UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM10-Q
 
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
For the Quarterly Period Ended SeptemberJune 30, 20192020
or
 
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
Commission File Number 1-16411
NORTHROP GRUMMAN CORPORATION
(Exact name of registrant as specified in its charter)
Delaware 80-0640649
(State or other jurisdiction of
incorporation or organization)
 
(I.R.S. Employer
Identification No.)
    
2980 Fairview Park Drive  
Falls Church,Virginia 22042
(Address of principal executive offices) (Zip Code)
(703) 280-2900
(Registrant’s telephone number, including area code)
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common StockNOCNew York Stock Exchange
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 for 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 every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).
Yes ☒    No ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act:
Large Accelerated Filer ☒     Accelerated Filer ☐
Non-accelerated Filer ☐    Smaller Reporting Company ☐                
Emerging Growth Company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).
Yes ☐    No ☒
Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.
As of October 21, 2019, 168,532,761July 27, 2020, 166,714,063 shares of common stock were outstanding.



NORTHROP GRUMMAN CORPORATION                        

TABLE OF CONTENTS
  Page
  
Item 1. 
 
 
 
 
  
 
 
 
 
 
 
Item 2. 
 
 
 
 
 
 
 
 
 
 
Item 3.
Item 4.
   
  
Item 1.
Item 1A.
Item 2.
Item 5.
Item 6.
 

i


NORTHROP GRUMMAN CORPORATION                        

PART I. FINANCIAL INFORMATION
Item 1.    Financial Statements
CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS AND COMPREHENSIVE INCOME
(Unaudited)
Three Months Ended September 30
Nine Months Ended September 30Three Months Ended June 30
Six Months Ended June 30
$ in millions, except per share amounts2019
2018
2019
20182020
2019
2020
2019
Sales





















Product$5,997

$5,614

$17,605

$14,693
$6,482

$5,880

$12,658

$11,608
Service2,478

2,471

7,515

7,246
2,402

2,576

4,846

5,037
Total sales8,475

8,085

25,120

21,939
8,884

8,456

17,504

16,645
Operating costs and expenses





















Product4,777

4,233

13,955

11,200
5,127

4,661

10,079

9,178
Service1,971

1,863

6,012

5,635
1,931

2,065

3,877

4,041
General and administrative expenses776

817

2,320

2,267
832

784

1,620

1,544
Operating income951

1,172

2,833

2,837
994

946

1,928

1,882
Other (expense) income





















Interest expense(123)
(133)
(398)
(420)(154)
(137)
(279)
(275)
FAS (non-service) pension benefit200

270

600

782
303

200

605

400
Other, net27

55

82

140
60

19

2

55
Earnings before income taxes1,055

1,364

3,117

3,339
1,203

1,028

2,256

2,062
Federal and foreign income tax expense122

120

460

466
198

167

383

338
Net earnings$933

$1,244

$2,657

$2,873
$1,005

$861

$1,873

$1,724

Basic earnings per share$5.52

$7.15

$15.67

$16.48
$6.02

$5.07

$11.20

$10.15
Weighted-average common shares outstanding, in millions169.1

174.1

169.6

174.3
166.9

169.7

167.3

169.9
Diluted earnings per share$5.49

$7.11

$15.60

$16.40
$6.01

$5.06

$11.16

$10.11
Weighted-average diluted shares outstanding, in millions169.9

174.9

170.3

175.2
167.3

170.3

167.9

170.5

Net earnings (from above)$933

$1,244

$2,657

$2,873
$1,005

$861

$1,873

$1,724
Other comprehensive loss              
Change in unamortized prior service credit, net of tax(12) (15) (35) (45)(11) (12) (21) (23)
Change in cumulative translation adjustment and other, net
 (3) 
 (9)10
 (4) 1
 
Other comprehensive loss, net of tax(12) (18) (35) (54)(1) (16) (20) (23)
Comprehensive income$921
 $1,226
 $2,622
 $2,819
$1,004
 $845
 $1,853
 $1,701
The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

-1-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION
(Unaudited)
$ in millions, except par valueJune 30,
2020
 December 31,
2019
Assets   
Cash and cash equivalents$4,178
 $2,245
Accounts receivable, net1,989
 1,326
Unbilled receivables, net5,460
 5,334
Inventoried costs, net832
 783
Prepaid expenses and other current assets720
 997
Total current assets13,179
 10,685
Property, plant and equipment, net of accumulated depreciation of $6,103 for 2020 and $5,850 for 20197,063
 6,912
Operating lease right-of-use assets1,528
 1,511
Goodwill18,707
 18,708
Intangible assets, net909
 1,040
Deferred tax assets346
 508
Other non-current assets1,743
 1,725
Total assets$43,475
 $41,089
    
Liabilities   
Trade accounts payable$2,006
 $2,226
Accrued employee compensation1,614
 1,865
Advance payments and billings in excess of costs incurred2,179
 2,237
Other current liabilities3,928
 3,106
Total current liabilities9,727
 9,434
Long-term debt, net of current portion of $1,803 for 2020 and $1,109 for 201914,259
 12,770
Pension and other postretirement benefit plan liabilities6,582
 6,979
Operating lease liabilities1,333
 1,308
Other non-current liabilities1,862
 1,779
Total liabilities33,763
 32,270
    
Commitments and contingencies (Note 6)

 

    
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: 2020—166,708,207 and 2019—167,848,424167
 168
Paid-in capital10
 
Retained earnings9,652
 8,748
Accumulated other comprehensive loss(117) (97)
Total shareholders’ equity9,712
 8,819
Total liabilities and shareholders’ equity$43,475
 $41,089
$ in millions, except par valueSeptember 30,
2019
 December 31,
2018
Assets   
Cash and cash equivalents$1,127
 $1,579
Accounts receivable, net2,111
 1,448
Unbilled receivables, net5,777
 5,026
Inventoried costs, net810
 654
Prepaid expenses and other current assets1,011
 973
Total current assets10,836
 9,680
Property, plant and equipment, net of accumulated depreciation of $5,709 for 2019 and $5,369 for 20186,611
 6,372
Operating lease right-of-use assets1,511
 
Goodwill18,707
 18,672
Intangible assets, net1,123
 1,372
Deferred tax assets83
 94
Other non-current assets1,682
 1,463
Total assets$40,553
 $37,653
    
Liabilities   
Trade accounts payable$2,021
 $2,182
Accrued employee compensation1,744
 1,676
Advance payments and billings in excess of costs incurred2,127
 1,917
Other current liabilities2,524
 2,499
Total current liabilities8,416
 8,274
Long-term debt, net of current portion of $45 for 2019 and $517 for 201813,826
 13,883
Pension and other postretirement benefit plan liabilities5,431
 5,755
Operating lease liabilities1,304
 
Deferred tax liabilities111
 108
Other non-current liabilities1,734
 1,446
Total liabilities30,822
 29,466
    
Commitments and contingencies (Note 7)

 

    
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: 2019—168,701,653 and 2018—170,607,336169
 171
Paid-in capital
 
Retained earnings9,649
 8,068
Accumulated other comprehensive loss(87) (52)
Total shareholders’ equity9,731
 8,187
Total liabilities and shareholders’ equity$40,553
 $37,653
The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

-2-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited)
Nine Months Ended September 30Six Months Ended June 30
$ in millions2019 20182020 2019
Operating activities      
Net earnings$2,657
 $2,873
$1,873
 $1,724
Adjustments to reconcile to net cash provided by operating activities:      
Depreciation and amortization737
 534
605
 606
Non-cash lease expense187
 
Stock-based compensation93
 82
36
 55
Deferred income taxes24
 275
169
 48
Changes in assets and liabilities:      
Accounts receivable, net(663) (52)(663) (384)
Unbilled receivables, net(778) (898)(126) (658)
Inventoried costs, net(156) (102)(49) (156)
Prepaid expenses and other assets(81) (109)(16) (48)
Accounts payable and other liabilities320
 (125)(374) (367)
Income taxes payable, net(34) (114)330
 194
Retiree benefits(422) (847)(473) (285)
Other, net(51) (67)32
 (35)
Net cash provided by operating activities1,833
 1,450
1,344
 694
      
Investing activities      
Acquisition of Orbital ATK, net of cash acquired
 (7,657)
Capital expenditures(793) (786)(541) (536)
Other, net8
 23
2
 1
Net cash used in investing activities(785) (8,420)(539) (535)
      
Financing activities      
Payments of long-term debt(500) (2,276)
Net payments to credit facilities(31) (314)
Net proceeds from issuance of long-term debt2,239
 
Payments to credit facilities(13) (20)
Net borrowings on commercial paper201
 499

 101
Common stock repurchases(444) (209)(490) (231)
Cash dividends paid(658) (616)(469) (435)
Payments of employee taxes withheld from share-based awards(63) (84)(64) (63)
Other, net(5) (27)(75) (2)
Net cash used in financing activities(1,500) (3,027)
Decrease in cash and cash equivalents(452) (9,997)
Net cash provided by (used in) financing activities1,128
 (650)
Increase (decrease) in cash and cash equivalents1,933
 (491)
Cash and cash equivalents, beginning of year1,579
 11,225
2,245
 1,579
Cash and cash equivalents, end of period$1,127
 $1,228
$4,178
 $1,088
The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

-3-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS’ EQUITY
(Unaudited)
Three Months Ended September 30 Nine Months Ended September 30Three Months Ended June 30 Six Months Ended June 30
$ in millions, except per share amounts2019 2018 2019 20182020 2019 2020 2019
Common stock              
Beginning of period$169
 $174
 $171
 $174
$167
 $170
 $168
 $171
Common stock repurchased
 (1) (2) (1)
 (1) (1) (2)
Shares issued for employee stock awards and options
 1
 
 1
End of period169
 174
 169
 174
167
 169
 167
 169
Paid-in capital              
Beginning of period
 
 
 44

 
 
 
Common stock repurchased
 
 
 (34)
Stock compensation
 
 
 (10)10
 
 10
 
End of period
 
 
 
10
 
 10
 
Retained earnings              
Beginning of period9,120
 8,066
 8,068
 6,913
9,011
 8,628
 8,748
 8,068
Impact from adoption of ASU 2018-02 and ASU 2016-01
 
 
 (21)
Common stock repurchased(215) (164) (449) (179)(131) (172) (479) (234)
Net earnings933
 1,244
 2,657
 2,873
1,005
 861
 1,873
 1,724
Dividends declared(226) (211) (658) (616)(242) (226) (465) (432)
Stock compensation37
 26
 31
 (9)9
 29
 (36) (6)
Other
 
 11
 
End of period9,649
 8,961
 9,649
 8,961
9,652
 9,120
 9,652
 9,120
Accumulated other comprehensive (loss) income       
Accumulated other comprehensive loss       
Beginning of period(75) (14) (52) 1
(116) (59) (97) (52)
Impact from adoption of ASU 2018-02 and ASU 2016-01
 
 
 21
Other comprehensive loss, net of tax(12) (18) (35) (54)(1) (16) (20) (23)
End of period(87) (32) (87) (32)(117) (75) (117) (75)
Total shareholders’ equity$9,731
 $9,103
 $9,731
 $9,103
$9,712
 $9,214
 $9,712
 $9,214
Cash dividends declared per share$1.32
 $1.20
 $3.84
 $3.50
$1.45
 $1.32
 $2.77
 $2.52
The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

-4-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
1.    BASIS OF PRESENTATION
Principles of Consolidation and Reporting
These unaudited condensed consolidated financial statements (the “financial statements”) include the accounts of Northrop Grumman Corporation and its subsidiaries and joint ventures or other investments for which we consolidate the financial results (herein referred to as “Northrop Grumman,” the “company,” “we,” “us,” or “our”). Material intercompanyIntercompany 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.
On June 6, 2018 (the “Merger date”), the company completed its previously announced acquisition of Orbital ATK, Inc. (“Orbital ATK”) (the “Merger”). On the Merger date, Orbital ATK became a wholly-owned subsidiary of the company and its name was changed to Northrop Grumman Innovation Systems, Inc., which we established as a new, fourth business sector (“Innovation Systems”). The operating results of Innovation Systems subsequent to the Merger date have been included in the company’s unaudited condensed consolidated results of operations. See Note 2 for further information regarding the Merger.
At September 30, 2019, the company was aligned in four operating sectors: Aerospace Systems, Innovation Systems, Mission Systems and Technology Services. In September 2019, the company announced changes effective January 1, 2020, which are intended to better align the company’s broad portfolio to serve its customers’ needs. There will be four sectors: Aeronautics Systems, Defense Systems, Mission Systems and Space Systems. This realignment is not reflected in any of the accompanying financial information.
These financial statements are prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP” or “FAS”) and in accordance with the rules of the Securities and Exchange Commission (SEC) for interim reporting. The financial statements include adjustments of a normal recurring nature considered necessary by management for a fair presentation of the company’s unaudited condensed consolidated financial position, results of operations and cash flows.
Effective January 1, 2020, the company reorganized its operating sectors to better align the company’s broad portfolio to serve its customers’ needs. The four new sectors, which also comprise our reportable segments, are Aeronautics Systems, Defense Systems, Mission Systems and Space Systems.
Beginning in the second quarter of 2020, the company no longer considers certain unallowable costs and environmental matters that are principally managed at the corporate office as part of management’s evaluation of segment operating performance. As a result, certain unallowable compensation and other costs, which were previously included in segment operating results, are now reported in Unallocated corporate expense within operating income. In addition, certain accrued and deferred costs, as well as unallowable costs, if any, associated with certain environmental matters that were previously reflected in segment assets and operating results are now reflected in corporate assets and Unallocated corporate expense within operating income. The impact of these changes are reflected in the amounts in this Form 10-Q. See Note 9 and Part II, Item 5 for further information regarding the impact of these changes on the company’s current and prior period segment operating income.
The results reported in these financial statements are not necessarily indicative of results that may be expected for the entire year. These financial statements should be read in conjunction with the information contained in the company’s 20182019 Annual Report on Form 10-K.10-K, the Form 8-K that we filed with the SEC on April 29, 2020, which recasts the disclosures in certain portions of the 2019 Annual Report on Form 10-K to reflect changes in the company’s reportable segments, and the Quarterly Report on Form 10-Q for the quarter ended March 31, 2020.
The quarterly information is labeled using a calendar convention; that is, first quarter is consistently labeled as ending on March 31, second quarter as ending on June 30 and third quarter as ending on September 30. It is the company’s long-standing practice to establish actual interim closing dates using a “fiscal” calendar, in which we close our books on a Friday near these quarter-end dates in order to normalize the potentially disruptive effects of quarterly closings on business processes. This practice is only used at interim periods within a reporting year.
As previously announced, effective January 1, 2019, we adopted Accounting Standards Codification (ASC) Topic 842, Leases, using the optional transition method to apply the standard through a cumulative effect adjustment in the period of adoption. The adoption of this standard is reflected in the amounts and disclosures set forth in this Form 10-Q.
Accounting Estimates
Preparation of the financial statements 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 sales 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.
Revenue Recognition
The majority of our sales are derived from long-term contracts with the U.S. government for the production of goods, the provision of services, or a combination of both. The company classifies sales as product or service based on the predominant attributes of each performance obligation.
The company recognizes revenue for each separately identifiable performance obligation in a contract representing a promise to transfer a distinct good or service to a customer. In most cases, goods and services provided under the company’s contracts are accounted for as single performance obligations due to the complex and integrated nature of our products and services. These contracts generally require significant integration of a group of goods and/or services to deliver a combined output. In some contracts, the company provides multiple distinct goods or services

-5-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

to a customer, most commonly when a contract covers multiple phases of the product lifecycle (e.g., development, production, sustainment, etc.). In those cases, the company accounts for the distinct contract deliverables as separate performance obligations and allocates the transaction price to each performance obligation based on its relative standalone selling price, which is generally estimated using a cost plus a reasonable margin approach. Warranties are provided on certain contracts, but do not typically provide for services beyond standard assurances and are therefore not considered to be separate performance obligations. Assets recognized from the costs to obtain or fulfill a contract are not material.
Contracts are often modified for changes in contract specifications or requirements, which may result in scope and/or price changes. Most of the company’s contract modifications are for goods or services that are not distinct in the context of the contract and are therefore accounted for as part of the original performance obligation through a cumulative estimate-at-completion (EAC) adjustment.
The company recognizesWe recognize revenue as control is transferred to the customer, either over time or at a point in time. In general, our U.S. government contracts contain termination for convenience and/or other clauses that generally provide the customer rights to goods produced and/or in-process. Similarly, our non-U.S. government contracts generally contain contractual termination clauses or entitle the company to payment for work performed to date for goods and services that do not have an alternative use. As control is effectively transferred while we perform on our contracts, we generally recognize revenue over time using the cost-to-cost method (cost incurred relative to total cost estimated at completion) as the company believes this represents the most appropriate measurement towards satisfaction of itsour performance obligations. Revenue for contracts in which the control of goods produced does not transfer until delivery to the customer is recognized at a point in time (i.e., typically upon delivery).
Contract Estimates
Use of the cost-to-cost method requires us to make reasonably dependable estimates regarding the revenue and cost associated with the design, manufacture and delivery of our products and services. The company estimates profit on

-5-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

these contracts as the difference between total estimated sales and total estimated cost at completion and recognizes that profit as costs are incurred. Significant judgment is used to estimate total sales and cost at completion.
Contract sales may include estimates of variable consideration, including cost or performance incentives (such as award and incentive fees), contract claims and requests for equitable adjustment (REAs). Variable consideration is included in total estimated sales to the extent it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. We estimate variable consideration as the most likely amount to which we expect to be entitled.
We recognize changes in estimated contract sales or costs and the resulting changes in contract profit on a cumulative basis. Cumulative EAC adjustments represent the cumulative effect of the changes on current and prior periods; sales and operating margins in future periods are recognized as if the revised estimates had been used since contract inception. If it is determined that a loss is expected to result on an individual performance obligation, the entire amount of the estimable future loss, including an allocation of general and administrative (G&A) costs, is charged against income in the period the loss is identified. Each loss provision is first offset against costs included in Unbilled receivables or Inventoried costs; remaining amounts are reflected in Other current liabilities.
The following table presents the effect of aggregate net EAC adjustments:
Three Months Ended September 30 Nine Months Ended September 30Three Months Ended June 30 Six Months Ended June 30
$ in millions, except per share data2019 2018 2019 20182020 2019 2020 2019
Revenue$142
 $149
 $462
 $438
$125
 $154
 $261
 $320
Operating income125
 149
 421
 408
112
 158
 236
 296
Net earnings(1)
99
 117
 333
 322
88
 125
 186
 234
Diluted earnings per share(1)
0.58
 0.67
 1.96
 1.84
0.53
 0.73
 1.11
 1.37
(1) 
Based on a 21 percent statutory tax rate.
EAC adjustments on a single performance obligation can have a material effect on the company’s financial statements. When such adjustments occur, we generally disclose the nature, underlying conditions and financial impact of the adjustments. No such adjustments were material to the financial statements during the three months ended SeptemberJune 30, 20192020 and 2018.

