Northrop Grumman (NOC) 10-Q27 Oct 222022 Q3 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information Document - shares	9 Months Ended
Document and Entity Information Document - shares	Sep. 30, 2022	Oct. 24, 2022
Document and Entity Information [Abstract]
Entity Current Reporting Status	Yes
Document Type	10-Q
Document Fiscal Period Focus	Q3
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2022
Document Transition Report	false
Amendment Flag	false
Document Fiscal Year Focus	2022
Current Fiscal Year End Date	--12-31
Entity File Number	1-16411
Entity Registrant Name	NORTHROP GRUMMAN CORP /DE/
Entity Central Index Key	0001133421
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	80-0640649
Entity Address, Line 1	2980 Fairview Park Drive
Entity Address, City Or Town	Falls Church,
Entity Address, State Or Province	VA
Entity Address, Postal ZIP Code	22042
City Area Code	703
Local Phone Number	280-2900
Title of 12(b) Security	Common Stock
Trading Symbol	NOC
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		153,912,156

Condensed Consolidated Statemen

Condensed Consolidated Statements of Earnings and Comprehensive Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Sales	$ 8,971	$ 8,720	$ 26,569	$ 27,028
Operating costs and expenses
General and administrative expenses	974	891	2,955	2,788
Total operating costs and expenses	8,127	7,677	23,874	24,099
Gain on sale of business	0	0	0	1,980
Operating income	844	1,043	2,695	4,909
Other (expense) income
Interest expense	(122)	(132)	(386)	(423)
Non-operating FAS pension benefit	376	367	1,129	1,101
Other, net	(8)	(3)	(54)	6
Earnings before income taxes	1,090	1,275	3,384	5,593
Federal and foreign income tax expense	175	212	568	1,298
Net earnings	$ 915	$ 1,063	$ 2,816	$ 4,295
Basic earnings per share
Basic earnings per share	$ 5.92	$ 6.65	$ 18.13	$ 26.63
Weighted-average common shares outstanding, in millions	154.6	159.8	155.3	161.3
Diluted earnings per share
Diluted earnings per share	$ 5.89	$ 6.63	$ 18.06	$ 26.55
Weighted-average diluted shares outstanding, in millions	155.3	160.4	155.9	161.8
Net earnings (from above)	$ 915	$ 1,063	$ 2,816	$ 4,295
Change in unamortized prior service credit	0	(2)	(1)	(6)
Change in cumulative translation adjustment and other, net	(7)	(6)	(22)	(6)
Other comprehensive loss, net of tax	(7)	(8)	(23)	(12)
Comprehensive income	908	1,055	2,793	4,283
Product [Member]
Sales	6,979	6,845	20,599	21,060
Cost of Sales	5,589	5,352	16,250	16,662
Service [Member]
Sales	1,992	1,875	5,970	5,968
Cost of Sales	$ 1,564	$ 1,434	$ 4,669	$ 4,649

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Financial Position (Unaudited) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Assets
Cash and cash equivalents	$ 1,666	$ 3,530
Accounts receivable, net	1,936	1,467
Unbilled receivables, net	6,430	5,492
Inventoried costs, net	989	811
Prepaid expenses and other current assets	1,277	1,126
Total current assets	12,298	12,426
Property, plant and equipment, net of accumulated depreciation of $7,243 for 2022 and $6,819 for 2021	8,325	7,894
Operating lease right-of-use assets	1,680	1,655
Goodwill	17,516	17,515
Intangible assets, net	433	578
Deferred tax assets	233	200
Other non-current assets	2,248	2,311
Total assets	42,733	42,579
Liabilities
Trade accounts payable	2,335	2,197
Accrued employee compensation	1,831	1,993
Advance payments and billings in excess of costs incurred	3,107	3,026
Other current liabilities	3,539	2,314
Total current liabilities	10,812	9,530
Long-term debt, net of current portion of $1,069 for 2022 and $6 for 2021	11,803	12,777
Pension and other postretirement benefit plan liabilities	2,405	3,269
Operating lease liabilities	1,696	1,590
Deferred tax liabilities	86	490
Other non-current liabilities	1,988	1,997
Total liabilities	28,790	29,653
Commitments and contingencies (Note 6)
Shareholders’ equity
Preferred stock, $1 par value; 10,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $1 par value; 800,000,000 shares authorized; issued and outstanding: 2022—154,093,656 and 2021—156,284,423	154	156
Paid-in capital	0	0
Retained earnings	13,955	12,913
Accumulated other comprehensive loss	(166)	(143)
Total shareholders’ equity	13,943	12,926
Total liabilities and shareholders’ equity	$ 42,733	$ 42,579

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Financial Position (Unaudited) (Parentheticals) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Accumulated Depreciation	$ 7,243	$ 6,819
Long-term Debt, Current Maturities	$ 1,069	$ 6
Preferred Stock, Par Value	$ 1	$ 1
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par or Stated Value Per Share	$ 1	$ 1
Common Stock, Shares Authorized	800,000,000	800,000,000
Common Stock, Shares, Issued	154,093,656	156,284,423
Common Stock, Shares, Outstanding	154,093,656	156,284,423

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating activities
Net earnings	$ 2,816	$ 4,295
Adjustments to reconcile to net cash provided by operating activities:
Depreciation and amortization	960	908
Stock-based compensation	72	71
Deferred income taxes	(438)	(105)
Gain on sale of business	0	(1,980)
Net periodic pension and OPB income	(895)	(818)
Pension and OPB contributions	(106)	(108)
Changes in assets and liabilities:
Accounts receivable, net	(469)	(133)
Unbilled receivables, net	(1,038)	(596)
Inventoried costs, net	(171)	(113)
Prepaid expenses and other assets	(64)	6
Accounts payable and other liabilities	(57)	49
Income taxes payable, net	(56)	663
Other operating activities, net	96	(14)
Net cash provided by operating activities	650	2,125
Investing activities
Divestiture of IT services business	0	3,400
Capital expenditures	(803)	(682)
Proceeds from sale of equipment to a customer	100	84
Other investing activities, net	40	(3)
Net cash (used in) provided by investing activities	(663)	2,799
Financing activities
Payments of long-term debt	0	(2,236)
Common stock repurchases	(1,011)	(2,724)
Cash dividends paid	(786)	(737)
Payments of employee taxes withheld from share-based awards	(50)	(33)
Other financing activities, net	(4)	(46)
Net cash used in financing activities	(1,851)	(5,776)
Decrease in cash and cash equivalents	(1,864)	(852)
Cash and cash equivalents, beginning of year	3,530	4,907
Cash and cash equivalents, end of period	$ 1,666	$ 4,055

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common stock	Paid-in capital	Retained earnings	Accumulated other comprehensive loss
Beginning of period at Dec. 31, 2020		$ 167	$ 58	$ 10,482	$ (128)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchased		(8)	(60)	(2,676)
Net earnings	$ 4,295			4,295
Dividends declared				(741)
Stock compensation		0	2	38
Other comprehensive loss, net of tax	(12)				(12)
End of period at Sep. 30, 2021	$ 11,417	159	0	11,398	(140)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share	$ 4.59
Beginning of period at Jun. 30, 2021		160	0	11,144	(132)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchased		(1)	0	(587)
Net earnings	$ 1,063			1,063
Dividends declared				(252)
Stock compensation		0	0	30
Other comprehensive loss, net of tax	(8)				(8)
End of period at Sep. 30, 2021	$ 11,417	159	0	11,398	(140)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share	$ 1.57
Beginning of period at Dec. 31, 2021	$ 12,926	156	0	12,913	(143)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchased		(3)	0	(1,012)
Net earnings	2,816			2,816
Dividends declared				(785)
Stock compensation		1	0	23
Other comprehensive loss, net of tax	(23)				(23)
End of period at Sep. 30, 2022	$ 13,943	154	0	13,955	(166)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share	$ 5.03
Beginning of period at Jun. 30, 2022		155	0	13,655	(159)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchased		(1)	0	(374)
Net earnings	$ 915			915
Dividends declared				(269)
Stock compensation		0	0	28
Other comprehensive loss, net of tax	(7)				(7)
End of period at Sep. 30, 2022	$ 13,943	$ 154	$ 0	$ 13,955	$ (166)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share	$ 1.73

