139
100
4
71
$510

$200
144
121
4
75
$544

$237
150
133
5
30
$555

The depreciation and amortization expense above includes amortization of purchased intangible assets, as well as 
amortization of deferred and other outsourcing costs.

5.   ACCOUNTS RECEIVABLE, NET

Unbilled amounts represent sales for which billings have not been presented to customers by period-end. These 
amounts are usually billed and collected within one year. Progress payments are received on a number of fixed-
priced contracts. Unbilled amounts are presented net of progress payments of $5.0 billion and $6.4 billion at 
December 31, 2012, and 2011, respectively.

Substantially all accounts receivable at December 31, 2012, are expected to be collected in 2013.

The company does not believe it has significant exposure to credit risk as accounts receivable and the related 
unbilled amounts are primarily from contracts where the U.S. Government is the primary customer.

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NORTHROP GRUMMAN CORPORATION 

Accounts receivable consisted of the following:

$ in millions
Due on U.S. Government contracts

Amounts billed
Recoverable costs and accrued profit on progress completed - unbilled

Due on non-U.S. Government contracts

Amounts billed
Recoverable costs and accrued profit on progress completed - unbilled

Total accounts receivable
Allowance for doubtful accounts
Total accounts receivable, net

6.   INVENTORIED COSTS, NET

Inventoried costs consisted of the following:

$ in millions
Production costs of contracts in process
General and administrative expenses

Progress payments received

Product inventory
Total inventoried costs, net

7.   INCOME TAXES

December 31

2012

2011

$   794
1,396
2,190

314
414
728
2,918
(60)
$2,858

$   812
1,594
2,406

249
363
612
3,018
(54)
$2,964

December 31

2012
$1,593
262
1,855
(1,167)
688
110
$    798

2011
$1,629
221
1,850
(1,100)
750
123
$    873

The company’s effective tax rate on earnings from continuing operations for the year ended December 31, 2012, was 
33.3 percent, as compared with 32.3 percent and 19.5 percent for the years ended December 31, 2011 and 2010, 
respectively. The company's higher effective tax rate for 2012, as compared to 2011, reflects the absence of research 
tax credits, which expired at the end of 2011. The company's higher effective tax rate for 2011, as compared to 2010, 
was primarily due to recognized net tax benefits of $298 million in 2010 to reflect the final approval from the IRS 
and the U.S. Congressional Joint Committee on Taxation of the IRS’ examination of our tax returns for the years 
2004 through 2006.

Federal and foreign income tax expense consisted of the following:

$ in millions
Income Taxes on Continuing Operations

Currently payable

Federal income taxes
Foreign income taxes

Total federal and foreign income taxes currently payable
Change in deferred federal and foreign income taxes
Total federal and foreign income taxes

Year Ended December 31
2011

2010

2012

$912
15
927
60
$987

$592
18
610
387
$997

$394
11
405
57
$462

Earnings from foreign continuing operations before income taxes is not material for all periods presented.

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NORTHROP GRUMMAN CORPORATION 

Income tax expense differs from the amount computed by multiplying the statutory federal income tax rate times the 
earnings from continuing operations before income taxes due to the following:

$ in millions
Income tax expense on continuing operations at statutory rate
Manufacturing deduction
Research tax credit
Tax settlements and adjustments to uncertain tax position accruals
Other, net
Total federal and foreign income taxes

2010

Year Ended December 31
2011
$1,079
(32)
(17)
—
(33)
$    997

2012
$1,038
(42)
—
—
(9)
$    987

$ 828
(33)
(12)
(298)
(23)
$ 462

Uncertain Tax Positions
The company files income tax returns in the U.S. federal jurisdiction, and in various state and foreign jurisdictions. 
The IRS is currently conducting an examination of the company's tax returns for the years 2007 through 2011. Open 
tax years related to state and foreign jurisdictions remain subject to examination, but are not considered material. 

Although the company believes that it has adequately provided for all of its tax positions, amounts asserted by 
taxing authorities in future years could be greater than the company’s accrued positions. Accordingly, additional 
provisions on income tax related matters could be recorded in the future due to revised estimates, settlement or other 
resolution of the underlying tax matters. 

The change in unrecognized tax benefits during 2012, 2011, and 2010, excluding interest, is as follows:

$ in millions
Unrecognized tax benefits at beginning of the year
Additions based on tax positions related to the current year
Additions for tax positions of prior years
Reductions for tax positions of prior years
Settlements
Net change in unrecognized tax benefits
Unrecognized tax benefits at end of the year

December 31
2011
$126
11
31
(22)
(28)
(8)
$118

2012
$118
12
28
(1)
(1)
38
$156

2010
$429
19
4
—
(326)
(303)
$126

These liabilities, along with $19 million of accrued interest and penalties, are included in other non-current liabilities 
in the consolidated statements of financial position. If the income tax benefits from these tax positions are ultimately 
realized, $128 million of federal and foreign benefits would affect the company’s effective tax rate. 

During the years ended December 31, 2012, 2011, and 2010, the company recorded approximately ($1) million, ($5) 
million, and $88 million of net interest (expense)/income, respectively, within its federal, foreign and state income 
tax provisions.

Deferred Income Taxes
Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets 
and liabilities for financial reporting purposes and tax purposes. Such amounts are classified in the consolidated 
statements of financial position as current or non-current assets or liabilities based upon the classification of the 
related assets and liabilities.

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The tax effects of significant temporary differences and carryforwards that gave rise to year-end deferred federal, 
state and foreign tax balances, as presented in the consolidated statements of financial position, are as follows:

$ in millions
Deferred Tax Assets
Retirement benefits
Provisions for accrued liabilities
Stock-based compensation
Other

Gross deferred tax assets

Less valuation allowance

Net deferred tax assets
Deferred Tax Liabilities

Goodwill
Property, plant, and equipment, net
Contract accounting differences
Other

Gross deferred tax liabilities
Total net deferred tax assets

December 31

2012

2011

$2,710
675
146
151
3,682
(52)
3,630

804
376
199
135
1,514
$2,116

$1,819
649
130
147
2,745
(50)
2,695

716
277
218
88
1,299
$1,396

Realization of the deferred tax asset is primarily dependent on generating sufficient taxable income in future periods. 
The company believes it is more-likely-than-not that all deferred tax assets will be realized, net of any valuation 
allowances currently established.

At December 31, 2012, the company has available unused net operating losses of $185 million that may be applied 
against future taxable income, primarily in the United Kingdom that may be used indefinitely. A valuation allowance 
of $52 million has been recorded against the tax assets due to the uncertainty of the realization of these net operating 
losses and other deferred tax assets principally in foreign jurisdictions.

Undistributed Foreign Earnings
As of December 31, 2012, the company has accumulated undistributed earnings generated by its foreign 
subsidiaries. No deferred tax liability has been recorded on these earnings since the company intends to permanently 
reinvest these earnings. Should these earnings be distributed in the form of dividends or otherwise, the distributions 
would be subject to U.S. federal income tax at the statutory rate of 35 percent, less foreign tax credits available to 
offset such distributions, if any. In addition, such distributions may be subject to withholding taxes in the various tax 
jurisdictions. 

8.   GOODWILL AND OTHER PURCHASED INTANGIBLE ASSETS

Goodwill
Goodwill and other purchased intangible assets are included in the identifiable assets of the segment to which the 
operations of the acquired entity have been assigned. Impairment tests are performed at least annually and more 
often as circumstances require. Any goodwill impairment, as well as the amortization of other purchased intangible 
assets, is charged against the respective segment’s operating income. Our annual impairment test was performed as 
of November 30, 2012, for all segments. In performing the goodwill impairment tests, the company uses a 
discounted cash flow approach corroborated by comparative market multiples, where appropriate, to determine the 
fair value of its businesses. Adverse changes in political and economic conditions, such as the potential for 
sequestration and/or actions on the national debt ceiling by the U.S. Government, or changes in other factors 
affecting the impairment analysis, such as discount rates, could result in an impairment of our goodwill in the future. 
Information Systems is the segment most sensitive to future impairment. Accumulated goodwill impairment losses 
at December 31, 2012, and 2011, totaled $570 million at the Aerospace Systems segment.

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NORTHROP GRUMMAN CORPORATION 

The changes in the carrying amounts of goodwill for the years ended December 31, 2012 and 2011, were as follows:

$ in millions

Balance as of December 31, 2010

Businesses sold
Balance as of December 31, 2011

Businesses acquired, sold and other
Balance as of December 31, 2012

Aerospace
Systems

Electronic
Systems

Information
Systems

Technical
Services

$3,801

—

$3,801
(43)

$3,758

$2,402
(2)
$2,400
10

$2,410

$5,248

—

$5,248
39

$5,287

$925

—

$925
51

$976

Total

$12,376
(2)
$12,374
57

$12,431

Segment Realignments
On January 1, 2012, the company transferred its missile business (principally the ICBM program), from Aerospace 
Systems to Technical Services. In connection with this realignment, $51 million of goodwill was transferred from 
Aerospace Systems to Technical Services and is reflected in the amounts above for all years presented. 

Purchased Intangible Assets
As of December 31, 2012 and 2011, gross contract, program, and other intangible assets were $1.8 billion and 
accumulated amortization was $1.7 billion. Net contract, program, and other intangible assets were $137 million, at 
December 31, 2012, and $155 million at December 31, 2011. 

Amortization expense for 2012, 2011, and 2010, was $36 million, $37 million, and $71 million, respectively. The 
company’s purchased intangible assets are being amortized on a straight-line basis over an aggregate weighted-
average period of 17 years and are included in other non-current assets in the consolidated statements of financial 
position. As of December 31, 2012, the expected future amortization of purchased intangibles for each of the next 
five years is $30 million in 2013, $18 million in 2014, $17 million in 2015, $11 million in 2016, and $10 million in 
2017.

9.   FAIR VALUE OF FINANCIAL INSTRUMENTS

The following table presents the fair value information for those assets and liabilities measured at fair value on a 
recurring basis:

$ in millions
Financial Assets (Liabilities)
Marketable Securities

Trading
Available-for-sale
Held-to-maturity time deposits

Derivatives
Long-term debt, including current portion

December 31, 2012
Fair
Value

Carrying
Value

December 31, 2011
Fair
Value

Carrying
Value

$    259
3
—
(1)
(3,935)

$    259
3
—
(1)
(4,834)

$    219
4
250
7
(3,940)

$    219
4
250
7
(4,675)

There were no transfers of financial instruments between the three levels of fair value hierarchy during the years 
ended December 31, 2012 and 2011.

The carrying value of cash and cash equivalents approximate fair value.

Investments in Marketable Securities
The company holds a portfolio of marketable securities to partially fund long-term deferred compensation programs, 
consisting of equity securities that are classified as either trading or available-for-sale, which can be liquidated 
without restriction. These assets are recorded at fair value and are valued using Level 1 inputs (quoted market 
prices). In addition, the company occasionally holds short-term investments classified as held-to-maturity that are 
recorded at cost. As of December 31, 2012, marketable securities of $261 million were included in other non-current 
assets in the consolidated statements of financial position. As of December 31, 2011, marketable securities of $250 
million were included in prepaid expenses and other current assets and $223 million were included in other non-
current assets in the consolidated statements of financial position.

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NORTHROP GRUMMAN CORPORATION 

Derivative Financial Instruments and Hedging Activities
The company's derivative portfolio consists primarily of foreign currency forward contracts. Foreign currency 
forward contracts are used to manage foreign currency exchange rate risk related to receipts from customers and 
payments to suppliers denominated in foreign currencies. Derivative financial instruments are recognized as assets 
or liabilities in the financial statements and measured at fair value, and substantially all of these instruments are 
valued using Level 2 inputs. Where model-derived valuations are appropriate, the company utilizes the income 
approach to determine the fair value and uses the applicable London Interbank Offered Rate (LIBOR) swap rate as 
the discount rate. 

The notional values for the company's derivative portfolio at December 31, 2012 and 2011, were $164 million and 
$233 million, respectively. The portion of the notional values designated as cash flow hedges at December 31, 2012 
and 2011, were $110 million and $145 million, respectively. 

Unrealized gains or losses on the effective portion of cash flow hedges are reclassified from other comprehensive 
income to earnings from continuing operations upon the settlement of the underlying transactions. The derivative 
fair values and related unrealized gains/losses at December 31, 2012 and 2011, were not material. Hedge contracts 
not designated for hedge accounting and the ineffective portion of cash flow hedges are recorded in other income. 

Long-Term Debt
The fair value of long-term debt was calculated using Level 2 inputs based on interest rates available for debt with 
terms and maturities similar to the company’s existing debt arrangements.

