Huntington Ingalls Industries (HII) 10-Q 2 May 24 2024 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2024	Apr. 26, 2024
Document And Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	001-34910
Entity Registrant Name	HUNTINGTON INGALLS INDUSTRIES, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	90-0607005
Entity Address, Address Line One	4101 Washington Avenue
Entity Address, City or Town	Newport News
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	23607
City Area Code	757
Local Phone Number	380-2000
Title of 12(b) Security	Common Stock
Trading Symbol	HII
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
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		39,433,340
Amendment Flag	false
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2024
Entity Central Index Key	0001501585
Current Fiscal Year End Date	--12-31

Condensed Consolidated Statemen

Condensed Consolidated Statements Of Operations and Comprehensive Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Sales and service revenues
Sales and service revenues	$ 2,805	$ 2,674
Cost of sales and service revenues
Income (loss) from operating investments, net	12	12
Other income and gains (losses), net	(1)	(1)
General and administrative expenses	232	220
Operating income (loss)	154	141
Other income (expense)
Interest expense	(21)	(24)
Non-operating retirement benefit	44	37
Other, net	7	9
Earnings (loss) before income taxes	184	163
Federal and foreign income tax expense (benefit)	31	34
Net earnings (loss)	$ 153	$ 129
Basic earnings (loss) per share (in dollars per share)	$ 3.87	$ 3.23
Weighted-average common shares outstanding (in shares)	39.5	39.9
Diluted earnings (loss) per share	$ 3.87	$ 3.23
Weighted-average diluted shares outstanding (in shares)	39.5	39.9
Dividends declared per share	$ 1.30	$ 1.24
Other comprehensive income (loss)
Change in unamortized benefit plan costs	$ 5	$ 4
Tax benefit (expense) for items of other comprehensive income	(2)	(1)
Other comprehensive income (loss), net of tax	3	3
Comprehensive income (loss)	156	132
Product [Member]
Sales and service revenues
Sales and service revenues	1,787	1,829
Cost of sales and service revenues
Cost of sales and service revenues	1,537	1,568
Service [Member]
Sales and service revenues
Sales and service revenues	1,018	845
Cost of sales and service revenues
Cost of sales and service revenues	$ 893	$ 756

Condensed Consolidated Statem_2

Condensed Consolidated Statements Of Financial Position (Unaudited) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Current Assets
Cash and cash equivalents	$ 10	$ 430
Accounts receivable, net	718	461
Contract assets	1,661	1,537
Inventoried costs, net	199	186
Income taxes receivable	140	183
Prepaid expenses and other current assets	105	83
Total current assets	2,833	2,880
Property, plant, and equipment, net	3,298	3,296
Operating lease assets	251	262
Goodwill	2,618	2,618
Other intangible assets, net	864	891
Pension plan assets	920	888
Miscellaneous other assets	383	380
Total assets	11,167	11,215
Current Liabilities
Trade accounts payable	608	554
Accrued employees' compensation	342	382
Short-term debt and current portion of long-term debt	203	231
Current portion of postretirement plan liabilities	129	129
Current portion of workers' compensation liabilities	225	224
Contract liabilities	936	1,063
Other current liabilities	505	449
Total current liabilities	2,948	3,032
Long-term debt	2,235	2,214
Pension plan liabilities	214	212
Other postretirement plan liabilities	239	241
Workers' compensation liabilities	451	449
Long-term operating lease liabilities	217	228
Deferred tax liabilities	351	367
Other long-term liabilities	386	379
Total liabilities	7,041	7,122
Commitments and Contingencies (Note 10)
Stockholders' Equity
Common stock	1	1
Additional paid-in capital	2,038	2,045
Retained earnings (deficit)	4,855	4,755
Treasury stock	(2,349)	(2,286)
Accumulated other comprehensive income (loss)	(419)	(422)
Total stockholders' equity	4,126	4,093
Total liabilities and stockholders' equity	$ 11,167	$ 11,215

Condensed Consolidated Statem_3

Condensed Consolidated Statements Of Financial Position (Unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	$ 5	$ 8
Accumulated depreciation	2,515	2,467
Accumulated amortization	$ 1,036	$ 1,009
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	150,000,000	150,000,000
Common stock, shares issued (in shares)	53,709,837	53,595,748
Common stock, shares outstanding (in shares)	39,509,640	39,618,880

Condensed Consolidated Statem_4

Condensed Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Activities
Net earnings (loss)	$ 153	$ 129
Adjustments to reconcile to net cash provided by (used in) operating activities
Depreciation	53	55
Amortization of intangibles	27	32
Amortization of debt issuance costs	2	2
Provision for expected credit losses	(3)
Stock-based compensation	14	12
Deferred income taxes	(17)	(30)
Loss (gain) on investments in marketable securities	(8)	(8)
Change in
Accounts Receivable	(253)	(119)
Contract assets	(124)	(58)
Inventoried costs	(13)	(7)
Prepaid expenses and other assets	25	30
Accounts payable and accruals	(34)	(31)
Retiree benefits	(27)	(18)
Other non-cash transactions, net	3	2
Net cash provided by (used in) operating activities	(202)	(9)
Investing Activities
Capital expenditure additions	(75)	(43)
Grant proceeds for capital expenditures	3	3
Investment in affiliates		(20)
Other investing activities, net	1
Net cash provided by (used in) investing activities	(71)	(60)
Financing Activities
Repayment of long-term debt	(145)	(10)
Proceeds from revolving credit facility borrowings	42
Repayment of revolving credit facility borrowings	(20)
Net borrowings on commercial paper	117
Dividends paid	(51)	(49)
Repurchases of common stock	(62)	(9)
Employee taxes on certain share-based payment arrangements	(25)	(12)
Other financing activities, net	(3)
Net cash provided by (used in) financing activities	(147)	(80)
Change in cash and cash equivalents	(420)	(149)
Cash and cash equivalents, beginning of period	430	467
Cash and cash equivalents, end of period	10	318
Supplemental Cash Flow Disclosure
Cash paid for interest	10	12
Non-Cash Investing and Financing Activities
Capital expenditures accrued in accounts payable	$ 6	$ 8

Condensed Consolidated Statem_5

Condensed Consolidated Statements Of Changes In Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings (Deficit)	Treasury Stock, Common	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2022	$ 3,489	$ 1	$ 2,022	$ 4,276	$ (2,211)	$ (599)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	129			129
Dividends declared	(49)			(49)
Stock-based compensation			2	(2)
Other comprehensive income (loss), net of tax	3					3
Treasury stock activity	(9)				(9)
Balance at Mar. 31, 2023	3,563	1	2,024	4,354	(2,220)	(596)
Balance at Dec. 31, 2023	4,093	1	2,045	4,755	(2,286)	(422)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	153			153
Dividends declared	(51)			(51)
Stock-based compensation	(9)		(7)	(2)
Other comprehensive income (loss), net of tax	3					3
Treasury stock activity	(63)				(63)
Balance at Mar. 31, 2024	$ 4,126	$ 1	$ 2,038	$ 4,855	$ (2,349)	$ (419)

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Changes in Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Dividends declared per share	$ 1.30	$ 1.24

Description of Business

Description of Business	3 Months Ended
	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	DESCRIPTION OF BUSINESS Huntington Ingalls Industries, Inc. ("HII" or the "Company") is a global, all-domain defense partner, building and delivering the world’s most powerful, survivable naval ships and technologies that safeguard America’s seas, sky, land, space, and cyber. HII is organized into three reportable segments: Ingalls Shipbuilding ("Ingalls"), Newport News Shipbuilding ("Newport News"), and Mission Technologies. For more than a century, the Company's Ingalls segment in Mississippi and Newport News segment in Virginia have built more ships in more ship classes than any other U.S. naval shipbuilder, making HII America's largest shipbuilder. The Mission Technologies segment develops integrated solutions that enable today's connected, all-domain force.