Basis of Presentation (Unaudite

Basis of Presentation (Unaudited)	9 Months Ended
Basis of Presentation (Unaudited)	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	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”). Intercompany accounts, transactions and profits are eliminated in consolidation. Investments in equity securities and joint ventures where the company has significant influence, but not control, are accounted for using the equity method. Effective January 30, 2021 (the “Divestiture date”), we completed the sale of our IT and mission support services business (the “IT services divestiture”) for $3.4 billion in cash and recorded a pre-tax gain on sale of $2.0 billion. The IT and mission support services business was comprised of the majority of the former Information Solutions and Services (IS&S) division of Defense Systems (excluding the Vinnell Arabia business); select cyber, intelligence and missions support programs, which were part of the former Cyber and Intelligence Mission Solutions (CIMS) division of Mission Systems; and the former Space Technical Services business unit of Space Systems. Operating results include sales and operating income for the IT and mission support services business prior to the Divestiture date. Sales and pre-tax profit for the IT and mission support services business were $162 million and $20 million, respectively, for the nine months ended September 30, 2021. 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. 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 2021 Annual Report on Form 10-K. 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. 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 Contract Estimates We recognize changes in estimated contract sales or costs and the resulting changes in contract profit on a cumulative basis. Cumulative estimate-at-completion (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 expense, is charged against income in the period the loss is identified. The following table presents the effect of aggregate net EAC adjustments: Three Months Ended September 30 Nine Months Ended September 30 $ in millions, except per share data 2022 2021 2022 2021 Revenue $ 59 $ 116 $ 363 $ 478 Operating income 45 109 310 453 Net earnings (1) 36 86 245 358 Diluted earnings per share (1) 0.23 0.54 1.57 2.21 (1) Based on a 21 percent statutory tax rate. EAC adjustments on a single performance obligation can have a significant effect on the company’s financial statements. When such adjustments occur, we generally disclose the nature, underlying conditions and financial impact of the adjustments. During the three months ended March 31, 2022, we recorded a $67 million favorable EAC adjustment on the engineering, manufacturing and development phase of the B-21 program at Aeronautics Systems largely related to performance incentives. During the three months ended September 30, 2021, we recorded a $42 million unfavorable EAC adjustment on the F-35 program at Aeronautics Systems due to labor-related production inefficiencies largely driven by COVID-19-related impacts on the labor market and employee leave. No such adjustments were material to the financial statements during the three months ended September 30, 2022. 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 an option or IDIQ task order is exercised or awarded. Company backlog as of September 30, 2022 was $79.6 billion. Of our September 30, 2022 backlog, we expect to recognize approximately 40 percent as revenue over the next 12 months and 60 percent as revenue over the next 24 months, 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. 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. 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. The amount of revenue recognized for the three and nine months ended September 30, 2022 that was included in the December 31, 2021 contract liability balance was $303 million and $2.2 billion, respectively. The amount of revenue recognized for the three and nine months ended September 30, 2021 that was included in the December 31, 2020 contract liability balance was $261 million and $1.8 billion, respectively. Disaggregation of Revenue See Note 9 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. Property, Plant, and Equipment During the nine months ended September 30, 2022, the company acquired $46 million of internal use software through long-term financing directly with the supplier. The software was recorded in PP&E as a non-cash investing activity and the related liability was recorded in long-term debt as a non-cash financing activity. During the nine months ended September 30, 2022, the company received lease incentives for landlord funded leasehold improvements of $96 million related to a Space Systems real estate lease, which were recorded in PP&E and included in non-cash investing activities. Non-cash investing activities also include capital expenditures incurred but not yet paid of $118 million and $105 million as of September 30, 2022 and 2021, respectively. In the fourth quarter of 2020, the company completed a sale of equipment to a customer on a restricted Aeronautics Systems program. During the nine months ended September 30, 2022 and 2021, the company received cash payments of $100 million and $84 million, respectively, related to the equipment sale and included it in Proceeds from sale of equipment to a customer in the unaudited condensed consolidated statement of cash flows. Accumulated Other Comprehensive Loss The components of accumulated other comprehensive loss, net of tax, are as follows: $ in millions September 30, 2022 December 31, 2021 Unamortized prior service credit $ 1 $ 2 Cumulative translation adjustment and other, net (167) (145) Total accumulated other comprehensive loss $ (166) $ (143) Related Party Transactions For all periods presented, the company had no material related party transactions. Accounting Standards Updates Accounting standards updates adopted and/or issued, but not effective until after September 30, 2022, 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.

Earnings Per Share, Share Repur

Earnings Per Share, Share Repurchases and Dividends on Common Stock (Unaudited)	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
EARNINGS PER SHARE, SHARE REPURCHASES AND DIVIDENDS ON COMMON STOCK	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 0.7 million shares and 0.6 million shares for the three and nine months ended September 30, 2022, respectively. The dilutive effect of these securities totaled 0.6 million shares and 0.5 million shares for the three and nine months ended September 30, 2021, respectively. Share Repurchases On December 4, 2018, the company’s board of directors authorized a share repurchase program of up to $3.0 billion of the company’s common stock (the “2018 Repurchase Program”). Repurchases under the 2018 Repurchase Program commenced in March 2020 and were completed in October 2021. On January 25, 2021, the company’s board of directors authorized a share repurchase program of up to an additional $3.0 billion in share repurchases of the company’s common stock (the “2021 Repurchase Program”). Repurchases under the 2021 Repurchase Program commenced in October 2021 upon the completion of the 2018 Repurchase Program. As of September 30, 2022, repurchases under the 2021 Repurchase Program totaled $1.9 billion; $1.1 billion remained under this share repurchase authorization. By its terms, the 2021 Repurchase Program is set to expire when we have used all authorized funds for repurchases. On January 24, 2022, the company’s board of directors authorized a new share repurchase program of up to an additional $2.0 billion in share repurchases of the company’s common stock (the “2022 Repurchase Program”). By its terms, repurchases under the 2022 Repurchase Program will commence upon completion of the 2021 Repurchase Program and will expire when we have used all authorized funds for repurchases. As of September 30, 2022, there have been no repurchases under the 2022 Repurchase Program and the company’s total outstanding share repurchase authorization was $3.1 billion. During the first quarter of 2021, the company entered into an accelerated share repurchase (ASR) agreement with Goldman Sachs & Co. LLC (Goldman Sachs) to repurchase $2.0 billion of the company’s common stock as part of the 2018 Repurchase Program. Under the agreement, we made a payment of $2.0 billion to Goldman Sachs and received an initial delivery of 5.9 million shares valued at $1.7 billion that were immediately canceled by the company. The remaining balance of $300 million was settled on June 1, 2021 with a final delivery of 0.2 million shares from Goldman Sachs. The final average purchase price was $327.29 per share. During the fourth quarter of 2021, the company entered into an ASR agreement with Goldman Sachs to repurchase $500 million of the company’s common stock as part of the 2021 Repurchase Program. Under the agreement, we made a payment of $500 million to Goldman Sachs and received an initial delivery of 1.2 million shares valued at $425 million that were immediately canceled by the company. The remaining balance of $75 million was settled on February 1, 2022 with a final delivery of 0.1 million shares from Goldman Sachs. The final average purchase price was $374.79 per share. Share repurchases take place from time to time, subject to market conditions and management’s discretion, in the open market or 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. During the nine months ended September 30, 2022, the company repurchased $1.0 billion of its outstanding shares. The table below summarizes the company’s share repurchases to date under the authorizations described above: Shares Repurchased Repurchase Program Amount Total Average (1) Date Completed Nine Months Ended September 30 2022 2021 December 4, 2018 $ 3,000 8.9 $ 337.18 October 2021 — 8.1 January 25, 2021 $ 3,000 4.6 407.74 2.4 — January 24, 2022 $ 2,000 — — — — (1) Includes commissions paid. Dividends on Common Stock In May 2022, the company increased the quarterly common stock dividend 10 percent to $1.73 per share from the previous amount of $1.57 per share.

Income Taxes (Unaudited)

Income Taxes (Unaudited)	9 Months Ended
Income Taxes (Unaudited)	Sep. 30, 2022
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES Three Months Ended September 30 Nine Months Ended September 30 $ in millions 2022 2021 2022 2021 Federal and foreign income tax expense $ 175 $ 212 $ 568 $ 1,298 Effective income tax rate 16.1 % 16.6 % 16.8 % 23.2 % Current Quarter The third quarter 2022 effective tax rate (ETR) decreased to 16.1 percent from 16.6 percent in the prior year period. The company’s third quarter 2022 ETR includes benefits of $42 million for research credits and $16 million for foreign derived intangible income (FDII). The company’s third quarter 2021 ETR included benefits of $43 million for research credits and $12 million for FDII. Year to Date The year to date 2022 ETR decreased to 16.8 percent from 23.2 percent in the prior year period. The company’s year to date 2022 ETR includes benefits of $124 million for research credits and $46 million for FDII. The company’s year to date 2021 ETR included benefits of $142 million for research credits and $32 million for FDII. The year to date 2021 ETR was impacted by additional federal income taxes resulting from the IT services divestiture, as well as a change in tax revenue recognition on certain long-term contracts, which increased taxable income in years prior to the 2017 Tax Cuts and Jobs Act at a rate above the current statutory rate. Taxes receivable, which are included in Prepaid expenses and other current assets in the unaudited condensed consolidated statements of financial position, were $627 million as of September 30, 2022 and $571 million as of December 31, 2021. The company has recorded unrecognized tax benefits related to our methods of accounting associated with the timing of revenue recognition and related costs and the 2017 Tax Cuts and Jobs Act, which includes related final revenue recognition regulations issued in December 2020 under IRC Section 451(b) and procedural guidance issued in August 2021. As of September 30, 2022, we have approximately $1.7 billion in unrecognized tax benefits, including $449 million related to our position on IRC Section 451(b). If these matters, including our position on IRC Section 451(b), are unfavorably resolved, there could be a material impact on our future cash flows. It is reasonably possible that within the next 12 months our unrecognized tax benefits related to these matters may increase by approximately $120 million. Our current unrecognized tax benefits, which are included in Other current liabilities in the unaudited condensed consolidated statements of financial position, were $657 million and $590 million as of September 30, 2022 and December 31, 2021, respectively, with the remainder of our unrecognized tax benefits included within Other non-current liabilities. We file income tax returns in the U.S. federal jurisdiction and in various state and foreign jurisdictions. The Northrop Grumman 2014-2020 federal tax returns and refund claims related to its 2007-2016 federal tax returns are currently under Internal Revenue Service (IRS) examination. During the second quarter of 2022, the company’s 2014-2016 federal income tax returns and refund claims related to its 2007-2016 federal tax returns reverted back from IRS Appeals to IRS examination for additional factual review. In addition, legacy Orbital ATK (OATK) federal tax returns for the years ended March 31, 2014 and 2015, the nine-month transition period ended December 31, 2015 and calendar years 2016-2017 are currently under review by the IRS Appeals Office. It is reasonably possible that within the next twelve months, unrecognized tax benefits claimed in legacy OATK’s 2014 to 2017 tax years may decline by up to $110 million through administrative resolution with IRS Appeals.