10.   LONG-TERM DEBT

Lines of Credit
The company has available uncommitted short term credit lines in the form of money market facilities with several 
banks. The amount and conditions for borrowing under these credit lines depend on the availability and terms 
prevailing in the marketplace. No fees or compensating balances are required for these credit facilities. 

Credit Facility
In September 2012, the company entered into a 364-day revolving credit facility in an aggregate principal amount of 
$500 million (the "2012 Credit Agreement") replacing the company's 364-day revolving credit facility entered into 
in September 2011 (the "2011 Credit Agreement"). The terms and conditions of the 2012 Credit Agreement are 
substantially the same as the terms and conditions in the 2011 Credit Agreement, which restrict the company’s 
ability to sell all or substantially all of its assets, merge or consolidate with another entity or undertake other 
fundamental changes and incur liens. The company also cannot permit the ratio of its consolidated debt to 
capitalization (as set forth in the Credit Agreement) to exceed 65 percent. The company is in compliance with all 
covenants under the Credit Agreement. There were no borrowings under the credit facility for the year ended 
December 31, 2012, and no balance outstanding under the credit facility at December 31, 2012.

In September 2011, the Company entered into two senior unsecured credit facilities (the Credit Agreements) in an 
aggregate principal amount of $2 billion. The first Credit Agreement amended the company’s $2 billion five-year 
credit facility dated August 10, 2007, by reducing the aggregate principal amount available under the facility by 
$500 million to $1.5 billion and extending the maturity date to September 2016. The second Credit Agreement is a 
364-day revolving credit facility in an aggregate principal amount of $500 million which ended in September 2012. 
The credit facilities permit the company to request additional lending commitments of up to $500 million from the 
lenders under the agreement or through other eligible lenders under certain circumstances. Borrowings under the 
credit facilities bear interest at various rates, including LIBOR (or an alternate base rate), plus an incremental margin 
based on the company’s credit ratings and credit default swap spread. The credit facilities also require a commitment 
fee based on the daily aggregate unused amount of commitments and the company’s credit ratings, and contain a 
financial covenant relating to a maximum debt to capitalization ratio, and certain restrictions on additional asset 
liens. There were no borrowings under the credit facilities in the years ended December 31, 2012, and 2011, and no 
balances outstanding under the credit facilities at December 31, 2012 and 2011. As of December 31, 2012, the 
company was in compliance with all covenants under these Credit Agreements.

Debt Tender Offer
In November 2010, the company made a tender offer for $1.9 billion of debt securities issued by its subsidiary, 
Northrop Grumman Systems Corporation, maturing in 2016 to 2036 with interest rates ranging from 6.98 percent to 
7.875 percent. Approximately $682 million in aggregate principal amount was purchased for a total price of $919 
million (including accrued and unpaid interest on the securities). The company recorded a pre-tax charge of $229 
million principally related to the premiums paid on the debt tendered.

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NORTHROP GRUMMAN CORPORATION 

Long-term debt consists of the following:

$ in millions
Fixed-rate notes and debentures, maturing in

2014
2015
2016
2018
2019
2021
2026
2031
2040

Capital leases
Other
Total long-term debt
Less current portion
Long-term debt, net of current portion

Interest rate
3.70%
1.85%
7.75%
6.75%
5.05%
3.50%
7.81%
7.75%
5.05%
Various
Various

December 31

2012

2011

$    350
500
107
200
500
700
527
466
300
32
253
3,935
5
$3,930

$    350
500
107
200
500
700
527
466
300
37
253
3,940
5
$3,935

Indentures underlying long-term debt issued by the company or its subsidiaries contain various restrictions with 
respect to the issuer, including one or more restrictions relating to limitations on liens, sale-leaseback arrangements, 
and funded debt of subsidiaries. The majority of these fixed rate notes and debentures are subject to redemption at 
the company’s discretion at any time prior to maturity in whole or in part at the principal amount plus any make-
whole premium and accrued and unpaid interest. Interest on these fixed rate notes and debentures are payable semi-
annually in arrears. 

Maturities of long-term debt as of December 31, 2012, are as follows:

$ in millions
Year Ending December 31

2013
2014
2015
2016
2017
Thereafter

Total principal payments
Unamortized premium on long-term debt, net of discount
Total long-term debt

$       5
353
502
110
3
2,951
3,924
11
$3,935

The premium on long-term debt primarily represents non-cash fair market value adjustments resulting from 
acquisitions, which are amortized over the life of the related debt.

11.   INVESTIGATIONS, CLAIMS AND LITIGATION

Litigation
The company is one of several defendants in litigation brought by the Orange County Water District in Orange 
County Superior Court in California on December 17, 2004, for alleged contribution to volatile organic chemical 
contamination of the County's shallow groundwater. The lawsuit includes counts against the defendants for violation 
of the Orange County Water District Act, the California Super Fund Act, negligence, nuisance, trespass and 
declaratory relief. Among other things, the lawsuit seeks unspecified damages for the cost of remediation, payment 
of attorney fees and costs, and punitive damages. Trial on the statutory claims (those based on the Orange County 
Water District Act, the California Super Fund Act and declaratory relief) concluded on September 25, 2012. On 

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NORTHROP GRUMMAN CORPORATION 

December 11, 2012, the court issued a tentative decision on these claims in favor of the company and the other 
remaining defendants. The court has scheduled a hearing for February 28, 2013, to discuss issues on which it has 
invited supplemental briefing. The court has not yet set a trial date for the remaining causes of action.

On May 4, 2012, the company commenced an action, Northrop Grumman Systems Corp. v. United States, in the 
U.S. Court of Federal Claims. This lawsuit relates to an approximately $875 million firm fixed price contract 
awarded to the company in 2007 by the U.S. Postal Service (USPS) for the construction and delivery of flats 
sequencing systems (FSS) as part of the postal automation program. The FSS have been delivered. The company's 
lawsuit is based on various theories of liability. The complaint seeks approximately $63 million for unpaid portions 
of the contract price and direct costs incurred, and approximately $115 million based on the company's assertions 
that, through various acts and omissions over the life of the contract, the USPS adversely affected the cost and 
schedule of performance and materially altered the company's obligations under the contract. The United States 
responded to the company's complaint with an answer, denying most of the company's claims, and counterclaims, 
seeking approximately $410 million, less certain amounts outstanding under the contract. The principal counterclaim 
alleges that the company delayed its performance and caused damages to the USPS because USPS did not realize 
certain costs savings as early as it had expected. Although the ultimate outcome of this litigation, including any 
possible loss, cannot be predicted or estimated at this time, the company intends vigorously to pursue this matter. 

The company is a party to various investigations, lawsuits, claims and other legal proceedings, including 
government investigations and claims, that arise in the ordinary course of our business. The nature of legal 
proceedings is such that we cannot assure the outcome of any particular matter. However, based on information 
available to the company to date and other than with respect to the FSS matter, which is discussed separately above, 
the company does not believe that the outcome of any matter pending against the company is likely to have a 
material adverse effect on the company's consolidated financial position as of December 31, 2012, or its annual 
results of operations or cash flows.

12.   COMMITMENTS AND CONTINGENCIES

Guarantees of Subsidiary Performance Obligations 
From time to time in the ordinary course of business, the company guarantees obligations of its subsidiaries under 
certain contracts. Generally, the company is liable under such an arrangement only if its subsidiary is unable to 
perform under its contract. Historically, the company has not incurred any substantial liabilities resulting from these 
guarantees.

In addition, the company’s subsidiaries may enter into joint ventures, teaming and other business arrangements 
(collectively, Business Arrangements) to support the company’s products and services in domestic and international 
markets. The company generally strives to limit its exposure under these arrangements to its subsidiary’s investment 
in the Business Arrangements, or to the extent of such subsidiary’s obligations under the applicable contract. In 
some cases, however, the company may be required to guarantee performance by the Business Arrangements and, in 
such cases, the company generally obtains cross-indemnification from the other members of the Business 
Arrangements.

At December 31, 2012, the company is not aware of any existing event of default that would require it to satisfy any 
of these guarantees.

U.S. Government Cost Claims
From time to time, the company is advised of claims by the U.S. Government concerning certain potential 
disallowed costs, plus, at times, penalties and interest. When such findings are presented, the company and the U.S. 
Government representatives engage in discussions to enable the company to evaluate the merits of these claims, as 
well as to assess the amounts being claimed. Where appropriate, provisions are made to reflect the company’s 
expected exposure to the matters raised by the U.S. Government. Such provisions are reviewed on a quarterly basis 
for sufficiency based on the most recent information available. The company believes that it has adequately reserved 
for any disputed amounts and that the outcome of any such matters would not have a material adverse effect on its 
consolidated financial position as of December 31, 2012, or its annual results of operations or cash flows.

Environmental Matters
The company has been named a Potentially Responsible Party by the Environmental Protection Agency or similarly 
designated state or local agencies at certain current or former owned or leased sites. The estimated costs to complete 
remediation has been accrued where the company believes, based on the facts and circumstances known to the 
company, that it is probable that the company will incur costs to address environmental impacts. As of December 31, 
2012, management estimates that the range of reasonably possible future costs for environmental remediation is 

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NORTHROP GRUMMAN CORPORATION 

between $314 million and $746 million, before considering the amount recoverable through overhead charges on 
U.S. Government contracts. At December 31, 2012, the amount accrued for probable environmental remediation 
costs was $342 million, of which $88 million is accrued in other current liabilities and $254 million is accrued in 
other non-current liabilities. A portion of the environmental remediation costs is expected to be recoverable through 
overhead charges on government contracts and, accordingly, such amounts are deferred in inventoried costs and 
other non-current assets. As of December 31, 2012, $57 million is deferred in inventoried costs and $147 million is 
deferred in other non-current assets. These amounts are evaluated for recoverability on a routine basis. Although 
management cannot predict whether new information gained as projects progress will materially affect the estimated 
liability accrued, management does not anticipate that future remediation expenditures will have a material adverse 
effect on the company's consolidated financial position as of December 31, 2012, or its annual results of operations 
or cash flows.

Financial Arrangements
In the ordinary course of business, the company uses standby letters of credit and guarantees issued by commercial 
banks, and surety bonds issued principally by insurance companies to guarantee the performance on certain 
obligations. At December 31, 2012, there were $193 million of stand-by letters of credit, $295 million of bank 
guarantees, and $168 million of surety bonds outstanding.

Indemnifications
The company has retained certain warranty, environmental, income tax, and other potential liabilities in connection 
with certain of its divestitures. The settlement of these liabilities is not expected to have a material adverse effect on 
the company’s consolidated financial position as of December 31, 2012, or its annual results of operations or cash 
flows.

Operating Leases
Rental expense for operating leases, excluding discontinued operations, was $347 million in 2012, $420 million in 
2011, and $448 million in 2010. These amounts are net of immaterial amounts of sublease rental income. Minimum 
rental commitments under long-term non-cancelable operating leases as of December 31, 2012, are payable as 
follows:

$ in millions

Year Ending December 31

2013

2014

2015

2016

2017

Thereafter

Total Minimum Lease Payments

13.   RETIREMENT BENEFITS 

$  274

237

198

157

76

129

$1,071

Plan Descriptions
Defined Benefit Pension Plans – The company sponsors several defined benefit pension plans in the U.S. covering 
the majority of its employees. Pension benefits for most employees are based on the employee’s years of service, 
age and compensation. It is the policy of the company to fund at least the minimum amount required for all qualified 
plans, using actuarial cost methods and assumptions acceptable under U.S. Government regulations, by making 
payments into benefit trusts separate from the company. 

Defined Contribution Plans – The company also sponsors 401(k) defined contribution plans in which most 
employees are eligible to participate, including certain bargaining unit employees. Company contributions for most 
plans are based on a cash matching of employee contributions up to 4 percent of compensation. The company also 
participates in a multiemployer plan for certain of the company’s union employees. In addition to the 401(k) defined 
contribution benefit, certain employees hired after June 30, 2008, are eligible to participate in a defined contribution 
program in lieu of a defined benefit pension plan. The company’s contributions to these defined contribution plans 
for the years ended December 31, 2012, 2011, and 2010, were $293 million, $297 million, and $288 million, 
respectively.

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NORTHROP GRUMMAN CORPORATION 

Non-U.S. Benefit Plans – The company sponsors several benefit plans for non-U.S. employees. These plans are 
designed to provide benefits appropriate to local practice and in accordance with local regulations. Some of these 
plans are funded using benefit trusts that are separate from the company.