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	BASIS OF PRESENTATION Principles of Consolidation - The unaudited condensed consolidated financial statements of HII and its subsidiaries have been prepared in conformity with accounting principles generally accepted in the United States of America ("GAAP") and the instructions to Form 10-Q promulgated by the Securities and Exchange Commission ("SEC"). As used in the Notes to the Condensed Consolidated Financial Statements (Unaudited), the terms "HII" and "the Company" refer to HII and its subsidiaries. All intercompany transactions and balances are eliminated in consolidation. For classification of current assets and liabilities related to its long-term production contracts, the Company uses the duration of these contracts as its operating cycle, which is generally longer than one year. These unaudited condensed consolidated financial statements include all adjustments of a normal recurring nature considered necessary by management for a fair presentation of the unaudited condensed consolidated financial position, results of operations, and cash flows and should be read in conjunction with the Company's audited consolidated financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2023 (the "2023 Annual Report on Form 10-K"). The quarterly information is labeled using a calendar convention; that is, first quarter is consistently labeled as ending on March 31, second quarter as ending on June 30, and third quarter as ending on September 30. It is management's long-standing practice to establish interim closing dates using a "fiscal" calendar, which requires the businesses to close their 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 only exists for interim periods within a reporting year. Accounting Estimates - The preparation of the Company's unaudited condensed consolidated 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 revenues and expenses during the reporting period. Estimates have been prepared on the basis of the most current and best available information, and actual results could differ materially from those estimates. Fair Value of Financial Instruments - Except for the Company's long-term debt, the carrying amounts of the Company's financial instruments that are recorded at historical cost approximate fair value due to the short-term nature of the instruments and low credit risk associated with the respective counterparties. The Company maintains multiple grantor trusts to fund certain non-qualified pension plans. These trusts were valued at $226 million and $220 million as of March 31, 2024, and December 31, 2023, respectively, and are presented within miscellaneous other assets within the unaudited condensed consolidated statements of financial position. These trusts consist primarily of investments in marketable securities, which are held at fair value within Level 1 of the fair value hierarchy. The estimated fair values of the Company's total long-term debt (including current portion), excluding finance lease liabilities, as of March 31, 2024, and December 31, 2023, were $2,178 million and $2,309 million, respectively. The estimated fair values of the current portion of the Company's long-term debt, excluding finance lease liabilities, were $84 million and $229 million as of March 31, 2024, and December 31, 2023, respectively. The fair values of the Company's long-term debt were calculated based on recent trades of the Company's debt instruments in inactive markets, which fall within Level 2 of the fair value hierarchy. Debt - In January 2024, the Company prepaid the remaining balance of $145 million on its term loan due August 19, 2024. For further information on the Company's debt, see the Company's 2023 Annual Report on Form 10-K.

Accounting Standards Updates

Accounting Standards Updates	3 Months Ended
	Mar. 31, 2024
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Accounting Standards Updates	ACCOUNTING STANDARDS UPDATES In November 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The new guidance requires new tabular and narrative segment disclosures of significant expenses that are regularly reported to the chief operating decision maker and the nature of segment expense information used to manage operations. The new guidance is effective for annual reporting periods beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The Company is currently evaluating the impacts of the new guidance on its consolidated financial statements and related disclosures. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The new guidance requires disaggregated information about the effective tax rate reconciliation and additional information on taxes paid that meet a quantitative threshold. The new guidance is effective for annual reporting periods beginning after December 15, 2024, with early adoption permitted. The Company is currently evaluating the impacts of the new guidance on its consolidated financial statements and related disclosures.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2024
Stockholders' Equity Note [Abstract]
Stockholders' Equity [Text Block]	STOCKHOLDERS' EQUITY Treasury Stock - In January 2024 , the Company's board of directors authorized an increase in the Company's stock repurchase program from $3.2 billion to $3.8 billion and an extension of the term of the program to December 31, 2028. Repurchases are made from time to time at management's discretion in accordance with applicable federal securities laws. For the three months ended March 31, 2024, the Company repurchased 223,329 shares at an aggregate cost of $63 million, including $1 million of accrued excise tax. For the three months ended March 31, 2023, the Company repurchased 39,325 shares at an aggregate cost of $9 million. The cost of purchased shares is recorded as treasury stock in the unaudited condensed consolidated statements of financial position. Dividends - The Company paid cash dividends totaling $51 million and $49 million for the three months ended March 31, 2024 and 2023, respectively. Accumulated Other Comprehensive Loss - Other comprehensive income (loss) refers to gains and losses recorded as an element of stockholders' equity but excluded from net earnings. The accumulated other comprehensive loss was comprised of unamortized benefit plan costs of $419 million and $422 million as of March 31, 2024, and December 31, 2023, respectively. The changes in accumulated other comprehensive loss by component for the three months ended March 31, 2024 and 2023, were as follows: ($ in millions) Benefit Plans Other Total Balance as of December 31, 2022 $ (599) $ — $ (599) Amounts reclassified from accumulated other comprehensive loss Amortization of prior service cost 1 3 — 3 Amortization of net actuarial loss 1 1 — 1 Tax expense for items of other comprehensive income (1) — (1) Net current period other comprehensive income 3 — 3 Balance as of March 31, 2023 $ (596) $ — $ (596) Balance as of December 31, 2023 $ (422) $ — $ (422) Amounts reclassified from accumulated other comprehensive loss Amortization of prior service cost 1 3 — 3 Amortization of net actuarial loss 1 2 — 2 Tax expense for items of other comprehensive income (2) — (2) Net current period other comprehensive income 3 — 3 Balance as of March 31, 2024 $ (419) $ — $ (419) 1

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Earnings Per Share	EARNINGS PER SHARE Basic and diluted earnings per common share were calculated as follows: Three Months Ended (in millions, except per share amounts) 2024 2023 Net earnings $ 153 $ 129 Weighted-average common shares outstanding 39.5 39.9 Net dilutive effect of stock awards — — Dilutive weighted-average common shares outstanding 39.5 39.9 Earnings per share - basic $ 3.87 $ 3.23 Earnings per share - diluted $ 3.87 $ 3.23 Under the treasury stock method, the Company has excluded from the diluted share amounts presented above the effects of 0.4 million Restricted Performance Stock Rights ("RPSRs") and 0.1 million Restricted Stock Rights ("RSRs") for the three months ended March 31, 2024, and 0.5 million RPSRs for the three months ended March 31, 2023.