Fair Value of Financial Instrum

Fair Value of Financial Instruments (Unaudited)	9 Months Ended
Fair Value of Financial Instruments (Unaudited)	Sep. 30, 2022
Fair Value Disclosures [Abstract]
FAIR VALUE OF FINANCIAL INSTRUMENTS	FAIR VALUE OF FINANCIAL INSTRUMENTS The company holds a portfolio of marketable 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 foreign currency forward contracts. Where model-derived valuations are appropriate, the company utilizes the income approach to determine the fair value using internal models based on observable market inputs. 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, 2022 December 31, 2021 $ in millions Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial Assets Marketable securities $ 299 $ — $ 8 $ 307 $ 393 $ 1 $ 7 $ 401 Marketable securities valued using NAV 13 17 Total marketable securities 299 — 8 320 393 1 7 418 Derivatives — 4 — 4 — (1) — (1) The notional value of the company’s foreign currency forward contracts at September 30, 2022 and December 31, 2021 was $128 million and $120 million, respectively. At September 30, 2022 and December 31, 2021, no portion of the notional value was designated as a cash flow hedge. The derivative fair values and related unrealized gains/losses at September 30, 2022 and December 31, 2021 were not material. There were no transfers of financial instruments into or out of Level 3 of the fair value hierarchy during the nine months ended September 30, 2022. 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 $11.9 billion and $15.1 billion as of September 30, 2022 and December 31, 2021, 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 current portion of long-term debt is recorded in Other current liabilities in the unaudited condensed consolidated statements of financial position. On September 2, 2021, the company completed an exchange offer to eligible holders of the outstanding notes of our direct wholly owned subsidiary, Northrop Grumman Systems Corporation (“NGSC”) maturing through 2036. An aggregate principal amount of $422 million of the NGSC notes was exchanged for $422 million of unregistered Northrop Grumman Corporation notes (the “Unregistered Notes”) with the same interest rates and maturity dates as the NGSC notes exchanged. Because the debt instruments are not substantially different, the exchange was treated as a debt modification for accounting purposes with no gain or loss recognized. On June 15, 2022, the company completed a registered exchange offer pursuant to which the company exchanged an aggregate principal amount of $414 million of the Unregistered Notes for $414 million of new notes registered under the Securities Act of 1933, as amended, (the “Registered Notes”) with the same interest rates and maturity dates as the Unregistered Notes. Because the debt instruments were not substantially different in either of the exchange offers, both exchanges were treated as debt modifications for accounting purposes with no gain or loss recognized. Repayments of Senior Notes In March 2021, the company repaid $700 million of 3.50 percent unsecured notes upon maturity. In March 2021, the company redeemed $1.5 billion of 2.55 percent unsecured notes due October 2022. The company recorded a pre-tax charge of $54 million principally related to the premium paid on the redemption, which was recorded in Other, net in the unaudited condensed consolidated statements of earnings and comprehensive income.

Investigations, Claims and Liti

Investigations, Claims and Litigation (Unaudited)	9 Months Ended
Investigations, Claims and Litigation (Unaudited)	Sep. 30, 2022
Disclosure Text Block Supplement [Abstract]
INVESTIGATIONS, CLAIMS AND LITIGATION	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 were delivered. The company’s lawsuit 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. In the course of the litigation, the United States subsequently amended its counterclaim, reducing it to seek approximately $193 million. 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 February 3, 2020, after extensive discovery and motions practice, the parties commenced what was expected to be a seven-week trial. After COVID-19-related interruptions, trial concluded on March 5, 2021. On October 12, 2021, the parties completed post-trial briefing, and on December 8, 2021 the court held a post-trial oral argument. On June 27, 2022, the judge issued a decision concluding that the company was entitled to approximately $63 million for unpaid portions of the contract price and $5 million in additional damages, as well as interest, which the company estimated was approximately $16 million (as of September 30, 2022) and such additional interest as may accrue until the date the government makes payment. The judge also concluded that the government was entitled to approximately $1 million in off-setting damages. On July 18, 2022, the government filed a motion for reconsideration, arguing that the government is entitled to further damages of approximately $57 million for particular periods of delay. On October 17, 2022, the court denied the government’s motion for reconsideration, making clear the government was not entitled to any such damages for delay. The court also determined that the past interest due to the company amounted to approximately $16 million. On October 19, 2022, the court entered judgment in the company’s favor in the amount of approximately $83 million, plus a currently estimated approximately $7 thousand of additional interest to accrue per day until the date the government makes payment. The parties have until December 19, 2022 to file an appeal. The company is 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, the company has worked closely with the United States Navy, the United States Environmental Protection Agency, the New York State Department of Environmental Conservation (NYSDEC), the New York State Department of Health and other federal, state and local governmental authorities, to address legacy environmental conditions in Bethpage. In December 2019, the State of New York issued an Amended Record of Decision seeking to impose additional remedial requirements beyond measures the company previously had been taking; the State also communicated that it was assessing potential natural resource damages. In December 2020, the parties reached a tentative agreement regarding the steps the company would take to implement the State’s Amended Record of Decision and to resolve certain potential other claims, including for natural resource damages. On September 22, 2021, the State of New York issued for public comment a new consent decree reflecting the agreement. On December 7, 2021, the public comment period closed. On August 3, 2022, the court approved the consent decree. We have also reached agreements with the Department of Defense and the Bethpage and South Farmingdale Water Districts to resolve claims involving these parties. On May 24, 2022, the court approved the agreement with the Bethpage Water District, and on August 2, 2022, the court approved the agreement with the Department of Defense. The agreement with the South Farmingdale Water District does not require court approval. We have incurred, and expect to continue to incur, as included in Note 6, substantial remediation costs related to the legacy Bethpage environmental conditions. It is also possible that applicable remediation standards and other requirements to which we are subject may continue to change, and our costs may increase materially. In addition to disputes and legal proceedings related to environmental conditions and remediation at the site, we are a party to various individual lawsuits and a putative class action alleging personal injury and property damage in the Eastern District of New York. The filed individual lawsuits have been stayed, pending a court decision on class certification. We are also a party, and may become a party, to other lawsuits brought by insurance carriers and other parties. We cannot at this time predict or reasonably estimate the potential cumulative outcomes or ranges of possible liability of these Bethpage lawsuits. In June 2018, the FTC issued a Decision and Order enabling the company’s acquisition of OATK to proceed and providing generally for the company to continue to make solid rocket motors available to competing missile primes

Commitments and Contingencies (

Commitments and Contingencies (Unaudited)	9 Months Ended
Commitments and Contingencies (Unaudited)	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	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 September 30, 2022, or its annual results of operations and/or cash flows. The U.S. government has raised questions about an interest rate assumption used by the company to determine our CAS pension expense. 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 submitted a formal response on July 31, 2020, which we believe demonstrates the appropriateness of the assumptions used. On November 24, 2020, the government replied to the company’s response, disagreeing with our position and requesting additional input, which we provided on February 22, 2021. We continue to exchange correspondence and engage with the government on this matter, including responding to requests for and providing additional information. 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 amount of reasonably possible future costs in excess of accrued costs and the deferred costs expected to be recoverable through overhead charges on U.S. government contracts as of September 30, 2022 and December 31, 2021: $ in millions Accrued Costs (1)(2) Reasonably Possible Future Costs in Excess of Accrued Costs (2) Deferred Costs (3) September 30, 2022 $ 584 $ 357 $ 503 December 31, 2021 572 363 486 (1) As of September 30, 2022, $200 million is recorded in Other current liabilities and $384 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 September 30, 2022, $178 million is deferred in Prepaid expenses and other current assets and $325 million is deferred in Other non-current assets. These amounts are evaluated for recoverability on a routine basis. Although management cannot predict whether (i) new information gained as our environmental remediation projects progress, (ii) changes in remediation standards or other requirements to which we are subject, or (iii) other changes in facts and circumstances will materially affect the estimated liability accrued, 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 September 30, 2022, or its annual results of operations and/or cash flows. Financial Arrangements In the ordinary course of business, the company uses standby letters of credit and guarantees issued by commercial banks and surety bonds issued principally by insurance companies to guarantee the performance on certain obligations. At September 30, 2022, there were $393 million of stand-by letters of credit and guarantees and $78 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 September 30, 2022, there were no commercial paper borrowings outstanding. Credit Facilities In August 2022, the company entered into a new five-year senior unsecured revolving credit facility in an aggregate principal amount of $2.5 billion (the “2022 Credit Agreement”). The 2022 Credit Agreement replaced the company’s prior five-year, $2.0 billion revolving credit facility entered into on August 17, 2018 and as amended on October 17, 2019. The revolving credit facility established under the 2022 Credit Agreement is intended to support the company’s commercial paper program and other general corporate purposes. Commercial paper borrowings reduce the amount available for borrowing under the 2022 Credit Agreement. At September 30, 2022, there were no borrowings outstanding under this facility. The 2022 Credit Agreement contains generally customary terms and conditions, including covenants restricting the company’s ability to sell all or substantially all of its assets, merge or consolidate with another entity or undertake other fundamental changes and incur liens. The company also cannot permit the ratio of its debt to capitalization (as set forth in the credit agreement) to exceed 65 percent. At September 30, 2022, the company was in compliance with all covenants under its credit agreements.