-6-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

2019.
Backlog
Backlog represents the future sales we expect to recognize on firm orders received by the company and is equivalent to the company’s remaining performance obligations at the end of each period. It comprises both funded backlog (firm orders for which funding is authorized and appropriated) and unfunded backlog. Unexercised contract options and indefinite delivery indefinite quantity (IDIQ) contracts are not included in backlog until the time thean option or IDIQ task order is exercised or awarded.
Company backlog as of SeptemberJune 30, 20192020 was $65.0$70.0 billion. We expect to recognize approximately 40 percent and 65 percent of our SeptemberJune 30, 20192020 backlog as revenue over the next 12 and 24 months, respectively, with the remainder to be recognized thereafter.
Contract Assets and Liabilities
For each of the company’s contracts, the timing of revenue recognition, customer billings, and cash collections results in a net contract asset or liability at the end of each reporting period. Fixed-price contracts are typically billed to the customer either using progress payments, whereby amounts are billed monthly as costs are incurred or work is completed, or performance based payments, which are based upon the achievement of specific, measurable events or accomplishments defined and valued at contract inception. Cost-type contracts are typically billed to the customer on a monthly or semi-monthly basis.
Contract assets are equivalent to and reflected as Unbilled receivables in the unaudited condensed consolidated statements of financial position and are primarily related to long-term contracts where revenue recognized under the cost-to-cost method exceeds amounts billed to customers. Unbilled receivables are classified as current assets and, in accordance with industry practice, include amounts that may be billed and collected beyond one year due to the long-cycle nature of many of our contracts. Accumulated contract costs in unbilled receivables include costs such as direct production costs, factory and engineering overhead, production tooling costs, and allowable G&A. Unbilled receivables also include certain estimates of variable consideration described above. These contract assets are not considered a significant financing component of the company’s contracts as the payment terms are intended to protect the customer in the event the company does not perform on its obligations under the contract.
Contract liabilities are equivalent to and reflected as Advance payments and billings in excess of costs incurred in the unaudited condensed consolidated statements of financial position. Certain customers make advance payments prior to the company’s satisfaction of its obligations on the contract. These amounts are recorded as contract liabilities until such obligations are satisfied, either over time as costs are incurred or at a point in time when deliveries are made. Contract liabilities are not a significant financing component as they are generally utilized to pay for contract costs within a one-year period or are used to ensure the customer meets contractual requirements.
The amount of revenue recognized for the three and ninesix months ended SeptemberJune 30, 2020 that was included in the December 31, 2019 contract liability balance was $442 million and $1.2 billion, respectively. The amount of revenue recognized for the three and six months ended June 30, 2019 that was included in the December 31, 2018 contract liability balance was $209$333 million and $1.2 billion, respectively. The amount of revenue recognized for the three and nine months ended September 30, 2018 that was included in the December 31, 2017 contract liability balance was $168 million and $1.2$1.0 billion, respectively.
Disaggregation of Revenue
See Note 119 for information regarding the company’s sales by customer type, contract type and geographic region for each of our segments. We believe those categories best depict how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors.

-6-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Accumulated Other Comprehensive Loss
The components of accumulated other comprehensive loss are as follows:
$ in millions September 30,
2019
 December 31,
2018
Unamortized prior service credit, net of tax expense of $21 for 2019 and $32 for 2018 $63
 $98
Cumulative translation adjustment (148) (144)
Other, net (2) (6)
Total accumulated other comprehensive loss $(87) $(52)
$ in millionsJune 30,
2020
December 31,
2019
Unamortized prior service credit, net of tax expense of $10 for 2020 and $17 for 2019$30
$51
Cumulative translation adjustment and other, net(147)(148)
Total accumulated other comprehensive loss$(117)$(97)

Reclassifications from accumulated other comprehensive loss to net earnings related to the amortization of prior service credit were $12 million and $35 million, net of taxes, for the three and nine months ended September 30, 2019, respectively and were $15 million and $45 million, net of taxes, for the three and nine months ended

-7-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

September 30, 2018, respectively. The reclassifications are included in the computation of net periodic pension cost (benefit). See Note 8 for further information.
Reclassifications from accumulated other comprehensive loss to net earnings relating to cumulative translation adjustments and effective cash flow hedges were not material for the three and nine months ended September 30, 2019 and 2018.
Leases
The company leases certain buildings, land and equipment. Under ASC 842, at contract inception we determine whether the contract is or contains a lease and whether the lease should be classified as an operating or a finance lease. Operating leases are included in Operating lease right-of-use assets, Other current liabilities, and Operating lease liabilities in our unaudited condensed consolidated statements of financial position.
The company recognizes operating lease right-of-use assets and operating lease liabilities based on the present value of the future minimum lease payments over the lease term at commencement date. We use our incremental borrowing rate based on the information available at commencement date to determine the present value of future payments and the appropriate lease classification. Many of our leases include renewal options aligned with our contract terms. We define the initial lease term to include renewal options determined to be reasonably certain. In our adoption of ASC 842, we elected not to recognize a right-of-use asset and a lease liability for leases with an initial term of 12 months or less; we recognize lease expense for these leases on a straight-line basis over the lease term. We elected the practical expedient to not separate lease components from nonlease components and applied that practical expedient to all material classes of leased assets.
Many of the company’s real property lease agreements contain incentives for tenant improvements, rent holidays or rent escalation clauses. For tenant improvement incentives, if the incentive is determined to be a leasehold improvement owned by the lessee, the company generally 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 rental expense on a straight-line basis over the term of the lease. For these 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 for intended use.
Finance leases are not material to our unaudited condensed consolidated financial statements and the company is not a lessor in any material arrangements. We do not have any material restrictions or covenants in our lease agreements, sale-leaseback transactions, land easements or residual value guarantees.
Related Party Transactions
TheFor all periods presented, the company had no material related party transactions in any period presented.transactions.
Accounting Standards Updates
On February 25, 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). ASC Topic 842 supersedes existing lease guidance, including ASC 840 - Leases. Among other things, ASU 2016-02 requires recognition of a right-of-use asset and liability for future lease payments for contracts that meet the definition of a lease and requires disclosure of certain information about leasing arrangements. On July 30, 2018, the FASB issued ASU No. 2018-11, Leases (Topic 842): Targeted Improvements, which, among other things, allows companies to elect an optional transition method to apply the new lease standard through a cumulative-effect adjustment in the period of adoption.
We adopted the standard on January 1, 2019 using the optional transition method and, as a result, did not recast prior period unaudited condensed consolidated comparative financial statements. All prior period amounts and disclosures are presented under ASC 840. We elected the package of practical expedients, which, among other things, allows us to carry forward our prior lease classifications under ASC 840. We did not elect to adopt the hindsight practical expedient and are therefore maintaining the lease terms we previously determined under ASC 840. Adoption of the new standard resulted in the recording of additional lease assets and lease liabilities on the unaudited condensed consolidated statements of financial position with no cumulative impact to retained earnings and did not have a material impact on our results of operations or cash flows.
Other accountingAccounting standards updates adopted and/or issued, but not effective until after SeptemberJune 30, 2019,2020, are not expected to have a material effect on the company’s unaudited condensed consolidated financial position, annual results of operations and/or cash flows.

-8-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

2.  ACQUISITION OF ORBITAL ATK
On June 6, 2018, the company completed its previously announced acquisition of Orbital ATK, by acquiring all of the outstanding shares of Orbital ATK for a purchase price of $7.7 billion in cash. On the Merger date, Orbital ATK became a wholly-owned subsidiary of the company and its name was changed to Northrop Grumman Innovation Systems, Inc. We established Innovation Systems as a new, fourth business sector. Its main products include precision munitions and armaments; tactical missiles and subsystems; ammunition; launch vehicles; space and strategic propulsion systems; aerospace structures; space exploration products; and national security and commercial satellite systems and related components/services. The acquisition was financed with proceeds from the company’s debt financing completed in October 2017 and cash on hand. We believe this acquisition will enable us to broaden our capabilities and offerings, provide additional innovative solutions to meet our customers’ emerging requirements, create value for shareholders and provide expanded opportunities for our combined employees.
Purchase Price Allocation
The acquisition was accounted for as a purchase business combination. As such, the company recorded the assets acquired and liabilities assumed at fair value, with the excess of the purchase price over the fair value of assets acquired and liabilities assumed recorded as goodwill. Determining the fair value of assets acquired and liabilities assumed requires significant judgment, including the amount and timing of expected future cash flows, long-term growth rates and discount rates. In some cases, the company used discounted cash flow analyses, which were based on our best estimate of future sales, earnings and cash flows after considering such factors as general market conditions, customer budgets, existing firm and future orders, changes in working capital, long term business plans and recent operating performance. Use of different estimates and judgments could yield materially different results.
During the second quarter of 2019, the company finalized its determination of the fair values of the assets acquired and liabilities assumed as of the Merger date. Based on additional information obtained during the measurement period, the company refined its initial assessment of fair value and recognized the following significant adjustments to its preliminary purchase price allocation: Intangible assets increased $220 million, Other current liabilities increased $114 million, Pension and other postretirement benefit (OPB) plan liabilities increased $56 million, Other non-current liabilities increased $53 million, Other current assets increased $44 million and Goodwill decreased $36 million. These adjustments did not result in a material impact on the financial results of prior periods.
The Merger date fair value of the consideration transferred totaled $7.7 billion in cash, which was comprised of the following:
$ in millions, except per share amounts Purchase price
Shares of Orbital ATK common stock outstanding as of the Merger date 57,562,152
Cash consideration per share of Orbital ATK common stock $134.50
Total purchase price $7,742


-9-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

The following purchase price allocation table presents the company’s final determination of the fair values of assets acquired and liabilities assumed at the Merger date:
$ in millions 
As of
June 6, 2018
Cash and cash equivalents $85
Accounts receivable 596
Unbilled receivables 1,237
Inventoried costs 220
Other current assets 237
Property, plant and equipment 1,509
Goodwill 6,259
Intangible assets 1,525
Other non-current assets 151
Total assets acquired 11,819
Trade accounts payable (397)
Accrued employee compensation (158)
Advance payments and billings in excess of costs incurred (222)
Below market contracts(1)
 (151)
Other current liabilities (412)
Long-term debt (1,687)
Pension and OPB plan liabilities (613)
Deferred tax liabilities (248)
Other non-current liabilities (189)
Total liabilities assumed (4,077)
Total purchase price $7,742
(1)
Included in Other current liabilities in the unaudited condensed consolidated statements of financial position.
The following table presents a summary of purchased intangible assets and their related estimated useful lives:
  
Fair Value
(in millions)
 Estimated Useful Life in Years
Customer contracts $1,245
 9
Commercial customer relationships 280
 13
Total customer-related intangible assets $1,525
  

The purchase price allocation resulted in the recognition of $6.3 billion of goodwill, a majority of which was allocated to the Innovation Systems sector. The goodwill recognized is attributable to expected revenue synergies generated by the integration of Aerospace Systems, Mission Systems and Technology Services products and technologies with those of legacy Orbital ATK, synergies resulting from the consolidation or elimination of certain costs, and intangible assets that do not qualify for separate recognition, such as the assembled workforce of Orbital ATK. None of the goodwill is expected to be deductible for tax purposes.

-10-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Unaudited Supplemental Pro Forma Information
The following table presents unaudited pro forma financial information prepared in accordance with Article 11 of Regulation S-X and computed as if Orbital ATK had been included in our results as of January 1, 2017:
$ in millions, except per share amounts Nine Months Ended September 30, 2018
Sales $24,163
Net earnings 3,050
Diluted earnings per share 17.41

The unaudited supplemental pro forma financial data has been calculated after applying our accounting policies and adjusting the historical results of Orbital ATK with pro forma adjustments, net of tax, that assume the acquisition occurred on January 1, 2017. Significant pro forma adjustments include the following:
1.The elimination of intercompany sales and costs of sales between the company and Orbital ATK of $80 million for the nine months ended September 30, 2018.
2.The elimination of nonrecurring transaction costs incurred by the company and Orbital ATK in connection with the Merger of $71 million for the nine months ended September 30, 2018.
3.The recognition of additional depreciation expense, net of removal of historical depreciation expense, of $10 million for the nine months ended September 30, 2018 related to the step-up in fair value of acquired property, plant and equipment.
4.The recognition of additional amortization expense, net of removal of historical amortization expense, of $101 million for the nine months ended September 30, 2018 related to the fair value of acquired intangible assets.
5.The elimination of Orbital ATK’s historical amortization of net actuarial losses and prior service credits and impact of the revised pension and OPB net periodic benefit cost as determined under the company’s plan assumptions of $51 million for the nine months ended September 30, 2018.
6.The income tax effect on the pro forma adjustments, which was calculated using the federal statutory tax rate, of $(2) million for the nine months ended September 30, 2018.
The unaudited pro forma financial information does not reflect the potential realization of revenue synergies or cost savings, nor does it reflect other costs relating to the integration of the two companies. This unaudited pro forma financial information should not be considered indicative of the results that would have actually occurred if the acquisition had been consummated on January 1, 2017, nor are they indicative of future results.
3.    EARNINGS PER SHARE, SHARE REPURCHASES AND DIVIDENDS ON COMMON STOCK
Basic Earnings Per Share
We calculate basic earnings per share by dividing net earnings by the weighted-average number of shares of common stock outstanding during each period.
Diluted Earnings Per Share
Diluted earnings per share include the dilutive effect of awards granted to employees under stock-based compensation plans. The dilutive effect of these securities totaled 0.80.4 million shares and 0.70.6 million shares for the three and ninesix months ended SeptemberJune 30, 2019.2020, respectively. The dilutive effect of these securities totaled 0.8 million shares and 0.90.6 million shares for the three and ninesix months ended SeptemberJune 30, 2018, respectively.2019.
Share Repurchases
On September 16, 2015, the company’s board of directors authorized a share repurchase program of up to $4.0 billion of the company’s common stock (the “2015 Repurchase Program”). Repurchases under the 2015 Repurchase Program commenced in March 2016.2016 and were completed in March 2020.
On December 4, 2018, the company’s board of directors authorized a new share repurchase program of up to an additional $3.0 billion in share repurchases of the company’s common stock (the “2018 Repurchase Program”). By its terms,Repurchases under the 2018 Repurchase Program commenced in March 2020 upon the completion of the company’s 2015 Repurchase Program. As of June 30, 2020, repurchases under the 2018 Repurchase Program will commence upon completion of the 2015 Repurchase Program and will expire when we have used all authorized funds for repurchases.
During the fourth quarter of 2018, the company entered into an accelerated share repurchase (ASR) agreement with Goldman Sachs & Co. LLC (Goldman Sachs) to repurchase $1.0 billion of the company’s common stock under the

-11-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

2015 Repurchase Program. Under the agreement, we made a payment of $1.0 billion to Goldman Sachs and received an initial delivery of 3.0 million shares valued at $800 million that were immediately canceled by the company. The remaining balance was settled on January 4, 2019 with a final delivery of 0.9 million shares from Goldman Sachs. The final average purchase price was $260.32 per share.
As of September 30, 2019, repurchases under the 2015 Repurchase Program totaled $3.4$0.2 billion; $0.6$2.8 billion remained under this share repurchase authorization. By its terms, the 20152018 Repurchase Program is set to expire when we have used all authorized funds for repurchases.repurchases have been used.
Share repurchases take place from time to time, subject to market conditions and management’s discretion, in the open market andor in privately negotiated transactions. The company retires its common stock upon repurchase and, in the periods presented, has not made any purchases of common stock other than in connection with these publicly announced repurchase programs.
The table below summarizes the company’s share repurchases to date under the authorizations described above:
       Shares Repurchased
(in millions)
       Shares Repurchased
(in millions)
Repurchase Program
Authorization Date
 Amount
Authorized
(in millions)
 Total
Shares Retired
(in millions)
 
Average 
Price
Per Share
(1)
 Date Completed Nine Months Ended September 30 Amount
Authorized
(in millions)
 Total
Shares Retired
(in millions)
 
Average 
Price
Per Share
(1)
 Date Completed Six Months Ended June 30
2019 2018 2020 2019
September 16, 2015 $4,000
 13.6
 $248.91
 
 2.3
 0.7
 $4,000
 15.4
 $260.33
 March 2020 0.9
 1.7
December 4, 2018 $3,000
 
 
 
 
 
 $3,000
 0.5
 326.20
 
 0.5
 

(1) 
Includes commissions paid.
Dividends on Common Stock
In May 2020, the company increased the quarterly common stock dividend 10 percent to $1.45 per share from the previous amount of $1.32 per share.