Revenue

Revenue	3 Months Ended
	Mar. 31, 2024
Disaggregation of Revenue [Abstract]
Revenue from Contract with Customer	REVENUE Disaggregation of Revenue The following tables present revenues on a disaggregated basis, in a manner that reconciles with the Company's reportable segment disclosures, for the following categories: product versus service type, customer type, contract type, and major program. The Company believes that this level of disaggregation provides investors with information to evaluate the Company’s financial performance and provides the Company with information to make capital allocation decisions in the most appropriate manner. For more information on the Company's contracts, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7 of the Company's 2023 Annual Report on Form 10-K. The following tables present revenues on a disaggregated basis: Three Months Ended March 31, 2024 ($ in millions) Ingalls Newport News Mission Technologies Intersegment Eliminations Total Revenue Type Product sales $ 586 $ 1,176 $ 25 $ — $ 1,787 Service revenues 67 257 694 — 1,018 Intersegment 2 1 31 (34) — Sales and service revenues $ 655 $ 1,434 $ 750 $ (34) $ 2,805 Customer Type Federal $ 653 $ 1,433 $ 717 $ — $ 2,803 Commercial — — 2 — 2 Intersegment 2 1 31 (34) — Sales and service revenues $ 655 $ 1,434 $ 750 $ (34) $ 2,805 Contract Type Firm fixed-price $ 1 $ 2 $ 82 $ — $ 85 Fixed-price incentive 586 788 2 — 1,376 Cost-type 66 643 593 — 1,302 Time and materials — — 42 — 42 Intersegment 2 1 31 (34) — Sales and service revenues $ 655 $ 1,434 $ 750 $ (34) $ 2,805 Three Months Ended March 31, 2023 ($ in millions) Ingalls Newport News Mission Technologies Intersegment Eliminations Total Revenue Type Product sales $ 534 $ 1,271 $ 24 $ — $ 1,829 Service revenues 41 234 570 — 845 Intersegment 2 1 30 (33) — Sales and service revenues $ 577 $ 1,506 $ 624 $ (33) $ 2,674 Customer Type Federal $ 575 $ 1,505 $ 581 $ — $ 2,661 Commercial — — 13 — 13 Intersegment 2 1 30 (33) — Sales and service revenues $ 577 $ 1,506 $ 624 $ (33) $ 2,674 Contract Type Firm fixed-price $ 2 $ — $ 75 $ — $ 77 Fixed-price incentive 533 829 — — 1,362 Cost-type 40 676 467 — 1,183 Time and materials — — 52 — 52 Intersegment 2 1 30 (33) — Sales and service revenues $ 577 $ 1,506 $ 624 $ (33) $ 2,674 Three Months Ended ($ in millions) 2024 2023 Major Programs Amphibious assault ships $ 352 $ 323 Surface combatants and coast guard cutters 300 253 Other 3 1 Total Ingalls 655 577 Aircraft carriers 792 837 Submarines 516 540 Other 126 129 Total Newport News 1,434 1,506 C5ISR, CEW&S, LVC 626 518 Other 124 106 Total Mission Technologies 750 624 Intersegment eliminations (34) (33) Sales and service revenues $ 2,805 $ 2,674 As of March 31, 2024, the Company had $48.4 billion of remaining performance obligations. The Company expects to recognize approximately 40% of its remaining performance obligations as revenue through 2025, an additional 30% through 2027, and the balance thereafter. Cumulative Catch-up Revenue Adjustments The following table presents the effect of net cumulative catch-up revenue adjustments on operating income and diluted earnings per share: Three Months Ended ($ in millions, except per share amounts) 2024 2023 Effect on operating income $ 2 $ 9 Effect on diluted earnings per share $ 0.03 $ 0.17 For the three months ended March 31, 2024, no individual favorable cumulative catch-up revenue adjustment was material to the Company's unaudited condensed consolidated statements of operations and comprehensive income. For the three months ended March 31, 2024, no individual unfavorable cumulative catch-up revenue adjustment was material to the Company's unaudited condensed consolidated statements of operations and comprehensive income. Cumulative catch-up revenue adjustments for the three months ended March 31, 2023, included a favorable adjustment of $15 million on a contract at the Company's Newport News segment, which increased diluted earnings per share by $0.30. Cumulative catch-up revenue adjustments for the three months ended March 31, 2023, included an unfavorable adjustment of $14 million on a contract at the Company's Newport News segment, which decreased diluted earnings per share by $0.28. Contract Balances The Company reports contract balances in a net contract asset or contract liability position on a contract-by-contract basis at the end of each reporting period. Net contract assets were comprised as follows: ($ in millions) March 31, 2024 December 31, 2023 Contract assets $ 1,661 $ 1,537 Contract liabilities 936 1,063 Net contract assets $ 725 $ 474

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2024
Segment Reporting [Abstract]
Segment Information	SEGMENT INFORMATION The following table presents segment results for the three months ended March 31, 2024 and 2023: Three Months Ended ($ in millions) 2024 2023 Sales and Service Revenues Ingalls $ 655 $ 577 Newport News 1,434 1,506 Mission Technologies 750 624 Intersegment eliminations (34) (33) Sales and service revenues $ 2,805 $ 2,674 Operating Income Ingalls $ 60 $ 55 Newport News 82 84 Mission Technologies 28 17 Segment operating income 170 156 Non-segment factors affecting operating income Operating FAS/CAS Adjustment (17) (19) Non-current state income taxes 1 4 Operating income $ 154 $ 141 Operating FAS/CAS Adjustment - The Operating FAS/CAS Adjustment represents the difference between the service cost component of our pension and other postretirement benefit plan expense determined in accordance with U.S. GAAP Financial Accounting Standards ("FAS") and our pension and other postretirement expense under U.S. Government Cost Accounting Standards ("CAS"). The following table presents the Company's assets by segment: ($ in millions) March 31, 2024 December 31, 2023 Assets Ingalls $ 1,674 $ 1,619 Newport News 4,846 4,612 Mission Technologies 3,219 3,161 Corporate 1,428 1,823 Total assets $ 11,167 $ 11,215

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The Company's earnings are primarily domestic, and its effective income tax rates on earnings from operations for the three months ended March 31, 2024 and 2023, were 16.8% and 20.9%, respectively. The lower effective tax rate differed from the federal statutory corporate income tax rate of 21% for the three months ended March 31, 2024, primarily due to research and development tax credits and income tax benefits associated with stock award settlement activity. The Company's unrecognized tax benefits increased by $2 million during the three months ended March 31, 2024. As of March 31, 2024, the estimated amounts of the Company's unrecognized tax benefits, excluding interest and penalties, were liabilities of $100 million. Assuming a sustainment of these tax positions, a reversal of $78 million of the accrued amounts would favorably affect the Company's effective federal income tax rate in future periods. The Company recognizes interest and penalties related to unrecognized tax benefits as income tax expense. For the three months ended March 31, 2024, interest resulting from the unrecognized tax benefits noted above increased income tax expense by $1 million. Non-current state income taxes include deferred state income taxes, which reflect the change in deferred state tax assets and liabilities and the tax expense or benefit associated with changes in unrecognized state tax benefits in the relevant period. These amounts are recorded within operating income. Current period state income tax expense is charged to contract costs and included in cost of sales and service revenues in segment operating income.