Retirement Benefits (Unaudited)

Retirement Benefits (Unaudited)	9 Months Ended
Retirement Benefits (Unaudited)	Sep. 30, 2022
Retirement Benefits [Abstract]
RETIREMENT BENEFITS	RETIREMENT BENEFITS The cost to the company of its pension and other postretirement benefit (OPB) plans is shown in the following table: Three Months Ended September 30 Nine Months Ended September 30 Pension OPB Pension OPB $ in millions 2022 2021 2022 2021 2022 2021 2022 2021 Components of net periodic benefit cost (benefit) Service cost $ 92 $ 104 $ 2 $ 4 $ 276 $ 311 $ 6 $ 12 Interest cost 285 263 12 13 853 790 36 40 Expected return on plan assets (661) (627) (28) (26) (1,982) (1,884) (83) (79) Amortization of prior service (credit) cost — (3) — — — (7) (1) (1) Net periodic benefit cost (benefit) $ (284) $ (263) $ (14) $ (9) $ (853) $ (790) $ (42) $ (28) 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 30 $ in millions 2022 2021 2022 2021 Defined benefit pension plans $ 26 $ 26 $ 77 $ 79 OPB plans 9 8 29 29 Defined contribution plans 108 99 429 476

Stock Compensation Plans and Ot

Stock Compensation Plans and Other Compensation Arrangements (Unaudited)	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
STOCK COMPENSATION PLANS AND OTHER COMPENSATION ARRANGEMENTS	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 in millions 2022 2021 RSRs granted 0.1 0.1 RPSRs granted 0.2 0.2 Grant date aggregate fair value $ 94 $ 89 RSRs typically vest on the third anniversary of the grant date, while RPSRs generally vest and pay out based on the achievement of certain performance metrics over a three 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 $ in millions 2022 2021 Minimum aggregate payout amount $ 32 $ 31 Maximum aggregate payout amount 183 178 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 certain performance metrics over a three

Segment Information (Unaudited)

Segment Information (Unaudited)	9 Months Ended
Segment Information (Unaudited)	Sep. 30, 2022
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION The following table presents sales and operating income by segment: Three Months Ended September 30 Nine Months Ended September 30 $ in millions 2022 2021 2022 2021 Sales Aeronautics Systems $ 2,537 $ 2,725 $ 7,774 $ 8,628 Defense Systems 1,345 1,409 3,922 4,398 Mission Systems 2,456 2,436 7,469 7,613 Space Systems 3,163 2,681 8,997 7,950 Intersegment eliminations (530) (531) (1,593) (1,561) Total sales 8,971 8,720 26,569 27,028 Operating income Aeronautics Systems 262 265 827 873 Defense Systems 158 175 481 529 Mission Systems 368 372 1,166 1,177 Space Systems 290 288 861 865 Intersegment eliminations (71) (65) (218) (197) Total segment operating income 1,007 1,035 3,117 3,247 FAS/CAS operating adjustment (55) 61 (152) 98 Unallocated corporate (expense) income (108) (53) (270) 1,564 Total operating income $ 844 $ 1,043 $ 2,695 $ 4,909 FAS/CAS Operating 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 applicable Federal Acquisition Regulation (FAR) and U.S. Government Cost Accounting Standards (CAS) requirements. The FAS/CAS operating 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) Income Unallocated corporate (expense) income includes the portion of corporate costs not considered allowable or allocable under the applicable FAR and CAS requirements, and therefore not allocated to the segments, such as changes in deferred state income taxes and a portion of management and administration, legal, environmental, compensation, retiree benefits, advertising and other corporate unallowable costs. Unallocated corporate (expense) income 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, as well as certain compensation and other costs. During the first quarter of 2021, the $2.0 billion pre-tax gain on the sale of our IT services business and $192 million of unallowable state taxes and transaction costs associated with the divestiture were recorded in Unallocated corporate (expense) income. Disaggregation of Revenue Sales by Customer Type Three Months Ended September 30 Nine Months Ended September 30 2022 2021 2022 2021 $ in millions $ % (3) $ % (3) $ % (3) $ % (3) Aeronautics Systems U.S. government (1) $ 2,138 85 % $ 2,312 85 % $ 6,564 85 % $ 7,366 85 % International (2) 341 13 % 360 13 % 1,012 13 % 1,110 13 % Other customers — — % 5 — % 17 — % 15 — % Intersegment sales 58 2 % 48 2 % 181 2 % 137 2 % Aeronautics Systems sales 2,537 100 % 2,725 100 % 7,774 100 % 8,628 100 % Defense Systems U.S. government (1) 820 62 % 877 62 % 2,369 61 % 2,749 63 % International (2) 312 23 % 316 22 % 933 24 % 1,002 23 % Other customers 19 1 % 10 1 % 53 1 % 61 1 % Intersegment sales 194 14 % 206 15 % 567 14 % 586 13 % Defense Systems sales 1,345 100 % 1,409 100 % 3,922 100 % 4,398 100 % Mission Systems U.S. government (1) 1,729 71 % 1,756 72 % 5,325 72 % 5,491 71 % International (2) 452 18 % 417 17 % 1,300 17 % 1,338 18 % Other customers 25 1 % 19 1 % 89 1 % 49 1 % Intersegment sales 250 10 % 244 10 % 755 10 % 735 10 % Mission Systems sales 2,456 100 % 2,436 100 % 7,469 100 % 7,613 100 % Space Systems U.S. government (1) 2,967 94 % 2,507 94 % 8,473 94 % 7,401 93 % International (2) 105 3 % 92 3 % 261 3 % 301 4 % Other customers 63 2 % 49 2 % 173 2 % 145 2 % Intersegment sales 28 1 % 33 1 % 90 1 % 103 1 % Space Systems sales 3,163 100 % 2,681 100 % 8,997 100 % 7,950 100 % Total U.S. government (1) 7,654 86 % 7,452 85 % 22,731 86 % 23,007 85 % International (2) 1,210 13 % 1,185 14 % 3,506 13 % 3,751 14 % Other customers 107 1 % 83 1 % 332 1 % 270 1 % Total Sales $ 8,971 100 % $ 8,720 100 % $ 26,569 100 % $ 27,028 100 % (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. Sales by Contract Type Three Months Ended September 30 Nine Months Ended September 30 2022 2021 2022 2021 $ in millions $ % (1) $ % (1) $ % (1) $ % (1) Aeronautics Systems Cost-type $ 1,185 48 % $ 1,358 51 % $ 3,678 48 % $ 4,110 48 % Fixed-price 1,294 52 % 1,319 49 % 3,915 52 % 4,381 52 % Intersegment sales 58 48 181 137 Aeronautics Systems sales 2,537 2,725 7,774 8,628 Defense Systems Cost-type 366 32 % 433 36 % 1,075 32 % 1,376 36 % Fixed-price 785 68 % 770 64 % 2,280 68 % 2,436 64 % Intersegment sales 194 206 567 586 Defense Systems sales 1,345 1,409 3,922 4,398 Mission Systems Cost-type 881 40 % 746 34 % 2,591 39 % 2,419 35 % Fixed-price 1,325 60 % 1,446 66 % 4,123 61 % 4,459 65 % Intersegment sales 250 244 755 735 Mission Systems sales 2,456 2,436 7,469 7,613 Space Systems Cost-type 2,192 70 % 1,931 73 % 6,271 70 % 5,800 74 % Fixed-price 943 30 % 717 27 % 2,636 30 % 2,047 26 % Intersegment sales 28 33 90 103 Space Systems sales 3,163 2,681 8,997 7,950 Total Cost-type 4,624 52 % 4,468 51 % 13,615 51 % 13,705 51 % Fixed-price 4,347 48 % 4,252 49 % 12,954 49 % 13,323 49 % Total Sales $ 8,971 $ 8,720 $ 26,569 $ 27,028 (1) Percentages calculated based on external customer sales. Sales by Geographic Region Three Months Ended September 30 Nine Months Ended September 30 2022 2021 2022 2021 $ in millions $ % (2) $ % (2) $ % (2) $ % (2) Aeronautics Systems United States $ 2,138 85 % $ 2,317 87 % $ 6,581 87 % $ 7,381 86 % Asia/Pacific 165 7 % 239 9 % 560 7 % 722 9 % Europe 163 7 % 108 4 % 413 5 % 335 4 % All other (1) 13 1 % 13 — % 39 1 % 53 1 % Intersegment sales 58 48 181 137 Aeronautics Systems sales 2,537 2,725 7,774 8,628 Defense Systems United States 839 72 % 887 74 % 2,422 72 % 2,810 74 % Asia/Pacific 112 10 % 107 9 % 340 10 % 336 9 % Europe 101 9 % 78 6 % 297 9 % 233 6 % All other (1) 99 9 % 131 11 % 296 9 % 433 11 % Intersegment sales 194 206 567 586 Defense Systems sales 1,345 1,409 3,922 4,398 Mission Systems United States 1,754 79 % 1,775 81 % 5,414 81 % 5,540 81 % Asia/Pacific 159 7 % 114 5 % 435 6 % 372 5 % Europe 210 10 % 233 11 % 654 10 % 744 11 % All other (1) 83 4 % 70 3 % 211 3 % 222 3 % Intersegment sales 250 244 755 735 Mission Systems sales 2,456 2,436 7,469 7,613 Space Systems United States 3,030 97 % 2,556 97 % 8,646 97 % 7,546 97 % Asia/Pacific 33 1 % 10 — % 86 1 % 39 — % Europe 69 2 % 79 3 % 165 2 % 256 3 % All other (1) 3 — % 3 — % 10 — % 6 — % Intersegment sales 28 33 90 103 Space Systems sales 3,163 2,681 8,997 7,950 Total United States 7,761 87 % 7,535 87 % 23,063 87 % 23,277 86 % Asia/Pacific 469 5 % 470 5 % 1,421 5 % 1,469 5 % Europe 543 6 % 498 6 % 1,529 6 % 1,568 6 % All other (1) 198 2 % 217 2 % 556 2 % 714 3 % Total Sales $ 8,971 $ 8,720 $ 26,569 $ 27,028 (1) All other is principally comprised of the Middle East. (2) Percentages calculated based on external customer sales.