Medical and Life Benefits – The company provides a portion of the costs for certain health care and life insurance 
benefits for a substantial number of its active and retired employees. Certain covered employees achieve eligibility 
to participate in these contributory plans upon retirement from active service if they meet specified age and years of 
service requirements. Qualifying dependents are also eligible for medical coverage. Approximately 55 percent of the 
company’s current retirees participate in the medical plans. The company reserves the right to amend or terminate 
the plans at any time. In November 2006, the company adopted plan amendments and communicated to plan 
participants that it would cap the amount of its contributions to substantially all of its remaining post retirement 
medical and life benefit plans that were previously not subject to limits on the company’s contributions.

In addition to a company and employee cost-sharing feature, the plans also have provisions for deductibles, co-
payments, coinsurance percentages, out-of-pocket limits, conformance to a schedule of reasonable fees, the use of 
managed care providers, and coordination of benefits with other plans. The plans also provide for a Medicare carve-
out. Subsequent to January 1, 2005 (or earlier at some segments), newly hired employees are not eligible for post 
retirement medical and life benefits.

Summary Plan Results
The cost to the company of its retirement benefit plans in each of the three years ended December 31 is shown in the 
following table: 

$ in millions
Components of net periodic benefit cost

Service cost
Interest cost
Expected return on plan assets
Amortization of:

Prior service cost (credit)
Net loss from previous years
Other

Net periodic benefit cost

Year Ended December 31

Pension Benefits

2012

2011

2010

2012

Medical and
Life Benefits
2011

$   522
1,184
(1,708)

(58)
427
7
$   374

$   520
1,223
(1,690)

23
162

—
$   238

$   531
1,212
(1,517)

35
206
—
$   467

$ 34
109
(68)

(51)
21
—
$ 45

$ 32
114
(62)

(51)
17
(6)
$ 44

2010

$ 34
117
(56)

(51)
18
—
$ 62

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NORTHROP GRUMMAN CORPORATION 

The table below summarizes the components of changes in unamortized benefit plan costs for the years ended 
December 31, 2012, 2011, and 2010:

$ in millions
Changes in unamortized benefit plan costs
Change in net actuarial loss
Amortization of:

Prior service (cost) credit
Net loss from previous years
Tax expense related to above items
Change in unamortized benefit plan costs – 2010
Change in net actuarial loss
Change in prior service cost
Amortization of:

Prior service (cost) credit
Net loss from previous years
Tax benefit related to above items
Change in unamortized benefit plan costs – 2011
Change in net actuarial loss
Change in prior service cost
Amortization of:

Prior service credit
Net loss from previous years
Tax benefit related to above items
Change in unamortized benefit plan costs – 2012

Pension
Benefits

Medical and
Life Benefits

Total

($   158)

($  64)

($   222)

(48)
(244)
171
($   279)
$2,687
(608)

(23)
(162)
(752)
$1,142
$2,353
(2)

58
(427)
(788)
$1,194

60
(26)
12
($  18)
$138
6

51
(17)
(71)
$107
$151
—

51
(21)
(72)
$109

12
(270)
183
($   297)
$2,825
(602)

28
(179)
(823)
$1,249
$2,504
(2)

109
(448)
(860)
$1,303

Unamortized benefit plan costs consist primarily of accumulated actuarial losses totaling $5.1 billion and $3.9 
billion, both after tax, as of December 31, 2012 and 2011, respectively. The change in net actuarial loss from 
pension benefits in 2012 was primarily due to the reduction in the discount rate assumption to 4.12 percent at 
December 31, 2012, from 5.03 percent at December 31, 2011, partially offset by higher than expected return on plan 
assets in 2012.

In December 2011, the company adopted certain changes in its defined benefit pension plans designed to enable the 
company to remain competitive within its marketplace and provide the affordability its customers require. These 
changes represent modifications to the defined benefits available to employees hired prior to July 1, 2008 who retire 
beginning after December 31, 2012. As a result of these changes, the company recognized a reduction of 
approximately $640 million in its projected benefit obligations for the affected employee groups as of December 31, 
2011. Due to these changes, certain nonqualified benefit plans experienced curtailments, however the net impact of 
these curtailment events was not material.

$ in millions
Amounts recorded in accumulated other comprehensive loss

Net actuarial loss
Prior service credit
Income tax benefits related to above items

Unamortized benefit plan costs

Pension
Benefits

Medical and Life
Benefits

2012

2011

2012

2011

($8,057)
481
3,003
($4,573)

($6,131)
537
2,215
($3,379)

($461)
98
146
($217)

($331)
149
74
($108)

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NORTHROP GRUMMAN CORPORATION 

The following tables set forth the funded status and amounts recognized in the consolidated statements of financial 
position for the company’s defined benefit pension and retiree health care and life insurance benefit plans. Pension 
benefits data includes the qualified plans as well as 11 domestic unfunded non-qualified plans for benefits provided 
to directors, officers, and certain employees. The company uses a December 31 measurement date for all of its plans.

$ in millions
Change in projected benefit obligation

Projected benefit obligation at beginning of year
Service cost
Interest cost
Plan participants’ contributions
Plan amendments
Actuarial loss
Benefits paid
Other

Projected benefit obligation at end of year

$ in millions
Change in plan assets

Fair value of plan assets at beginning of year
Gain on plan assets
Employer contributions
Plan participants’ contributions
Benefits paid
Other

Fair value of plan assets at end of year
Funded status
Amounts recognized in the Consolidated Statements of
Financial Position

Non-current assets
Current liability
Non-current liability

Pension Benefits

2012

2011

$24,129
522
1,184
12
(1)
3,114
(1,220)
6
$27,746

$21,820
520
1,223
14
(608)
2,379
(1,197)
(22)
$24,129

Pension Benefits

2012

2011

$21,340
2,463
366
12
(1,220)
1
22,962
($ 4,784)

$20,081
1,342
1,084
14
(1,197)
16
21,340
($ 2,789)

Medical and
Life Benefits
2012

2011

$2,235
34
109
81
—
202
(227)
14
$2,448

$2,104
32
114
82
6
107
(224)
14
$2,235

Medical and
Life Benefits
2012

2011

$   946
119
129
81
(227)
14
1,062
($1,386)

$   932
31
111
82
(224)
14
946
($1,289)

$        7
(111)
(4,680)

$    112
(104)
(2,797)

$      49
(30)
(1,405)

$      41
(48)
(1,282)

The following table shows those amounts expected to be recognized in net periodic benefit cost in 2013: 

$ in millions
Amounts expected to be recognized in 2013 net periodic
benefit cost

Net actuarial loss
Prior service credit

Pension Benefits

Medical and
Life Benefits

$608
(58)

$30
(51)

The accumulated benefit obligation for all defined benefit pension plans was $27.2 billion and $23.6 billion at 
December 31, 2012 and 2011, respectively.

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NORTHROP GRUMMAN CORPORATION 

Amounts for pension plans with accumulated benefit obligations in excess of fair value of plan assets are as follows: 

$ in millions
Projected benefit obligation
Accumulated benefit obligation
Fair value of plan assets

December 31

2012
$ 27,645
27,146
22,853

2011
$ 22,451
21,949
19,550

Plan Assumptions
On a weighted-average basis, the following assumptions were used to determine the benefit obligations and the net 
periodic benefit cost: 

Assumptions used to determine benefit obligation at December 31

Discount rate
Rate of compensation increase
Initial health care cost trend rate assumed for the 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

Assumptions used to determine benefit cost for the year ended
December 31

Discount rate
Expected long-term return on plan assets
Rate of compensation increase
Initial health care cost trend rate assumed for the 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

Pension Benefits  
2011

2012

4.12% 5.03%
2.75% 2.75%

5.03% 5.75%
8.25% 8.50%
2.75% 3.50%

Medical and
Life Benefits
2012

2011

4.02% 5.02%

7.00% 7.50%

5.00% 5.00%
2017
2017

5.02% 5.62%
7.44% 6.86%

7.50% 8.00%

5.00% 5.00%
2017
2017

The discount rate is generally based on the yield on high-quality corporate fixed-income investments. At the end of 
each year, the discount rate is primarily determined using a portfolio of high-quality bonds matching the notional 
cash inflows with the expected benefit payments for each significant benefit plan.

Through consultation with investment advisors, expected long-term returns for each of the plans’ strategic asset 
classes were developed. Several factors were considered, including survey of investment managers’ expectations, 
current market data such as yields/price-earnings ratios, and historical market returns over long periods. Using 
policy target allocation percentages and the asset class expected returns, a weighted-average expected return was 
calculated. 

The assumptions used for pension benefits are consistent with those used for retiree medical and life insurance 
benefits. The long-term rate of return on plan assets used for the medical and life benefits are reduced to allow for 
the impact of tax on expected returns as, unlike the pension trust, the earnings of certain Voluntary Employee 
Beneficiary Association (VEBA) trusts are taxable.

A one-percentage-point change in the initial through the ultimate health care cost trend rates would have the 
following effects:

$ in millions
Increase (decrease) from change in health care cost trend rates to

Post-retirement benefit expense
Post-retirement benefit liability

1-Percentage-
Point Decrease

1-Percentage-
Point Increase

 $ (6)
(88)

  $ 5
73

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NORTHROP GRUMMAN CORPORATION 

Plan Assets and Investment Policy
Plan assets are invested in various asset classes that are expected to produce a sufficient level of diversification and 
investment return over the long term. The investment goal is to exceed the assumed rate of return over the long term 
within reasonable and prudent levels of risk. Liability studies are conducted on a regular basis to provide guidance in 
setting investment goals with an objective to balance risk. Risk targets are established and monitored against 
acceptable ranges.

All investment policies and procedures are designed to ensure that the plans’ investments are in compliance with 
ERISA. Guidelines are established defining permitted investments within each asset class. Derivatives are used for 
transitioning assets, asset class rebalancing, managing currency risk, and for management of fixed income and 
alternative investments. 

For the majority of the plans’ assets, the investment policies require that the asset allocation be maintained within 
the following ranges as of December 31, 2012:

Domestic equities
International equities
Fixed income securities
Alternative investments

  Asset Allocation Ranges
10% - 30%
  5% - 25%
30% - 50%
15% - 30%

The table below provides the fair values of the company’s pension and VEBA trust plan assets at December 31, 
2012, and 2011, by asset category. The table also identifies the level of inputs used to determine the fair value of 
assets in each category (see Note 1 for definition of levels). The significant amount of Level 2 investments in the 
table results from including in this category investments in pooled funds that contain investments with values based 
on quoted market prices, but for which the funds are not valued on a quoted market basis, and fixed income 
securities that are valued using model based pricing services.

$ in millions
Asset category
Domestic equities
International equities
Fixed income securities

Cash and cash equivalents(1)
U.S. Treasuries
U.S. Government Agency

Non-U.S. Government

Corporate debt

Asset backed
High yield debt
Bank loans

Alternative Investments

Hedge funds
Private equities
Real estate

Other
Fair value of plan assets at the
end of the year

Level 1

Level 2

Level 3

Total

2012

2011

2012

2011

2012

2011

2012

2011

$3,657
1,700

$3,849
1,266

$   318
2,319

$       1
1,716

$      2

$       2

$ 3,977
4,019

$ 3,852
2,982

92

75

1,748
1,780

1,528
1,872

968

965

401

4,123
528
1,139
223

324

3,686
525
977
150

(5)

5

14

4
28

4
41

758
1,980
2,256

1,405
2,098
1,788

1,840
1,780

1,603
1,872

968

965

401

4,123
532
1,167
223

758
1,980
2,256
—

324

3,686
529
1,018
150

1,405
2,098
1,788
14

$5,444

$5,190

$13,552

$11,758

$5,028

$5,338

$ 24,024

$22,286

(1) 

Cash and cash equivalents are predominantly held in money market funds.