Investigations, Claims, and Lit

Investigations, Claims, and Litigation	3 Months Ended
	Mar. 31, 2024
Investigations, Claims, And Litigation [Abstract]
Investigations, Claims, And Litigation	INVESTIGATIONS, CLAIMS, AND LITIGATION The Company is involved in legal proceedings before various courts and administrative agencies, and is periodically subject to government examinations, inquiries and investigations. Pursuant to Financial Accounting Standards Board Accounting Standards Codification 450 - "Contingencies," the Company has accrued for losses associated with investigations, claims, and litigation when, and to the extent that, loss amounts related to the investigations, claims, and litigation are probable and can be reasonably estimated. The actual losses that might be incurred to resolve such investigations, claims, and litigation may be higher or lower than the amounts accrued. The Company has also provided footnote disclosure for matters for which a material loss is reasonably possible but a reserve has not been accrued because the likelihood of a material loss is not probable. Antitrust Complaint - On October 6, 2023, a class action antitrust lawsuit was filed against the Company and other defendants in the U.S. District Court for the Eastern District of Virginia. The lawsuit names several HII companies, among other companies, as defendants. The named plaintiffs generally allege that the defendant companies have adhered to a “gentlemen’s agreement” that prohibits any defendant from actively recruiting naval engineers from other defendants. The complaint seeks class certification, treble damages, and any other relief to which the plaintiffs are entitled. The District Court dismissed the lawsuit against all defendants in April 2024. COVID Insurance Claim - In September 2020, the Company filed a complaint against 32 reinsurers in the Superior Court, State of Vermont, Franklin Unit, seeking a judgment declaring that the Company's business interruption and other losses associated with COVID-19 are covered by the Company's property insurance program. The Company also initiated arbitration proceedings against six other reinsurers seeking similar relief. In July 2021, the Vermont court granted the reinsurers’ motion for judgment on the pleadings, which would have ended the Company’s claim. The Company appealed the decision to the Vermont Supreme Court, which reversed and remanded the lower court’s decision in September 2022, allowing the Company’s claim to proceed. No assurances can be provided regarding the ultimate resolution of this matter. U.S. Government Investigations and Claims - Departments and agencies of the U.S. Government have the authority to investigate various transactions and operations of the Company, and the results of such investigations may lead to administrative, civil, or criminal proceedings, the ultimate outcome of which could be fines, penalties, repayments or compensatory, treble, or other damages. U.S. Government regulations provide that certain findings against a contractor may also lead to suspension or debarment from future U.S. Government contracts or the loss of export privileges. Any suspension or debarment would have a material effect on the Company because of its reliance on government contracts. Asbestos Related Claims - HII and its predecessors-in-interest are defendants in a longstanding series of cases that have been and continue to be filed in various jurisdictions around the country, wherein former and current employees and various third parties allege exposure to asbestos containing materials while on or associated with HII premises or while working on vessels constructed or repaired by HII. In some instances, partial or full insurance coverage is available for the Company's liabilities. The costs to resolve these cases during the three months ended March 31, 2024 and 2023, were not material individually or in the aggregate. The Company’s estimate of asbestos-related liabilities is subject to uncertainty because such liabilities are influenced by many variables that are inherently difficult to predict. Although the Company believes the ultimate resolution of current cases will not have a material effect on its condensed consolidated financial position, results of operations, or cash flows, it cannot predict what new or revised claims or litigation might be asserted or what information might come to light and can, therefore, give no assurances regarding the ultimate outcome of asbestos related litigation. The Company is party to various other claims, legal proceedings, and investigations that arise in the ordinary course of business, including U.S. Government investigations that could result in administrative, civil, or criminal proceedings involving the Company. The Company is a contractor with the U.S. Government, and such proceedings can therefore include False Claims Act allegations against the Company. Although the Company believes that the resolution of these other claims, legal proceedings, and investigations will not have a material effect on its condensed consolidated financial position, results of operations, or cash flows, the Company cannot predict what new or revised claims or litigation might be asserted or what information might come to light and can, therefore, give no assurances regarding the ultimate outcome of these matters.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES Contract Performance Contingencies - Contract profit margins may include estimates of revenues for matters on which the customer and the Company have not reached agreement, such as settlements in the process of negotiation, contract changes, claims, and requests for equitable adjustment for unanticipated contract costs. These estimates are based upon management's best assessment of the underlying causal events and circumstances and recognized to the extent of expected recovery based upon contractual entitlements and the probability of successful negotiation with the customer. The Company believes its outstanding customer settlements will be resolved without material impact to its financial position, results of operations, or cash flows. Environmental Matters - The estimated cost to complete environmental remediation is accrued when it is probable that the Company will incur such costs in the future to address environmental conditions at currently or formerly owned or leased operating facilities, or at sites where it has been named a Potentially Responsible Party by the Environmental Protection Agency or similarly designated by another environmental agency, and the related costs can be estimated by management. These accruals do not include any litigation costs related to environmental matters, nor do they include amounts recorded as asset retirement obligations. Management estimates that as of March 31, 2024, the probable estimable future cost for environmental remediation was not material. Although management cannot predict whether new information gained as remediation progresses or the Company incurs additional remediation obligations will materially affect the estimated liability accrued, management does not believe that future remediation expenditures will have a material effect on the Company's consolidated financial position, results of operations, or cash flows. Financial Arrangements - In the ordinary course of business, HII uses letters of credit issued by commercial banks to support certain leases, insurance policies, and contractual performance obligations, as well as surety bonds issued by insurance companies principally to support the Company's self-insured workers' compensation plans. As of March 31, 2024, the Company had $12 million in issued but undrawn letters of credit and $360 million of surety bonds outstanding. U.S. Government Claims - From time to time, the U.S. Government communicates to the Company potential claims, disallowed costs, and penalties concerning prior costs incurred by the Company with which the U.S. Government disagrees. When such preliminary findings are presented, the Company and U.S. Government representatives engage in discussions, from which the Company evaluates the merits of the claims and assesses the amounts being questioned. Although the Company believes that the resolution of any of these matters will not have a material effect on its consolidated financial position, results of operations, or cash flows, it cannot predict the ultimate outcome of these matters. Other Matters - The Company has been in negotiations with a Mission Technologies customer since January 2023 to address issues related to a manufacturing contract, and the parties reached an agreement to settle the matter. The Company has recorded losses relating to the contract that were not material to the Company's consolidated financial position, results of operations, or cash flows. The Company previously disclosed an issue regarding the degree of corrosion of certain steel plates used to fabricate Friedman (NSC 11). The Company’s expectation regarding the resolution of the matter with the customer is included in contract cost and profit estimates. Those estimates include management's best assessment of the underlying causal events, contractual entitlements, and the probability of successful resolution with the customer. The Company does not expect the final resolution of the matter to have a material impact to the Company's consolidated financial position, results of operations, or cash flows. Collective Bargaining Agreements - Of the Company's more than 44,000 employees, approximately 45% are covered by a total of nine collective bargaining agreements and one site stabilization agreement. The Company believes its relationship with its employees is satisfactory.