-7-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

In May 2019, the company increased the quarterly common stock dividend 10 percent to $1.32 per share from the previous amount of $1.20 per share.
In May 2018, the company increased the quarterly common stock dividend 9 percent to $1.20 per share from the previous amount of $1.10 per share.
In January 2018, the company increased the quarterly common stock dividend 10 percent to $1.10 per share from the previous amount of $1.00 per share.
4.3.    INCOME TAXES
Three Months Ended September 30 Nine Months Ended September 30Three Months Ended June 30 Six Months Ended June 30
$ in millions2019 2018 2019
20182020 2019 2020
2019
Federal and foreign income tax expense$122
 $120
 $460
 $466
$198
 $167
 $383
 $338
Effective income tax rate11.6% 8.8% 14.8% 14.0%16.5% 16.2% 17.0% 16.4%

Current Quarter
The thirdsecond quarter 20192020 effective tax rate increasedof 16.5 percent was generally comparable to 11.6 percent from 8.8 percent in the third quarter of 2018. The company’s effective tax rate for the third quarter of 2019 includes benefits of $89 million for research credits and $17 million for foreign derived intangible income. The company’s tax rate for the third quarter of 2018 included a $106 million benefit for research credits and manufacturing deductions and an $84 million benefit associated with the Tax Cuts and Jobs Act (the “2017 Tax Act”).
Year to Date
The year to date 2019 effective tax rate increased to 14.8 percent from 14.0 percent in the prior year period. The company’s year to date 2019second quarter 2020 effective tax rate includes benefits$48 million of $171 million for research credits, and $26as compared to $51 million in the prior year period.
Year to Date
The year to date 2020 effective tax rate increased to 17.0 percent from 16.4 percent in the prior period primarily due to an increase in reserves for foreign derived intangible income.uncertain tax positions. The company’s year to date 20182020 effective tax rate included a $156includes $90 million benefit forof research credits, and manufacturing deductions and an $84as compared to $82 million benefit associated within the prior year period. Both periods benefited from $13 million of excess tax benefits for employee share-based compensation.
In March 2020, the CARES Act was enacted. The CARES Act includes certain changes to U.S. tax law that impact the company, including a technical correction to the 2017 Tax Act.Cuts and Jobs Act, which makes certain qualified improvement property eligible for bonus depreciation. The CARES Act did not have a significant impact on the company’s second quarter and year to date 2020 effective tax rate.
During the three and nine months ended September 30, 2019, we increased ourThe company has recorded unrecognized tax benefits by approximately $294 million and $327 million, respectively, related to our methods of accounting associated with the timing of revenue recognition and related costs, and the 2017 Tax Act. It is reasonably possible that within the next 12 months our unrecognized tax benefits related to these matters may decrease by up to $70 million. Since enactment of the 2017 Tax Act, the IRS

-12-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Internal Revenue Service (IRS) and U.S. Treasury Department have issued and are expected to further issue interpretive guidance that impacts taxpayers. We will continue to evaluate such guidance as it is issued.
We file income tax returns in the U.S. federal jurisdiction and in various state and foreign jurisdictions. The Northrop Grumman 2014-2017 federal tax returns and refund claims related to its 2007-2016 federal tax returns are currently under IRS examination. In addition, legacy Orbital ATK federal tax returns for the year ended March 31, 2015, the nine-month transition period ended December 31, 2015 and calendar years 2016-2017 are currently under IRS examination.appeal with the IRS.
54.    FAIR VALUE OF FINANCIAL INSTRUMENTS
The company holds a portfolio of marketable securities consisting of securities to partially fund non-qualified employee benefit plans. A portion of these securities are held in common/collective trust funds and are measured at fair value using net asset value (NAV) per share as a practical expedient; and therefore are not required to be categorized in the fair value hierarchy table below. Marketable securities are included in Other non-current assets in the unaudited condensed consolidated statements of financial position.
The company’s derivative portfolio consists primarily of commodity forward contracts and foreign currency forward contracts. The company periodically uses commodity forward contracts to hedge forecasted purchases of certain commodities. The contracts generally establish a fixed price for the underlying commodity and are designated and qualify as effective cash flow hedges of such commodity purchases. Commodity derivatives are valued based on prices of future exchanges and recently reported transactions in the marketplace. For foreign currency forward contracts, whereWhere 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 rates.

-8-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

The following table presents the financial assets and liabilities the company records at fair value on a recurring basis identified by the level of inputs used to determine fair value:
 September 30, 2019 December 31, 2018 June 30, 2020 December 31, 2019
$ in millions Level 1 Level 2 Total Level 1 Level 2 Total Level 1 Level 2 Total Level 1 Level 2 Total
Financial Assets (Liabilities)                        
Marketable securities $351
 $
 $351
 $319
 $1
 $320
 $331
 $1
 $332
 $364
 $1
 $365
Marketable securities valued using NAV     16
   


 15
     16
     17
Total marketable securities 351
 
 367
 319
 1
 335
 331
 1
 348
 364
 1
 382
Derivatives 
 (5) (5) 
 (10) (10) 
 (1) (1) 
 (3) (3)

At September 30, 2019, the company had commodity forward contracts outstanding that hedge forecasted commodity purchases of 4 million pounds of copper and 1 million pounds of zinc. Gains or losses on the commodity forward contracts are recognized in product and service cost as the performance obligations on related contracts are satisfied.
The notional value of the company’s foreign currency forward contracts at SeptemberJune 30, 20192020 and December 31, 20182019 was $86$71 million and $114$98 million, respectively. The portion of notional value designated as a cash flow hedge at SeptemberAt June 30, 2019 was $9 million. At December 31, 2018,2020, 0 portion of the notional value was designated as a cash flow hedge. The portion of the notional value designated as a cash flow hedge at December 31, 2019 was $7 million.
The derivative fair values and related unrealized gains/losses at SeptemberJune 30, 20192020 and December 31, 20182019 were not material. There were no transfers of financial instruments between the three levels of the fair value hierarchy during the ninesix months ended SeptemberJune 30, 2019.2020.
The carrying value of cash and cash equivalents and commercial paper approximates fair value.
Long-term Debt
The estimated fair value of long-term debt was $15.2$19.0 billion and $14.3$15.1 billion as of SeptemberJune 30, 20192020 and December 31, 2018,2019, respectively. We calculated the fair value of long-term debt using Level 2 inputs, based on interest rates available for debt with terms and maturities similar to the company’s existing debt arrangements. The carrying value of long-term debt was $13.9$16.1 billion and $14.4$13.9 billion as of SeptemberJune 30, 20192020 and December 31, 2018,2019, respectively. The current portion of long-term debt is recorded in Other current liabilities in the unaudited condensed consolidated statements of financial position.

Unsecured Senior Notes
In March 2020, the company issued $2.25 billion of unsecured senior notes for general corporate purposes, including debt repayment and working capital, as follows:
-13-$750 million of 4.40% senior notes due 2030 (the “2030 Notes”),
$500 million of 5.15% senior notes due 2040 (the “2040 Notes”) and

$1.0 billion of 5.25% senior notes due 2050 (the “2050 Notes”).
We refer to the 2030 Notes, the 2040 Notes and the 2050 Notes, together, as the “notes.” Interest on the notes is payable semi-annually in arrears. The notes are generally subject to redemption, in whole or in part, at the company’s discretion at any time, or from time to time, prior to maturity at a redemption price equal to the greater of 100% of the principal amount of the notes to be redeemed or an applicable “make-whole” amount, plus accrued and unpaid interest.
Table of Contents

NORTHROP GRUMMAN CORPORATION                        

6.5.    INVESTIGATIONS, CLAIMS AND LITIGATION
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 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. On April 2, 2013, the U.S. Department of Justice informed the company of a False Claims Act complaint relating to the FSS contract that was filed under seal by a relator in June 2011 in the U.S. District

-9-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Court for the Eastern District of Virginia. On June 3, 2013, the United States filed a Notice informing the Court that the United States had decided not to intervene in this case. The relator alleged that the company violated the False Claims Act in a number of ways with respect to the FSS contract, alleged damage to the USPS in an amount of at least approximately $179 million annually, alleged that he was improperly discharged in retaliation, and sought an unspecified partial refund of the contract purchase price, penalties, attorney’s fees and other costs of suit. The relator later voluntarily dismissed his retaliation claim and reasserted it in a separate arbitration, which he also ultimately voluntarily dismissed. On September 5, 2014, the court granted the company’s motion for summary judgment and ordered the relator’s False Claims Act case be dismissed with prejudice. On February 16, 2018, both the company and the United States filed motions to dismiss many of the claims and counterclaims referenced above, in whole or in part. The United States also filed a motion seeking to amend its answer and counterclaim, including to reduce its counterclaim to approximately $193 million, which the court granted on June 11, 2018. On October 17, 2018, the court granted in part and denied in part the parties’ motions to dismiss. On December 17, 2018,February 3, 2020, the parties commenced what was expected to be a seven-week trial. The first four weeks of trial concluded, but the court issuedpostponed the remaining estimated three weeks as a Scheduling Order, proposed by the parties, providing for the partiesresult of COVID-19-related concerns. Trial is currently scheduled to engageresume in mediation through March 1, 2019. After the government shutdown, the mediation was rescheduled for May 2019. The parties filed joint motions to suspend the deadlines for pretrial activities while the parties engage in mediation. On April 29, 2019 and June 5, 2019, the court issued Orders suspending the deadlines. Those suspensions ended on July 1, 2019, and on July 12, 2019, the court issued an Order scheduling trial to commence on February 3,October 2020. Although the ultimate outcome of these matters (“the FSS matters,” collectively), including any possible loss, cannot be predicted or reasonably estimated at this time, the company intends vigorously to pursue and defend the FSS matters.
On August 8, 2013, the company received a court-appointed expert’s report in litigation pending in the Second Federal Court of the Federal District in Brazil brought by the Brazilian Post and Telegraph Corporation (ECT), a Brazilian state-owned entity, against Solystic SAS (Solystic), a French subsidiary of the company, and 2 of its consortium partners. In this suit, commenced on December 17, 2004, and relatively inactive for some period of time, ECT alleges the consortium breached its contract with ECT and seeks damages of approximately R$111 million (the equivalent of approximately $27$20 million as of SeptemberJune 30, 2019)2020), plus interest, inflation adjustments and attorneys’ fees, as authorized by Brazilian law, which amounts could be significant over time. The original suit sought R$89 million (the equivalent of approximately $21$16 million as of SeptemberJune 30, 2019)2020) in damages. In October 2013, ECT asserted an additional damage claim of R$22 million (the equivalent of approximately $5$4 million as of SeptemberJune 30, 2019)2020). In its counterclaim, Solystic alleges ECT breached the contract by wrongfully refusing to accept the equipment Solystic had designed and built and seeks damages of approximately €31 million (the equivalent of approximately $34$35 million as of SeptemberJune 30, 2019)2020), plus interest, inflation adjustments and attorneys’ fees, as authorized by Brazilian law. The Brazilian court retained an expert to consider certain issues pending before it. On August 8, 2013 and September 10, 2014, the company received reports from the expert, which contain some recommended findings relating to liability and the damages calculations put forth by ECT. Some of the expert’s recommended findings were favorable to the company and others were favorable to ECT. In November 2014, the parties submitted comments on the expert’s most recent report. On June 16, 2015, the court published a decision denying the parties’ request to present oral testimony. In a decision dated November 13, 2018, the trial court ruled in ECT’s favor on one of its claims against Solystic, and awarded damages of R$41 million (the equivalent of approximately $10$8 million as of SeptemberJune 30, 2019)2020) against Solystic and its consortium partners, with that amount to be adjusted for inflation and interest from November 2004 through any appeal, in accordance with the Manual of Calculations of the Federal Justice, as well as attorneys’ fees. On March 22, 2019, ECT appealed

-14-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

the trial court’s decision to the intermediate court of appeals. Solystic filed its appeal on April 11, 2019. The parties are exploring whether there ishave executed a possible pathsettlement agreement in this matter and have filed it with the court for a negotiated resolution of the dispute.approval.
We are engaged in remediation activities relating to environmental conditions allegedly resulting from historic operations at the former United States Navy and Grumman facilities in Bethpage, New York. For over 20 years, we have worked closely with the United States Navy, the United States Environmental Protection Agency, the New York State Department of Environmental Conservation, the New York State Department of Health and other federal, state and local governmental authorities, to address legacy environmental conditions in Bethpage. We have incurred, and expect to continue to incur, as included in Note 7,6, substantial remediation costs related to these environmental conditions. The remediation standards or requirements to which we are subject are being reconsidered and may changeare changing and costs may increase materially. As discussed in Note 7,6, the State of New York issued a Feasibility Study and Proposedan Amended Record of Decision, proposingseeking to impose additional remedial requirements. The company alongis engaged in discussions with the State of New York and certain other interested parties, has submitted comments on that proposal.potentially responsible parties. The State of New York has said that, among other things, it is also evaluating potential natural resource damages. In addition, we are a party to various, and expect to become a party to additional, legal proceedings and disputes related to remediation, costs, allowability and/or alleged environmental impacts in Bethpage, including with federal and state entities (including the Navy, Defense Contract Management Agency, the state, local municipalities and water districts,districts) and insurance carriers, as well as class action and individual plaintiffs alleging personal injury and property

-10-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

damage and seeking both monetary and non-monetary relief. These Bethpage matters could result in additional costs, fines, penalties, sanctions, compensatory or other damages (including natural resource damages), determinations on allocation, allowability and coverage, and non-monetary relief. We cannot at this time predict or reasonably estimate the potential cumulative outcomes or ranges of possible liability of these aggregate Bethpage matters.
On August 12, 2016, a putative class action complaint, naming Orbital ATK and two of its then-officers as defendants, Steven Knurr, et al. v. Orbital ATK, Inc., No. 16-cv-01031 (TSE-MSN), was filed in the United States District Court for the Eastern District of Virginia. The complaint asserts claims on behalf of purchasers of Orbital ATK securities for violations of Sections 10(b) and 20(a) of the Exchange Act and Rule 10b-5, allegedly arising out of false and misleading statements and the failure to disclose that: (i) Orbital ATK lacked effective control over financial reporting; and (ii) as a result, it failed to record an anticipated loss on a long-term contract with the U.S. Army to manufacture and supply small caliber ammunition at the U.S. Army’s Lake City Army Ammunition Plant. On April 24, 2017 and October 10, 2017, the plaintiffs filed amended complaints naming additional defendants and asserting claims for alleged violations of additional sections of the Exchange Act and alleged false and misleading statements in Orbital ATK’s Form S-4 filed in connection with the Orbital-ATK Merger. The complaint seeks damages, reasonable costs and expenses at trial, including counsel and expert fees, and such other relief as deemed appropriate by the Court. On June 7, 2019, the court approved the parties’ proposal to resolve the litigation for $108 million, subject to certain terms and conditions. The company continues to negotiate with and pursue coverage litigation against various of its insurance carriers.
The company is a party to various other investigations, lawsuits, arbitration, claims, enforcement actions 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, the company does not believe that the outcome of any of these other matters pending against the company is likely to have a material adverse effect on the company’s unaudited condensed consolidated financial position as of SeptemberJune 30, 2019,2020, or its annual results of operations and/or cash flows.
7.6.    COMMITMENTS AND CONTINGENCIES
U.S. Government Cost Claims and Contingencies
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 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 estimated exposure for such potential disallowed costs. Such provisions are reviewed periodically using the most recent information available. The company believes it has adequately reserved for disputed amounts that are probable and reasonably estimable, and that the outcome of any such matters would not have a material adverse effect on its unaudited condensed consolidated financial position as of SeptemberJune 30, 2019,2020, or its annual results of operations and/or cash flows.