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NORTHROP GRUMMAN CORPORATION 

The changes in the fair value of the pension and VEBA plan trust assets measured using Level 3 significant 
unobservable inputs during 2012 and 2011, are as follows:

$ in millions
Balance as of December 31, 2010
Actual return on plan assets:

Unrealized gains (losses), net
Realized gains (losses), net

Purchases
Sales
Balance as of December 31, 2011
Actual return on plan assets:

Unrealized gains (losses), net
Realized gains (losses), net

Purchases
Sales
Balance as of December 31, 2012

Domestic
equities
$2

Asset
Backed
$4

—
—
—

—
$2

5
(5)
—
—
$2

—
—
—

—
$4

—
—
—
—
$4

High yield
debt

$78

(2)
—
10
(45)
$41

10
—
—
(23)
$28

Hedge
funds
$1,521

Private
equities
$1,945

Real
Estate
$1,402

(43)
25
413
(511)
$1,405

13
47
—
(707)
$758

19
(13)
503
(356)
$2,098

(122)
—
259
(255)
$1,980

198
(4)
460
(268)
$1,788

68
—
846
(446)
$2,256

Total
$4,952

172
8
1,386
(1,180)
$5,338

(26)
42
1,105
(1,431)
$5,028

Generally, investments are valued based on information in financial publications of general circulation, statistical 
and valuation services, records of security exchanges, appraisal by qualified persons, transactions and bona fide 
offers. Domestic and international equities consist primarily of common stocks and institutional common trust 
funds. Investments in common and preferred shares are valued at the last reported sales price of the stock on the last 
business day of the reporting period. Units in common trust funds and hedge funds are valued based on the 
redemption price of units owned by the trusts at year-end. Fair value for real estate and private equity partnerships is 
primarily based on valuation methodologies that include third party appraisals, comparable transactions, discounted 
cash flow valuation models, and public market data.

Non-government fixed income securities are invested across various industry sectors and credit quality ratings. 
Generally, investment guidelines are written to limit securities, for example, to no more than 5 percent of each trust 
account, and to exclude the purchase of securities issued by the company. The number of real estate and private 
equity partnerships is 164 and the unfunded commitments are $810 million and $882 million as of December 31, 
2012, and 2011, respectively. For alternative investments that cannot be redeemed, such as limited partnerships, the 
typical investment term is ten years. For alternative investments that permit redemptions, such redemptions are 
generally made quarterly and require a 90-day notice. The company is generally unable to determine the final 
redemption date and amount until the request is processed by the investment fund and therefore categorizes such 
alternative investments as Level 3 assets. 

For the years ended December 31, 2012, and 2011, the defined benefit pension and VEBA trusts did not hold any 
Northrop Grumman common stock.

Benefit Payments
The following table reflects estimated future benefit payments, based upon the same assumptions used to measure 
the benefit obligation, and includes expected future employee service, as of December 31, 2012:

$ in millions
Year Ending December 31
2013
2014
2015
2016
2017
2018 through 2022

Pension Plans

Medical and
Life Plans

$1,291
1,347
1,402
1,454
1,507
8,410

$147
153
157
160
162
829

In 2013, the company expects to contribute the required minimum funding level of approximately $66 million to its 
pension plans and approximately $110 million to its other post-retirement benefit plans. The company also expects 

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NORTHROP GRUMMAN CORPORATION 

to make additional voluntary pension contributions of approximately $500 million in 2013. During the years ended 
December 31, 2012 and 2011, the company made voluntary pension contributions of $300 million and $1 billion, 
respectively.

14.   STOCK COMPENSATION PLANS AND OTHER COMPENSATION ARRANGEMENTS
Stock Compensation Plans
At December 31, 2012, Northrop Grumman had stock-based compensation awards outstanding under the following 
plans: the 2001 Long-Term Incentive Stock Plan (2001 Plan) and the 2011 Long-Term Incentive Stock Plan (2011 
Plan), both applicable to employees, and the 1993 Stock Plan for Non-Employee Directors (1993 SPND) and 1995 
Stock Plan for Non-Employee Directors (1995 SPND) as amended. All of these plans were approved by the 
company’s shareholders. The company has historically issued new shares to satisfy award grants.

Employee Plans – On May 18, 2011, the shareholders of the company approved the company’s new 2011 Plan, 
which replaced the expired 2001 Plan. The 2011 Plan permit grants to key employees of three general types of stock 
incentive awards: stock options, stock appreciation rights (SARs), and stock awards. Each stock option grant is 
made with an exercise price either at the closing price of the stock on the date of grant (market options) or at a 
premium over the closing price of the stock on the date of grant (premium options). Outstanding stock options 
granted prior to 2008 generally vest in 25 percent increments over four years from the grant date, and grants 
outstanding expire ten years after the grant date. Stock options granted after January 1, 2008 vest in 33 percent 
increments over three years from the grant date and grants outstanding expire seven years after the grant date. No 
SARs have been granted under either plan. Stock awards, in the form of restricted performance stock rights and 
restricted stock rights, are granted to key employees without payment to the company. The 2011 Plan also provides 
equity-based award grants to non-employee directors.

Under the 2011 Plan, the company is authorized to issue or transfer shares of common stock pursuant to any of the 
types of awards mentioned above. The 2011 Plan authorized 39.1 million new shares plus 6.9 million shares from 
the 2001 LTISP that were previously authorized and available to be issued at the date the 2001 Plan expired. Under 
the terms of the 2011 Plan, in the event that outstanding awards under the 2001 Plan expire or terminate without 
being exercised or paid, as the case may be, such shares (the “Forfeited Shares”) will become available for award 
under the 2011 Plan.

Recipients of restricted performance stock rights earn shares of stock, based on financial metrics determined by the 
board of directors in accordance with the plan. For grants prior to 2010, if the objectives have not been met at the 
end of the applicable performance period, up to 100 percent of the original grant for members of the Corporate 
Policy Council (consisting of the CEO and certain other leadership positions) and up to 70 percent of the original 
grant for all other recipients will be forfeited. For grants in 2010 and after, all recipients could forfeit up to 100 
percent of the original grant, and all recipients could earn up to 200 percent of the original grant. Restricted 
performance stock rights and restricted stock rights issued under either plan generally vest after three or four years. 
Termination of employment can result in forfeiture of some or all of the benefits extended. Shares issued under the 
2011 Plan other than for stock options, stock appreciation rights and the Forfeited Shares will be counted against the 
2011 Plan’s aggregate share limit as 4.5 shares for every one share actually issued in connection with the award; any 
shares issued for stock options, stock appreciation rights and the Forfeited Shares will be counted against the 
remaining shares on a one for one basis.

As of December 31, 2012, 37 million shares are available for grant under the 2011 Plan.

Non-Employee Director Plans – Under the 2011 Plan, each non-employee director must defer a portion of their 
compensation into a stock unit account (Automatic Stock Units). The Automatic Stock Units accrued under the 2011 
Plan and the 1993 SPND are paid out in the form of common stock at the conclusion of the director's board service, 
or earlier, as specified by the director, if he or she has five or more years of service. In addition, each director may 
elect to defer payment of all or a portion of his or her remaining cash retainer or committee retainer fees into a stock 
unit account (Elective Stock Units). The Elective Stock Units are paid at the conclusion of board service or earlier as 
specified by the director, regardless of years of service. Directors are credited with dividend equivalents in 
connection with the accumulated stock units until shares of common stock related to such stock units are issued.  
Since all directors are eligible to receive awards under the 2011 LTISP, shares from this plan are available for future 
director awards following the same share counting limits as described for the employee plans. Awards under the 
2011 Plan are made pursuant to the Northrop Grumman Corporation Equity Grant Program for Non-Employee 
Directors under the 2011 Plan which sets forth the terms and conditions for the awards of stock units as described 
above.

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NORTHROP GRUMMAN CORPORATION 

The 1995 SPND provided for an annual grant of nonqualified stock options to each non-employee director. Since 
June 2005, no new grants have been issued under that 1995 SPND. Each grant of stock options under the 1995 
SPND was made at the closing market price on the date of the grant and expires ten years from the date of grant. As 
of December 31, 2012, only three non-employee directors held unexercised options.   

Compensation Expense
Stock-based compensation expense and the related tax benefits for the years ended December 31, 2012, 2011, and 
2010, were as follows:  

$ in millions

Stock-based compensation expense:

Stock options

Stock awards

Total stock-based compensation expense

Tax benefits from the exercise of stock options

Tax benefits from the issuance of stock awards
Tax benefits recognized for stock-based compensation

Year Ended December 31

2012

2011

2010

$  10

$  14

$  27

173

183

26

19
$  45

125

139

18

37
$  55

107

134

17

36
$  53

At December 31, 2012, there was $114 million of unrecognized compensation expense related to unvested awards 
granted under the company’s stock-based compensation plans, of which $5 million relates to stock options and $109 
million relates to stock awards. These amounts are expected to be charged to expense over a weighted-average 
period of 1.3 years.

Stock Options
There were no stock options issued in 2012. Stock option activity for the year ended December 31, 2012, was as 
follows:

Outstanding at January 1, 2012

Granted
Exercised
Cancelled and forfeited

Outstanding at December 31, 2012
Vested and expected to vest in the future at
December 31, 2012
Exercisable at December 31, 2012

Shares
under Option
(in thousands)
11,744
—
(5,404)
(69)
6,271

6,257
4,874

Weighted-
Average
Exercise
Price

$53
—
47
61
58

58
$58

Weighted-
Average
Remaining
Contractual
Term
3.4 years

Aggregate
Intrinsic
Value
($ in millions)
$93

2.9 years

2.9 years
2.5 years

66

66
$53

The total intrinsic value of options exercised during the years ended December 31, 2012, 2011, and 2010, was $97 
million, $46 million, and $42 million, respectively. Intrinsic value is measured using the fair market value at the date 
of exercise (for options exercised) or at December 31, 2012 (for outstanding options), less the applicable exercise 
price.

Stock Awards
Compensation expense for stock awards is measured at the grant date based on the fair value of the award and is 
recognized over the vesting period, generally three years. The fair value of stock awards and performance stock 
awards is determined based on the closing market price of the company’s common stock on the grant date. The fair 
value of market-based stock awards is determined at the grant date using a Monte Carlo simulation model. For 
purposes of measuring compensation expense for performance awards, the number of shares ultimately expected to 
vest is estimated at each reporting date based on management’s expectations regarding the relevant performance 
criteria.

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NORTHROP GRUMMAN CORPORATION 

Stock award activity for the years ended December 31, 2012, 2011, and 2010, is presented in the table below. Vested 
awards include stock awards fully vested during the year and net adjustments to reflect the final performance 
measure for issued shares.

Outstanding at January 1, 2010

Granted

Vested

Forfeited

Outstanding at December 31, 2010

Granted

Vested

Forfeited

Shipbuilding spin-off adjustments
Outstanding at December 31, 2011

Granted

Vested

Forfeited

Outstanding at December 31, 2012

Stock
Awards
(in thousands)

Weighted-
Average
Grant Date
Fair Value

3,658

2,317
(1,319)
(356)
4,300

1,748
(1,824)
(350)
(252)
3,622
1,860
(1,800)
(204)
3,478

$58

60

79

56

$53

63

42

50

$47

$58
60

55
59
$61

Weighted-
Average
Remaining
Contractual
Term (in years)
1.6

1.5

1.6

1.6

The company issued 2.8 million, 1.4 million, and 1.3 million shares to employees in settlement of prior year stock 
awards that were fully vested, which had total fair values at issuance of $172 million, $87 million, and $76 million 
and grant date fair values of $75 million, $101 million, and $91 million during the years ended December 31, 2012, 
2011, and 2010, respectively. The differences between the fair values at issuance and the grant date fair values 
reflect the effects of the performance adjustments and changes in the fair market value of the company’s common 
stock.

On February 15, 2012, the company granted certain employees 0.5 million restricted stock rights (RSRs) and 1.2 
million restricted performance stocks rights (RPSRs) under the company's long-term incentive stock plan, with a 
grant date aggregate fair value of $102 million. The RSRs will vest on the third anniversary of the grant date, while 
the RPSRs will vest and pay out based on the achievement of financial metrics for the three-year period ending 
December 31, 2014.

In 2013, the company expects to issue to employees 3.4 million shares of common stock from the 2010 stock award 
grant that vested as of December 31, 2012, with a grant date fair value of $96 million. The ultimate amount of shares 
to be paid out is subject to approval by the Compensation Committee of the Board of Directors and may vary from 
this estimate.

Cash Awards
On February 15, 2012, the company granted certain employees 0.6 million cash units (CUs) and 1.3 million cash 
performance units (CPUs) with a minimum aggregate payout amount of $34 million and a maximum aggregate 
payout amount of $190 million. The CUs will vest and settle in cash on the third anniversary of the grant date, while 
the CPUs will vest and pay out based on the achievement of financial metrics for the three-year period ending 
December 31, 2014. At December 31, 2012, there was $125 million of unrecognized compensation expense related 
to cash awards.

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NORTHROP GRUMMAN CORPORATION 

15.   UNAUDITED SELECTED QUARTERLY DATA

Unaudited quarterly financial results are set forth in the following tables. It is the company’s long-standing practice 
to establish actual interim closing dates using a “fiscal” calendar, which requires the businesses to close their books 
on a Friday, in order to normalize the potentially disruptive effects of quarterly close on business processes. The 
effects of this practice only exist within a reporting year.