Employee Pension And Other Post

Employee Pension And Other Postretirement Benefits	3 Months Ended
	Mar. 31, 2024
Retirement Benefits [Abstract]
Employee Pension and Other Postretirement Benefits	EMPLOYEE PENSION AND OTHER POSTRETIREMENT BENEFITS The Company provides eligible employees defined benefit pension plans, defined contribution benefit plans, and other postretirement benefit plans. The costs of the Company's defined benefit pension plans and other postretirement benefit plans for the three months ended March 31, 2024 and 2023, were as follows: Three Months Ended Pension Benefits Other Benefits ($ in millions) 2024 2023 2024 2023 Components of net periodic benefit cost Service cost $ 27 $ 28 $ 1 $ 1 Interest cost 80 86 5 5 Expected return on plan assets (134) (132) — — Amortization of prior service cost (credit) 4 4 (1) (1) Amortization of net actuarial loss (gain) 5 4 (3) (3) Net periodic benefit (income) cost $ (18) $ (10) $ 2 $ 2 The Company made the following contributions to its defined benefit pension plans and other postretirement benefit plans for the three months ended March 31, 2024 and 2023: Three Months Ended ($ in millions) 2024 2023 Pension plans Discretionary Qualified $ — $ — Non-qualified 3 2 Other benefit plans 7 8 Total contributions $ 10 $ 10 As of March 31, 2024, the Company anticipates no further significant cash contributions to its qualified defined benefit pension plans in 2024.

Stock Compensation Plans

Stock Compensation Plans	3 Months Ended
	Mar. 31, 2024
Share-Based Payment Arrangement [Abstract]
Stock Compensation Plans	STOCK COMPENSATION PLANS During the three months ended March 31, 2024 and 2023, the Company issued new stock awards as follows: Restricted Performance Stock Rights - For the three months ended March 31, 2024, the Company granted approximately 0.1 million RPSRs at a weighted average share price of $288.33. These rights are subject to cliff vesting on December 31, 2026. For the three months ended March 31, 2023, the Company granted approximately 0.1 million RPSRs at a weighted average share price of $215.20. These rights are subject to cliff vesting on December 31, 2025. All of the RPSRs are subject to the achievement of performance-based targets at the end of the respective vesting periods and will ultimately vest between 0% and 200% of grant date value. Restricted Stock Rights - For the three months ended March 31, 2024, the Company granted approximately 0.1 million compensation RSRs at a weighted average share price of $288.33. These rights vest 33 1/3% upon each of the first, second, and third anniversaries of the grant date. No compensation RSRs were granted for the three months ended March 31, 2023. Retention Restricted Stock Rights - Retention stock awards are granted to key employees primarily to ensure business continuity. For the three months ended March 31, 2024, the Company granted approximately 1,200 retention RSRs at a weighted average share price of $288.53, with cliff vesting one to two years from the grant date. For the three months ended March 31, 2023, the Company granted approximately 5,000 retention RSRs at a weighted average share price of $211.66, with cliff vesting two to three years from the grant date. The Company also received transfers of stock awards from employees in satisfaction of tax withholding obligations associated with the vesting of stock awards during the period. Because the stock awards are surrendered in lieu of payments of cash to settle tax obligations and the stock is not issued, the Company does not account for these transfers as treasury stock. The following table summarizes the status of the Company's outstanding stock awards as of March 31, 2024: Stock Awards Weighted-Average Weighted-Average Remaining Contractual Term Total stock awards 545 $ 221.58 1.4 Compensation Expense The Company recorded stock-based compensation for the value of awards granted to Company employees and non-employee members of the board of directors of $14 million and $12 million for the three months ended March 31, 2024 and 2023, respectively. The Company recorded tax benefits related to stock awards of $3 million and $2 million for the three months ended March 31, 2024 and 2023, respectively. The Company recognized tax benefits associated with the issuance of stock in settlement of stock awards of $8 million and $3 million for the three months ended March 31, 2024 and 2023, respectively. Unrecognized Compensation Expense As of March 31, 2024, the Company had $21 million of unrecognized compensation expense associated with RSRs granted in 2024, 2023, and 2022, which will be recognized over a weighted average period of approximately 1.8 years, and $51 million of unrecognized compensation expense associated with RPSRs granted in 2024, 2023, and 2022, which will be recognized over a weighted average period of 1.6 years.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net earnings (loss)	$ 153	$ 129

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Principles of Consolidation	Principles of Consolidation - The unaudited condensed consolidated financial statements of HII and its subsidiaries have been prepared in conformity with accounting principles generally accepted in the United States of America ("GAAP") and the instructions to Form 10-Q promulgated by the Securities and Exchange Commission ("SEC"). As used in the Notes to the Condensed Consolidated Financial Statements (Unaudited), the terms "HII" and "the Company" refer to HII and its subsidiaries. All intercompany transactions and balances are eliminated in consolidation. For classification of current assets and liabilities related to its long-term production contracts, the Company uses the duration of these contracts as its operating cycle, which is generally longer than one year. These unaudited condensed consolidated financial statements include all adjustments of a normal recurring nature considered necessary by management for a fair presentation of the unaudited condensed consolidated financial position, results of operations, and cash flows and should be read in conjunction with the Company's audited consolidated financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2023 (the "2023 Annual Report on Form 10-K").
Fiscal Period Policy	The quarterly information is labeled using a calendar convention; that is, first quarter is consistently labeled as ending on March 31, second quarter as ending on June 30, and third quarter as ending on September 30. It is management's long-standing practice to establish interim closing dates using a "fiscal" calendar, which requires the businesses to close their 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 only exists for interim periods within a reporting year.
Accounting Estimates	Accounting Estimates
Fair Value of Financial Instruments	Fair Value of Financial Instruments - Except for the Company's long-term debt, the carrying amounts of the Company's financial instruments that are recorded at historical cost approximate fair value due to the short-term nature of the instruments and low credit risk associated with the respective counterparties. The Company maintains multiple grantor trusts to fund certain non-qualified pension plans. These trusts were valued at $226 million and $220 million as of March 31, 2024, and December 31, 2023, respectively, and are presented within miscellaneous other assets within the unaudited condensed consolidated statements of financial position. These trusts consist primarily of investments in marketable securities, which are held at fair value within Level 1 of the fair value hierarchy. The estimated fair values of the Company's total long-term debt (including current portion), excluding finance lease liabilities, as of March 31, 2024, and December 31, 2023, were $2,178 million and $2,309 million, respectively. The estimated fair values of the current portion of the Company's long-term debt, excluding finance lease liabilities, were $84 million and $229 million as of March 31, 2024, and December 31, 2023, respectively. The fair values of the Company's long-term debt were calculated based on recent trades of the Company's debt instruments in inactive markets, which fall within Level 2 of the fair value hierarchy.
Debt Policy	Debt - In January 2024, the Company prepaid the remaining balance of $145 million on its term loan due August 19, 2024. For further information on the Company's debt, see the Company's 2023 Annual Report on Form 10-K.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2024
Stockholders' Equity Note [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The changes in accumulated other comprehensive loss by component for the three months ended March 31, 2024 and 2023, were as follows: ($ in millions) Benefit Plans Other Total Balance as of December 31, 2022 $ (599) $ — $ (599) Amounts reclassified from accumulated other comprehensive loss Amortization of prior service cost 1 3 — 3 Amortization of net actuarial loss 1 1 — 1 Tax expense for items of other comprehensive income (1) — (1) Net current period other comprehensive income 3 — 3 Balance as of March 31, 2023 $ (596) $ — $ (596) Balance as of December 31, 2023 $ (422) $ — $ (422) Amounts reclassified from accumulated other comprehensive loss Amortization of prior service cost 1 3 — 3 Amortization of net actuarial loss 1 2 — 2 Tax expense for items of other comprehensive income (2) — (2) Net current period other comprehensive income 3 — 3 Balance as of March 31, 2024 $ (419) $ — $ (419) 1