-15-

TableRecently, the U.S. government has raised questions about an interest rate assumption used by the company to determine our CAS pension expense in previous years and in our current forward pricing rate proposal. On June 1, 2020, the government provided written notice that the assumptions the company used during the period 2013-2019 were potentially noncompliant with CAS. We are engaging with the government to address their questions, and are preparing our formal response, which we believe demonstrates the appropriateness of Contents

NORTHROP GRUMMAN CORPORATION                        

the assumptions used. However, the sensitivity to changes in interest rate assumptions makes it reasonably possible the outcome of this matter could have a material adverse effect on our financial position, results of operations and/or cash flows, although we are not currently able to estimate a range of any potential loss.
Environmental Matters
The table below summarizes the amount accrued for environmental remediation costs, management’s estimate of the rangeamount of reasonably possible future costs for environmental remediation, the amountin excess of accrued within that range,costs and the deferred costs expected to be recoverable through overhead charges on U.S. government contracts as of SeptemberJune 30, 20192020 and December 31, 2018:2019:
$ in millions 
Range of Reasonably Possible Future Costs(1)
 
Accrued Costs(2)
 
Deferred Costs(3)
September 30, 2019 $528 - $997 $543
 $423
December 31, 2018 447 - 835 461
 343
$ in millions 
Accrued Costs(1)(2)
 
Reasonably Possible Future Costs in Excess of Accrued Costs(2)
 
Deferred Costs(3)
June 30, 2020 $570
 $452
 $478
December 31, 2019 531
 448
 436
(1)
Estimated remediation costs are not discounted to present value. The range of reasonably possible future costs does not take into consideration amounts expected to be recoverable through overhead charges on U.S. government contracts.
(2) As of SeptemberJune 30, 2019, $1632020, $173 million is recorded in Other current liabilities and $380$397 million is recorded in Other non-current liabilities.
(2) Estimated remediation costs are not discounted to present value. The reasonably possible future costs in excess of accrued costs do not take into consideration amounts expected to be recoverable through overhead charges on U.S. government contracts.
(3) As of SeptemberJune 30, 2019, $1282020, $144 million is deferred in Prepaid expenses and other current assets and $295$334 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 our environmental remediation projects progress, or as changes in facts and circumstances occur, will materially affect the estimated liability accrued, except with respect to Bethpage, we do not anticipate that future remediation expenditures associated with our currently identified projects will have a material adverse effect on the company’s unaudited condensed consolidated financial position as of SeptemberJune 30, 2019,2020, or its annual results of operations and/or cash flows. With respect to Bethpage, the State of New York issued a Feasibility Study and Proposedan Amended Record of Decision, proposing to impose additional remedial requirements. The company along with other interested parties, has submitted comments on that proposal. The comments address, among other things, the adequacy of the existing remedy, concernsis engaged in discussions with the state’s proposal,State of New York and an alternative approach.other potentially

-11-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

responsible parties. As discussed in Note 6,5, the remediation standards or requirements to which we are subject are being reconsidered and may changeare changing and costs may increase materially.
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 SeptemberJune 30, 2019,2020, there were $452$460 million of stand-by letters of credit and guarantees and $209$79 million of surety bonds outstanding.
Commercial Paper
The company maintains a commercial paper program that serves as a source of short-term financing with capacity to issue unsecured commercial paper notes up to $2.0 billion. At SeptemberJune 30, 2019,2020, there were $399 million of outstanding short-term0 commercial paper borrowings at a weighted-average interest rate of 2.31 percent that have original maturities of three months or less from the date of issuance. The outstanding balance of commercial paper borrowings is recorded in Other current liabilities in the unaudited condensed consolidated statements of financial position.outstanding.
Credit Facilities
The company maintains a five-year senior unsecured credit facility in an aggregate principal amount of $2.0 billion (the “2018 Credit Agreement”) that matures in August 2023. At September 30, 2019, there was 0 balance outstanding under this facility; however,2024 and is intended to support the outstanding balance ofcompany’s commercial paper program and other general corporate purposes. Commercial paper borrowings reducesreduce the amount available for borrowing under the 2018 Credit Agreement. In October 2019, the company amended the 2018 Credit Agreement to extend its maturity date by one year from August 2023 to August 2024.At June 30, 2020, there was 0 balance outstanding under this facility.
In December 2016, a subsidiary of the company entered into a two-year credit facility, with two additional one-year option periods, in an aggregate principal amount of £120 million (the equivalent of approximately $148 million as of SeptemberJune 30, 2019)2020) (the “2016 Credit Agreement”). The company exercised the second option to extend the maturity to December 2020. The 2016 Credit Agreement is guaranteed by the company. At SeptemberJune 30, 2019,2020, there was £60£50 million (the equivalent of approximately $74$62 million) outstanding under this facility, which bears interest at a rate of LIBOR plus 1.10 percent. All of the borrowings outstanding under this facility mature less than one year fromare recorded in Other current liabilities in the dateunaudited condensed consolidated statement of issuance, but may be renewed under the terms of the facility. Based on our intent and ability to refinance the obligations on a long-term basis, a large majority of the borrowings are classified as non-current.

-16-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

financial position.
At SeptemberJune 30, 2019,2020, the company was in compliance with all covenants under its credit agreements.
87.    RETIREMENT BENEFITS
The cost (benefit) to the company of its retirementpension and other postretirement benefit (OPB) plans is shown in the following table:
Three Months Ended September 30 Nine Months Ended September 30Three Months Ended June 30 Six Months Ended June 30
Pension
Benefits
 OPB Pension
Benefits
 OPBPension
Benefits
 OPB Pension
Benefits
 OPB
$ in millions2019 2018 2019 2018 2019 2018 2019 20182020 2019 2020 2019 2020 2019 2020 2019
Components of net periodic benefit cost (benefit)                              
Service cost$92
 $102
 $4
 $5
 $276
 $301
 $12
 $15
$102
 $92
 $5
 $4
 $204
 $184
 $9
 $8
Interest cost340
 316
 20
 20
 1,020
 906
 60
 58
306
 340
 16
 20
 613
 680
 33
 40
Expected return on plan assets(525) (571) (23) (26) (1,576) (1,644) (69) (75)(594) (526) (25) (23) (1,188) (1,051) (51) (46)
Amortization of prior service credit(15) (15) (1) (5) (44) (44) (2) (16)(15) (14) 1
 
 (30) (29) 2
 (1)
Net periodic benefit cost (benefit)$(108) $(168) $
 $(6) $(324) $(481) $1
 $(18)$(201) $(108) $(3) $1
 $(401) $(216) $(7) $1

Employer Contributions
The company sponsors defined benefit pension and OPB plans, as well as defined contribution plans. We fund our defined benefit pension plans annually in a manner consistent with the Employee Retirement Income Security Act of 1974, as amended by the Pension Protection Act of 2006.
Contributions made by the company to its retirement plans are as follows:
Three Months Ended September 30 Nine Months Ended September 30Three Months Ended June 30 Six Months Ended June 30
$ in millions2019 2018 2019 20182020 2019 2020 2019
Defined benefit pension plans$18
 $273
 $64
 $318
$26
 $23
 $46
 $46
OPB plans10
 10
 34
 32
11
 12
 23
 24
Defined contribution plans98
 104
 377
 296
100
 88
 356
 279


-12-

9.
Table of Contents

NORTHROP GRUMMAN CORPORATION                        

8.    STOCK COMPENSATION PLANS AND OTHER COMPENSATION ARRANGEMENTS
Stock Awards
The following table presents the number of restricted stock rights (RSRs) and restricted performance stock rights (RPSRs) granted to employees under the company’s long-term incentive stock plan and the grant date aggregate fair value of those stock awards for the periods presented:
 Nine Months Ended September 30 Six Months Ended June 30
in millions 2019 2018 2020 2019
RSRs granted 0.1
 0.1
 0.1
 0.1
RPSRs granted 0.2
 0.2
 0.2
 0.2
Grant date aggregate fair value $92
 $119
 $91
 $92

RSRs typically vest on the third anniversary of the grant date, while RPSRs generally vest and pay out based on the achievement of financial metrics over a three-year period.

-17-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Cash Awards
The following table presents the minimum and maximum aggregate payout amounts related to cash units (CUs) and cash performance units (CPUs) granted to employees in the periods presented:
 Nine Months Ended September 30 Six Months Ended June 30
$ in millions 2019 2018 2020 2019
Minimum aggregate payout amount $36
 $36
 $31
 $36
Maximum aggregate payout amount 203
 205
 175
 203

CUs typically vest and settle in cash on the third anniversary of the grant date, while CPUs generally vest and pay out in cash based on the achievement of financial metrics over a three-year period.
10.    LEASES
As described in Note 1, effective January 1, 2019, we adopted ASC 842 using the optional transition method. In accordance with the optional transition method, we did not recast the prior period unaudited condensed consolidated financial statements and all prior period amounts and disclosures are presented under ASC 840. Finance leases are not material to our unaudited condensed consolidated financial statements and are therefore not included in the following disclosures.
Total Lease Cost
Total lease cost is included in Product and Service costs and G&A expenses in the unaudited condensed consolidated statement of earnings and comprehensive income and is recorded net of immaterial sublease income. Total lease cost is comprised of the following:
$ in millions Three Months Ended September 30, 2019 Nine Months Ended September 30, 2019
Operating lease cost $78
 $237
Variable lease cost 3
 7
Short-term lease cost 25
 54
Total lease cost $106
 $298

Supplemental Balance Sheet Information
Supplemental operating lease balance sheet information consists of the following:
$ in millions September 30, 2019
Operating lease right-of-use assets $1,511
   
Other current liabilities 260
Operating lease liabilities 1,304
Total operating lease liabilities $1,564

Other Supplemental Information
Other supplemental operating lease information consists of the following:
$ in millions Nine Months Ended September 30, 2019
Cash paid for amounts included in the measurement of operating lease liabilities $223
Right-of-use assets obtained in exchange for new lease liabilities 397
   
Weighted average remaining lease term 11.7 years
Weighted average discount rate 3.8%


-18-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Maturities of Lease Liabilities
Maturities of operating lease liabilities as of September 30, 2019 are as follows:
$ in millions  
Year Ending December 31  
2019 (1)
 $74
2020 298
2021 249
2022 212
2023 175
Thereafter 986
Total lease payments 1,994
Less: imputed interest (430)
Present value of operating lease liabilities $1,564
(1)
Excludes the nine months endedSeptember 30, 2019.
As of September 30, 2019, we have approximately $100 million in rental commitments for real estate leases that have not yet commenced. These leases are expected to commence in 2020 and 2021 with lease terms of 2 to 12 years.
Rental expense for operating leases classified under ASC 840 for the three and nine months ended September 30, 2018 was $97 million and $270 million, respectively. These amounts are net of immaterial amounts of sublease income. As of December 31, 2018, future minimum lease payments under long-term non-cancelable operating leases as classified under ASC 840 were as follows:
$ in millions 
  
Year Ending December 31  
2019 $312
2020 270
2021 221
2022 186
2023 152
Thereafter 939
Total minimum lease payments $2,080


-19--13-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

11.9.    SEGMENT INFORMATION
Effective January 1, 2020, the company reorganized its operating sectors to better align the company’s broad portfolio to serve its customers’ needs. The company is aligned in 4 operatingnew sectors, which also comprise our reportable segments: Aerospacesegments, are Aeronautics Systems, InnovationDefense Systems, Mission Systems and Technology Services.Space Systems.
As discussed in Note 1, beginning in the second quarter of 2020, the company no longer considers certain unallowable costs as part of management’s evaluation of segment operating performance. As a result, certain unallowable costs, which were previously included in segment operating results, are now reported in Unallocated corporate expense within operating income. This change has been applied retrospectively in the amounts below. See Part II, Item 5 for further information regarding the impact of this change on the company’s current and prior period segment information.
The following table presents sales and operating income by segment:
Three Months Ended September 30 Nine Months Ended September 30Three Months Ended June 30 Six Months Ended June 30
$ in millions2019 2018 2019 20182020 2019 2020 2019
Sales              
Aerospace Systems$3,458
 $3,282
 $10,344
 $9,899
Innovation Systems1,584
 1,415
 4,520
 1,815
Aeronautics Systems$2,925
 $2,721
 $5,768
 $5,539
Defense Systems1,886
 1,916
 3,767
 3,684
Mission Systems3,029
 2,911
 9,043
 8,668
2,446
 2,404
 4,793
 4,614
Technology Services1,067
 1,040
 3,088
 3,232
Space Systems2,048
 1,788
 3,996
 3,589
Intersegment eliminations(663) (563) (1,875) (1,675)(421) (373) (820) (781)
Total sales8,475
 8,085
 25,120
 21,939
8,884
 8,456
 17,504
 16,645
Operating income              
Aerospace Systems324
 376
 1,067
 1,074
Innovation Systems164
 161
 500
 200
Aeronautics Systems310
 299
 573
 610
Defense Systems217
 212
 415
 416
Mission Systems398
 399
 1,189
 1,122
347
 338
 700
 661
Technology Services136
 111
 351
 328
Space Systems209
 193
 411
 383
Intersegment eliminations(82) (68) (222) (204)(52) (49) (101) (99)
Total segment operating income940

979
 2,885
 2,520
1,031

993
 1,998
 1,971
Net FAS (service)/CAS pension adjustment131
 176
 346
 440
103
 107
 208
 215
Unallocated corporate (expense) income(120) 17
 (398) (123)
Unallocated corporate expense(140) (154) (278) (304)
Total operating income$951
 $1,172
 $2,833
 $2,837
$994
 $946
 $1,928
 $1,882

Net FAS (Service)/CAS Pension Adjustment
For financial statement purposes, we account for our employee pension plans in accordance with FAS. However, the cost of these plans is charged to our contracts in accordance with the Federal Acquisition Regulation (FAR) and the related U.S. Government Cost Accounting Standards (CAS). The net FAS (service)/CAS pension adjustment reflects the difference between CAS pension expense included as cost in segment operating income and the service cost component of FAS expense included in total operating income.
Unallocated Corporate (Expense) IncomeExpense
Unallocated corporate expense includes the portion of corporate costs not considered allowable or allocable under applicable CAS or FAR, and therefore not allocated to the segments, such as a portion of management and administration, legal, environmental, compensation, retiree benefits, advertising and other corporate unallowable costs. Unallocated corporate expense also includes costs not considered part of management’s evaluation of segment operating performance, such as amortization of purchased intangible assets and the additional depreciation expense related to the step-up in fair value of property, plant and equipment acquired through business combinations.combinations, as well as certain compensation and other costs.

-20--14-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Disaggregation of Revenue
Sales by Customer TypeThree Months Ended September 30 Nine Months Ended September 30
 2019 2018 2019 2018
$ in millions$
%(3)
 $
%(3)
 $
%(3)
 $
%(3)
Aerospace Systems           
U.S. government (1)
$3,014
87% $2,926
89% $8,954
87% $8,633
87%
International (2)
353
10% 270
8% 1,137
11% 990
10%
Other customers36
1% 44
2% 100
1% 124
1%
Intersegment sales55
2% 42
1% 153
1% 152
2%
Aerospace Systems sales3,458
100% 3,282
100% 10,344
100% 9,899
100%
Innovation Systems           
U.S. government (1)
1,163
74% 972
69% 3,239
72% 1,237
68%
International (2)
228
14% 272
19% 702
16% 364
20%
Other customers99
6% 134
9% 331
7% 164
9%
Intersegment sales94
6% 37
3% 248
5% 50
3%
Innovation Systems sales1,584
100% 1,415
100% 4,520
100% 1,815
100%
Mission Systems           
U.S. government (1)
2,260
75% 2,232
77% 6,775
75% 6,577
76%
International (2)
416
14% 374
12% 1,242
14% 1,144
13%
Other customers32
1% 25
1% 105
1% 89
1%
Intersegment sales321
10% 280
10% 921
10% 858
10%
Mission Systems sales3,029
100% 2,911
100% 9,043
100% 8,668
100%
Technology Services           
U.S. government (1)
629
59% 581
56% 1,799
58% 1,780
55%
International (2)
208
19% 183
17% 642
21% 596
18%
Other customers37
4% 72
7% 94
3% 241
8%
Intersegment sales193
18% 204
20% 553
18% 615
19%
Technology Services sales1,067
100% 1,040
100% 3,088
100% 3,232
100%
Total           
U.S. government (1)
7,066
83% 6,711
83% 20,767
83% 18,227
83%
International (2)
1,205
14% 1,099
14% 3,723
15% 3,094
14%
Other customers204
3% 275
3% 630
2% 618
3%
Total Sales$8,475
100% $8,085
100% $25,120
100% $21,939
100%
Sales by Customer TypeThree Months Ended June 30 Six Months Ended June 30
 2020 2019 2020 2019
$ in millions$
%(3)
 $
%(3)
 $
%(3)
 $
%(3)
Aeronautics Systems           
U.S. government(1)
$2,477
85% $2,238
82% $4,838
84% $4,572
82%
International(2)
407
14% 439
16% 851
15% 874
16%
Other customers12
% 20
1% 24
% 45
1%
Intersegment sales29
1% 24
1% 55
1% 48
1%
Aeronautics Systems sales2,925
100% 2,721
100% 5,768
100% 5,539
100%
Defense Systems           
U.S. government(1)
1,305
69% 1,281
67% 2,564
68% 2,422
66%
International(2)
316
17% 365
19% 656
18% 728
20%
Other customers85
4% 106
5% 196
5% 203
5%
Intersegment sales180
10% 164
9% 351
9% 331
9%
Defense Systems sales1,886
100% 1,916
100% 3,767
100% 3,684
100%
Mission Systems           
U.S. government(1)
1,776
73% 1,746
73% 3,447
72% 3,359
73%
International(2)
468
19% 465
19% 951
20% 841
18%
Other customers18
1% 29
1% 35
1% 53
1%
Intersegment sales184
7% 164
7% 360
7% 361
8%
Mission Systems sales2,446
100% 2,404
100% 4,793
100% 4,614
100%
Space Systems           
U.S. government(1)
1,911
93% 1,679
94% 3,714
93% 3,348
93%
International(2)
70
4% 32
2% 138
3% 75
2%
Other customers39
2% 56
3% 90
3% 125
4%
Intersegment sales28
1% 21
1% 54
1% 41
1%
Space Systems sales2,048
100% 1,788
100% 3,996
100% 3,589
100%
Total           
U.S. government(1)
7,469
84% 6,944
82% 14,563
83% 13,701
82%
International(2)
1,261
14% 1,301
16% 2,596
15% 2,518
15%
Other customers154
2% 211
2% 345
2% 426
3%
Total Sales$8,884
100% $8,456
100% $17,504
100% $16,645
100%
(1) 
Sales to the U.S. government include sales from contracts for which we are the prime contractor, as well as those for which we are a subcontractor and the ultimate customer is the U.S. government. Each of the company’s segments derives substantial revenue from the U.S. government.
(2) International sales include sales from contracts for which we are the prime contractor, as well as those for which we are a subcontractor and the ultimate customer is an international customer. These sales include foreign military sales contracted through the U.S. government.
(3) Percentages calculated based on total segment sales.