2012
In millions, except per share amounts
Sales
Operating income
Net earnings

Basic earnings per share
Diluted earnings per share

Weighted-average common shares outstanding
Weighted-average diluted shares outstanding

1st Qtr
$6,198
796
506

2nd Qtr
$6,274
774
480

3rd Qtr
$6,270
736
459

4th Qtr
$6,476
824
533

2.00
1.96

253.1
258.0

1.91
1.88

250.8
254.7

1.86
1.82

247.2
252.1

2.19
2.14

243.4
248.9

Significant 2012 Fourth Quarter Events – In the fourth quarter of 2012, the company repurchased 7.3 million shares 
of common stock for $487 million.

2011
In millions, except per share amounts
Sales
Operating income
Net earnings

Basic earnings per share
Diluted earnings per share

Weighted-average common shares outstanding
Weighted-average diluted shares outstanding

1st Qtr
$6,734
811
530

2nd Qtr
$6,560
841
520

3rd Qtr
$6,612
825
520

4th Qtr
$6,506
799
548

1.82
1.79

291.8
296.9

1.84
1.81

282.6
287.2

1.89
1.86

274.9
279.3

2.12
2.09

258.2
262.7

In the first quarter of 2011, net earnings included $34 million from discontinued operations, and earnings per share 
included $0.12 from discontinued operations. In the fourth quarter of 2011, net earnings included a $2 million loss 
from discontinued operations, and basic earnings per share included a $0.01 reduction due to discontinued 
operations.   

Significant 2011 Fourth Quarter Events – In the fourth quarter of 2011, the company made a $500 million 
contribution to the company’s pension plans. Additionally, the company repurchased 11.8 million shares of common 
stock for $649 million.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

DISCLOSURE CONTROLS AND PROCEDURES

Our principal executive officer (Chairman, Chief Executive Officer and President) and principal financial officer 
(Corporate Vice President and Chief Financial Officer) have evaluated the company’s disclosure controls and 
procedures as of December 31, 2012, and have concluded that these controls and procedures are effective to ensure 
that information required to be disclosed by us in the reports that we file or submit under the Securities Exchange 
Act of 1934 (15 USC § 78a et seq) is recorded, processed, summarized, and reported within the time periods 
specified in the Securities and Exchange Commission’s rules and forms. These disclosure controls and procedures 
include, without limitation, controls and procedures designed to ensure that information required to be disclosed in 
the reports that we file or submit is accumulated and communicated to management, including the principal 

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NORTHROP GRUMMAN CORPORATION 

executive officer and the principal financial officer, as appropriate to allow timely decisions regarding required 
disclosure.

CHANGES IN INTERNAL CONTROL OVER FINANCIAL REPORTING

During the fourth quarter of 2012, no change occurred in the company’s internal control over financial reporting that 
materially affected, or is likely to materially affect, the company’s internal control over financial reporting.

Item 9B. Other Information

None.

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MANAGEMENT’S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

The management of Northrop Grumman Corporation (the company) prepared and is responsible for the consolidated 
financial statements and all related financial information contained in this Annual Report. This responsibility 
includes establishing and maintaining effective internal control over financial reporting. The company’s internal 
control over financial reporting was designed to provide reasonable assurance regarding the reliability of financial 
reporting and the preparation of financial statements for external purposes in accordance with accounting principles 
generally accepted in the United States of America.

To comply with the requirements of Section 404 of the Sarbanes–Oxley Act of 2002, the company designed and 
implemented a structured and comprehensive assessment process to evaluate its internal control over financial 
reporting across the enterprise. The assessment of the effectiveness of the company’s internal control over financial 
reporting was based on criteria established in Internal Control—Integrated Framework issued by the Committee of 
Sponsoring Organizations of the Treadway Commission. Because of its inherent limitations, a system of internal 
control over financial reporting can provide only reasonable assurance and may not prevent or detect misstatements. 
Management regularly monitors its internal control over financial reporting, and actions are taken to correct any 
deficiencies as they are identified. Based on its assessment, management has concluded that the company’s internal 
control over financial reporting is effective as of December 31, 2012.

Deloitte & Touche LLP issued an attestation report dated February 4, 2013, concerning the company’s internal 
control over financial reporting, which is contained in this Annual Report. The company’s consolidated financial 
statements as of and for the year ended December 31, 2012, have been audited by the independent registered public 
accounting firm of Deloitte & Touche LLP in accordance with the standards of the Public Company Accounting 
Oversight Board (United States).

/s/   Wesley G. Bush

Chairman, Chief Executive Officer and President

/s/    James F. Palmer

Corporate Vice President and Chief Financial Officer

February 4, 2013 

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of
Northrop Grumman Corporation
Falls Church, Virginia

We have audited the internal control over financial reporting of Northrop Grumman Corporation and subsidiaries 
(the “Company”) as of December 31, 2012, based on criteria established in Internal Control — Integrated 
Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. The Company’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 Management’s Report 
on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal 
control over financial reporting based on our audit.

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 by, or under the supervision of, the 
company’s principal executive and principal financial officers, or persons performing similar functions, and effected 
by the company’s board of directors, management, and other personnel 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 company; (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 company are being made only in 
accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance 
regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that 
could have a material effect on the financial statements.

Because of the inherent limitations of internal control over financial reporting, including the possibility of collusion 
or improper management override of controls, material misstatements due to error or fraud may not be prevented or 
detected on a timely basis. Also, projections of any evaluation of the effectiveness of the internal control over 
financial reporting to future periods are subject to the risk that the 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, the Company maintained, in all material respects, effective internal control over financial reporting 
as of December 31, 2012, based on the criteria established in Internal Control – Integrated Framework issued by the 
Committee of Sponsoring Organizations of the Treadway Commission.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United 
States), the consolidated financial statements as of and for the year ended December 31, 2012 of the Company and 
our report dated February 4, 2013 expressed an unqualified opinion on those financial statements.

/s/    Deloitte & Touche LLP
McLean, Virginia
February 4, 2013

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NORTHROP GRUMMAN CORPORATION 

Item 10. Directors, Executive Officers, and Corporate Governance

PART III

DIRECTORS

Information about our Directors will be incorporated herein by reference to the Proxy Statement for the 2013 Annual 
Meeting of Stockholders, to be filed with the Securities and Exchange Commission within 120 days after the end of 
our fiscal year.

EXECUTIVE OFFICERS

Our executive officers as of February 4, 2013, are listed below, along with their ages on that date, positions and 
offices with the company, and principal occupations and employment during the past five years.

Name
Wesley G. Bush

M. Sidney Ashworth

Kenneth L.
Bedingfield

Age

Office Held

51 Chairman, Chief
Executive Officer
and President

Since
2010

Prior Business Experience (Last Five Years)
President and Chief Operating Officer (2007-2009);
Prior to March 2007, President and Chief Financial
Officer (2006-2007); Corporate Vice President and
Chief Financial Officer (2005-2006)

61 Corporate Vice
President,
Government
Relations

40 Corporate Vice
President,
Controller, and
Chief Accounting
Officer

2010 Vice President of Washington Operations, GE

Aviation (2010); Prior to March 2010, Principal, the
Ashworth Group (2009-2010); Professional Staff
Member , U.S. Senate Committee on Appropriations
(1995-2009)

2011

Partner and National Client Leader for Aerospace &
Defense, KPMG LLP (2010-2011); Prior to
December 2010, Partner KPMG LLP (2005-2010)

Mark A. Caylor

48 Corporate Vice 

2013 Corporate Vice President and Treasurer (2011-2012);

President and 
President,  
Enterprise Shared 
Services

Assistant Treasurer (2008-2011); Director, Mergers
& Acquisitions (2006-2008)

Sheila C. Cheston

54 Corporate Vice

2010 Executive Vice President and Director, BAE

President and
General Counsel

Gloria A. Flach

54 Corporate Vice 

President and 
President, 
Electronic 
Systems Sector

Systems, Inc. (2009 -2010); Prior to September
2009, Senior Vice President, General Counsel,
Secretary and Director, BAE Systems, Inc.
(2002-2009)

2013 Corporate Vice President and President, Enterprise
Shared Services (2010-2012); Sector Vice President
and General Manager, Targeting Systems Division,
Electronic Systems (ES) Sector (2010); Prior to
2010, Sector Vice President and General Manager of
Engineering, Manufacturing and Logistics, ES
Sector (2009); Sector Vice President and General
Manager of Engineering & Logistics, ES Sector
(2007-2008); Sector Vice President and Chief
Information Officer, ES Sector (2004-2006)

Darryl M. Fraser

54 Corporate Vice
President,
Communications

2008

Sector Vice President of Business Development and
Strategic Initiatives, Mission Systems Sector (2007-
March 2008); Prior to May 2007, Sector Vice
President, Strategic Initiatives, Mission Systems
Sector (2007); Vice President, Washington
Operations, Mission Systems and Space Technology
Sectors (2005-2007)

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NORTHROP GRUMMAN CORPORATION 

Name
Christopher T. Jones

Age

Office Held
48 Corporate Vice

Linda A. Mills

President and
President,
Technical
Services

63 Corporate Vice
President,
Operations

Prior Business Experience (Last Five Years)

Since
2013 Vice President and General Manager, Integrated 
Logistics and Modernization Division, Technical 
Services Sector (2010-2012); Director of Product 
Support (2004-2010)

2013 Corporate Vice President and President, Information
Systems Sector (2009-2012); Corporate Vice
President and President, Information Technology
Sector (2008); Prior to 2008, President of the
Civilian Agencies business group, Information
Technology Sector (2007-2008); Vice President for
Operations and Processes, Information Technology
Sector (2005-2007)

James F. Palmer

63 Corporate Vice

2007 Executive Vice President and Chief Financial

President and
Chief Financial
Officer

Officer, Visteon Corporation (2004-2007)

Denise M. Peppard

56 Corporate Vice

2011 Vice President and Chief Human Resources,

President and
Chief Human
Resources Officer

Computer Sciences Corporation (2010-2011); Senior
Vice President of Human Resources, Wyeth
Pharmaceuticals, Inc. (2001-2010)

David T. Perry

48 Corporate Vice

2012 Vice President and General Manager of Naval and

President and
Chief Global
Business
Development
Officer

Marine Systems Division, Electronic Systems Sector
(2009-2012); Vice President of Marine Systems,
Electronic Systems Sector (2005-2009)

Thomas E. Vice

50 Corporate Vice

2013 Corporate Vice President and President, Technical

President and
President,
Aerospace
Systems Sector

Services (2010-2012); Sector Vice President and
General Manager, Battle Management and
Engagement Systems Division, Aerospace Systems
Sector (2008-2010); Prior to 2008, Vice President,
Airborne Early Warning and Battle Management
Command and Control – Navy Programs, Integrated
Systems Sector (2006-2007); Sector Vice President
of Business Development, Integrated Systems Sector
(2004-2006)

Kathy J. Warden

41 Corporate Vice 

2013 Vice President and General Manager, Cyber 

President and 
President, 
Information 
Systems Sector

Intelligence Division (2011-2012); Vice President, 
Cyber and SIGINT business unit(2008-2011); Vice 
President, Intelligence Systems, General Dynamics 
Corporation (2007-2008) 

AUDIT COMMITTEE FINANCIAL EXPERT

The information as to the Audit Committee and the Audit Committee Financial Expert will be incorporated herein by 
reference to the Proxy Statement for the 2013 Annual Meeting of Stockholders to be filed within 120 days after the 
end of the company’s fiscal year.

CODE OF ETHICS

We have adopted Standards of Business Conduct for all of our employees, including the principal executive officer, 
principal financial officer and principal accounting officer. The Standards of Business Conduct can be found on our 
internet web site at www.northropgrumman.com under “Investor Relations – Corporate Governance – Overview.” A 
copy of the Standards of Business Conduct is available to any stockholder who requests it by writing to: Northrop 
Grumman Corporation, c/o Office of the Secretary, 2980 Fairview Park Drive, Falls Church, VA 22042.

The website and information contained on it or incorporated in it are not intended to be incorporated in this report on 
Form 10-K or other filings with the Securities Exchange Commission.

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NORTHROP GRUMMAN CORPORATION 

OTHER DISCLOSURES

Other disclosures required by this Item will be incorporated herein by reference to the Proxy Statement for the 2013 
Annual Meeting of Stockholders to be filed within 120 days after the end of the company’s fiscal year.