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Calculation of Basic and Diluted Earnings Per Share	Basic and diluted earnings per common share were calculated as follows: Three Months Ended (in millions, except per share amounts) 2024 2023 Net earnings $ 153 $ 129 Weighted-average common shares outstanding 39.5 39.9 Net dilutive effect of stock awards — — Dilutive weighted-average common shares outstanding 39.5 39.9 Earnings per share - basic $ 3.87 $ 3.23 Earnings per share - diluted $ 3.87 $ 3.23

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Mar. 31, 2024
Disaggregation of Revenue [Abstract]
Disaggregation of Revenue [Table Text Block]	The following tables present revenues on a disaggregated basis: Three Months Ended March 31, 2024 ($ in millions) Ingalls Newport News Mission Technologies Intersegment Eliminations Total Revenue Type Product sales $ 586 $ 1,176 $ 25 $ — $ 1,787 Service revenues 67 257 694 — 1,018 Intersegment 2 1 31 (34) — Sales and service revenues $ 655 $ 1,434 $ 750 $ (34) $ 2,805 Customer Type Federal $ 653 $ 1,433 $ 717 $ — $ 2,803 Commercial — — 2 — 2 Intersegment 2 1 31 (34) — Sales and service revenues $ 655 $ 1,434 $ 750 $ (34) $ 2,805 Contract Type Firm fixed-price $ 1 $ 2 $ 82 $ — $ 85 Fixed-price incentive 586 788 2 — 1,376 Cost-type 66 643 593 — 1,302 Time and materials — — 42 — 42 Intersegment 2 1 31 (34) — Sales and service revenues $ 655 $ 1,434 $ 750 $ (34) $ 2,805 Three Months Ended March 31, 2023 ($ in millions) Ingalls Newport News Mission Technologies Intersegment Eliminations Total Revenue Type Product sales $ 534 $ 1,271 $ 24 $ — $ 1,829 Service revenues 41 234 570 — 845 Intersegment 2 1 30 (33) — Sales and service revenues $ 577 $ 1,506 $ 624 $ (33) $ 2,674 Customer Type Federal $ 575 $ 1,505 $ 581 $ — $ 2,661 Commercial — — 13 — 13 Intersegment 2 1 30 (33) — Sales and service revenues $ 577 $ 1,506 $ 624 $ (33) $ 2,674 Contract Type Firm fixed-price $ 2 $ — $ 75 $ — $ 77 Fixed-price incentive 533 829 — — 1,362 Cost-type 40 676 467 — 1,183 Time and materials — — 52 — 52 Intersegment 2 1 30 (33) — Sales and service revenues $ 577 $ 1,506 $ 624 $ (33) $ 2,674 Three Months Ended ($ in millions) 2024 2023 Major Programs Amphibious assault ships $ 352 $ 323 Surface combatants and coast guard cutters 300 253 Other 3 1 Total Ingalls 655 577 Aircraft carriers 792 837 Submarines 516 540 Other 126 129 Total Newport News 1,434 1,506 C5ISR, CEW&S, LVC 626 518 Other 124 106 Total Mission Technologies 750 624 Intersegment eliminations (34) (33) Sales and service revenues $ 2,805 $ 2,674
Schedule of Change in Accounting Estimate	The following table presents the effect of net cumulative catch-up revenue adjustments on operating income and diluted earnings per share: Three Months Ended ($ in millions, except per share amounts) 2024 2023 Effect on operating income $ 2 $ 9 Effect on diluted earnings per share $ 0.03 $ 0.17
Contract with Customer, Contract Asset, Contract Liability, and Receivable	Net contract assets were comprised as follows: ($ in millions) March 31, 2024 December 31, 2023 Contract assets $ 1,661 $ 1,537 Contract liabilities 936 1,063 Net contract assets $ 725 $ 474

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2024
Segment Reporting [Abstract]
Segment operating results	The following table presents segment results for the three months ended March 31, 2024 and 2023: Three Months Ended ($ in millions) 2024 2023 Sales and Service Revenues Ingalls $ 655 $ 577 Newport News 1,434 1,506 Mission Technologies 750 624 Intersegment eliminations (34) (33) Sales and service revenues $ 2,805 $ 2,674 Operating Income Ingalls $ 60 $ 55 Newport News 82 84 Mission Technologies 28 17 Segment operating income 170 156 Non-segment factors affecting operating income Operating FAS/CAS Adjustment (17) (19) Non-current state income taxes 1 4 Operating income $ 154 $ 141
Segment assets	The following table presents the Company's assets by segment: ($ in millions) March 31, 2024 December 31, 2023 Assets Ingalls $ 1,674 $ 1,619 Newport News 4,846 4,612 Mission Technologies 3,219 3,161 Corporate 1,428 1,823 Total assets $ 11,167 $ 11,215

Employee Pension and Other Po_2

Employee Pension and Other Postretirement Benefits (Tables)	3 Months Ended
	Mar. 31, 2024
Retirement Benefits [Abstract]
Schedule of Net Benefit Costs	The costs of the Company's defined benefit pension plans and other postretirement benefit plans for the three months ended March 31, 2024 and 2023, were as follows: Three Months Ended Pension Benefits Other Benefits ($ in millions) 2024 2023 2024 2023 Components of net periodic benefit cost Service cost $ 27 $ 28 $ 1 $ 1 Interest cost 80 86 5 5 Expected return on plan assets (134) (132) — — Amortization of prior service cost (credit) 4 4 (1) (1) Amortization of net actuarial loss (gain) 5 4 (3) (3) Net periodic benefit (income) cost $ (18) $ (10) $ 2 $ 2
Schedule of Defined Benefit Plans Disclosures, Cash Contributions	The Company made the following contributions to its defined benefit pension plans and other postretirement benefit plans for the three months ended March 31, 2024 and 2023: Three Months Ended ($ in millions) 2024 2023 Pension plans Discretionary Qualified $ — $ — Non-qualified 3 2 Other benefit plans 7 8 Total contributions $ 10 $ 10

Stock Compensation Plans (Table

Stock Compensation Plans (Tables)	3 Months Ended
	Mar. 31, 2024
Share-Based Payment Arrangement [Abstract]
Schedule of Status of Stock Awards	The following table summarizes the status of the Company's outstanding stock awards as of March 31, 2024: Stock Awards Weighted-Average Weighted-Average Remaining Contractual Term Total stock awards 545 $ 221.58 1.4