-21--15-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Sales by Contract TypeThree Months Ended September 30 Nine Months Ended September 30Three Months Ended June 30 Six Months Ended June 30
2019 2018 2019 20182020 2019 2020 2019
$ in millions$
%(1)
 $
%(1)
 $
%(1)
 $
%(1)
$
%(1)
 $
%(1)
 $
%(1)
 $
%(1)
Aerospace Systems 
 
  
 
  
 
  
 
Aeronautics Systems 
 
  
 
  
 
  
 
Cost-type$1,995
59% $1,953
60% $5,976
59% $5,789
59%$1,426
49% $1,312
49% $2,769
48% $2,624
48%
Fixed-price1,408
41% 1,287
40% 4,215
41% 3,958
41%1,470
51% 1,385
51% 2,944
52% 2,867
52%
Intersegment sales55
  42
  153
  152
 29
  24
  55
  48
 
Aerospace Systems sales3,458
  3,282
  10,344
  9,899
 
Innovation Systems           
Aeronautics Systems sales2,925
  2,721
  5,768
  5,539
 
Defense Systems           
Cost-type419
28% 373
27% 1,232
29% 472
27%582
34% 632
36% 1,210
35% 1,255
37%
Fixed-price1,071
72% 1,005
73% 3,040
71% 1,293
73%1,124
66% 1,120
64% 2,206
65% 2,098
63%
Intersegment sales94
  37
  248
  50
 180
  164
  351
  331
 
Innovation Systems sales1,584
  1,415
  4,520
  1,815
 
Defense Systems sales1,886
  1,916
  3,767
  3,684
 
Mission Systems                      
Cost-type1,264
47% 1,259
48% 3,854
47% 3,745
48%895
40% 870
39% 1,741
39% 1,705
40%
Fixed-price1,444
53% 1,372
52% 4,268
53% 4,065
52%1,367
60% 1,370
61% 2,692
61% 2,548
60%
Intersegment sales321
  280
  921
  858
 184
  164
  360
  361
 
Mission Systems sales3,029
  2,911
  9,043
  8,668
 2,446
  2,404
  4,793
  4,614
 
Technology Services           
Space Systems           
Cost-type398
46% 373
45% 1,202
47% 1,195
46%1,468
73% 1,298
73% 2,866
73% 2,604
73%
Fixed-price476
54% 463
55% 1,333
53% 1,422
54%552
27% 469
27% 1,076
27% 944
27%
Intersegment sales193
  204
  553
  615
 28
  21
  54
  41
 
Technology Services sales1,067
  1,040
  3,088
  3,232
 
Space Systems sales2,048
  1,788
  3,996
  3,589
 
Total                      
Cost-type4,076
48% 3,958
49% 12,264
49% 11,201
51%4,371
49% 4,112
49% 8,586
49% 8,188
49%
Fixed-price4,399
52% 4,127
51% 12,856
51% 10,738
49%4,513
51% 4,344
51% 8,918
51% 8,457
51%
Total Sales$8,475
  $8,085
  $25,120
  $21,939
 $8,884
  $8,456
  $17,504
  $16,645
 
(1) 
Percentages calculated based on external customer sales.  

-22--16-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Sales by Geographic RegionThree Months Ended September 30 Nine Months Ended September 30Three Months Ended June 30 Six Months Ended June 30
20192018 2019 201820202019 2020 2019
$ in millions$
%(2)
 $
%(2)
 $
%(2)
 $
%(2)
$
%(2)
 $
%(2)
 $
%(2)
 $
%(2)
Aerospace Systems           
Aeronautics Systems           
United States$3,050
90% $2,970
92% $9,054
89% $8,757
90%$2,489
86% $2,258
84% $4,862
85% $4,617
84%
Asia/Pacific173
5% 121
4% 632
6% 499
5%202
7% 215
8% 409
7% 448
8%
All other (1)
180
5% 149
4% 505
5% 491
5%205
7% 224
8% 442
8% 426
8%
Intersegment sales55
  42
  153
  152
 29
  24
  55
  48
 
Aerospace Systems sales3,458
  3,282
  10,344
  9,899
 
Innovation Systems           
Aeronautics Systems sales2,925
  2,721
  5,768
  5,539
 
Defense Systems           
United States1,262
85% 1,105
80% 3,570
84% 1,401
79%1,390
82% 1,387
79% 2,760
81% 2,625
78%
Asia/Pacific30
2% 72
5% 123
3% 96
6%107
6% 125
7% 189
5% 213
6%
All other (1)
198
13% 201
15% 579
13% 268
15%209
12% 240
14% 467
14% 515
16%
Intersegment sales94
  37
  248
  50
 180
  164
  351
  331
 
Innovation Systems sales1,584
  1,415
  4,520
  1,815
 
Defense Systems sales1,886
  1,916
  3,767
  3,684
 
Mission Systems                      
United States2,292
85% 2,253
86% 6,880
85% 6,666
85%1,794
79% 1,775
79% 3,482
79% 3,412
80%
Asia/Pacific143
5% 208
8% 443
5% 521
7%191
9% 142
6% 367
8% 277
7%
All other (1)
273
10% 170
6% 799
10% 623
8%277
12% 323
15% 584
13% 564
13%
Intersegment sales321
  280
  921
  858
 184
  164
  360
  361
 
Mission Systems sales3,029
  2,911
  9,043
  8,668
 2,446
  2,404
  4,793
  4,614
 
Technology Services           
Space Systems           
United States666
76% 653
78% 1,893
75% 2,021
77%1,950
97% 1,735
98% 3,804
97% 3,473
98%
Asia/Pacific44
5% 45
5% 144
6% 113
4%5
% 2
% 10
% 14
%
All other (1)
164
19% 138
17% 498
19% 483
19%65
3% 30
2% 128
3% 61
2%
Intersegment sales193
  204
  553
  615
 28
  21
  54
  41
 
Technology Services sales1,067
  1,040
  3,088
  3,232
 
Space Systems sales2,048
  1,788
  3,996
  3,589
 
Total                      
United States7,270
86% 6,981
86% 21,397
85% 18,845
86%7,623
86% 7,155
84% 14,908
85% 14,127
85%
Asia/Pacific390
5% 446
6% 1,342
5% 1,229
6%505
6% 484
6% 975
6% 952
6%
All other (1)
815
9% 658
8% 2,381
10% 1,865
8%756
8% 817
10% 1,621
9% 1,566
9%
Total Sales$8,475
  $8,085
  $25,120
  $21,939
 $8,884
  $8,456
  $17,504
  $16,645
 
(1) 
All other is principally comprised of Europe and the Middle East.  
(2) 
Percentages calculated based on external customer sales.  

-23--17-


REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors and Shareholders of
Northrop Grumman Corporation
Falls Church, Virginia
Results of Review of Interim Financial Information
We have reviewed the accompanying condensed consolidated statement of financial position of Northrop Grumman Corporation and subsidiaries (the “Company”) as of SeptemberJune 30, 2019,2020, and the related condensed consolidated statements of earnings and comprehensive income and changes in shareholders’ equity for the three-month and nine-monthsix-month periods ended SeptemberJune 30, 20192020 and 2018,2019, and of cash flows for the nine-monthsix-month periods ended SeptemberJune 30, 20192020 and 2018,2019, and the related notes (collectively referred to as the “interim financial information”). Based on our review, we are not aware of any material modifications that should be made to the accompanying interim financial information for it to be in conformity with accounting principles generally accepted in the United States of America.
We have previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated statement of financial position of Northrop Grumman Corporation and subsidiaries as of December 31, 2018,2019, and the related consolidated statements of earnings and comprehensive income, changes in shareholders’ equity, and cash flows for the year then ended (not presented herein); and in our report dated January 30, 2019,29, 2020, we expressed an unqualified opinion on those consolidated financial statements, which included an explanatory paragraph regarding the Company’s change in its method of accounting for recognizing pension and other postretirement benefit plans actuarial gains and losses andleases in 2019 due to the manner in which it accounts for revenue from contracts with customers.adoption of ASC 842, Leases. In our opinion, the information set forth in the accompanying condensed consolidated statement of financial position as of December 31, 2018,2019, is fairly stated, in all material respects, in relation to the audited consolidated statement of financial position from which it has been derived.
Basis for Review Results
This interim financial information is the responsibility of the Company’s management. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our reviews in accordance with standards of the PCAOB. A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the PCAOB, the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

/s/  Deloitte & Touche LLP
McLean, Virginia
October 23, 2019July 29, 2020


-24--18-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Item 2.    Management’s Discussion and Analysis of Financial Condition and Results of Operations
OVERVIEW
Northrop Grumman Corporation (herein referred to as “Northrop Grumman,” the “company,” “we,” “us,” or “our”) is a leading global securityaerospace and defense company. We offer ause our broad portfolio of capabilities and technologies that enable us to create and deliver innovative platforms, systems and solutions for applications that range from undersea to outer spacein space; manned and into cyberspace. We provide capabilities in autonomous systems;airborne systems, including strike; hypersonics; cyber; command, control, communications and computers, intelligence, surveillance and reconnaissance (C4ISR); space; strike; and logistics and modernization. We participate in many high-priority defense and government programs in the United States (U.S.) and abroad. 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 foreign, state and local governments, as well as commercial customers.
The following discussion should be read along with the financial statements included in this Form 10-Q, as well as our 20182019 Annual Report on Form 10-K, the Form 8-K that we filed with the SEC on April 29, 2020, which providesrecasts the disclosures in certain portions of the 2019 Annual Report on Form 10-K to reflect changes in the company’s reportable segments, and the Quarterly Report on Form 10-Q for the quarter ended March 31, 2020. These documents provide additional information on our business and the environment in which we operate and our operating results.
AcquisitionCOVID-19
Coronavirus disease 2019 (“COVID-19”) was first reported in late 2019 and has since dramatically impacted the global health and economic environment, including millions of Orbital ATK
On June 6, 2018 (the “Merger date”),confirmed cases, business slowdowns or shutdowns, government challenges and market volatility. In March 2020, the company completed its previously announced acquisition of Orbital ATK, Inc. (“Orbital ATK”) (the “Merger”). On the Merger date, Orbital ATK became a wholly-owned subsidiary of the company and its name was changed to Northrop Grumman Innovation Systems, Inc., which we establishedWorld Health Organization characterized COVID-19 as a new, fourthglobal pandemic, and the President declared a national emergency concerning the COVID-19 outbreak. The company’s leadership, our crisis management and business sector (“Innovation Systems”). The operating results of Innovation Systems subsequentresumption teams, and local site leadership continue closely to monitor and address the Merger date have been included indevelopments, including the company’s unaudited condensed consolidated results of operations. See Note 2 to the financial statements for further information regarding the acquisition of Orbital ATK.
In June 2018, the U.S. Federal Trade Commission (FTC) issued a Decisionimpact on our company, our employees, our customers, our suppliers and Order enabling the acquisition to proceed and providing for solid rocket motors to be available on a non-discriminatory basis under certain circumstances and processes.our communities. The company has considered and continues to consider guidance from the Centers for Disease Control (CDC), other health organizations, governments and our customers, among others. We have taken, and continuescontinue to take, robust actions to help ensure complianceprotect the health, safety and well-being of our employees, to support our suppliers and local communities, and to continue to serve our customers. Our goals have been to lessen the immediate potential adverse impacts, both health and economic, and to continue to position the company for long-term success. Like the communities in which we serve, our actions have varied depending on the spread of COVID-19 and local health requirements, the needs of our employees and the needs of our business. Among other actions, we have required or enabled employees to work from home or remotely where practicable, and expanded IT and communication support to enhance their productivity; adjusted work spaces and shift schedules to facilitate social distancing for those who continue to work in our facilities; enhanced cleaning and disinfecting procedures at our facilities; required face coverings and worked to procure and distribute personal protective equipment (“PPE”); implemented health checks and visitor protocols; restricted travel; provided additional benefits including paid time off for those most at risk; and contributed financial and manufacturing resources to supporting critical national requirements, such as for PPE. Along with the termsNorthrop Grumman Foundation, we have provided grants for global, national and local organizations that support frontline healthcare workers, address food insecurity, advance efforts for vaccines, increase student access to technology and provide support to vulnerable populations; donated PPE items to emergency response teams and healthcare professionals, including N95 masks and Tyvek suits; and established a COVID-19 relief matching gift program for employees.
Earlier in the COVID-19 pandemic, many state and local jurisdictions implemented mandatory stay-at-home or shelter-in-place orders. Most of those orders exempted some or all of the Order. Similarly,defense industrial base, including Northrop Grumman and many of our suppliers, as part of the Compliance Officer, appointed underessential or critical infrastructure. Our facilities have largely remained open and many of our employees who cannot work remotely are continuing to come to work and support our customers’ national security and mission-essential operations. More recently, state and local jurisdictions started to lift mandatory stay-at-home or shelter-in-place orders and started gradually to ease restrictions. We started to implement return to office plans to allow some employees who had been working remotely slowly to return to the Order,workplace. At our facilities, we generally saw employee absenteeism decrease and productivity increase during the second quarter. Most recently, as cases have resurged in parts of our country, including areas in which we maintain large facilities, we have seen governments slow or reverse efforts to reopen or shift into later phases of recovery, with increased risks to our operations. Throughout, we have worked to adapt and to take robust actions to protect the health, safety and well-being of our employees and to serve our customers, considering, among other things, state and local requirements and guidance from the CDC. We have also taken various steps in efforts to support our

-19-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

suppliers, with a particular focus on critical small and midsized business partners, including passing through increased progress payments from DoD to our suppliers and accelerating payments to certain suppliers.
Even though we have been able to continue many of our operations, we have experienced and expect to continue to experience certain increased costs to maintain our operations and address reductions in productivity, including as a result of actions to protect health; because of illness, quarantines, and absenteeism; as a result of government actions; and because of disruption and stress among our suppliers and customers. We continue to monitor this situation closely and cannot predict how it will change, including the extent of any increase in the number of COVID-19 cases and the FTCcosts and impacts to us. Our customers have takengenerally continued to make timely payments, and continuewe are working with them to take various actions to oversee compliance. In October 2019,consider the company received a civil investigative demand from the FTC requesting certain information relating to a potential issuepossibility of the company’s compliance with the Order in connection with a pending strategic missile competition. The company is working to respond to the request. We believe the company has beenadditional cost recoveries. Again, however, our customers are facing tremendous demands and continues to be in full compliance with the Order, but we cannot predict anyhow this may change and how they will continue to allocate resources.
COVID-19-related impacts reduced the company’s second quarter 2020 revenue and operating income, in particular at Aeronautics and Mission Systems; however, those impacts were less significant than we initially expected. Based on what we understand today, we do not currently expect COVID-19-related impacts to materially reduce our revenue or operating income during the second half of the year. However, our employees, suppliers and customers, the company and our global community are facing tremendous challenges and we cannot predict how this dynamic situation will evolve or the impact it will have on the company. For further information on the potential impact to the company of COVID-19, see the section entitled “Risk Factors” in our Quarterly Report on Form 10-Q for the pending competition.quarter ended March 31, 2020.
U.S. Political and Economic Environment
Since the filing of our 20182019 Annual Report on Form 10-K, full year appropriations for FY 2019 were enacted for all remaining U.S. government agencies and the President proposed an FY 2020released his budget requesting $750request for fiscal year 2021 (FY21) on February 10, 2020. The FY21 budget request includes $746 billion for national security.security, which will be the subject of debate in Congress. The President’sFY21 budget request addresses various capabilities highlighted in the U.S. National Security Strategy, the National Defense Strategy and the Missile Defense Review. On August 2, 2019, the Bipartisan Budget Act of 2019 was enacted, increasing spending caps under the Budget Control Act (BCA) for FY 2020 and FY 2021, the final two fiscal years covered by the BCA, and suspending the debt ceiling through July 31, 2021. FY 2020 appropriations have not been enacted and on September 27, 2019, a continuing resolution was enacted to provide funding at FY 2019 levels through November 21, 2019. We believe our capabilities, particularly in space, missiles, missile defense, hypersonics, counter-hypersonics, low observable technologysurvivable aircraft and cybermission systems will allow us to continue to profitably growallow for long-term profitable growth in our business in support of our customers’ needs. Congress has enacted emergency COVID-19 relief bills addressing certain impacts of the pandemic and is continuing to consider other responses to the COVID-19 crisis.

-25-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

CONSOLIDATED OPERATING RESULTS
Selected financial highlights are presented in the table below:
Three Months Ended September 30 % Nine Months Ended September 30 %Three Months Ended June 30 % Six Months Ended June 30 %
$ in millions, except per share amounts2019 2018 Change 2019 2018 Change2020 2019 Change 2020 2019 Change
Sales$8,475
 $8,085
 5 % $25,120
 $21,939
 14 %$8,884
 $8,456
 5% $17,504
 $16,645
 5%
Operating costs and expenses7,524
 6,913
 9 % 22,287
 19,102
 17 %7,890
 7,510
 5% 15,576
 14,763
 6%
Operating costs and expenses as a % of sales88.8% 85.5%   88.7% 87.1%  88.8% 88.8%   89.0% 88.7%  
Operating income951
 1,172
 (19)% 2,833
 2,837
  %994
 946
 5% 1,928
 1,882
 2%
Operating margin rate11.2% 14.5%   11.3% 12.9%  11.2% 11.2%   11.0% 11.3%  
Federal and foreign income tax expense122
 120
 2 % 460
 466
 (1)%198
 167
 19% 383
 338
 13%
Effective income tax rate11.6% 8.8%   14.8% 14.0%  16.5% 16.2%   17.0% 16.4%  
Net earnings933
 1,244
 (25)% 2,657
 2,873
 (8)%1,005
 861
 17% 1,873
 1,724
 9%
Diluted earnings per share$5.49
 $7.11
 (23)% $15.60
 $16.40
 (5)%$6.01
 $5.06
 19% $11.16
 $10.11
 10%
Sales
Current Quarter
ThirdSecond quarter 20192020 sales increased $390$428 million or 5 percent, primarily due to higher sales at Space Systems and Aeronautics Systems.
Year to Date
Year to date 2020 sales increased $859 million, or 5 percent, due to higher sales at all four sectors.
Year to Date
Year to date 2019 sales increased $3.2 billion due to the addition
-20-

Table of a full nine months of Innovation Systems sales as well as higher sales at Aerospace Systems and Mission Systems, partially offset by lower sales at Technology Services.Contents

NORTHROP GRUMMAN CORPORATION                        

See “Segment Operating Results” below for further information by segment and “Product and Service Analysis” for product and service detail. See Note 119 to the financial statements for information regarding the company’s sales by customer type, contract type and geographic region for each of our segments.
Operating Income and Margin Rate
Current Quarter
ThirdSecond quarter 20192020 operating income decreased $221increased $48 million, and operating margin rate declined to 11.2or 5 percent, primarily due to higheran increase in segment operating income and lower unallocated corporate expense, a decrease inexpense. Second quarter 2020 operating margin rate of 11.2 percent was comparable to the net FAS (service)/CAS pension adjustment and lower segment operating income. Third quarter 2018 unallocated corporate expense included a $223 million benefit recognized for the finalization of certain prior year cost claims.period.
ThirdSecond quarter 20192020 general and administrative (G&A) costs as a percentage of sales decreasedof 9.4 percent was comparable to 9.2 percent from 10.1 percent primarily due to cost management, including cost synergies realized in connection with the 2018 acquisition of Orbital ATK, and higher sales.prior year period.
Year to Date
Year to date 20192020 operating income increased $46 million, or 2 percent, primarily due to an increase in segment operating income and lower unallocated corporate expense. Year to date 2020 operating margin rate declined to 11.0 percent reflecting a lower segment operating margin rate, partially offset by a decrease in unallocated corporate expense.
Year to date 2020general and administrative (G&A) costs as a percentage of sales of 9.3 percent was comparable to the prior year period and reflects a $365 million increase in segment operating income, including a full nine months of operating income from Innovation Systems, offsetperiod.
See “Segment Operating Results” below for further information by higher unallocated corporate expense, largely due to the previously noted 2018 cost claim benefit, and a decrease in the net FAS (service)/CAS pension adjustment. Operating margin rate declined to 11.3 percent principally due to the increase in unallocated corporate expense and decrease in the net FAS (service)/CAS pension adjustment.
Year to date 2019 G&A costs as a percentage of sales decreased to 9.2 percent from 10.3 percent primarily due to cost management, including the cost synergies described above.
segment. For information regarding product and service operating costs and expenses, see “Product and Service Analysis” below.
Federal and Foreign Income Taxes
Current Quarter
The thirdsecond quarter 20192020 effective tax rate increasedof 16.5 percent was generally comparable to 11.6 percent from 8.8 percent in the third quarter of 2018.prior year period. See Note 43 to the financial statements for additional information.