Summary of Significant Accounti

Summary of Significant Accounting Policies (Policies)	9 Months Ended
Summary of Significant Accounting Policies (Policies)	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Principles of Consolidation	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”). Intercompany accounts, transactions and profits are eliminated in consolidation. Investments in equity securities and joint ventures where the company has significant influence, but not control, are accounted for using the equity method.
Basis of Presentation	Effective January 30, 2021 (the “Divestiture date”), we completed the sale of our IT and mission support services business (the “IT services divestiture”) for $3.4 billion in cash and recorded a pre-tax gain on sale of $2.0 billion. The IT and mission support services business was comprised of the majority of the former Information Solutions and Services (IS&S) division of Defense Systems (excluding the Vinnell Arabia business); select cyber, intelligence and missions support programs, which were part of the former Cyber and Intelligence Mission Solutions (CIMS) division of Mission Systems; and the former Space Technical Services business unit of Space Systems. Operating results include sales and operating income for the IT and mission support services business prior to the Divestiture date. Sales and pre-tax profit for the IT and mission support services business were $162 million and $20 million, respectively, for the nine months ended September 30, 2021. 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.
Fiscal Period Policy	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.
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 from Contract with Customer	Contract Estimates We recognize changes in estimated contract sales or costs and the resulting changes in contract profit on a cumulative basis. Cumulative estimate-at-completion (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 expense, is charged against income in the period the loss is identified.
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 include the dilutive effect of awards granted to employees under stock-based compensation plans.
Investments in Marketable Securities	The company holds a portfolio of marketable 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
Derivative Financial Instruments and Hedging Activities	Where model-derived valuations are appropriate, the company utilizes the income approach to determine the fair value using internal models based on observable market inputs.
Fair Value of Long-term Debt	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.
U.S. Government Cost Claims	From time to time, the company is advised of claims by the U.S. government concerning certain potential disallowed costs, plus, at times, penalties and interest. When such findings are presented, the company and 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.
Pension and Other Postretirement 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
New Accounting Pronouncements, Policy	Accounting standards updates adopted and/or issued, but not effective until after September 30, 2022, 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.

Basis of Presentation (Unaudi_2

Basis of Presentation (Unaudited) (Tables)	9 Months Ended
Basis of Presentation (Unaudited) (Tables)	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Change in Accounting Estimate [Table Text Block]	The following table presents the effect of aggregate net EAC adjustments: Three Months Ended September 30 Nine Months Ended September 30 $ in millions, except per share data 2022 2021 2022 2021 Revenue $ 59 $ 116 $ 363 $ 478 Operating income 45 109 310 453 Net earnings (1) 36 86 245 358 Diluted earnings per share (1) 0.23 0.54 1.57 2.21
Accumulated Other Comprehensive Loss	The components of accumulated other comprehensive loss, net of tax, are as follows: $ in millions September 30, 2022 December 31, 2021 Unamortized prior service credit $ 1 $ 2 Cumulative translation adjustment and other, net (167) (145) Total accumulated other comprehensive loss $ (166) $ (143)

Earnings Per Share, Share Rep_2

Earnings Per Share, Share Repurchases and Dividends on Common Stock (Unaudited) (Tables)	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Share Repurchases	The table below summarizes the company’s share repurchases to date under the authorizations described above: Shares Repurchased Repurchase Program Amount Total Average (1) Date Completed Nine Months Ended September 30 2022 2021 December 4, 2018 $ 3,000 8.9 $ 337.18 October 2021 — 8.1 January 25, 2021 $ 3,000 4.6 407.74 2.4 — January 24, 2022 $ 2,000 — — — — (1) Includes commissions paid.

Income Taxes (Unaudited) (Table

Income Taxes (Unaudited) (Tables)	9 Months Ended
Income Taxes (Unaudited) (Tables)	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Schedule of Income Tax Expense and Effective Income Tax Rates	Three Months Ended September 30 Nine Months Ended September 30 $ in millions 2022 2021 2022 2021 Federal and foreign income tax expense $ 175 $ 212 $ 568 $ 1,298 Effective income tax rate 16.1 % 16.6 % 16.8 % 23.2 %

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Unaudited) (Tables)	9 Months Ended
Fair Value of Financial Instruments (Unaudited) (Tables)	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Fair value information of assets and liabilities measured at fair value on a recurring basis	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, 2022 December 31, 2021 $ in millions Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Financial Assets Marketable securities $ 299 $ — $ 8 $ 307 $ 393 $ 1 $ 7 $ 401 Marketable securities valued using NAV 13 17 Total marketable securities 299 — 8 320 393 1 7 418 Derivatives — 4 — 4 — (1) — (1)

Commitments and Contingencies_2

Commitments and Contingencies (Unaudited) (Tables)	9 Months Ended
Commitments and Contingencies (Unaudited) (Tables)	Sep. 30, 2022
Environmental Remediation Range of Future Costs [Line Items]
Environmental Remediation [Table Text Block]	The table below summarizes the amount accrued for environmental remediation costs, management’s estimate of the amount of reasonably possible future costs in excess of accrued costs and the deferred costs expected to be recoverable through overhead charges on U.S. government contracts as of September 30, 2022 and December 31, 2021: $ in millions Accrued Costs (1)(2) Reasonably Possible Future Costs in Excess of Accrued Costs (2) Deferred Costs (3) September 30, 2022 $ 584 $ 357 $ 503 December 31, 2021 572 363 486 (1) As of September 30, 2022, $200 million is recorded in Other current liabilities and $384 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 September 30, 2022, $178 million is deferred in Prepaid expenses and other current assets and $325 million is deferred in Other non-current assets. These amounts are evaluated for recoverability on a routine basis.

Retirement Benefits (Unaudite_2

Retirement Benefits (Unaudited) (Tables)	9 Months Ended
Retirement Benefits (Unaudited) (Tables)	Sep. 30, 2022
Retirement Benefits [Abstract]
Components of net periodic benefit cost	The cost to the company of its pension and other postretirement benefit (OPB) plans is shown in the following table: Three Months Ended September 30 Nine Months Ended September 30 Pension OPB Pension OPB $ in millions 2022 2021 2022 2021 2022 2021 2022 2021 Components of net periodic benefit cost (benefit) Service cost $ 92 $ 104 $ 2 $ 4 $ 276 $ 311 $ 6 $ 12 Interest cost 285 263 12 13 853 790 36 40 Expected return on plan assets (661) (627) (28) (26) (1,982) (1,884) (83) (79) Amortization of prior service (credit) cost — (3) — — — (7) (1) (1) Net periodic benefit cost (benefit) $ (284) $ (263) $ (14) $ (9) $ (853) $ (790) $ (42) $ (28)
Employer contributions to retirement plans	Contributions made by the company to its retirement plans are as follows: Three Months Ended September 30 Nine Months Ended September 30 $ in millions 2022 2021 2022 2021 Defined benefit pension plans $ 26 $ 26 $ 77 $ 79 OPB plans 9 8 29 29 Defined contribution plans 108 99 429 476

Stock Compensation Plans and _2

Stock Compensation Plans and Other Compensation Arrangements (Unaudited) (Tables)	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Nonvested Restricted Stock Shares Activity [Table Text Block]	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 in millions 2022 2021 RSRs granted 0.1 0.1 RPSRs granted 0.2 0.2 Grant date aggregate fair value $ 94 $ 89
Cash Units and Cash Performance Units Aggregate Payout Amount [Table Text Block]	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 $ in millions 2022 2021 Minimum aggregate payout amount $ 32 $ 31 Maximum aggregate payout amount 183 178