Description of Business (Narrat

Description of Business (Narrative) (Details)	3 Months Ended
	Mar. 31, 2024 segments
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments	3

Basis of Presentation (Narrativ

Basis of Presentation (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Assets held in rabbi trusts	$ 226	$ 220
Fair value of total long term debt, excluding finance lease liabilities	2,178	2,309
Fair value of current portion of long-term debt, excluding finance lease liabilities	$ 84	229
Term loan due August 19, 2024 | Term Loan
Debt Instrument [Line Items]
Long-term Debt		$ 145

Stockholders' Equity (Narrative

Stockholders' Equity (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Jan. 30, 2024	Dec. 31, 2023	Dec. 31, 2022	Nov. 05, 2019
Stockholders' Equity [Line Items]
Amount authorized for stock repurchase program			$ 3,800			$ 3,200
Repurchased shares of treasury stock	223,329	39,325
Treasury stock activity	$ 63	$ 9
Dividends paid	51	49
Accumulated other comprehensive income (loss)	(419)	(596)		$ (422)	$ (599)
Benefit Plans
Stockholders' Equity [Line Items]
Accumulated other comprehensive income (loss)	(419)	(596)		$ (422)	$ (599)
Treasury Stock, Common
Stockholders' Equity [Line Items]
Treasury stock activity	63	$ 9
Excise tax on share repurchases	$ 1

Stockholders' Equity Accumulate

Stockholders' Equity Accumulated Other Comprehensive Income (Loss) (Table) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning		$ (422)	$ (599)
Amortization of prior service cost (credit)	[1]	3	3
Amortization of net actuarial loss (gain)	[1]	2	1
Tax benefit (expense) for items of other comprehensive income		(2)	(1)
Other comprehensive income (loss), net of tax		3	3
Balance, ending		(419)	(596)
Reclassification out of AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax benefit (expense) for items of other comprehensive income		(2)	(1)
Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning		(422)	(599)
Amortization of prior service cost (credit)	[1]	3	3
Amortization of net actuarial loss (gain)	[1]	2	1
Tax benefit (expense) for items of other comprehensive income		(2)	(1)
Other comprehensive income (loss), net of tax		3	3
Balance, ending		$ (419)	$ (596)
[1]These accumulated comprehensive loss components are included in the computation of net periodic benefit cost. See Note 11: Employee Pension and Other Postretirement Benefits. The tax expense recorded in stockholders' equity for the amounts reclassified from accumulated other comprehensive loss for the three months ended March 31, 2024 and 2023, was $2 million and $1 million, respectively.

Basic and Diluted Earnings Per

Basic and Diluted Earnings Per Share (Table) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net earnings (loss)	$ 153	$ 129
Weighted-average common shares outstanding (in shares)	39.5	39.9
Dilutive weighted-average common shares outstanding (in shares)	39.5	39.9
Earnings (loss) per share - basic (in dollars per share)	$ 3.87	$ 3.23
Earnings (loss) per share - diluted (in dollars per share)	$ 3.87	$ 3.23

Earnings Per Share (Narrative)

Earnings Per Share (Narrative) (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Restricted performance stock rights
Antidilutive Securities Excluded from Computation of Earnings Per Share
Number of shares from stock awards excluded from computation of earnings per share	0.4	0.5
Restricted stock rights
Antidilutive Securities Excluded from Computation of Earnings Per Share
Number of shares from stock awards excluded from computation of earnings per share	0.1

Revenue (Table) (Details)

Revenue (Table) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Sales and service revenues	$ 2,805	$ 2,674
Intersegment Elimination
Disaggregation of Revenue [Line Items]
Sales and service revenues	(34)	(33)
Firm fixed-price
Disaggregation of Revenue [Line Items]
Sales and service revenues	85	77
Fixed-price incentive
Disaggregation of Revenue [Line Items]
Sales and service revenues	1,376	1,362
Cost-type
Disaggregation of Revenue [Line Items]
Sales and service revenues	1,302	1,183
Time-and-materials
Disaggregation of Revenue [Line Items]
Sales and service revenues	42	52
Federal
Disaggregation of Revenue [Line Items]
Sales and service revenues	2,803	2,661
Commercial
Disaggregation of Revenue [Line Items]
Sales and service revenues	2	13
Product [Member]
Disaggregation of Revenue [Line Items]
Sales and service revenues	1,787	1,829
Service [Member]
Disaggregation of Revenue [Line Items]
Sales and service revenues	1,018	845
Ingalls | Intersegment Elimination
Disaggregation of Revenue [Line Items]
Sales and service revenues	2	2
Ingalls | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	655	577
Ingalls | Amphibious assault ships | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	352	323
Ingalls | Surface combatants and coast guard cutters | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	300	253
Ingalls | Other programs | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	3	1
Ingalls | Firm fixed-price | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	1	2
Ingalls | Fixed-price incentive | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	586	533
Ingalls | Cost-type | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	66	40
Ingalls | Federal | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	653	575
Ingalls | Product [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	586	534
Ingalls | Service [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	67	41
Newport News | Intersegment Elimination
Disaggregation of Revenue [Line Items]
Sales and service revenues	1	1
Newport News | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	1,434	1,506
Newport News | Aircraft carriers | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	792	837
Newport News | Submarines | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	516	540
Newport News | Other programs | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	126	129
Newport News | Firm fixed-price | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	2
Newport News | Fixed-price incentive | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	788	829
Newport News | Cost-type | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	643	676
Newport News | Federal | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	1,433	1,505
Newport News | Product [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	1,176	1,271
Newport News | Service [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	257	234
Mission Technologies | Intersegment Elimination
Disaggregation of Revenue [Line Items]
Sales and service revenues	31	30
Mission Technologies | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	750	624
Mission Technologies | C5ISR, CEW&S, LVC | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	626	518
Mission Technologies | Other programs | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	124	106
Mission Technologies | Firm fixed-price | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	82	75
Mission Technologies | Fixed-price incentive | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	2
Mission Technologies | Cost-type | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	593	467
Mission Technologies | Time-and-materials | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	42	52
Mission Technologies | Federal | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	717	581
Mission Technologies | Commercial | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	2	13
Mission Technologies | Product [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	25	24
Mission Technologies | Service [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Sales and service revenues	$ 694	$ 570

Revenue (Narrative) (Details)

Revenue (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 48,400
Revenue, performance obligation, recognition percentage, year two	40%
Revenue, performance obligation, recognition percentage, year four	30%
Increase (Decrease) in Net Contract Assets	$ 251
Contract with Customer, Liability, Revenue Recognized	641	$ 551
Change in Accounting Estimate
Operating Income (Loss)	$ 154	$ 141
Diluted earnings (loss) per share	$ 3.87	$ 3.23
Contracts Accounted for under Percentage of Completion
Change in Accounting Estimate
Operating Income (Loss)	$ 2	$ 9
Diluted earnings (loss) per share	$ 0.03	$ 0.17
Contracts Accounted for under Percentage of Completion | Newport News contract
Change in Accounting Estimate
Operating Income (Loss)		$ 15
Diluted earnings (loss) per share		$ 0.30
Contracts Accounted for under Percentage of Completion | Newport News contract #2
Change in Accounting Estimate
Operating Income (Loss)		$ (14)
Diluted earnings (loss) per share		$ (0.28)