-26-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Year to Date
The year to date 20192020 effective tax rate increased to 14.817.0 percent from 14.016.4 percent in the prior year period.period primarily due to an increase in reserves for uncertain tax positions. See Note 43 to the financial statements for additional information.
Net Earnings
Current Quarter
ThirdSecond quarter 20192020 net earnings decreased $311increased $144 million, or 17 percent, primarily due to lower operating income as well as a $70$103 million decreaseincrease in our FAS (non-service) pension benefit.benefit, a $48 million increase in operating income and a $41 million increase in Other, net, largely due to higher returns on marketable securities related to our non-qualified benefit plans, partially offset by a $31 million increase in tax expense.
Year to Date
Year to date 20192020 net earnings decreased $216increased $149 million, or 9 percent, primarily due to a $182$205 million decreaseincrease in our FAS (non-service) pension benefit and a $58$46 million increase in operating income, partially offset by a $53 million decrease in other,Other, net, principallylargely due to lower interest income.returns on marketable securities related to our non-qualified benefit plans, and a $45 million increase in tax expense.
Diluted Earnings Per Share
Current Quarter
ThirdSecond quarter 20192020 diluted earnings per share decreased $1.62, or 23increased 19 percent, principally reflecting a 2517 percent decreaseincrease in net earnings.earnings and a 2 percent reduction in weighted-average diluted shares outstanding.
Year to Date
Year to date 20192020 diluted earnings per share decreased $0.80, or 5increased 10 percent, reflecting an 8a 9 percent decreaseincrease in net earnings partially offset byand a 32 percent reduction in weighted-average diluted shares outstanding.
SEGMENT OPERATING RESULTS
Basis of Presentation
Effective January 1, 2020, the company reorganized its operating sectors to better align the company’s broad portfolio to serve its customers’ needs. The company is aligned in four operatingnew sectors, which also comprise our reportable segments: Aerospacesegments, are Aeronautics Systems, InnovationDefense Systems, Mission Systems and Technology Services.Space Systems. This realignment is reflected in the accompanying financial information.

-21-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Beginning in the second quarter of 2020, the company no longer considers certain unallowable costs as part of management’s evaluation of segment operating performance. As described above, on the effective date of the Merger, we established Innovation Systems as a new, fourth business sector. Theresult, certain unallowable costs, which were previously included in segment operating results, below include salesare now reported in Unallocated corporate expense within operating income. This change has been applied retrospectively in the accompanying financial information. See Notes 1 and operating income for Innovation Systems subsequent9 to the Merger date.financial statements and Part II, Item 5 for further information regarding the impact of this change on the company’s current and prior period segment information.
We present our sectors in the following business areas, which are reported in a manner reflecting core capabilities:
AerospaceAeronautics Systems InnovationDefense Systems Mission Systems Technology ServicesSpace Systems
Autonomous Systems DefenseBattle Management & Missile Systems Advanced CapabilitiesAirborne Sensors & Networks Global Logistics and ModernizationLaunch & Strategic Missiles
Manned Aircraft Flight SystemsMission Readiness Cyber and ISRGlobal Services
Space& Intelligence Mission Solutions Space Systems
 Maritime/Land Systems & Sensors and Processing
Navigation, Targeting & Survivability  
Effective January 1, 2019, the former Advanced Defense Services and System Modernization and Services business areas of Technology Services were merged to create the Global Services business area. This change had no impact on the segment operating results of Technology Services as a whole.
In September 2019, the company announced changes effective January 1, 2020, which are intended to better align the company’s broad portfolio to serve its customers’ needs. There will be four sectors: Aeronautics Systems, Defense Systems, Mission Systems and Space Systems. This realignment is not reflected in any of the accompanying financial information.
This section discusses segment sales, operating income and operating margin rates. In evaluating segment operating performance, we look primarily at changes in sales and operating income. 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 below first focuses on our four segments before distinguishing between products and services. Changes in sales are generally described in terms of volume, while changes in margin rates are generally described in terms of performance and/or contract mix. For purposes of this discussion, volume generally refers to increases or decreases in sales or cost from production/service activity levels and performance generally refers to non-volume related changes in profitability. Contract mix generally refers to changes in the ratio of contract type and/or lifecycle (e.g., cost-type, fixed-price, development, production, and/or sustainment).

-27-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Segment Operating Income and Margin Rate
Segment operating income, as reconciled in the table below, and segment operating margin rate (segment operating income divided by sales) are non-GAAP (accounting principles generally accepted in the United States of America) measures that reflect total earnings from our four segments, including allocated pension expense we have recognized under the Federal Acquisition Regulation (FAR) and the related U.S. Government Cost Accounting Standards (CAS), and excluding FAS pension expense and unallocated corporate items (certain corporate-level expenses, which are not considered allowable or allocable under applicable CAS or FAR, and costs not considered part of management’s evaluation of segment operating performance). These non-GAAP measures may be useful to investors and other users of our financial statements as supplemental measures in evaluating the financial performance and operational trends of our sectors. These measures may not be defined and calculated by other companies in the same manner and should not be considered in isolation or as alternatives to operating results presented in accordance with GAAP.
 Three Months Ended September 30 % Nine Months Ended September 30 %
$ in millions2019 2018 Change 2019 2018 Change
Segment operating income$940
 $979
 (4)% $2,885
 $2,520
 14 %
Segment operating margin rate11.1% 12.1%   11.5% 11.5%  
CAS pension expense223
 278
 (20)% 622
 741
 (16)%
Less: FAS (service) pension expense(92) (102) (10)% (276) (301) (8)%
Net FAS (service)/CAS pension adjustment131
 176
 (26)% 346
 440
 (21)%
Intangible asset amortization and PP&E step-up depreciation(98) (97) 1 % (292) (127) NM
Other unallocated corporate (expense) income(22) 114
 NM
 (106) 4
 NM
Unallocated corporate (expense) income(120) 17
 NM
 (398) (123) NM
Operating income$951
 $1,172
 (19)% $2,833
 $2,837
  %
Current Quarter
Third quarter 2019 segment operating income decreased $39 million, or 4 percent, primarily due to lower segment operating income at Aerospace Systems, partially offset by higher operating income at Technology Services. Segment operating margin rate decreased to 11.1 percent principally due to a lower operating margin rate at Aerospace Systems.
Year to Date
Year to date 2019 segment operating income increased $365 million, or 14 percent, primarily due to the inclusion of a full nine months of operating income from Innovation Systems as well as higher operating income at Mission Systems and Technology Services. Segment operating margin rate of 11.5 percent was comparable to the prior year period.
Net FAS (service)/CAS Pension Adjustment
The decrease in our third quarter and year to date 2019 net FAS (service)/CAS pension adjustment is primarily due to lower CAS expense largely as a result of changes in actuarial assumptions as of December 31, 2018. The year to date decrease is partially offset by increased CAS expense due to the addition of Innovation Systems.
Unallocated Corporate (Expense) Income
Current Quarter
The increase in third quarter 2019 unallocated corporate expense is primarily due to the absence in 2019 of a $223 million benefit recognized for the finalization of certain prior year cost claims, partially offset by $57 million of lower deferred state taxes and legal expenses.
Year to Date
The increase in year to date 2019 unallocated corporate expense is primarily due to the absence of the 2018 cost claim benefit noted above and $165 million of higher intangible asset amortization and PP&E step-up depreciation. This increase was partially offset by $61 million of lower deferred state taxes and legal expenses as well as $29 million of non-recurring Merger-related transaction costs in 2018.
 Three Months Ended June 30 % Six Months Ended June 30 %
$ in millions2020 2019 Change 2020 2019 Change
Segment operating income$1,031
 $993
 4 % $1,998
 $1,971
 1 %
Segment operating margin rate11.6% 11.7%   11.4% 11.8%  
CAS pension expense205
 199
 3 % 412
 399
 3 %
Less: FAS (service) pension expense(102) (92) 11 % (204) (184) 11 %
Net FAS (service)/CAS pension adjustment103
 107
 (4)% 208
 215
 (3)%
Intangible asset amortization and PP&E step-up depreciation(77) (98) (21)% (159) (194) (18)%
Other unallocated corporate expense(63) (56) 13 % (119) (110) 8 %
Unallocated corporate expense(140) (154) (9)% (278) (304) (9)%
Operating income$994
 $946
 5 % $1,928
 $1,882
 2 %

-28--22-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Current Quarter
Second quarter 2020 segment operating income increased $38 million, or 4 percent, and reflects higher segment operating income at all four sectors. Segment operating margin rate was comparable to the prior year period and reflects lower segment operating margin rates at Space Systems and Aeronautics Systems, partially offset by a higher segment operating margin rate at Defense Systems.
Year to Date
Year to date 2020 segment operating income increased $27 million, or 1 percent, and reflects higher operating income at Mission Systems and Space Systems, partially offset by lower operating income at Aeronautics Systems. Segment operating margin rate decreased to 11.4 percent primarily due to a lower segment operating margin rate at Aeronautics Systems.
Net Estimate-at-Completion (EAC)FAS (service)/CAS Pension Adjustment
The second quarter 2020 and year to date 2020 net FAS (service)/CAS pension adjustments were comparable to the prior year period and reflect changes in actuarial assumptions as of December 31, 2019.
Unallocated Corporate Expense
Current Quarter
The decrease in second quarter 2020 unallocated corporate expense is primarily due to $21 million of lower intangible asset amortization and PP&E step-up depreciation.
Year to Date
The decrease in year to date 2020 unallocated corporate expense is primarily due to $35 million of lower intangible asset amortization and PP&E step-up depreciation.
Net EAC Adjustments - We record changes in estimated contract earnings at completion (net EAC adjustments) using the cumulative catch-up method of accounting. Net EAC adjustments can have a significant effect on reported sales and operating income and the aggregate amounts are presented in the table below:
Three Months Ended September 30 Nine Months Ended September 30Three Months Ended June 30 Six Months Ended June 30
$ in millions2019 2018 2019 20182020 2019 2020 2019
Favorable EAC adjustments$285
 $296
 $803
 $740
$241
 $283
 $517
 $518
Unfavorable EAC adjustments(160) (147) (382) (332)(129) (125) (281) (222)
Net EAC adjustments$125
 $149
 $421
 $408
$112
 $158
 $236
 $296
Net EAC adjustments by segment are presented in the table below:
Three Months Ended September 30 Nine Months Ended September 30Three Months Ended June 30 Six Months Ended June 30
$ in millions2019 2018 2019 20182020 2019 2020 2019
Aerospace Systems$13
 $80
 $117
 $229
Innovation Systems(1)
33
 16
 114
 16
Aeronautics Systems$22
 $59
 $34
 $110
Defense Systems39
 38
 61
 70
Mission Systems46
 37
 134
 132
59
 52
 138
 87
Technology Services40
 22
 71
 42
Space Systems(7) 16
 5
 37
Eliminations(7) (6) (15) (11)(1) (7) (2) (8)
Net EAC adjustments$125
 $149
 $421
 $408
$112
 $158
 $236
 $296
(1)
Amounts reflect EAC adjustments after the percent complete on Innovation Systems contracts was reset to zero as of the Merger date.
For purposes of the discussion in the remainder of this Segment Operating Results section, references to operating income and operating margin rate reflect segment operating income and segment operating margin rate, respectively.
AEROSPACE SYSTEMSThree Months Ended September 30 % Nine Months Ended September 30 %
$ in millions2019 2018 Change 2019 2018 Change
Sales$3,458
 $3,282
 5 % $10,344
 $9,899
 4 %
Operating income324
 376
 (14)% 1,067
 1,074
 (1)%
Operating margin rate9.4% 11.5%   10.3% 10.8%  
Sales
Current Quarter
Third quarter 2019 sales increased 5 percent, due to higher sales in all three business areas. Manned aircraft sales reflect higher volume on the E-2 program and a higher rate of F-35 production activity, partially offset by lower B-2 sales. Space sales reflect higher volume on Next Generation Overhead Persistent Infrared (Next Gen OPIR) programs. Autonomous Systems sales increased due to higher volume on multiple programs, including Global Hawk, partially offset by lower NATO AGS volume as that program nears completion.
Year to Date
Year to date 2019 sales increased 4 percent due in large part to higher volume on restricted programs. Manned Aircraft sales reflect a higher rate of F-35 production activity and higher volume on the E-2 program. Space sales reflect higher volume on Next Gen OPIR programs. Autonomous Systems sales include lower NATO AGS volume as that program nears completion.
Operating Income
Current Quarter
Third quarter 2019 operating income declined to $324 million and operating margin rate decreased to 9.4 percent principally due to lower net favorable EAC adjustments. This reflects the timing of favorable adjustments as well as unfavorable adjustments for the B-2 Defensive Management System Modernization program and delays in production for certain commercial space components.