Item 11. Executive Compensation

Information concerning Executive Compensation, including information concerning Compensation Committed 
Interlocks and Insider Participation and Compensation Committee Report, will be incorporated herein by reference 
to the Proxy Statement for the 2013 Annual Meeting of Stockholders to be filed within 120 days after the end of the 
company’s fiscal year.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder 
Matters

The information as to Securities Authorized for Issuance Under Equity Compensation Plans and Security Ownership 
of Certain Beneficial Owners and Management and Related Stockholder Matters will be incorporated herein by 
reference to the Proxy Statement for the 2013 Annual Meeting of Stockholders to be filed within 120 days after the 
end of the company’s fiscal year.

Item 13. Certain Relationships and Related Transactions, and Director Independence

The information as to Certain Relationships and Related Transactions, and Director Independence will be 
incorporated herein by reference to the Proxy Statement for the 2013 Annual Meeting of Stockholders to be filed 
within 120 days after the end of the company’s fiscal year.

Item 14. Principal Accountant Fees and Services

The information as to principal accountant fees and services will be incorporated herein by reference to the Proxy 
Statement for the 2013 Annual Meeting of Shareholders to be filed within 120 days after the end of the company’s 
fiscal year.

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NORTHROP GRUMMAN CORPORATION 

Item 15. Exhibits and Financial Statement Schedules

(a)  1. Report of Independent Registered Public Accounting Firm

Financial Statements

PART IV

Consolidated Statements of Earnings and Comprehensive Income
Consolidated Statements of Financial Position
Consolidated Statements of Cash Flows
Consolidated Statements of Changes in Shareholders’ Equity
Notes to Consolidated Financial Statements

2. Financial Statement Schedules

All schedules have been omitted because they are not applicable, not required, or the information has been 
otherwise supplied in the financial statements or notes to the financial statements.

3. Exhibits

2(a)

2(b)

3(a)

3(b)

4(a)

4(b)

4(c)

4(d)

Agreement and Plan of Merger among Titan II, Inc. (formerly Northrop Grumman Corporation),
Northrop Grumman Corporation (formerly New P, Inc.) and Titan Merger Sub Inc., dated
March 29, 2011 (incorporated by reference to Exhibit 10.1 to Form 8-K filed April 4, 2011)

Separation and Distribution Agreement dated as of March 29, 2011, among Titan II, Inc.
(formerly Northrop Grumman Corporation), Northrop Grumman Corporation (formerly New P,
Inc.), Huntington Ingalls Industries, Inc., Northrop Grumman Shipbuilding, Inc. and Northrop
Grumman Systems Corporation (incorporated by reference to Exhibit 10.2 to Form 8-K filed
April 4, 2011)

Amended and Restated Certificate of Incorporation of Northrop Grumman Corporation dated
May 29, 2012 (incorporated by reference to Exhibit 3.1 to Form 10-Q for the quarter ended June
30, 2012, filed July 24, 2012)

Amended and Restated Bylaws of Northrop Grumman Corporation dated May 29, 2012
(incorporated by reference to Exhibit 3.2 to Form 10-Q for the quarter ended June 30, 2012, filed
July 24, 2012)

Registration Rights Agreement dated as of January 23, 2001, by and among Northrop Grumman
Corporation (now Northrop Grumman Systems Corporation), NNG, Inc. (now Northrop
Grumman Corporation) and Unitrin, Inc. (incorporated by reference to Exhibit(d)(6) to
Amendment No. 4 to Schedule TO filed January 31, 2001)

Indenture dated as of October 15, 1994, between Northrop Grumman Corporation (now Northrop
Grumman Systems Corporation) and The Chase Manhattan Bank (National Association), Trustee
(incorporated by reference to Exhibit 4.1 to Form 8-K filed October 25, 1994)

First Supplemental Indenture dated as of March 30, 2011 by and among Northrop Grumman
Systems Corporation, The Bank of New York Mellon (successor trustee to JPMorgan Chase
Bank and The Chase Manhattan Bank, N.A.), Titan II, Inc. (formerly known as Northrop
Grumman Corporation), and Titan Holdings II, L.P., to Indenture dated as of October 15, 1994,
between Northrop Grumman Corporation (now Northrop Grumman Systems Corporation) and
The Chase Manhattan Bank, N.A., Trustee (incorporated by reference to Exhibit 4.1 to Form 10-
Q for the quarter ended March 31, 2011, filed April 27, 2011)

Second Supplemental Indenture dated as of March 30, 2011 by and among Northrop Grumman
Systems Corporation, The Bank of New York Mellon (successor trustee to JPMorgan Chase
Bank and The Chase Manhattan Bank, N.A.), Titan Holdings II, L.P., and Northrop Grumman
Corporation (formerly known as New P, Inc.), to Indenture dated as of October 15, 1994,
between Northrop Grumman Corporation (now Northrop Grumman Systems Corporation) and
The Chase Manhattan Bank, N.A., Trustee (incorporated by reference to Exhibit 4.2 to Form 10-
Q for the quarter ended March 31, 2011, filed April 27, 2011)

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NORTHROP GRUMMAN CORPORATION 

4(e)

4(f)

4(g)

4(h)

4(i)

4(j)

4(k)

4(l)

4(m)

4(n)

4(o)

Form of Officers’ Certificate (without exhibits) establishing the terms of Northrop Grumman
Corporation’s (now Northrop Grumman Systems Corporation’s) 7.75 percent Debentures due
2016 and 7.875 percent Debentures due 2026 (incorporated by reference to Exhibit 4-3 to
Form S-4 Registration Statement No. 333-02653 filed April 19, 1996)

Form of Northrop Grumman Corporation’s (now Northrop Grumman Systems Corporation’s)
7.75 percent Debentures due 2016 (incorporated by reference to Exhibit 4-5 to Form S-4
Registration Statement No. 333-02653 filed April 19, 1996)

Form of Northrop Grumman Corporation’s (now Northrop Grumman Systems Corporation’s)
7.875 percent Debentures due 2026 (incorporated by reference to Exhibit 4-6 to Form S-4
Registration Statement No. 333-02653 filed April 19, 1996)

Form of Officers’ Certificate establishing the terms of Northrop Grumman Corporation’s (now
Northrop Grumman Systems Corporation’s) 7.125 percent Notes due 2011 and 7.75 percent
Debentures due 2031 (incorporated by reference to Exhibit 10.9 to Form 8-K filed April 17,
2001)

Indenture dated as of April 13, 1998, between Litton Industries, Inc. (predecessor-in-interest to
Northrop Grumman Systems Corporation) and The Bank of New York, as trustee, under which
its 6.75 percent Senior Debentures due 2018 were issued (incorporated by reference to
Exhibit 4.1 to the Form 10-Q of Litton Industries, Inc. for the quarter ended April 30, 1998, filed
June 15, 1998)

Supplemental Indenture with respect to Indenture dated April 13, 1998, dated as of April 3, 2001,
among Litton Industries, Inc. (predecessor-in-interest to Northrop Grumman Systems
Corporation), Northrop Grumman Corporation, Northrop Grumman Systems Corporation and
The Bank of New York, as trustee (incorporated by reference to Exhibit 4.5 to Form 10-Q for the
quarter ended March 31, 2001, filed May 10, 2001)

Supplemental Indenture with respect to Indenture dated April 13, 1998, dated as of December 20,
2002, among Litton Industries, Inc. (predecessor-in-interest to Northrop Grumman Systems
Corporation), Northrop Grumman Corporation, Northrop Grumman Systems Corporation and
The Bank of New York, as trustee (incorporated by reference to Exhibit 4(q) to Form 10-K for
the year ended December 31, 2002, filed March 24, 2003)

Third Supplemental Indenture dated as of March 30, 2011 by and among Northrop Grumman
Systems Corporation (successor-in-interest to Litton Industries, Inc.), The Bank of New York
Mellon (formerly known as The Bank of New York) as trustee, Titan II, Inc. (formerly known as
Northrop Grumman Corporation), and Titan Holdings II, L.P., to Indenture dated April 13, 1998,
between Litton Industries, Inc. and The Bank of New York, as trustee (incorporated by reference
to Exhibit 4.3 to Form 10-Q for the quarter ended March 31, 2011, filed April 27, 2011)

Fourth Supplemental Indenture dated as of March 30, 2011 by and among Northrop Grumman
Systems Corporation (successor-in-interest to Litton Industries, Inc.), The Bank of New York
Mellon (formerly known as The Bank of New York) as trustee, Titan Holdings II, L.P., and
Northrop Grumman Corporation (formerly known as New P., Inc.), to Indenture dated April 13,
1998, between Litton Industries, Inc. and The Bank of New York, as trustee (incorporated by
reference to Exhibit 4.4 to Form 10-Q for the quarter ended March 31, 2011, filed April 27,
2011)

Senior Indenture dated as of December 15, 1991, between Litton Industries, Inc. (predecessor-in-
interest to Northrop Grumman Systems Corporation) and The Bank of New York, as trustee,
under which its 7.75 percent and 6.98 percent debentures due 2026 and 2036 were issued, and
specimens of such debentures (incorporated by reference to Exhibit 4.1 to the Form 10-Q of
Litton Industries, Inc. for the quarter ended April 30, 1996, filed June 11, 1996)

Supplemental Indenture with respect to Indenture dated December 15, 1991, dated as of April 3,
2001, among Litton Industries, Inc. (predecessor-in-interest to Northrop Grumman Systems
Corporation), Northrop Grumman Corporation, Northrop Grumman Systems Corporation and
The Bank of New York, as trustee (incorporated by reference to Exhibit 4.7 to Form 10-Q for the
quarter ended March 31, 2001, filed May 10, 2001)

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NORTHROP GRUMMAN CORPORATION 

4(p)

4(q)

4(r)

4(s)

4(t)

4(u)

4(v)

4(w)

4(x)

Supplemental Indenture with respect to Indenture dated December 15, 1991, dated as of
December 20, 2002, among Litton Industries, Inc. (predecessor-in-interest to Northrop Grumman
Systems Corporation), Northrop Grumman Corporation, Northrop Grumman Systems
Corporation and The Bank of New York, as trustee (incorporated by reference to Exhibit 4(t) to
Form 10-K for the year ended December 31, 2002, filed March 24, 2003)

Third Supplemental Indenture dated as of March 30, 2011 by and among Northrop Grumman
Systems Corporation (successor-in-interest to Litton Industries, Inc.), The Bank of New York
Mellon (formerly known as The Bank of New York), as trustee, Titan II, Inc. (formerly known as
Northrop Grumman Corporation), and Titan Holdings II, L.P., to Senior Indenture dated
December 15, 1991, among Litton Industries, Inc., Northrop Grumman Corporation, Northrop
Grumman Systems Corporation and The Bank of New York, as trustee (incorporated by
reference to Exhibit 4.5 to Form 10-Q for the quarter ended March 31, 2011, filed April 27,
2011)

Fourth Supplemental Indenture dated as of March 30, 2011 by and among Northrop Grumman
Systems Corporation (successor-in-interest to Litton Industries, Inc.), The Bank of New York
Mellon (formerly known as The Bank of New York) as trustee, Titan Holdings II, L.P., and
Northrop Grumman Corporation (formerly known as New P, Inc.), to Senior Indenture dated
December 15, 1991, among Litton Industries, Inc., Northrop Grumman Corporation, Northrop
Grumman Systems Corporation and The Bank of New York, as trustee (incorporated by
reference to Exhibit 4.6 to Form 10-Q for the quarter ended March 31, 2011, filed April 27,
2011)

Indenture between TRW Inc. (predecessor-in-interest to Northrop Grumman Systems
Corporation) and Mellon Bank, N.A., as trustee, dated as of May 1, 1986 (incorporated by
reference to Exhibit 2 to the Form 8-A Registration Statement of TRW Inc. dated July 3, 1986)

First Supplemental Indenture between TRW Inc. (predecessor-in-interest to Northrop Grumman
Systems Corporation) and Mellon Bank, N.A., as trustee, dated as of August 24, 1989
(incorporated by reference to Exhibit 4(b) to Form S-3 Registration Statement No. 33-30350 of
TRW Inc.)