Change in Accounting Estimate (

Change in Accounting Estimate (Table) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Change in Accounting Estimate
Operating Income (Loss)	$ 154	$ 141
Diluted earnings (loss) per share	$ 3.87	$ 3.23
Contracts Accounted for under Percentage of Completion
Change in Accounting Estimate
Operating Income (Loss)	$ 2	$ 9
Diluted earnings (loss) per share	$ 0.03	$ 0.17

Net Contract Asset (Table) (Det

Net Contract Asset (Table) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Contract assets	$ 1,661	$ 1,537
Contract liabilities	936	1,063
Net contract assets	$ 725	$ 474

Segment Operating Results (Tabl

Segment Operating Results (Table) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Sales and Service Revenues
Sales and service revenue	$ 2,805	$ 2,674
Operating Income (Loss)
Operating income (loss)	154	141
Intersegment Elimination
Sales and Service Revenues
Sales and service revenue	(34)	(33)
Operating Segments
Operating Income (Loss)
Operating income (loss)	170	156
Corporate, Non-Segment
Non-segment factors affecting operating income (loss)
Operating FAS/CAS Adjustment	(17)	(19)
Non-current state income taxes	1	4
Ingalls | Intersegment Elimination
Sales and Service Revenues
Sales and service revenue	2	2
Ingalls | Operating Segments
Sales and Service Revenues
Sales and service revenue	655	577
Operating Income (Loss)
Operating income (loss)	60	55
Newport News | Intersegment Elimination
Sales and Service Revenues
Sales and service revenue	1	1
Newport News | Operating Segments
Sales and Service Revenues
Sales and service revenue	1,434	1,506
Operating Income (Loss)
Operating income (loss)	82	84
Mission Technologies | Intersegment Elimination
Sales and Service Revenues
Sales and service revenue	31	30
Mission Technologies | Operating Segments
Sales and Service Revenues
Sales and service revenue	750	624
Operating Income (Loss)
Operating income (loss)	$ 28	$ 17

Segment Assets (Table) (Details

Segment Assets (Table) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Segment Reporting Information
Assets	$ 11,167	$ 11,215
Ingalls
Segment Reporting Information
Assets	1,674	1,619
Newport News
Segment Reporting Information
Assets	4,846	4,612
Mission Technologies
Segment Reporting Information
Assets	3,219	3,161
Corporate
Segment Reporting Information
Assets	$ 1,428	$ 1,823

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Tax Contingency [Line Items]
Effective income tax rate	16.80%	20.90%
Unrecognized Tax Benefits, Period Increase (Decrease)	$ 2
Unrecognized Tax Benefits	100
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	78
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 1

Investigations, Claims, and L_2

Investigations, Claims, and Litigation (Narrative) (Details)	3 Months Ended
	Mar. 31, 2024 numberOfReinsurers
Loss Contingencies
Number of reinsurers/defendants	32
Arbitration
Loss Contingencies
Number of reinsurers/defendants	6

Commitments and Contingencies (

Commitments and Contingencies (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)
Commitments and Contingencies
Percentage of workforce subject to Collective Bargaining Arrangements	45%
Number of Collective Bargaining Agreements	9
Number of site stabilization agreements	1
Surety Bonds Outstanding
Commitments and Contingencies
Surety bonds outstanding	$ 360
Revolving Credit Facility [Member]
Commitments and Contingencies
Letters of credit issued but undrawn	$ 12
Minimum
Commitments and Contingencies
Entity Number of Employees	44,000

Employee Pension and Other Po_3

Employee Pension and Other Postretirement Benefits Net Benefit Costs (Table) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pension Benefits
Defined Benefit Plan Disclosure
Service cost	$ 27	$ 28
Interest cost	80	86
Expected return on plan assets	(134)	(132)
Amortization of prior service cost (credit)	4	4
Amortization of net actuarial loss (gain)	5	4
Net periodic benefit (income) cost	(18)	(10)
Other Benefits
Defined Benefit Plan Disclosure
Service cost	1	1
Interest cost	5	5
Amortization of prior service cost (credit)	(1)	(1)
Amortization of net actuarial loss (gain)	(3)	(3)
Net periodic benefit (income) cost	$ 2	$ 2

Employee Pension and Other Po_4

Employee Pension and Other Postretirement Benefits Cash Contributions (Table) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Defined Benefit Plan Disclosure
Other benefit plans	$ 7	$ 8
Total contributions	10	10
Discretionary Contribution | Non-qualified
Defined Benefit Plan Disclosure
Pension contributions	$ 3	$ 2

Stock Compensation Plans (Narra

Stock Compensation Plans (Narrative) (Details) - $ / shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Stock awards
Stock rights, weighted-average grant date fair value	$ 221.58
Restricted performance stock rights
Stock awards
Stock rights, granted	100,000	100,000
Stock rights, weighted-average grant date fair value	$ 288.33	$ 215.20
Restricted performance stock rights | Minimum
Stock awards
Restricted performance stock rights ultimate vesting percentage	0%
Restricted performance stock rights | Maximum
Stock awards
Restricted performance stock rights ultimate vesting percentage	200%
Restricted stock rights
Stock awards
Stock rights, granted	100,000
Stock rights, weighted-average grant date fair value	$ 288.33
Restricted stock rights | Share-Based Payment Arrangement, Tranche One
Stock awards
Stock rights, vesting percentage	33.33%
Restricted stock rights | Share-Based Payment Arrangement, Tranche Two
Stock awards
Stock rights, vesting percentage	33.33%
Restricted stock rights | Share-Based Payment Arrangement, Tranche Three
Stock awards
Stock rights, vesting percentage	33.33%
Retention restricted stock rights
Stock awards
Stock rights, granted	1,200	5,000
Stock rights, weighted-average grant date fair value	$ 288.53	$ 211.66

Schedule of Status of Stock Awa

Schedule of Status of Stock Awards (Table) (Details) shares in Thousands	3 Months Ended
	Mar. 31, 2024 $ / shares shares
Stock awards
Stock awards, outstanding | shares	545
Stock awards, weighted-average grant date fair value | $ / shares	$ 221.58
Stock awards, weighted-average remaining contractual term	1 year 4 months 24 days

Stock Compensation Plans Compen

Stock Compensation Plans Compensation and Unrecognized Compensation Expense (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Compensation Expense [Abstract]
Share-based Payment Arrangement, Expense	$ 14	$ 12
Tax benefits for stock-based compensation	3	2
Stock Awards [Member]
Compensation Expense [Abstract]
Employee Service Share-Based Compensation, Tax Benefit Realized From Issuance Of Instruments Other Than Options	8	$ 3
Restricted stock rights
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation expense	$ 21
Unrecognized compensation expense, period for recognition	1 year 9 months 18 days
Restricted performance stock rights
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation expense	$ 51
Unrecognized compensation expense, period for recognition	1 year 7 months 6 days