-29--23-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

AERONAUTICS SYSTEMSThree Months Ended June 30 % Six Months Ended June 30 %
$ in millions2020 2019 Change 2020 2019 Change
Sales$2,925
 $2,721
 7% $5,768
 $5,539
 4 %
Operating income310
 299
 4% 573
 610
 (6)%
Operating margin rate10.6% 11.0%   9.9% 11.0%  
Sales
Current Quarter
Second quarter 2020 sales increased $204 million, or 7 percent, due to higher sales in both Manned Aircraft and Autonomous Systems. Higher volume on restricted programs, E-2D and Triton were partially offset by a COVID-19-related slowdown of F-35 production activity.
Year to Date
Year to date 2019 operating income decreased $72020 sales increased $229 million, or 14 percent, due to higher sales in both Manned Aircraft and Autonomous Systems. Higher volume on restricted programs and E-2D were partially offset by a COVID-19-related slowdown of F-35 production activity and lower volume on the B-2 Defensive Management System Modernization program as it nears completion.
Operating Income
Current Quarter
Second quarter 2020 operating margin rate, which more than offsetincome increased $11 million, or 4 percent, primarily due to higher sales. Operating margin rate decreased to 10.310.6 percent from 10.811.0 percent, primarilyprincipally due to lower net favorable EAC adjustments onat Autonomous Systems as well as changes in contract mix at Manned Aircraft, and Space programs.partially offset by a $21 million benefit recognized in connection with the resolution of a government accounting matter.
Year to Date
Year to date 2020 operating income decreased $37 million, or 6 percent, principally due to a lower operating margin rate. Operating margin rate decreased to 9.9 percent from 11.0 percent, principally due to lower net favorable EAC adjustments at Autonomous Systems as well as changes in contract mix at Manned Aircraft.
INNOVATION SYSTEMSThree Months Ended September 30 % Nine Months Ended September 30 %
$ in millions2019 2018 Change 2019 2018 Change
Sales$1,584
 $1,415
 12% $4,520
 $1,815
 NM
Operating income164
 161
 2% 500
 200
 NM
Operating margin rate10.4% 11.4%   11.1% 11.0%  
The sales and operating income above reflect the operating results of Innovation Systems subsequent to the Merger date.In our year to date comparative discussion below, we reference pro forma sales prepared in accordance with Article 11 of Regulation S-X and computed as if Orbital ATK had been included in our results in the year prior to the Merger, or as of January 1, 2017. Refer to Note 2 to the financial statements for additional supplemental consolidated pro forma financial information. This pro forma financial information should not be considered indicative of the results that would have actually occurred if the Merger had been consummated on January 1, 2017, nor are they indicative of future results.
DEFENSE SYSTEMSThree Months Ended June 30 % Six Months Ended June 30 %
$ in millions2020 2019 Change 2020 2019 Change
Sales$1,886
 $1,916
 (2)% $3,767
 $3,684
 2 %
Operating income217
 212
 2 % 415
 416
  %
Operating margin rate11.5% 11.1%   11.0% 11.3%  
Sales
Current Quarter
ThirdSecond quarter 20192020 sales decreased $30 million, or 2 percent, due to lower volume in Battle Management & Missile Systems, partially offset by higher volume on Mission Readiness programs. Battle Management & Missile Systems sales decreased principally due to lower volume on programs nearing completion, including an international weapons program and several small caliber ammunition programs, partially offset by higher volume on the Guided Multiple Launch Rocket System (GMLRS), the Advanced Anti-Radiation Guided Missile (AARGM) program and other missile products. Mission Readiness sales increased 12primarily due to higher restricted volume, partially offset by lower volume on the Hunter sustainment program as it nears completion.
Year to Date
Year to date 2020 sales increased $83 million or 2 percent, due to higher sales in all three business areas. Spaceboth Battle Management & Missile Systems sales reflect higher volume on national security satellite systems. Defenseand Mission Readiness. Battle Management & Missile Systems sales increased primarily due to higher volume on precision munitionsGMLRS, AARGM and armamentother missile products, as well as tactical missiles and subsystems, including the Advanced Anti-Radiation Guided Missile-Extended Range (AARGM-ER) program. Flight Systems sales reflect higher volume on military and commercial aerospace structures.
Year to Date
Year to date 2019 sales increased $403 million, or 10 percent, compared with year to date 2018 pro forma sales of $4.1 billion due to higher sales in all three business areas. Flight Systems sales reflect higher volume on military aerospace structures and launch vehicles, principally Ground-based Midcourse Defense. Defense Systems sales increased primarily due to higher volume on tactical missiles and subsystems, including AARGM-ER, and precision munitions and armament products. Space Systems sales reflect higher volume on national security satellite systems.
Operating Income
Current Quarter
Third quarter 2019 operating income increased 2 percent primarily due to higher sales, partially offset by a lower operating margin rate of 10.4 percent. The prior period operating margin rate reflects favorable indirect rate performance and recovery of an insurance claim.
Year to Date
Year to date 2019 operating income totaled $500 million and operating margin rate was 11.1 percent. Year to date results benefited from the timing of favorable negotiations on certain commercial contracts.
MISSION SYSTEMSThree Months Ended September 30 % Nine Months Ended September 30 %
$ in millions2019 2018 Change 2019 2018 Change
Sales$3,029
 $2,911
 4 % $9,043
 $8,668
 4%
Operating income398
 399
  % 1,189
 1,122
 6%
Operating margin rate13.1% 13.7%   13.1% 12.9%  
Sales
Current Quarter
Third quarter 2019 sales increased 4 percent due to higher sales in all three business areas. Advanced Capabilities sales increased primarily due to higher volume on marine systems. Cyber and ISR sales reflect higher volume on space and restricted programs. Sensors and Processingan international weapons program as it nears completion. Mission Readiness sales increased principally due to higher restricted volume, on airborne radar and electronic warfare programs, partially offset by lower volume from targeting pods.on the Hunter sustainment program as it nears completion.

-30--24-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Operating Income
Current Quarter
Second quarter 2020 operating income increased $5 million, or 2 percent, primarily due to a higher operating margin rate. Operating margin rate increased to 11.5 percent from 11.1 percent primarily due to improved performance on Mission Readiness programs.
Year to Date
Year to date 2020 operating income was comparable to the prior year period. Operating margin rate decreased to 11.0 percent from 11.3 percent primarily due to favorable adjustments on certain small caliber ammunition programs in the first quarter of 2019, partially offset by improved performance on Mission Readiness programs.
MISSION SYSTEMSThree Months Ended June 30 % Six Months Ended June 30 %
$ in millions2020 2019 Change 2020 2019 Change
Sales$2,446
 $2,404
 2% $4,793
 $4,614
 4%
Operating income347
 338
 3% 700
 661
 6%
Operating margin rate14.2% 14.1%   14.6% 14.3%  
Sales
Current Quarter
Second quarter 2020 sales increased 4$42 million, or 2 percent, primarily due to higher volume on Airborne Sensors & Networks programs, partially offset by lower volume on Cyber & Intelligence Mission Solutions programs. Airborne Sensors & Networks sales in all three business areas.increased primarily due to higher airborne radar volume, including on the Multi-role Electronically Scanned Array (MESA) and Scalable Agile Beam Radar (SABR) programs. Cyber & Intelligence Mission Solutions sales decreased principally due to lower volume on an intelligence program as it nears completion.
Year to Date
Year to date 2020 sales increased $179 million, or 4 percent, primarily due to higher volume on Airborne Sensors & Networks and ProcessingMaritime/Land Systems & Sensors programs, partially offset by lower volume on Cyber & Intelligence Mission Solutions. Airborne Sensors & Networks sales increased principally due to higher airborne radar volume, including on the MESA, SABR and F-35 programs. Maritime/Land Systems & Sensors sales increased primarily due to higher volume on airborne radarmarine systems and restricted programs, partially offset by lower volume on communications programs.international volume. Cyber and ISR& Intelligence Mission Solutions sales increaseddecreased principally due to higherlower volume on space and restricted programs. Advanced Capabilities sales increased principally due to higher volume on restricted programs and marine systems, partially offset by lower missile defense volume, primarily related to the JRDC program.an intelligence program as it nears completion.
Operating Income
Current Quarter
ThirdSecond quarter 20192020 operating income increased $9 million, or 3 percent, principally due to higher sales. Operating margin rate was comparable to the prior year and operating margin rate was 13.1 percent compared with 13.7 percent in the prior year period. The primary driver of the margin rate change was a higher level of indirect rate benefits in the third quarter of 2018. Third quarter 2019 results reflect continued strong performance at Sensors and Processing, improved performance at Advanced Capabilities, and lower performance on Cyber and ISR programs.
Year to Date
Year to date 20192020 operating income increased $39 million, or 6 percent, due to higher sales and a higher operating margin rate. Operating margin rate increased to 13.114.6 percent from 14.3 percent primarily due to improved performance on Advanced CapabilitiesAirborne Sensors & Networks and Sensors and ProcessingCyber & Intelligence Mission Solutions programs, partially offset by lower performance on Cybernet favorable adjustments and ISR programs.changes in contract mix at Navigation, Targeting & Survivability.
TECHNOLOGY SERVICESThree Months Ended September 30 % Nine Months Ended September 30 %
SPACE SYSTEMSThree Months Ended June 30 % Six Months Ended June 30 %
$ in millions2019 2018 Change 2019 2018 Change2020 2019 Change 2020 2019 Change
Sales$1,067
 $1,040
 3% $3,088
 $3,232
 (4)%$2,048
 $1,788
 15% $3,996
 $3,589
 11%
Operating income136
 111
 23% 351
 328
 7 %209
 193
 8% 411
 383
 7%
Operating margin rate12.7% 10.7%   11.4% 10.1%  10.2% 10.8%   10.3% 10.7%  
Sales
Current Quarter
ThirdSecond quarter 20192020 sales increased 3$260 million, or 15 percent, due to higher sales in both business areas. Global LogisticsSpace and ModernizationLaunch & Strategic Missiles. Space sales increased primarily due towere driven by higher volume on restricted programs, Next Generation Overhead Persistent Infrared Radar (Next Gen OPIR) and the Arctic Satellite Broadband Mission (ASBM) program. Launch &

-25-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Strategic Missiles sales reflect higher volume on electronic systems sustainmenthypersonics and launch vehicle programs, partially offset by lower volume on autonomous systems support programs. Global Services sales increased principally due to higher volume on defense services programs and a civil program, partially offset by the completion of a state and local services contract in 2018.Ground-based Midcourse Defense (GMD) program.
Year to Date
Year to date 20192020 sales decreased 4increased $407 million, or 11 percent, primarily due to program completions acrosshigher sales in both Space and Launch & Strategic Missiles. Space sales were driven by higher volume on restricted programs, Next Gen OPIR and ASBM. Launch & Strategic Missiles sales reflect higher volume on hypersonics programs and the sector. Global Services sales declined principally due to the completions in 2018 of a state and local services contract and of certain defense services contracts, largely the JRDCGround Based Strategic Deterrent (GBSD) Technology Maturation Risk Reduction (TMRR) program, partially offset by higherlower volume on a civil program. Global Logistics and Modernization sales declined primarily due to the completion in 2018 of a manned aircraft sustainment program, KC-10, partially offset by higher volume on electronic systems sustainment programs.GMD.
Operating Income
Current Quarter
ThirdSecond quarter 20192020 operating income increased 23$16 million, or 8 percent, and operatingprimarily due to higher sales. Operating margin rate increaseddecreased to 12.710.2 percent from 10.8 percent principally due to improved performancedelays in both business areas, including a favorable adjustment on a Global Logistics and Modernization sustainment program.production for certain commercial space components.
Year to Date
Year to date 20192020 operating income increased $28 million, or 7 percent, and operatingprimarily due to higher sales. Operating margin rate increaseddecreased to 11.410.3 percent from 10.7 percent principally due to improved performancedelays in both business areas, including aproduction for certain commercial space components and the timing of favorable adjustmentnegotiations on a Global Logistics and Modernization sustainment program.certain commercial contracts recognized in the first quarter of 2019.

-31--26-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

PRODUCT AND SERVICE ANALYSIS
The following table presents product and service sales and operating costs and expenses by segment:
Three Months Ended September 30 Nine Months Ended September 30Three Months Ended June 30 Six Months Ended June 30
$ in millions20192018 2019201820202019 20202019
Segment Information:SalesOperating Costs and ExpensesSalesOperating Costs and Expenses SalesOperating Costs and ExpensesSalesOperating Costs and ExpensesSalesOperating Costs and ExpensesSalesOperating Costs and Expenses SalesOperating Costs and ExpensesSalesOperating Costs and Expenses
Aerospace Systems    
Aeronautics Systems     
Product$2,956
$2,691
$2,775
$2,457
 $8,783
$7,915
$8,339
$7,436
$2,512
$2,247
$2,301
$2,068
 $4,921
$4,446
$4,706
$4,210
Service502
443
507
449
 1,561
1,362
1,560
1,389
384
342
396
333
 792
700
785
676
Innovation Systems   
Intersegment eliminations29
26
24
21
 55
49
48
43
Total Aeronautics Systems2,925
2,615
2,721
2,422
 5,768
5,195
5,539
4,929
Defense Systems   
Product1,451
1,304
1,246
1,101
 4,019
3,577
1,600
1,418
753
676
697
626
 1,523
1,380
1,318
1,183
Service133
116
169
153
 501
443
215
197
953
831
1,055
931
 1,893
1,657
2,035
1,789
Intersegment eliminations180
162
164
147
 351
315
331
296
Total Defense Systems1,886
1,669
1,916
1,704
 3,767
3,352
3,684
3,268
Mission Systems      
Product1,887
1,625
1,818
1,582
 5,631
4,826
5,349
4,624
1,646
1,388
1,574
1,332
 3,154
2,662
2,956
2,492
Service1,142
1,006
1,093
930
 3,412
3,028
3,319
2,922
616
554
666
598
 1,279
1,124
1,297
1,156
Technology Services   
Intersegment eliminations184
157
164
136
 360
307
361
305
Total Mission Systems2,446
2,099
2,404
2,066
 4,793
4,093
4,614
3,953
Space Systems   
Product143
131
132
119
 406
373
356
325
1,571
1,402
1,308
1,163
 3,060
2,727
2,628
2,330
Service924
800
908
810
 2,682
2,364
2,876
2,579
449
413
459
412
 882
810
920
838
Intersegment eliminations28
24
21
20
 54
48
41
38
Total Space Systems2,048
1,839
1,788
1,595
 3,996
3,585
3,589
3,206
Segment Totals       
Total Product$6,437
$5,751
$5,971
$5,259
 $18,839
$16,691
$15,644
$13,803
$6,482
$5,713
$5,880
$5,189
 $12,658
$11,215
$11,608
$10,215
Total Service2,701
2,365
2,677
2,342
 8,156
7,197
7,970
7,087
2,402
2,140
2,576
2,274
 4,846
4,291
5,037
4,459
Intersegment eliminations(663)(581)(563)(495) (1,875)(1,653)(1,675)(1,471)
Total segment(1)
$8,475
$7,535
$8,085
$7,106
 $25,120
$22,235
$21,939
$19,419
Total Segment(1)
$8,884
$7,853
$8,456
$7,463
 $17,504
$15,506
$16,645
$14,674
(1) 
A reconciliation of segment operating income to total operating income is included in “Segment Operating Results.”
Product Sales and Costs
Current Quarter
ThirdSecond quarter 20192020 product sales increased $466$602 million, or 810 percent. The increase was primarily due to higher product sales in all three business areason restricted programs and Next Gen OPIR at InnovationSpace Systems and higher product sales on restricted programs and E-2D at Aeronautics Systems.
Second quarter 2020 product costs increased $524 million, or 10 percent, consistent with the higher product sales described above.
Year to Date
Year to date 2020 product sales increased $1.1 billion, or 9 percent, principally due to higher volume on restricted E-2programs and Next Gen OPIR at Space Systems, restricted programs and E-2D at Aeronautics Systems, missile products at Defense Systems and airborne radar and restricted programs at AerospaceMission Systems.
Third quarter 2019Year to date 2020 product costs increased $492 million,$1.0 billion, or 910 percent, consistent with the higher product sales described above and principally reflects a lower product margin at Aerospace Systems.
Year to Date
Year to date 2019 product sales increased $3.2 billion, or 20 percent. The increase was primarilyAeronautics Systems due to a full nine months of product sales from Innovation Systems and higher volume on restricted, E-2 and F-35 programs at Aerospace Systems.
Year to date 2019 product costs increased $2.9 billion, or 21 percent, consistent with the higher product sales described above and reflects a lower product margin at Aerospace Systems.net favorable EAC adjustments.

-32--27-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Service Sales and Costs
Current Quarter
ThirdSecond quarter 20192020 service sales increased $24decreased $174 million, or 1 percent. The increase was7 percent, primarily due to highera shift toward more product content in the lifecycle of several programs at Defense Systems and completion of certain service salesprograms at Mission Systems.
ThirdSecond quarter 20192020 service costs increased $23decreased $134 million, or 16 percent, consistent with the higherlower service sales described above.
Year to Date
Year to date 20192020 service sales increased $186decreased $191 million, or 2 percent. The increase was4 percent, primarily driven by a full nine months of service sales from Innovation Systems and higher service sales at Mission Systems, partially offset by lower service sales at Technology Services principally due to a shift toward more product content in the lifecycle of several program completions.programs at Defense Systems.
Year to date 20192020 service costs increased $110decreased $168 million, or 24 percent, consistent with the higherlower service sales described above.
BACKLOG
Backlog represents the future sales we expect to recognize on firm orders received by the company and is equivalent to the company’s remaining performance obligations at the end of each period. It comprises both funded backlog (firm orders for which funding is authorized and appropriated) and unfunded backlog. Unexercised contract options and indefinite delivery indefinite quantity (IDIQ) contracts are not included in backlog until the time thean option or IDIQ task order is exercised or awarded. Backlog is converted into sales as costs are incurred or deliveries are made.
Backlog consisted of the following as of SeptemberJune 30, 20192020 and December 31, 2018:2019:
 September 30, 2019 December 31, 2018   June 30, 2020 December 31, 2019  
$ in millions Funded Unfunded Total
Backlog
 
Total
Backlog
 % Change in 2019 Funded Unfunded Total
Backlog
 
Total
Backlog
 % Change in 2020
Aerospace Systems $12,310
 $21,601
 $33,911
 $26,440
 28 %
Innovation Systems 5,835
 3,758
 9,593
 8,207
 17 %
Aeronautics Systems $12,163
 $12,556
 $24,719
 $26,021
 (5)%
Defense Systems 6,245
 1,728
 7,973
 8,481
 (6)%
Mission Systems 10,952
 7,112
 18,064
 15,408
 17 % 9,548
 3,997
 13,545
 14,226
 (5)%
Technology Services 2,862
 574
 3,436
 3,445
  %
Space Systems 5,908
 17,903
 23,811
 16,112
 48 %
Total backlog $31,959
 $33,045
 $65,004
 $53,500
 22 % $33,864
 $36,184
 $70,048
 $64,840
 8 %
New Awards
ThirdSecond quarter and year to date 20192020 net awards totaled $10.1$14.8 billion and $35.9$22.7 billion, respectively, and backlog increased to $65.0 billion as of September 30, 2019.totaled $70.0 billion. Significant second quarter new awards in the third quarter include $1.4$7.4 billion to deliver an additional nine E-2D Advanced Hawkeye aircraft and related equipment to Japan, $608 million for space restricted programs, $504 million$1.9 billion for the F-35 program, $481 millionNext Gen OPIR, $0.5 billion for the Triton programE-2D, $0.4 billion for four commercial satellites and $312 million$0.3 billion for targets and countermeasures used to test the Ballistic Missile Defense System.Triton.
LIQUIDITY AND CAPITAL RESOURCES
We endeavor to ensure the most efficient conversion of operating income into cash for deployment in our business and to maximizeincrease shareholder value through cash deployment activities. In addition to our cash position, we use various financial measures to assist in capital deployment decision-making, including cash provided by operating activities and free cash flow, a non-GAAP measure described in more detail below.
At June 30, 2020, we had $4.2 billion in cash and cash equivalents. In March 2020, we issued $2.25 billion of unsecured senior notes to help preserve financial flexibility in light of uncertainty resulting from the COVID-19 pandemic. We intend to use those proceeds for general corporate purposes, which may include debt repayment and working capital. In April 2020, we entered into a one-year $500 million uncommitted credit facility to provide an additional source of potential financing.
The Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) established a program with provisions to allow U.S. companies to defer the employer’s portion of social security taxes between March 27, 2020 and December 31, 2020 and pay such taxes in two installments in 2021 and 2022. The CARES Act also provided for a deferral of certain estimated income tax payments by extending the deadline for amounts due in the second quarter to July 15, 2020. Under Section 3610, the CARES Act also authorized the government to reimburse qualifying contractors for certain costs of providing paid leave to employees as a result of COVID-19. The company has begun

-28-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

to seek, and anticipates continuing to seek, recovery for certain COVID-19-related costs under Section 3610 of the CARES Act and through our contract provisions. In addition, the U.S. Department of Defense (DoD) has, to date, taken steps to increase the rate for certain progress payments from 80 percent to 90 percent for costs incurred and work performed on relevant contracts. We believe these actions should continue to mitigate some COVID-19-related negative impacts to our operating cash flows during the remainder of the year.
Cash and cash equivalents and cash generated from operating activities, supplemented by borrowings under credit facilities, commercial paper and/or in the capital markets, if needed, are expected to be sufficient to fund our operations for at least the next 12 months.