Fifth Supplemental Indenture between TRW Inc. (predecessor-in-interest to Northrop Grumman
Systems Corporation) and The Chase Manhattan Bank, as successor trustee, dated as of June 2,
1999 (incorporated by reference to Exhibit 4(f) to Form S-4 Registration Statement
No. 333-83227 of TRW Inc. filed July 20, 1999)

Ninth Supplemental Indenture dated as of December 31, 2009 among Northrop Grumman Space
& Mission Systems Corp. (predecessor–in-interest to Northrop Grumman Systems Corporation);
The Bank of New York Mellon, as successor trustee; Northrop Grumman Corporation; and
Northrop Grumman Systems Corporation (incorporated by reference to Exhibit 4(p) to Form 10-
K for the year ended December 31, 2009, filed February 9, 2010)

Tenth Supplemental Indenture dated as of March 30, 2011, by and among Northrop Grumman
Systems Corporation (successor-in-interest to Northrop Grumman Space & Mission Systems
Corp. and TRW, Inc.), The Bank of New York Mellon, as successor trustee to JPMorgan Chase
Bank and to Mellon Bank, N.A., Titan II Inc. (formerly known as Northrop Grumman
Corporation), and Titan Holdings II, L.P., to Indenture between TRW Inc. and Mellon Bank,
N.A., as trustee, dated as of May 1, 1986 (incorporated by reference to Exhibit 4.7 to Form 10-Q
for the quarter ended March 31, 2011, filed April 27, 2011)

Eleventh Supplemental Indenture dated as of March 30, 2011, by and among Northrop Grumman
Systems Corporation (successor-in-interest to Northrop Grumman Space & Mission Systems
Corp. and TRW Inc.), The Bank of New York Mellon, as successor trustee to JPMorgan Chase
Bank and to Mellon Bank, N.A., Titan Holdings II, L.P., and Northrop Grumman Corporation
(formerly known as New P, Inc.) to Indenture between TRW Inc. and Mellon Bank, N.A., as
trustee, dated as of May 1, 1986 (incorporated by reference to Exhibit 4.8 to Form 10-Q for the
quarter ended March 31, 2011, filed April 27, 2011)

4(y)

Indenture dated as of November 21, 2001, between Northrop Grumman Corporation and
JPMorgan Chase Bank, as trustee (incorporated by reference to Exhibit 4.1 to Form 8-K filed
November 21, 2001)

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NORTHROP GRUMMAN CORPORATION 

4(z)

4(aa)

4(bb)

4(cc)

4(dd)

4(ee)

4(ff)

4(gg)

4(hh)

10(a)

10(b)

10(c)

10(d)

First Supplemental Indenture dated as of July 30, 2009, between Northrop Grumman
Corporation and The Bank of New York Mellon, as successor trustee, to Indenture dated as of
November 21, 2001 (incorporated by reference to Exhibit 4(a) to Form 8-K filed July 30, 2009)

Form of Northrop Grumman Corporation’s 3.70 percent Senior Note due 2014 (incorporated by
reference to Exhibit 4(b) to Form 8-K filed July 30, 2009)

Form of Northrop Grumman Corporation’s 5.05 percent Senior Note due 2019 (incorporated by
reference to Exhibit 4(c) to Form 8-K filed July 30, 2009)

Second Supplemental Indenture dated as of November 8, 2010, between Northrop Grumman
Corporation and The Bank of New York Mellon, as successor trustee, to Indenture dated as of
November 21, 2001 (incorporated by reference to Exhibit 4(a) to Form 8-K filed November 8,
2010)

Form of Northrop Grumman Corporation’s 1.850% Senior Note due 2015 (incorporated by
reference to Exhibit 4(a) to Form 8-K filed November 8, 2010)

Form of Northrop Grumman Corporation’s 3.500% Senior Note due 2021 (incorporated by
reference to Exhibit 4(a) to Form 8-K filed November 8, 2010)

Form of Northrop Grumman Corporation’s 5.050% Senior Note due 2040 (incorporated by
reference to Exhibit 4(a) to Form 8-K filed November 8, 2010)

Third Supplemental Indenture dated as of March 30, 2011, by and among Titan II, Inc. (formerly
known as Northrop Grumman Corporation), The Bank of New York Mellon, as successor trustee
to JPMorgan Chase Bank, and Titan Holdings II, L.P., to Indenture dated as of November 21,
2001 between Northrop Grumman Corporation and JPMorgan Chase Bank, as trustee
(incorporated by reference to Exhibit 4.9 to Form 10-Q for the quarter ended March 31, 2011,
filed April 27, 2011)

Fourth Supplemental Indenture dated as of March 30, 2011, by and among Titan Holdings II,
L.P., The Bank of New York Mellon, as successor trustee to JPMorgan Chase Bank, and
Northrop Grumman Corporation (formerly known as New P., Inc.), to Indenture dated as of
November 21, 2001 between Northrop Grumman Corporation and JPMorgan Chase Bank, as
trustee (incorporated by reference to Exhibit 4.10 to Form 10-Q for the quarter ended March 31,
2011, filed April 27, 2011)

Second Amended and Restated Credit Agreement dated as of September 8, 2011, among
Northrop Grumman Corporation, as Borrower; Northrop Grumman Systems Corporation, as
Guarantor; the Lenders party thereto; JPMorgan Chase Bank, N.A., as Administrative Agent, an
Issuing Bank and a Swingline Lender; and Citibank, N.A., The Royal Bank of Scotland plc and
Wells Fargo Bank, National Association, as Syndication Agents (incorporated by reference to
Exhibit 10.1 to Form 8-K filed September 13, 2011)

364-Day Credit Agreement dated as of September 8, 2011, among Northrop Grumman
Corporation, as Borrower; Northrop Grumman Systems Corporation, as Guarantor; the Lenders
party thereto; JPMorgan Chase Bank, N.A., as Administrative Agent; and Citibank, N.A., The
Royal Bank of Scotland plc and Wells Fargo Bank, National Association, as Syndication Agents
(incorporated by reference to Exhibit 10.2 to Form 8-K filed September 13, 2011)

364-Day Credit Agreement dated as of September 4, 2012, among Northrop Grumman 
Corporation, as Borrower; Northrop Grumman Systems Corporation, as Guarantor; the Lenders 
party thereto; JPMorgan Chase Bank, N.A., as Administrative Agent; and Citibank, N.A., The 
Royal Bank of Scotland plc and Wells Fargo Bank, National Association, as Syndication Agents 
(incorporated by reference to Exhibit 10.1 to Form 8-K filed September 7, 2012)

Form of Guarantee dated as of April 3, 2001, by Northrop Grumman Corporation of the
indenture indebtedness issued by Litton Industries, Inc. (predecessor-in-interest to Northrop
Grumman Systems Corporation) (incorporated by reference to Exhibit 10.10 to Form 8-K filed
April 17, 2001)

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NORTHROP GRUMMAN CORPORATION 

10(e)

10(f)

+10(g)

+10(h)

+10(i)

+10(j)

Form of Guarantee dated as of April 3, 2001, by Northrop Grumman Corporation of Northrop
Grumman Systems Corporation indenture indebtedness (incorporated by reference to
Exhibit 10.11 to Form 8-K and filed April 17, 2001)

Form of Guarantee dated as of March 27, 2003, by Northrop Grumman Corporation, as
Guarantor, in favor of JP Morgan Chase Bank, as trustee, of certain debt securities issued by the
former Northrop Grumman Space & Mission Systems Corp. (predecessor-in-interest to Northrop
Grumman Systems Corporation) (incorporated by reference to Exhibit 4.2 to Form 10-Q for the
quarter ended March 31, 2003, filed May 14, 2003)

Consultant Contract dated June 28, 2010 between Ronald D. Sugar and Northrop Grumman
Corporation (incorporated by reference to Exhibit 10.1 to Form 10-Q for the quarter ended June
30, 2010, filed July 29, 2010)

Northrop Grumman Corporation 1993 Stock Plan for Non-Employee Directors (as Amended and
Restated January 1, 2010) (incorporated by reference to Exhibit 10.1 to Form 10-Q for the
quarter ended June 30, 2009, filed July 23, 2009)

Northrop Grumman Corporation Non-Employee Directors Equity Participation Plan (Amended 
and Restated January 1, 2008) (incorporated by reference to Exhibit 10(q) to Form 10-K for the 
year ended December 31, 2007, filed February 20, 2008)

Northrop Grumman 2001 Long-Term Incentive Stock Plan (As amended through December 19,
2007) (incorporated by reference to Exhibit A to the Company’s Proxy Statement on Schedule
14A for the 2008 Annual Meeting of Shareholders filed April 21, 2008)

(i)  Form of Notice of Non-Qualified Grant of Stock Options and Option Agreement 

(incorporated by reference to Exhibit 10.5 to Form S-4 Registration Statement 
No. 333-83672 filed March 4, 2002)

(ii)  Form of Agreement for 2005 Stock Options (officer) (incorporated by reference to Exhibit 
10(d)(v) to Form 10-K for the year ended December 31, 2004, filed March 4, 2005)
(iii)  Form of letter from Northrop Grumman Corporation regarding Stock Option Retirement 

Enhancement (incorporated by reference to Exhibit 10.2 to Form 8-K dated March 14, 2005 
and filed March 15, 2005)

(iv)  Form of Agreement for 2006 Stock Options (officer) (incorporated by reference to 

Exhibit 10(d)(viii) to Form 10-K for the year ended December 31, 2005, filed February 17, 
2006)

(v)  Form of Agreement for 2007 Stock Options (officers) (incorporated by reference to 

Exhibit 10(2)(ii) to Form 10-Q for the quarter ended March 31, 2007, filed April 24, 2007)

(vi)  Form of Agreement for 2008 Stock Options (officer) (incorporated by reference to 

Exhibit 10(4)(i) to Form 10-Q for the quarter ended March 31, 2008, filed April 24, 2008)

(vii)  Form of Agreement for 2009 Stock Options (incorporated by reference to Exhibit 10.2(i) to 

Form 10-Q for the quarter ended March 31, 2009, filed April 22, 2009)

(viii) Form of Agreement for 2010 Restricted Performance Stock Rights (incorporated by 

reference to Exhibit 10.2 to Form 10-Q for the quarter ended March 31, 2010, filed April 28, 
2010)

(ix)  Form of Agreement for 2010 Stock Options (incorporated by reference to Exhibit 10.3 to 

Form 10-Q for the quarter ended March 31, 2010, filed April 28, 2010)

(x)  Form of Agreement for 2010 Restricted Stock Rights (incorporated by reference to Exhibit 

10.4 to Form 10-Q for the quarter ended March 31, 2010, filed April 28, 2010)

(xi)  Form of Agreement for 2011 Stock Options granted under the Northrop Grumman 2001 

Long-Term Incentive Stock Plan (As amended through December 19, 2007) (incorporated 
by reference to Exhibit 10.1 of Form 8-K filed February 22, 2011)

(xii)  Form of Agreement for 2011 Restricted Performance Stock Rights granted under the 
Northrop Grumman 2001 Long-Term Incentive Stock Plan (As amended through 
December 19, 2007) (incorporated by reference to Exhibit 10.2 of Form 8-K filed 
February 22, 2011)

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NORTHROP GRUMMAN CORPORATION 

(xvi) Form of Agreement for 2011 Restricted Stock Rights granted under the Northrop Grumman 

2001 Long-Term Incentive Stock Plan (As amended through December 19, 2007) 
(incorporated by reference to Exhibit 10.3 of Form 8-K filed February 22, 2011)

(xvii) Terms and Conditions Applicable to Special 2011 Restricted Stock Rights granted to Gary 

W. Ervin under the Northrop Grumman 2001 Long-Term Incentive Stock Plan (as amended 
through December 19, 2007) (incorporated by reference to Exhibit 10.4 of Form 8-K filed 
February 22, 2011)

+10(k)

Northrop Grumman 2011 Long-Term Incentive Stock Plan (incorporated by reference to
Exhibit A to the Company’s Proxy Statement on Schedule 14A for the 2011 Annual Meeting of
Shareholders filed April 8, 2011)

(i)  Summary of Non-Employee Director Award Terms Under the 2011 Long-Term Incentive 
Stock Plan effective December 21, 2011 (incorporated by reference to Exhibit 10(j)(ii) to 
Form 10-K for the year ended December 31, 2011, filed February 7, 2012)

(ii)  Northrop Grumman Corporation Equity Grant Program for Non-Employee Directors under 
the Northrop Grumman 2011 Long-Term Incentive Stock Plan, effective January 1, 2012 
(incorporated by reference to Exhibit 10.3 to Form 10-Q for the quarter ended June 30, 
2012, filed July 24, 2012)

(iii) Grant Certificate Specifying the Terms and Conditions Applicable to 2012 Restricted Stock 
Rights Granted Under the 2011 Long-Term Incentive Stock Plan (incorporated by reference 
to Exhibit 10.1 to Form 8-K filed February 17, 2012)