Segment Information (Unaudite_2

Segment Information (Unaudited) (Tables)	9 Months Ended
Segment Information (Unaudited) (Tables)	Sep. 30, 2022
Segment Reporting [Abstract]
Sales and operating income by segment	The following table presents sales and operating income by segment: Three Months Ended September 30 Nine Months Ended September 30 $ in millions 2022 2021 2022 2021 Sales Aeronautics Systems $ 2,537 $ 2,725 $ 7,774 $ 8,628 Defense Systems 1,345 1,409 3,922 4,398 Mission Systems 2,456 2,436 7,469 7,613 Space Systems 3,163 2,681 8,997 7,950 Intersegment eliminations (530) (531) (1,593) (1,561) Total sales 8,971 8,720 26,569 27,028 Operating income Aeronautics Systems 262 265 827 873 Defense Systems 158 175 481 529 Mission Systems 368 372 1,166 1,177 Space Systems 290 288 861 865 Intersegment eliminations (71) (65) (218) (197) Total segment operating income 1,007 1,035 3,117 3,247 FAS/CAS operating adjustment (55) 61 (152) 98 Unallocated corporate (expense) income (108) (53) (270) 1,564 Total operating income $ 844 $ 1,043 $ 2,695 $ 4,909
Revenue by Major Customers by Reporting Segments	Sales by Customer Type Three Months Ended September 30 Nine Months Ended September 30 2022 2021 2022 2021 $ in millions $ % (3) $ % (3) $ % (3) $ % (3) Aeronautics Systems U.S. government (1) $ 2,138 85 % $ 2,312 85 % $ 6,564 85 % $ 7,366 85 % International (2) 341 13 % 360 13 % 1,012 13 % 1,110 13 % Other customers — — % 5 — % 17 — % 15 — % Intersegment sales 58 2 % 48 2 % 181 2 % 137 2 % Aeronautics Systems sales 2,537 100 % 2,725 100 % 7,774 100 % 8,628 100 % Defense Systems U.S. government (1) 820 62 % 877 62 % 2,369 61 % 2,749 63 % International (2) 312 23 % 316 22 % 933 24 % 1,002 23 % Other customers 19 1 % 10 1 % 53 1 % 61 1 % Intersegment sales 194 14 % 206 15 % 567 14 % 586 13 % Defense Systems sales 1,345 100 % 1,409 100 % 3,922 100 % 4,398 100 % Mission Systems U.S. government (1) 1,729 71 % 1,756 72 % 5,325 72 % 5,491 71 % International (2) 452 18 % 417 17 % 1,300 17 % 1,338 18 % Other customers 25 1 % 19 1 % 89 1 % 49 1 % Intersegment sales 250 10 % 244 10 % 755 10 % 735 10 % Mission Systems sales 2,456 100 % 2,436 100 % 7,469 100 % 7,613 100 % Space Systems U.S. government (1) 2,967 94 % 2,507 94 % 8,473 94 % 7,401 93 % International (2) 105 3 % 92 3 % 261 3 % 301 4 % Other customers 63 2 % 49 2 % 173 2 % 145 2 % Intersegment sales 28 1 % 33 1 % 90 1 % 103 1 % Space Systems sales 3,163 100 % 2,681 100 % 8,997 100 % 7,950 100 % Total U.S. government (1) 7,654 86 % 7,452 85 % 22,731 86 % 23,007 85 % International (2) 1,210 13 % 1,185 14 % 3,506 13 % 3,751 14 % Other customers 107 1 % 83 1 % 332 1 % 270 1 % Total Sales $ 8,971 100 % $ 8,720 100 % $ 26,569 100 % $ 27,028 100 % (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.
Revenue from External Customers by Contract Type	Sales by Contract Type Three Months Ended September 30 Nine Months Ended September 30 2022 2021 2022 2021 $ in millions $ % (1) $ % (1) $ % (1) $ % (1) Aeronautics Systems Cost-type $ 1,185 48 % $ 1,358 51 % $ 3,678 48 % $ 4,110 48 % Fixed-price 1,294 52 % 1,319 49 % 3,915 52 % 4,381 52 % Intersegment sales 58 48 181 137 Aeronautics Systems sales 2,537 2,725 7,774 8,628 Defense Systems Cost-type 366 32 % 433 36 % 1,075 32 % 1,376 36 % Fixed-price 785 68 % 770 64 % 2,280 68 % 2,436 64 % Intersegment sales 194 206 567 586 Defense Systems sales 1,345 1,409 3,922 4,398 Mission Systems Cost-type 881 40 % 746 34 % 2,591 39 % 2,419 35 % Fixed-price 1,325 60 % 1,446 66 % 4,123 61 % 4,459 65 % Intersegment sales 250 244 755 735 Mission Systems sales 2,456 2,436 7,469 7,613 Space Systems Cost-type 2,192 70 % 1,931 73 % 6,271 70 % 5,800 74 % Fixed-price 943 30 % 717 27 % 2,636 30 % 2,047 26 % Intersegment sales 28 33 90 103 Space Systems sales 3,163 2,681 8,997 7,950 Total Cost-type 4,624 52 % 4,468 51 % 13,615 51 % 13,705 51 % Fixed-price 4,347 48 % 4,252 49 % 12,954 49 % 13,323 49 % Total Sales $ 8,971 $ 8,720 $ 26,569 $ 27,028 (1) Percentages calculated based on external customer sales.
Revenue from External Customers by Geographic Areas	Sales by Geographic Region Three Months Ended September 30 Nine Months Ended September 30 2022 2021 2022 2021 $ in millions $ % (2) $ % (2) $ % (2) $ % (2) Aeronautics Systems United States $ 2,138 85 % $ 2,317 87 % $ 6,581 87 % $ 7,381 86 % Asia/Pacific 165 7 % 239 9 % 560 7 % 722 9 % Europe 163 7 % 108 4 % 413 5 % 335 4 % All other (1) 13 1 % 13 — % 39 1 % 53 1 % Intersegment sales 58 48 181 137 Aeronautics Systems sales 2,537 2,725 7,774 8,628 Defense Systems United States 839 72 % 887 74 % 2,422 72 % 2,810 74 % Asia/Pacific 112 10 % 107 9 % 340 10 % 336 9 % Europe 101 9 % 78 6 % 297 9 % 233 6 % All other (1) 99 9 % 131 11 % 296 9 % 433 11 % Intersegment sales 194 206 567 586 Defense Systems sales 1,345 1,409 3,922 4,398 Mission Systems United States 1,754 79 % 1,775 81 % 5,414 81 % 5,540 81 % Asia/Pacific 159 7 % 114 5 % 435 6 % 372 5 % Europe 210 10 % 233 11 % 654 10 % 744 11 % All other (1) 83 4 % 70 3 % 211 3 % 222 3 % Intersegment sales 250 244 755 735 Mission Systems sales 2,456 2,436 7,469 7,613 Space Systems United States 3,030 97 % 2,556 97 % 8,646 97 % 7,546 97 % Asia/Pacific 33 1 % 10 — % 86 1 % 39 — % Europe 69 2 % 79 3 % 165 2 % 256 3 % All other (1) 3 — % 3 — % 10 — % 6 — % Intersegment sales 28 33 90 103 Space Systems sales 3,163 2,681 8,997 7,950 Total United States 7,761 87 % 7,535 87 % 23,063 87 % 23,277 86 % Asia/Pacific 469 5 % 470 5 % 1,421 5 % 1,469 5 % Europe 543 6 % 498 6 % 1,529 6 % 1,568 6 % All other (1) 198 2 % 217 2 % 556 2 % 714 3 % Total Sales $ 8,971 $ 8,720 $ 26,569 $ 27,028 (1) All other is principally comprised of the Middle East. (2) Percentages calculated based on external customer sales.

Basis of Presentation (Unaudi_3

Basis of Presentation (Unaudited) Sale of our IT and mission support services business (Details 1) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Jan. 30, 2021
Accounting Policies [Abstract]
Sale of our IT and mission support services business		$ 3,400
Pre-tax gain on sale of business	$ 2,000
Pretax profit of the IT and mission support services business	20
Sales for the IT and mission support services business	$ 162

Basis of Presentation (Unaudi_4

Basis of Presentation (Unaudited) Contract Estimates (Details 2) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Change in Accounting Estimate [Line Items]
Revenue	$ 59	$ 116	$ 363	$ 478
Operating income	844	1,043	2,695	4,909
Net earnings	$ 915	$ 1,063	$ 2,816	$ 4,295
Diluted earnings per share	$ 5.89	$ 6.63	$ 18.06	$ 26.55
Contracts Accounted for under Percentage of Completion [Member]
Change in Accounting Estimate [Line Items]
Operating income	$ 45	$ 109	$ 310	$ 453
Net earnings	$ 36	$ 86	$ 245	$ 358
Diluted earnings per share	$ 0.23	$ 0.54	$ 1.57	$ 2.21

Basis of Presentation (Unaudi_5

Basis of Presentation (Unaudited) Backlog and Contract Assets and Liabilities (Details 3) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Change in Contract with Customer, Liability [Abstract]
Contract with Customer, Liability, Revenue Recognized	$ 303	$ 261	$ 2,200	$ 1,800
Revenue from Contract with Customer [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 79,600		$ 79,600
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Explanation			Of our September 30, 2022 backlog, we expect to recognize approximately 40 percent as revenue over the next 12 months and 60 percent as revenue over the next 24 months, with the remainder to be recognized thereafter.

Basis of Presentation (Unaudi_6

Basis of Presentation (Unaudited) Property Plant and Equipment (Details 4) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Property, Plant and Equipment [Abstract]
Capital Expenditures Incurred but Not yet Paid	$ 118	$ 105
Non-cash Investing Activities from Landlord Funded Leasehold Activities	96
Non-cash Investing Activities from long-term financing directly with the supplier	46
Proceeds from sale of equipment to a customer	$ 100	$ 84

Basis of Presentation (Unaudi_7

Basis of Presentation (Unaudited) Accumulated Other Comprehensive Income (Loss) (Details 5) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Unamortized prior service credit	$ 1	$ 2
Cumulative translation adjustment and other, net	(167)	(145)
Total accumulated other comprehensive loss	$ (166)	$ (143)

Basis of Presentation (Unaudi_8

Basis of Presentation (Unaudited) EAC Change (Details 6) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Change in Accounting Estimate [Line Items]
Operating income	$ 844		$ 1,043	$ 2,695	$ 4,909
Contracts Accounted for under Percentage of Completion [Member]
Change in Accounting Estimate [Line Items]
Operating income	$ 45		109	$ 310	$ 453
Restricted Program [Member] \| Contracts Accounted for under Percentage of Completion [Member] \| Aeronautics Systems [Member]
Change in Accounting Estimate [Line Items]
Operating income		$ 67
F-35 \| Contracts Accounted for under Percentage of Completion [Member] \| Aeronautics Systems [Member]
Change in Accounting Estimate [Line Items]
Operating income			$ (42)

Earnings Per Share, Share Rep_3

Earnings Per Share, Share Repurchases and Dividends on Common Stock (Unaudited) Earnings Per Share and Dividends (Details 1) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended		3 Months Ended		9 Months Ended
	May 31, 2022	May 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share [Abstract]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements			0.7	0.6	0.6	0.5
Common stock dividends per share, declared (in dollars per share)		$ 1.57	$ 1.73	$ 1.57	$ 5.03	$ 4.59
Increase in quarterly common stock dividend (percent)	10%
Common Stock Repurchased					$ 1,000

Earnings Per Share, Share Rep_4

Earnings Per Share, Share Repurchases and Dividends on Common Stock (Unaudited) Share Repurchases (Details 2) - USD ($) $ / shares in Units, shares in Millions, $ in Millions			5 Months Ended	9 Months Ended		20 Months Ended	35 Months Ended
	Nov. 02, 2021	Feb. 01, 2021	Jun. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Oct. 31, 2021	Feb. 01, 2022	Jan. 24, 2022	Jun. 01, 2021	Jan. 25, 2021	Dec. 04, 2018
Share Repurchases - Notes to Table
Amount remaining under authorization for share repurchases				$ 3,100		$ 3,100
Accelerated Share Repurchase	$ 500	$ 2,000
Accelerated Share Repurchases, Payment	$ 500	$ 2,000
accelerated share repurchase initial receipt shares	1.2	5.9
Accelerated Share Repurchase Initial Receipt Monetary	$ 425	$ 1,700
Accelerated Share Repurchase Remaining Amount								$ 75		$ 300
Accelerated Share Repurchase Final Delivery Possible Settlement Shares								0.1		0.2
Accelerated Share Repurchase Share Price								$ 374.79		$ 327.29
December 2018 Share Repurchase Original Authorization [Member]
Share Repurchase [Line Items]
Amount Authorized												$ 3,000
Shares Retired							8.9
Average Cost Per Share							$ 337.18
Shares Repurchased				0	8.1
January 2021 Share Repurchase Program
Share Repurchase [Line Items]
Amount Authorized											$ 3,000
Shares Retired						4.6
Average Cost Per Share						$ 407.74
Shares Repurchased				2.4	0
Share Repurchases - Notes to Table
Shares repurchased amount						$ 1,900
Amount remaining under authorization for share repurchases				$ 1,100		$ 1,100
January 2022 Share Repurchase Program
Share Repurchase [Line Items]
Amount Authorized									$ 2,000
Shares Retired			0
Average Cost Per Share			$ 0
Shares Repurchased				0	0