-33-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Operating Cash Flow
The table below summarizes key components of cash flow provided by operating activities:
Nine Months Ended September 30 %Six Months Ended June 30 %
$ in millions2019 2018 Change2020 2019 Change
Net earnings$2,657
 $2,873
 (8)%$1,873
 $1,724
 9 %
Non-cash items(1)
1,041
 891
 17 %810
 709
 14 %
Changes in assets and liabilities:          
Trade working capital(1,392) (1,400) (1)%(898) (1,419) (37)%
Retiree benefits(422) (847) (50)%(473) (285) 66 %
Other, net(51) (67) (24)%32
 (35) (191)%
Net cash provided by operating activities$1,833
 $1,450
 26 %$1,344
 $694
 94 %
(1) 
Includes depreciation and amortization, non-cash lease expense, stock based compensation expense and deferred income taxes.
Year to date 20192020 cash provided by operating activities increased $383$650 million principally due to a $250 million voluntary pre-tax pension contribution ($163 million after-tax) made in the third quarter of 2018 and improved trade working capital.capital and higher net earnings. The improvement in trade working capital reflects CARES Act payroll tax deferrals and increased DoD progress payment rates, partially offset by acceleration of payments to suppliers and pass through of increased progress payments to suppliers.
Free Cash Flow
Free cash flow, as reconciled in the table below, is a non-GAAP measure defined as net cash provided by operating activities less capital expenditures, and may not be defined and calculated by other companies in the same manner. We use free cash flow as a key factor in our planning for, and consideration of, acquisitions, the payment of dividends and stock repurchases. This non-GAAP measure may be useful to investors and other users of our financial statements as a supplemental measure of our cash performance, but should not be considered in isolation, as a measure of residual cash flow available for discretionary purposes, or as an alternative to operating cash flows presented in accordance with GAAP.
The table below reconciles net cash provided by operating activities to free cash flow:
Nine Months Ended September 30 %Six Months Ended June 30 %
$ in millions2019 2018 Change2020 2019 Change
Net cash provided by operating activities$1,833
 $1,450
 26%$1,344
 $694
 94%
Less: capital expenditures(793) (786) 1%(541) (536) 1%
Free cash flow$1,040
 $664
 57%$803
 $158
 408%
Year to date 20192020 free cash flow increased $376$645 million principally due to the increase in net cash provided by operating activities.
Investing Cash Flow
Year to date 20192020 net cash used in investing activities decreasedwas comparable to $785 million from $8.4 billion principally due to $7.7 billion paid in 2018 for the acquisitionprior year period.

-29-

Table of Orbital ATK, net of cash acquired.Contents

NORTHROP GRUMMAN CORPORATION                        

Financing Cash Flow
Year to date 20192020 net cash provided by financing activities was $1.1 billion compared to net cash used in financing activities decreased to $1.5 billion from $3.0 billionof $650 million in 2019, principally due to lower$2.2 billion of net proceeds from the issuance of long-term debt and credit facility repaymentsin the first quarter of $2.0 billion,2020, partially offset by increasedhigher share repurchases and lower net borrowings on commercial paper.repurchases.
Credit Facilities, Commercial Paper and Financial Arrangements - See Note 76 to the financial statements for further information on our credit facilities, commercial paper and our use of standby letters of credit and guarantees.
Share Repurchases - See Note 32 to the financial statements for further information on our share repurchase programs.
Long-term Debt - See Note 54 to the financial statements for further information.

-34-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

CRITICAL ACCOUNTING POLICIES, ESTIMATES AND JUDGMENTS
There have been no material changes to our critical accounting policies, estimates or judgments from those discussed in our 20182019 Annual Report on Form 10-K.
ACCOUNTING STANDARDS UPDATES
See Note 1 to our financial statements for further information on accounting standards updates.
FORWARD-LOOKING STATEMENTS AND PROJECTIONS
This Form 10-Q and the information we are incorporating by reference contain statements that constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Words such as “will,” “expect,” “anticipate,” “intend,” “may,” “could,” “should,” “plan,” “project,” “forecast,” “believe,” “estimate,” “outlook,” “trends,” “goals” and similar expressions generally identify these forward-looking statements. Forward-looking statements include, among other things, statements relating to our future financial condition, results of operations and/or cash flows. Forward-looking statements are based upon assumptions, expectations, plans and projections that we believe to be reasonable when made, but which may change over time. These statements are not guarantees of future performance and inherently involve a wide range of risks and uncertainties that are difficult to predict. Specific risks that could cause actual results to differ materially from those expressed or implied in these forward-looking statements include, but are not limited to, those identified and discussed more fully in the section entitled “Risk Factors” in our 20182019 Annual Report on Form 10-K, in the section entitled “Risk Factors” in our Quarterly Report on Form 10-Q for the quarter ended March 31, 2020 and from time to time in our other filings with the Securities and Exchange Commission (SEC). These risks and uncertainties are amplified by the global COVID-19 pandemic, which has caused and will continue to cause significant challenges, instability and uncertainty. They include:
the impact of the COVID-19 outbreak or future epidemics on our business, including the potential for worker absenteeism, facility closures, work slowdowns or stoppages, supply chain disruptions, program delays, our ability to recover costs under contracts, changing government funding and acquisition priorities and processes, changing government payment rules and practices, and potential impacts on access to capital, the markets and the fair value of our assets;
our dependence on the U.S. government for a substantial portion of our business
significant delays or reductions in appropriations for our programs, and U.S. government funding and program support more broadly
investigations, claims, disputes, enforcement actions, litigation and/or litigationother legal proceedings
the use of estimates when accounting for our contracts and the effect of contract cost growth and/or changes in estimated contract revenues and costs
our exposure to additional risks as a result of our international business, including risks related to geopolitical and economic factors, suppliers, laws and regulations
the improper conduct of employees, agents, subcontractors, suppliers, business partners or joint ventures in which we participate and the impact on our reputation and our ability to do business and our financial position, results of operations and/or cash flows
cyber and other security threats or disruptions faced by us, our customers or our suppliers and other partners

-30-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

the performance and financial viability of our subcontractors and suppliers and the availability and pricing of raw materials chemicals and components
changes in procurement and other laws, regulations, contract terms and practices applicable to our industry, findings by the U.S. government as to our compliance with such laws and regulations,requirements, and changes in our customers’ business practices globally
increased competition within our markets and bid protests
the ability to maintain a qualified workforce with the required security clearances and requisite skills
our ability to meet performance obligations under our contracts, including obligations that require innovative design capabilities, are technologically complex, require certain manufacturing expertise or are dependent on factors not wholly within our control
environmental matters, including unforeseen environmental costs and government and third party claims
natural disasters
health epidemics, pandemics and similar outbreaks, including the global COVID-19 pandemic
the adequacy and availability of our insurance coverage, customer indemnifications or other liability protections
products and services we provide related to hazardous and high risk operations, including the production and use of such products, which subject us to various environmental, regulatory, financial, reputational and other risks

-35-

Tablethe future investment performance of Contentsplan assets, changes in actuarial assumptions associated with our pension and other postretirement benefit plans and legislative or other regulatory actions impacting our pension and postretirement benefit obligations

NORTHROP GRUMMAN CORPORATION                        

the future investment performance of plan assets, changes in actuarial assumptions associated with our pension and other postretirement benefit plans and legislative or other regulatory actions impacting our pension, postretirement and health and welfare plans
our ability successfullyappropriately to integrateexploit and/or protect intellectual property rights
our ability to develop new products and technologies and maintain technologies, facilities, and equipment to win new competitions and meet the Orbital ATK business and realize fully the anticipated benefitsneeds of the acquisition, without adverse consequencesour customers
our ability to exploit or protect intellectual property rights
our ability to develop new products and technologies and maintain technologies, facilities, and equipment to win new competitions and meet the needs of our customers
changes in business conditions that could impact business investments and/or recorded goodwill or the value of other long-lived assets
unanticipated changes in our tax provisions or exposure to additional tax liabilities including qualification of the Alliant Techsystems Inc. spin-off of Vista Outdoor Inc. as a tax-free transaction
changes in business conditions that could impact business investments and/or recorded goodwill or the value of other long-lived assets
You are urged to consider the limitations on, and risks associated with, forward-looking statements and not unduly rely on the accuracy of 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.
CONTRACTUAL OBLIGATIONS
ThereOther than the debt issuance, including associated interest, described in Note 4 of Part I, Item 1, there have been no material changes to our contractual obligations from those discussed in our 20182019 Annual Report on Form 10-K.
Item 3.    Quantitative and Qualitative Disclosures About Market Risk
There have been no material changes to our market risks from those discussed in our 20182019 Annual Report on Form 10-K.
Item 4.    Controls and Procedures
DISCLOSURE CONTROLS AND PROCEDURES
Our principal executive officer (Chief(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 defined in Rule 13a-15(e) and Rule 15d-15(e) of the Securities Exchange Act of 1934 (the Exchange Act)) as of SeptemberJune 30, 2019,2020, 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 Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms. These disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that

-31-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

information required to be disclosed in the reports that we file or submit is accumulated and communicated to management, including the principal 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 three months ended SeptemberJune 30, 2019,2020, no changes occurred in our internal control over financial reporting that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

-36--32-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

PART II. OTHER INFORMATION
Item 1. Legal Proceedings
We have provided information about certain legal proceedings in which we are involved in Notes 65 and 76 to the financial statements.
We are a party to various investigations, lawsuits, arbitration, claims, enforcement actions 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 administrative, civil or criminal fines, penalties or other sanctions (which terms include judgments or convictions and consent or other voluntary decrees or agreements); compensatory, treble or other damages; non-monetary relief or actions; or other liabilities. Government regulations provide that certain allegations against a contractor may lead to suspension or debarment from future government contracts or suspension of export privileges for the company or one or more of its components. The nature of legal proceedings is such that we cannot assure the outcome of any particular matter. For additional information on pending matters, please see Notes 65 and 76 to the financial statements, and for further information on the risks we face from existing and future investigations, lawsuits, arbitration, claims, enforcement actions and other legal proceedings, please see “Risk Factors” in our 20182019 Annual Report on Form 10-K.
Environmental Matters Involving Potential Monetary Damages in Excess of $100,000
The following environmental matter is reported pursuant to SEC Regulation S-K Item 103 because it involves potential monetary damages in excess of $100,000. In June 2016, the U.S. Environmental Protection Agency (EPA) conducted an environmental inspection at the Allegheny Ballistics Laboratory in Rocket Center, WV, which was then and is now operated by Alliant Techsystems Operations LLC (“ATO”). ATO became an indirect subsidiary of the Company approximately 2 years later, in June 2018. On March 3, 2020, EPA notified ATO of a proposed penalty for alleged noncompliance with certain air emission, water discharge and waste management permitting and regulatory requirements. EPA proposed a civil penalty totaling $497,635 and certain non-monetary actions. The Company has disputed the allegations and is in discussions with the government.
Item 1A. Risk Factors
For a discussion ofThere have been no material changes to our risk factors please seesince our 2019 Annual Report on Form 10-K, except with respect to the risk factor regarding COVID-19 that the company included in the section entitled “Risk Factors” in our 2018 AnnualQuarterly Report on Form 10-K.10-Q for the quarter ended March 31, 2020.
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds
Purchases of Equity Securities – The table below summarizes our repurchases of common stock during the thirdsecond quarter of 2019:2020:
PeriodNumber
of Shares
Purchased
 
Average Price
Paid per
Share
(1)
 Number
of Shares
Purchased as
Part of Publicly
Announced
Plans or
Programs
 Approximate
Dollar Value of
Shares that May
Yet Be Purchased
under the
Plans or Programs
($ in millions)
June 29, 2019 - July 26, 2019143,800
 $327.10
 143,800
  $3,801
July 27, 2019 - August 23, 2019219,700
 360.17
 219,700
  3,722
August 24, 2019 - September 27, 2019244,200
 367.81
 244,200
  3,632
Total607,700
 $355.41
 607,700
  $3,632
PeriodNumber
of Shares
Purchased
 
Average Price
Paid per
Share
(1)
 Number
of Shares
Purchased as
Part of Publicly
Announced
Plans or
Programs
 Approximate
Dollar Value of
Shares that May
Yet Be Purchased
under the
Plans or Programs
($ in millions)
March 28, 2020 - April 24, 2020397,447
 $329.41
 397,447
  $2,849
April 25, 2020 - May 22, 2020
 
 
  2,849
May 23, 2020 - June 26, 2020
 
 
  2,849
Total397,447
 $329.41
 397,447
  $2,849
(1) 
Includes commissions paid.
Share repurchases take place from time to time, subject to market conditions and management’s discretion, in the open market andor in privately negotiated transactions. The company retires its common stock upon repurchase and, in the periods presented, has not made any purchases of common stock other than in connection with these publicly announced repurchase programs.
See Note 32 to the financial statements for further information on our share repurchase programs.

-37--33-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Item 5. Other Information
As discussed in Notes 1 and 9 to the financial statements, beginning in the second quarter of 2020, the company no longer considers certain unallowable costs as part of management’s evaluation of segment operating performance. As a result, certain unallowable costs, which were previously included in segment operating results, are now reported in Unallocated corporate expense within operating income.
The following tables summarize the effect of this change on our segment information for the three months ended March 31, 2020, December 31, 2019, September 30, 2019, June 30, 2019 and March 31, 2019 and the years ended December 31, 2019, 2018 and 2017. This change has no impact on consolidated operating results. The tables should be read in conjunction with the information contained in the company’s 2019 Annual Report on Form 10-K and the Form 8-K that we filed with the SEC on April 29, 2020, which recasts the disclosures in certain portions of the 2019 Annual Report on Form 10-K to reflect changes in the company’s reportable segments.
As Previously Reported
 2017 2018 2019 2019 2020

Total Total Total Three Months Ended
$ in millionsYear Year Year Mar 31Jun 30Sep 30Dec 31 Mar 31
Operating income            
Aeronautics Systems$848
 $1,107
 $1,170
 $308
$295
$265
$302
 $259
Defense Systems534
 690
 781
 202
209
199
171
 196
Mission Systems1,157
 1,215
 1,382
 319
332
346
385
 348
Space Systems578
 635
 781
 188
191
187
215
 199
Intersegment eliminations(214) (200) (205) (50)(49)(57)(49) (49)
Total segment operating income2,903
 3,447
 3,909
 967
978
940
1,024
 953
Net FAS (service)/CAS pension adjustment638
 613
 465
 108
107
131
119
 105
Unallocated corporate expense(323) (280) (405) (139)(139)(120)(7) (124)
Total operating income$3,218
 $3,780
 $3,969
 $936
$946
$951
$1,136
 $934
As Recast
 2017 2018 2019 2019 2020
 Total Total Total Three Months Ended
$ in millionsYear Year Year Mar 31Jun 30Sep 30Dec 31 Mar 31
Operating income            
Aeronautics Systems$859
 $1,128
 $1,188
 $311
$299
$269
$309
 $263
Defense Systems539
 697
 793
 204
212
201
176
 198
Mission Systems1,179
 1,245
 1,408
 323
338
351
396
 353
Space Systems582
 644
 794
 190
193
191
220
 202
Intersegment eliminations(214) (200) (205) (50)(49)(57)(49) (49)
Total segment operating income2,945
 3,514
 3,978
 978
993
955
1,052
 967
Net FAS (service)/CAS pension adjustment638
 613
 465
 108
107
131
119
 105
Unallocated corporate expense(365) (347) (474) (150)(154)(135)(35) (138)
Total operating income$3,218
 $3,780
 $3,969
 $936
$946
$951
$1,136
 $934



-34-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

Item 6. Exhibits
2.1
  
2.2
  
2.3
  
2.4
  
+*10.1

  
*15
  
*31.1
  
*31.2
  
**32.1
  
**32.2
  
*101Northrop Grumman Corporation Quarterly Report on Form 10-Q for the quarter ended SeptemberJune 30, 2019,2020, formatted in XBRL (Extensible Business Reporting Language): (i) the Cover Page, (ii) Condensed Consolidated Statements of Earnings and Comprehensive Income, (iii) Condensed Consolidated Statements of Financial Position, (iv) Condensed Consolidated Statements of Cash Flows, (v) Condensed Consolidated Statements of Changes in Shareholders’ Equity, and (vi) Notes to Condensed Consolidated Financial Statements. The instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
  
*104Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)
+Management contract or compensatory plan or arrangement
  
*Filed with this report
  
**Furnished with this report

-38--35-

Table of Contents

NORTHROP GRUMMAN CORPORATION                        

SIGNATURES
Pursuant to the requirements 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.

NORTHROP GRUMMAN CORPORATION
(Registrant)
  
By:
 
 /s/ Michael A. Hardesty
  
Michael A. Hardesty
Corporate Vice President, Controller and
Chief Accounting Officer
(Principal Accounting Officer)
Date: October 23, 2019July 29, 2020

-39--36-