(iv)  Grant Certificate Specifying the Terms and Conditions Applicable to 2012 Restricted 
Performance Stock Rights Granted Under the 2011 Long-Term Incentive Stock Plan 
(incorporated by reference to Exhibit 10.2 to Form 8-K filed February 17, 2012)

+*10(l) Northrop Grumman Supplemental Plan 2 (Amended and Restated Effective as of January 1,

2013)

(i)  Appendix B to the Northrop Grumman Supplemental Plan 2: ERISA Supplemental Program 

2 (Amended and Restated Effective as of January 1, 2011) dated June 27, 2011 
(incorporated by reference to Exhibit 10.9 to Form 10-Q for the quarter ended June 30, 
2011, filed July 27, 2011)

(ii)  Appendix F to the Northrop Grumman Supplemental Plan 2: CPC Supplemental Executive 

Retirement Program (Amended and Restated Effective as of January 1, 2012)

(iii) Appendix G to the Northrop Grumman Supplemental Plan 2: Officers Supplemental 

Executive Retirement Program (Amended and Restated Effective as of January 1, 2012)

+*10(m) Northrop Grumman ERISA Supplemental Plan (Amended and Restated Effective as of January

1, 2013)

+*10(n) Northrop Grumman Supplementary Retirement Income Plan (formerly TRW Supplementary

Retirement Income Plan) (Amended and Restated Effective January 1, 2013)

+*10(o) Northrop Grumman Electronic Systems Executive Pension Plan (Amended and Restated

Effective as of January 1, 2013)

+10(p)

+10(q)

Severance Plan for Elected and Appointed Officers of Northrop Grumman Corporation
(Amended and Restated Effective July 20, 2012) (incorporated by reference to Exhibit 10.4 to
Form 10-Q for the quarter ended September 30, 2012, filed October 23, 2012)

Non-Employee Director Compensation Term Sheet, effective as of April 1, 2011 (replacing
previously filed Exhibit 10.17 to Form 10-Q for the quarter ended June 30, 2011, filed July 27,
2011) (incorporated by reference to Exhibit 10.4 to Form 10-Q for the quarter ended September
30, 2011, filed October 26, 2011)

+10(r)

Non-Employee Director Compensation Term Sheet, effective May 15, 2012 (incorporated by 
reference to Exhibit 10.2 to Form 10-Q for the quarter ended June 30, 2012, filed July 24, 2012)

-87-

 
 
 
 
 
 
 
 
 
 
 
 
 
NORTHROP GRUMMAN CORPORATION 

+10(s)

Form of Indemnification Agreement between Northrop Grumman Corporation and its directors
and executive officers (incorporated by reference to Exhibit 10.3 to Form 10-Q for the quarter
ended March 31, 2012, filed April 24, 2012)

+*10(t) Northrop Grumman Deferred Compensation Plan (Amended and Restated Effective as of

January 1, 2013)

+10(u)

+10(v)

The 2002 Incentive Compensation Plan of Northrop Grumman Corporation, As Amended and
Restated effective January 1, 2009 (incorporated by reference to Exhibit 10.6 to Form 10-Q for
the quarter ended March 31, 2009, filed April 22, 2009)

Northrop Grumman 2006 Annual Incentive Plan and Incentive Compensation Plan (for Non-
Section 162(m) Officers), as amended and restated effective January 1, 2009 (incorporated by
reference to Exhibit 10.7 to Form 10-Q for the quarter ended March 31, 2009, filed April 22,
2009)

+*10(w) Northrop Grumman Savings Excess Plan (Amended and Restated Effective as of January 1,

2013)

+*10(x) Northrop Grumman Officers Retirement Account Contribution Plan (Amended and Restated

Effective as of January 1, 2013)

+10(y)

Compensatory Arrangements of Certain Officers (incorporated by reference to Item 5.02(e) of
Form 8-K filed February 17, 2012)

+10(z)

Offering letter dated February 1, 2007 from Northrop Grumman Corporation to James F. Palmer
relating to position of Corporate Vice President and Chief Financial Officer (incorporated by
reference to Exhibit 10(3) to Form 10-Q for the quarter ended March 31, 2007, filed April 24,
2007), as amended by Amendment to Letter Agreement between Northrop Grumman
Corporation and James F. Palmer dated December 17, 2008 (incorporated by reference to Exhibit
10.3 to Form 8-K filed December 19, 2008)

+10(aa) Northrop Grumman Supplemental Retirement Replacement Plan, as Restated, dated January 1,
2008 between Northrop Grumman Corporation and James F. Palmer (incorporated by reference
to Exhibit 10.4 to Form 8-K filed December 19, 2008)

(i) First Amendment to the Northrop Grumman Supplemental Retirement Replacement
Plan, dated October 25, 2011 (incorporated by reference to Exhibit 10(bb)(i) to
Form 10-K for the year ended December 31, 2011, filed February 7, 2012)

+10(bb) Northrop Grumman Corporation Special Officer Retiree Medical Plan (Amended and Restated

Effective January 1, 2008) (incorporated by reference to Exhibit 10(2) to Form 10-Q for the
quarter ended March 31, 2008, filed April 24, 2008)

+10(cc) Executive Life Insurance Policy (incorporated by reference to Exhibit 10(gg) to Form 10-K for

the year ended December 31, 2004, filed March 4, 2005)

+10(dd) Executive Accidental Death, Dismemberment and Plegia Insurance Policy Terms applicable to

Executive Officers dated January 1, 2009 (incorporated by reference to Exhibit 10.3 to Form 10-
Q for the quarter ended March 31, 2009, filed April 22, 2009)

+10(ee) Executive Long-Term Disability Insurance Policy as amended by Amendment No. 2 dated

June 19, 2008 and effective as of October 4, 2007 (incorporated by reference to Exhibit 10(2) to
Form 10-Q for the quarter ended June 30, 2008, filed July 29, 2008)

+10(ff)

Executive Dental Insurance Policy Group Numbers 5134 and 5135 (incorporated by reference to
Exhibit 10(m) to Form 10-K for the year ended December 31, 1995, filed February 22, 1996), as
amended by action of the Compensation Committee of the Board of Directors of Northrop
Grumman Corporation effective July 1, 2009 (incorporated by reference to Item 5.02(e) of Form
8-K filed May 26, 2009)

-88-

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
NORTHROP GRUMMAN CORPORATION 

+10(gg) Group Personal Excess Liability Policy (incorporated by reference to Exhibit 10.15 to Form 10-

Q for the quarter ended June 30, 2011, filed July 27, 2011)

+10(hh) Letter dated December 16, 2009 from Northrop Grumman Corporation to Wesley G. Bush

regarding compensation effective January 1, 2010 (incorporated by reference to Exhibit 10.2 to
Form 8-K filed December 21, 2009)

+10(ii)

+10(jj)

Policy Regarding the Recoupment of Certain Performance-Based Compensation Payments dated
March 1, 2010 (incorporated by reference to Exhibit 10.5 to Form 10-Q for the quarter ended
March 31, 2010, filed April 28, 2010)

Retirement and Separation Agreement dated July 23, 2012 between Northrop Grumman Systems 
Corporation and Gary W. Ervin (incorporated by reference to Exhibit 10.4 to Form 10-Q for the 
quarter ended June 30, 2012, filed July 24, 2012)

*12(a)

Computation of Ratio of Earnings to Fixed Charges

*21

*23

*24

*31.1

*31.2

Subsidiaries

Consent of Independent Registered Public Accounting Firm

Power of Attorney

Rule 13a-15(e)/15d-15(e) Certification of Wesley G. Bush (Section 302 of the Sarbanes-Oxley
Act of 2002)

Rule 13a-15(e)/15d-15(e) Certification of James F. Palmer (Section 302 of the Sarbanes-Oxley
Act of 2002)

**32.1

Certification of Wesley G. Bush pursuant to 18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002

**32.2

Certification of James F. Palmer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002

*101

+

*

**

Northrop Grumman Corporation Annual Report on Form 10-K for the fiscal year ended 
December 31, 2012, formatted in XBRL (Extensible Business Reporting Language); (i) the 
Consolidated Statements of Earnings and Comprehensive Income, (ii) Consolidated Statements 
of Financial Position, (iii) Consolidated Statements of Cash Flows, (iv) Consolidated Statements 
of Changes in Shareholders’ Equity, and (v) Notes to Consolidated Financial Statements

Management contract or compensatory plan or arrangement

Filed with this Report

Furnished with this Report

-89-

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
NORTHROP GRUMMAN CORPORATION 

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly 
caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, on the 4th day of 
February 2013.

SIGNATURES

NORTHROP GRUMMAN CORPORATION

By:

/s/ Kenneth L. Bedingfield
Kenneth L. Bedingfield
Corporate Vice President, Controller, and Chief
Accounting Officer
(Principal Accounting Officer)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed on behalf of the 
registrant this the 4th day of February 2013, by the following persons and in the capacities indicated.

Signature

Wesley G. Bush*

James F. Palmer*

Kenneth L. Bedingfield

Victor H. Fazio*

Donald E. Felsinger*

Stephen E. Frank *

Bruce S. Gordon*

Madeleine A. Kleiner*

Karl J. Krapek*

Richard B. Myers*

Aulana L. Peters*

Gary Roughead*

Thomas M. Schoewe*

Kevin W. Sharer*

*By:

/s/ Jennifer C. McGarey
Jennifer C. McGarey
Corporate Vice President and Secretary
Attorney-in-Fact
pursuant to a power of attorney

Title

Chairman, Chief Executive Officer and President (Principal
Executive Officer), and Director

Corporate Vice President and Chief Financial Officer (Principal
Financial Officer)

Corporate Vice President, Controller and Chief Accounting
Officer

Director

Director

Director

Director

Director

Director

Director

Director

Director

Director

Director

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[THIS PAGE INTENTIONALLY LEFT BLANK]

GENERAL INFORMATION

NORTHROP GRUMMAN 
ON THE INTERNET
Information on Northrop Grumman
and its sectors, including press
releases and this annual report,
can be found on our home page at
www.northropgrumman.com

ANNUAL MEETING OF 
SHAREHOLDERS
Wednesday, May 15, 2013
8 a.m. EDT
Northrop Grumman Corporation 
Corporate Office
2980 Fairview Park Drive
Falls Church, Virginia 22042

INDEPENDENT AUDITORS
Deloitte & Touche LLP

STOCK LISTING
Northrop Grumman Corporation
common stock is listed on the
New York Stock Exchange (trading
symbol NOC).

TRANSFER AGENT, 
REGISTRAR AND DIVIDEND 
PAYING AGENT
Computershare
P.O. Box 43078
Providence, RI 02940
(877) 498-8861
www.computershare.com

INVESTOR RELATIONS
Securities analysts, institutional investors 
and portfolio managers should contact 
Northrop Grumman Investor Relations 
at (703) 280-2268 or send an e-mail to 
investors@ngc.com

MEDIA RELATIONS
Inquiries from the media should
be directed to Northrop Grumman
Corporate Communications at
(703) 280-2720 or send an e-mail to
newsbureau@ngc.com

ELECTRONIC DELIVERY
OF FUTURE SHAREHOLDER
COMMUNICATIONS
If you would like to help conserve
natural resources and reduce the
costs incurred by Northrop Grumman
Corporation in mailing proxy materials,
you can consent to receiving all
future proxy statements, proxy cards
and annual reports electronically
via e-mail or the Internet. To sign
up for electronic delivery, registered
shareholders may log on to
www.computershare.com/investor

DIVIDEND REINVESTMENT PROGRAM
Registered owners of Northrop
Grumman Corporation common
stock are eligible to participate in
the company’s Automatic Dividend
Reinvestment Plan. Under this plan,
shares are purchased with reinvested
cash dividends and voluntary cash
payments of up to a specified amount
per calendar year.

For information on the company’s 
Dividend Reinvestment Service, 
contact our Transfer Agent and 
Registrar, Computershare.

COMPANY SHAREHOLDER SERVICES
Shareholders with questions regarding 
stock ownership should contact 
our Transfer Agent and Registrar, 
Computershare. Stock ownership 
inquiries may also be directed to 
Northrop Grumman’s Shareholder 
Services via e-mail at sharesrv@ngc.com

DUPLICATE MAILINGS
Stockholders with more than one account 
or who share the same address with 
another stockholder may receive more 
than one annual report. To eliminate 
duplicate mailings or to consolidate 
accounts, contact Computershare.  
Separate dividend checks and proxy 
materials will continue to be sent for each 
account on our records.

NORTHROP GRUMMAN 2012 ANNUAL REPORT2980 Fairview Park Drive

Falls Church, VA 22042-4511

www.northropgrumman.com