Income Taxes (Unaudited) Effect

Income Taxes (Unaudited) Effective Income Tax Rate Reconciliation (Details 1) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Federal and foreign income tax expense	$ 175	$ 212	$ 568	$ 1,298
Effective income tax rate	16.10%	16.60%	16.80%	23.20%
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	$ 42	$ 43	$ 124	$ 142
Income Tax Reconciliation Deductions FDII	16	$ 12	46	$ 32
Income Taxes Receivable	$ 627		$ 627		$ 571

Income Taxes (Unaudited) Unreco

Income Taxes (Unaudited) Unrecognized Tax Benefit (Details 2) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Increase in Unrecognized Tax Benefits is Reasonably Possible	$ 120
Decrease in Unrecognized Tax Benefits is Reasonably Possible	110
Unrecognized Tax Benefit Related to Methods of Accounting	1,700
Unrecognized Tax Benefits Related to Methods of Accounting - 451(b)	449
Current unrecognized tax benefits	$ 657	$ 590

Fair Value of Financial Instr_3

Fair Value of Financial Instruments (Unaudited) (Details 1) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities	$ 320	$ 418
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities	299	393
Derivatives	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities	0	1
Derivatives	4	(1)
Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities	8	7
Derivatives	0	0
Fair Value, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities	307	401
Derivatives	4	(1)
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities	299	393
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities	0	1
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities	8	7
Fair Value, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable Securities	$ 13	$ 17

Amounts in Paragraphs - Fair Va

Amounts in Paragraphs - Fair Value of Financial Instruments (Unaudited) (Details 2) - USD ($) $ in Millions	Sep. 30, 2022	Jun. 15, 2022	Dec. 31, 2021	Sep. 02, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	$ 128		$ 120
Foreign Currency Cash Flow Hedge Derivative at Fair Value, Net	$ 0		$ 0
Principal Amount - NGSC Notes				$ 422
Principal Amount - Northrop Grumman Corporation Notes (Unregistered Notes)		$ 414		$ 422
Principal Amount - Northrop Grumman Corporation Notes (Registered Notes)		$ 414

Fair Value of Financial Instr_4

Fair Value of Financial Instruments (Unaudited) Long-term Debt (Details 3) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2022	Dec. 31, 2021	Mar. 01, 2021
Debt Instruments [Abstract]
Long-term Debt, Fair Value		$ 11,900	$ 15,100
2021 Note, Face Amount				$ 700
2021 Note, Interest Rate, Stated Percentage				3.50%
2022 Note, Face Amount				$ 1,500
2022 Note, Interest Rate, Stated Percentage				2.55%
Redemption Premium	$ 54

Investigations, Claims and Li_2

Investigations, Claims and Litigation (Unaudited) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2007	Oct. 19, 2022	Oct. 17, 2022	Sep. 30, 2022	Jul. 18, 2022	Jun. 27, 2022	Feb. 16, 2018	May 04, 2012
United States Postal Service
Loss Contingencies
Contract award	$ 875,000
United States Postal Service
Loss Contingencies
OffSettingDamages						$ 1,000
False Claims Act \| Threatened Litigation \| United States Postal Service
Loss Contingencies
CounterclaimForDamagesSought					$ 57,000		$ 193,000
Unpaid Portions of Contract Price and Direct Costs Incurred [Member] \| United States Postal Service
Loss Contingencies
Unbilled Receivables, net		$ 83,000				63,000		$ 63,000
Acts and Omissions with Adverse Affects on Performance and Obligations [Member] \| United States Postal Service
Loss Contingencies
Gain contingency, unrecorded amount								$ 115,000
Positive Outcome of Litigation - Damages \| United States Postal Service
Loss Contingencies
Gain contingency, unrecorded amount						$ 5,000
Positive Outcome of Litigation - Interest \| United States Postal Service
Loss Contingencies
Gain contingency, unrecorded amount		$ 7	$ 16,000	$ 16,000
Maximum \| United States Postal Service
Loss Contingencies
Loss Contingency, Estimate of Possible Loss				$ 410,000

Commitments and Contingencies_3

Commitments and Contingencies (Unaudited) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Site Contingency [Line Items]
Accrual for Environmental Remediation Costs	$ 584	$ 572
Loss Contingency, Range of Possible Loss, Portion Not Accrued	357	363
Recorded Third-Party Environmental Recoveries, Amount	503	$ 486
Financial Arrangements
Standby Unused Letters Of Credit and bank guarantees	393
Surety Bond Outstanding	$ 78
Line of Credit Facility [Line Items]
Debt Instrument, Covenant Compliance	the company was in compliance with all covenants under its credit agreements.
Line of Credit Facility [Table]
Line of Credit Facility, Covenant Terms, Maximum Debt to Capitalization Ratio	The company also cannot permit the ratio of its debt to capitalization (as set forth in the credit agreement) to exceed 65 percent.
2022 Five Year Term
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,500
Line of Credit Outstanding	0
2018 Five Year Term
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	2,000
Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper, Maximum Borrowing Capacity	2,000
Commercial Paper	0
Other Current Liabilities [Member]
Site Contingency [Line Items]
Accrual for Environmental Remediation Costs	200
Other Noncurrent Liabilities [Member]
Site Contingency [Line Items]
Accrual for Environmental Remediation Costs	384
Other Current Assets [Member]
Site Contingency [Line Items]
Recorded Third-Party Environmental Recoveries, Amount	178
Other Noncurrent Assets [Member]
Site Contingency [Line Items]
Recorded Third-Party Environmental Recoveries, Amount	$ 325

Retirement Benefits (Unaudite_3

Retirement Benefits (Unaudited) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Components of Net Periodic Benefit Cost
Net periodic benefit cost (benefit)			$ (895)	$ (818)
Defined contribution plan, employer contributions	$ 108	$ 99	429	476
Pension Benefits
Components of Net Periodic Benefit Cost
Service cost	92	104	276	311
Interest cost	285	263	853	790
Expected return on plan assets	(661)	(627)	(1,982)	(1,884)
Amortization of prior service credit	0	(3)	0	(7)
Net periodic benefit cost (benefit)	(284)	(263)	(853)	(790)
Defined benefit plan, contributions by Employer	26	26	77	79
OPB
Components of Net Periodic Benefit Cost
Service cost	2	4	6	12
Interest cost	12	13	36	40
Expected return on plan assets	(28)	(26)	(83)	(79)
Amortization of prior service credit	0	0	(1)	(1)
Net periodic benefit cost (benefit)	(14)	(9)	(42)	(28)
Defined benefit plan, contributions by Employer	$ 9	$ 8	$ 29	$ 29

Stock Compensation Plans and _3

Stock Compensation Plans and Other Compensation Arrangements (Unaudited) (Details) - USD ($) shares in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Rights and Restricted Performance Stock Rights Grant Date Aggregate Fair Value	$ 94	$ 89
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	0.1	0.1
Vesting period	3 years
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	0.2	0.2
Vesting period	3 years
Cash Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Cash Units and Cash Performance Units \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Compensation Cash-based Arrangements, Liability, Current and Noncurrent	$ 32	$ 31
Cash Units and Cash Performance Units \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Compensation Cash-based Arrangements, Liability, Current and Noncurrent	$ 183	$ 178
Cash Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years

Segment Information (Unaudite_3

Segment Information (Unaudited) Reconciliation to Consolidated Operating Income (Details 1) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Sales	$ 8,971	$ 8,720	$ 26,569	$ 27,028
Operating income	844	1,043	2,695	4,909
Pre-tax gain on sale of business				2,000
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	1,007	1,035	3,117	3,247
Operating Segments [Member] \| Aeronautics Systems [Member]
Segment Reporting Information [Line Items]
Sales	2,537	2,725	7,774	8,628
Operating income	262	265	827	873
Operating Segments [Member] \| Defense Systems [Member]
Segment Reporting Information [Line Items]
Sales	1,345	1,409	3,922	4,398
Operating income	158	175	481	529
Operating Segments [Member] \| Mission Systems [Member]
Segment Reporting Information [Line Items]
Sales	2,456	2,436	7,469	7,613
Operating income	368	372	1,166	1,177
Operating Segments [Member] \| Space Systems [Member]
Segment Reporting Information [Line Items]
Sales	3,163	2,681	8,997	7,950
Operating income	290	288	861	865
Intersegment sales
Segment Reporting Information [Line Items]
Sales	530	531	1,593	1,561
Operating income	71	65	218	197
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
FAS/CAS operating adjustment	(55)	61	(152)	98
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating income	$ (108)	$ (53)	$ (270)	$ 1,564

Segment Information (Unaudite_4

Segment Information (Unaudited) Sales by Customer Type (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue, Major Customer [Line Items]
Sales	$ 8,971	$ 8,720	$ 26,569	$ 27,028
Sales percentage	100%	100%	100%	100%
US Government
Revenue, Major Customer [Line Items]
Sales	$ 7,654	$ 7,452	$ 22,731	$ 23,007
Sales percentage	86%	85%	86%	85%
US Government \| Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 2,138	$ 2,312	$ 6,564	$ 7,366
Sales percentage	85%	85%	85%	85%
US Government \| Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 820	$ 877	$ 2,369	$ 2,749
Sales percentage	62%	62%	61%	63%
US Government \| Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 1,729	$ 1,756	$ 5,325	$ 5,491
Sales percentage	71%	72%	72%	71%
US Government \| Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 2,967	$ 2,507	$ 8,473	$ 7,401
Sales percentage	94%	94%	94%	93%
International(2)
Revenue, Major Customer [Line Items]
Sales	$ 1,210	$ 1,185	$ 3,506	$ 3,751
Sales percentage	13%	14%	13%	14%
International(2) \| Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 341	$ 360	$ 1,012	$ 1,110
Sales percentage	13%	13%	13%	13%
International(2) \| Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 312	$ 316	$ 933	$ 1,002
Sales percentage	23%	22%	24%	23%
International(2) \| Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 452	$ 417	$ 1,300	$ 1,338
Sales percentage	18%	17%	17%	18%
International(2) \| Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 105	$ 92	$ 261	$ 301
Sales percentage	3%	3%	3%	4%
Other Customers [Member]
Revenue, Major Customer [Line Items]
Sales	$ 107	$ 83	$ 332	$ 270
Sales percentage	1%	1%	1%	1%
Other Customers [Member] \| Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 0	$ 5	$ 17	$ 15
Sales percentage	0%	0%	0%	0%
Other Customers [Member] \| Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 19	$ 10	$ 53	$ 61
Sales percentage	1%	1%	1%	1%
Other Customers [Member] \| Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 25	$ 19	$ 89	$ 49
Sales percentage	1%	1%	1%	1%
Other Customers [Member] \| Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 63	$ 49	$ 173	$ 145
Sales percentage	2%	2%	2%	2%
Intersegment Sales [Member] \| Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 58	$ 48	$ 181	$ 137
Sales percentage	2%	2%	2%	2%
Intersegment Sales [Member] \| Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 194	$ 206	$ 567	$ 586
Sales percentage	14%	15%	14%	13%
Intersegment Sales [Member] \| Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 250	$ 244	$ 755	$ 735
Sales percentage	10%	10%	10%	10%
Intersegment Sales [Member] \| Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 28	$ 33	$ 90	$ 103
Sales percentage	1%	1%	1%	1%
Operating Segments [Member] \| Aeronautics Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 2,537	$ 2,725	$ 7,774	$ 8,628
Sales percentage	100%	100%	100%	100%
Operating Segments [Member] \| Defense Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 1,345	$ 1,409	$ 3,922	$ 4,398
Sales percentage	100%	100%	100%	100%
Operating Segments [Member] \| Mission Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 2,456	$ 2,436	$ 7,469	$ 7,613
Sales percentage	100%	100%	100%	100%
Operating Segments [Member] \| Space Systems [Member]
Revenue, Major Customer [Line Items]
Sales	$ 3,163	$ 2,681	$ 8,997	$ 7,950
Sales percentage	100%	100%	100%	100%

Segment Information (Unaudite_5

Segment Information (Unaudited) Sales by Contract Type (Details 3) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue, Contract Type [Line Items]
Sales	$ 8,971	$ 8,720	$ 26,569	$ 27,028
Sales percentage	100%	100%	100%	100%
Cost-type [Member]
Revenue, Contract Type [Line Items]
Sales	$ 4,624	$ 4,468	$ 13,615	$ 13,705
Sales percentage	52%	51%	51%	51%
Cost-type [Member] \| Aeronautics Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 1,185	$ 1,358	$ 3,678	$ 4,110
Sales percentage	48%	51%	48%	48%
Cost-type [Member] \| Defense Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 366	$ 433	$ 1,075	$ 1,376
Sales percentage	32%	36%	32%	36%
Cost-type [Member] \| Mission Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 881	$ 746	$ 2,591	$ 2,419
Sales percentage	40%	34%	39%	35%
Cost-type [Member] \| Space Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 2,192	$ 1,931	$ 6,271	$ 5,800
Sales percentage	70%	73%	70%	74%
Fixed-price [Member]
Revenue, Contract Type [Line Items]
Sales	$ 4,347	$ 4,252	$ 12,954	$ 13,323
Sales percentage	48%	49%	49%	49%
Fixed-price [Member] \| Aeronautics Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 1,294	$ 1,319	$ 3,915	$ 4,381
Sales percentage	52%	49%	52%	52%
Fixed-price [Member] \| Defense Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 785	$ 770	$ 2,280	$ 2,436
Sales percentage	68%	64%	68%	64%
Fixed-price [Member] \| Mission Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 1,325	$ 1,446	$ 4,123	$ 4,459
Sales percentage	60%	66%	61%	65%
Fixed-price [Member] \| Space Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 943	$ 717	$ 2,636	$ 2,047
Sales percentage	30%	27%	30%	26%
Intersegment sales \| Aeronautics Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 58	$ 48	$ 181	$ 137
Intersegment sales \| Defense Systems [Member]
Revenue, Contract Type [Line Items]
Sales	194	206	567	586
Intersegment sales \| Mission Systems [Member]
Revenue, Contract Type [Line Items]
Sales	250	244	755	735
Intersegment sales \| Space Systems [Member]
Revenue, Contract Type [Line Items]
Sales	28	33	90	103
Operating Segments [Member] \| Aeronautics Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 2,537	$ 2,725	$ 7,774	$ 8,628
Sales percentage	100%	100%	100%	100%
Operating Segments [Member] \| Defense Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 1,345	$ 1,409	$ 3,922	$ 4,398
Sales percentage	100%	100%	100%	100%
Operating Segments [Member] \| Mission Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 2,456	$ 2,436	$ 7,469	$ 7,613
Sales percentage	100%	100%	100%	100%
Operating Segments [Member] \| Space Systems [Member]
Revenue, Contract Type [Line Items]
Sales	$ 3,163	$ 2,681	$ 8,997	$ 7,950
Sales percentage	100%	100%	100%	100%

Segment Information (Unaudite_6

Segment Information (Unaudited) Sales by Geographic Location (Details 4) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue, Geographic Location [Line Items]
Sales	$ 8,971	$ 8,720	$ 26,569	$ 27,028
Sales percentage	100%	100%	100%	100%
United States
Revenue, Geographic Location [Line Items]
Sales	$ 7,761	$ 7,535	$ 23,063	$ 23,277
Sales percentage	87%	87%	87%	86%
United States \| Aeronautics Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 2,138	$ 2,317	$ 6,581	$ 7,381
Sales percentage	85%	87%	87%	86%
United States \| Defense Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 839	$ 887	$ 2,422	$ 2,810
Sales percentage	72%	74%	72%	74%
United States \| Mission Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 1,754	$ 1,775	$ 5,414	$ 5,540
Sales percentage	79%	81%	81%	81%
United States \| Space Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 3,030	$ 2,556	$ 8,646	$ 7,546
Sales percentage	97%	97%	97%	97%
Asia/Pacific
Revenue, Geographic Location [Line Items]
Sales	$ 469	$ 470	$ 1,421	$ 1,469
Sales percentage	5%	5%	5%	5%
Asia/Pacific \| Aeronautics Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 165	$ 239	$ 560	$ 722
Sales percentage	7%	9%	7%	9%
Asia/Pacific \| Defense Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 112	$ 107	$ 340	$ 336
Sales percentage	10%	9%	10%	9%
Asia/Pacific \| Mission Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 159	$ 114	$ 435	$ 372
Sales percentage	7%	5%	6%	5%
Asia/Pacific \| Space Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 33	$ 10	$ 86	$ 39
Sales percentage	1%	0%	1%	0%
Europe
Revenue, Geographic Location [Line Items]
Sales	$ 543	$ 498	$ 1,529	$ 1,568
Sales percentage	6%	6%	6%	6%
Europe \| Aeronautics Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 163	$ 108	$ 413	$ 335
Sales percentage	7%	4%	5%	4%
Europe \| Defense Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 101	$ 78	$ 297	$ 233
Sales percentage	9%	6%	9%	6%
Europe \| Mission Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 210	$ 233	$ 654	$ 744
Sales percentage	10%	11%	10%	11%
Europe \| Space Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 69	$ 79	$ 165	$ 256
Sales percentage	2%	3%	2%	3%
All other
Revenue, Geographic Location [Line Items]
Sales	$ 198	$ 217	$ 556	$ 714
Sales percentage	2%	2%	2%	3%
All other \| Aeronautics Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 13	$ 13	$ 39	$ 53
Sales percentage	1%	0%	1%	1%
All other \| Defense Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 99	$ 131	$ 296	$ 433
Sales percentage	9%	11%	9%	11%
All other \| Mission Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 83	$ 70	$ 211	$ 222
Sales percentage	4%	3%	3%	3%
All other \| Space Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 3	$ 3	$ 10	$ 6
Sales percentage	0%	0%	0%	0%
Intersegment sales \| Aeronautics Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 58	$ 48	$ 181	$ 137
Intersegment sales \| Defense Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	194	206	567	586
Intersegment sales \| Mission Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	250	244	755	735
Intersegment sales \| Space Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	28	33	90	103
Operating Segments [Member] \| Aeronautics Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 2,537	$ 2,725	$ 7,774	$ 8,628
Sales percentage	100%	100%	100%	100%
Operating Segments [Member] \| Defense Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 1,345	$ 1,409	$ 3,922	$ 4,398
Sales percentage	100%	100%	100%	100%
Operating Segments [Member] \| Mission Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 2,456	$ 2,436	$ 7,469	$ 7,613
Sales percentage	100%	100%	100%	100%
Operating Segments [Member] \| Space Systems [Member]
Revenue, Geographic Location [Line Items]
Sales	$ 3,163	$ 2,681	$ 8,997	$ 7,950
Sales percentage	100%	100%	100%	100%

Segment Information (Unaudite_7

Segment Information (Unaudited) Unallocated Corporate Income (Details 5) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($)
Segment Reporting [Abstract]
Pre-tax gain on sale of business	$ 2,000
Unallowable State Taxes and Transactions Costs from Divestiture	$ 192