Huntington Ingalls Industries (HII) 10-Q 7 May 20 2020 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2020	May 01, 2020
Document And Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
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		40,474,252
Amendment Flag	false
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2020
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, 2020	Mar. 31, 2019
Sales and service revenues
Sales and service revenues	$ 2,263	$ 2,080
Cost of sales and service revenues
Income (loss) from operating investments, net	6	4
General and administrative expenses	214	171
Operating income (loss)	215	161
Other income (expense)
Interest expense	(16)	(16)
Non-operating retirement benefit (expense)	30	3
Other, net	(13)	1
Earnings (loss) before income taxes	216	149
Federal and foreign income taxes	44	31
Net earnings (loss)	$ 172	$ 118
Basic earnings (loss) per share (in dollars per share)	$ 4.23	$ 2.85
Weighted-average common shares outstanding (in shares)	40.7	41.4
Diluted earnings (loss) per share	$ 4.23	$ 2.85
Weighted-average diluted shares outstanding (in shares)	40.7	41.4
Dividends declared per share	$ 1.03	$ 0.86
Other comprehensive income (loss)
Change in unamortized benefit plan costs	$ 23	$ 25
Other	(2)
Tax benefit (expense) for items of other comprehensive income	(6)	(6)
Other comprehensive income (loss), net of tax	15	19
Comprehensive income (loss)	187	137
Product [Member]
Sales and service revenues
Sales and service revenues	1,624	1,490
Cost of sales and service revenues
Cost of sales and service revenues	1,290	1,258
Service [Member]
Sales and service revenues
Sales and service revenues	639	590
Cost of sales and service revenues
Cost of sales and service revenues	$ 550	$ 494

Condensed Consolidated Statem_2

Condensed Consolidated Statements Of Financial Position (Unaudited) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Current Assets
Cash and cash equivalents	$ 28	$ 75
Accounts receivable, net	418	318
Contract assets	1,211	989
Inventoried costs, net	154	136
Income taxes receivable	108	148
Assets held for sale	178	95
Prepaid expenses and other current assets	40	24
Total current assets	2,137	1,785
Property, plant, and equipment, net	2,848	2,832
Operating lease assets	185	201
Goodwill	1,648	1,373
Other intangible assets, net	481	492
Deferred tax assets	85	108
Miscellaneous other assets	231	240
Total assets	7,615	7,031
Current Liabilities
Trade accounts payable	536	497
Accrued employees' compensation	265	265
Short-term debt and current portion of long-term debt	88
Current portion of postretirement plan liabilities	130	130
Current portion of workers' compensation liabilities	229	225
Contract liabilities	387	373
Liabilities held for sale	92	77
Other current liabilities	353	323
Total current liabilities	2,080	1,890
Long-term debt	1,667	1,286
Pension plan liabilities	941	975
Other postretirement plan liabilities	378	380
Workers' compensation liabilities	462	457
Long-term operating lease liabilities	153	164
Other long-term liabilities	291	291
Total liabilities	5,972	5,443
Commitments and Contingencies (Note 16)
Stockholders' Equity
Common stock	1	1
Additional paid-in capital	1,955	1,961
Retained earnings (deficit)	3,139	3,009
Treasury stock	(2,058)	(1,974)
Accumulated other comprehensive income (loss)	(1,394)	(1,409)
Total stockholders' equity	1,643	1,588
Total liabilities and stockholders' equity	$ 7,615	$ 7,031

Condensed Consolidated Statem_3

Condensed Consolidated Statements Of Financial Position (Unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	$ 3	$ 3
Accumulated depreciation	1,939	1,961
Accumulated amortization	$ 610	$ 599
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)	53,300,000	53,200,000
Common stock, shares outstanding (in shares)	40,500,000	40,800,000

Condensed Consolidated Statem_4

Condensed Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating Activities
Net earnings (loss)	$ 172	$ 118
Adjustments to reconcile to net cash provided by (used in) operating activities
Depreciation	47	41
Amortization of purchased intangibles	11	11
Amortization of debt issuance costs	1	1
Provision for doubtful accounts		(2)
Stock-based compensation	7	5
Deferred income taxes	18	16
Loss (gain) on investments in marketable securities	16	(7)
Change in
Accounts Receivable	(93)	(112)
Contract assets	(140)	(229)
Inventoried costs	(6)	(2)
Prepaid expenses and other assets	(1)	(3)
Accounts payable and accruals	46	147
Retiree benefits	(13)	25
Other non-cash transactions, net	3	2
Net cash provided by (used in) operating activities	68	11
Investing Activities
Capital expenditure additions	(71)	(110)
Grant proceeds for capital expenditures	5	36
Acquisitions of businesses, net of cash received	(378)	(195)
Net cash provided by (used in) investing activities	(444)	(269)
Financing Activities
Proceeds from revolving credit facility borrowings	385	1,179
Repayment of revolving credit facility borrowings	(5)	(967)
Net borrowings on commercial paper	88
Dividends paid	(42)	(36)
Repurchases of common stock	(84)	(84)
Employee taxes on certain share-based payment arrangements	(13)	(23)
Net cash provided by (used in) financing activities	329	69
Change in cash and cash equivalents	(47)	(189)
Cash and cash equivalents, beginning of period	75	240
Cash and cash equivalents, end of period	28	51
Supplemental Cash Flow Disclosure
Cash paid for income taxes	2
Cash paid for interest	1
Non-Cash Investing and Financing Activities
Capital expenditures accrued in accounts payable	$ 10	$ 34

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	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2018	$ 1,516	$ 1	$ 1,954	$ 2,609	$ (1,760)	$ (1,288)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	118			118
Dividends declared	(36)			(36)
Stock compensation	(18)		(18)
Other comprehensive income (loss), net of tax	19					19
Treasury stock activity	(36)				(36)
Balance at Mar. 31, 2019	1,563	1	1,936	2,691	(1,796)	(1,269)
Balance at Dec. 31, 2019	1,588	1	1,961	3,009	(1,974)	(1,409)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	172			172
Dividends declared	(42)			(42)
Stock compensation	(6)		(6)
Other comprehensive income (loss), net of tax	15					15
Treasury stock activity	(84)				(84)
Balance at Mar. 31, 2020	$ 1,643	$ 1	$ 1,955	$ 3,139	$ (2,058)	$ (1,394)

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Changes in Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Dividends declared per share	$ 1.03	$ 0.86

Description of Business

Description of Business	3 Months Ended
	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	DESCRIPTION OF BUSINESS Huntington Ingalls Industries, Inc. ("HII" or the "Company") is one of America’s largest military shipbuilding companies and a provider of professional services to partners in government and industry. HII is organized into three reportable segments: Ingalls Shipbuilding ("Ingalls"), Newport News Shipbuilding ("Newport News"), and Technical Solutions. 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. The Technical Solutions segment provides a range of services to the governmental, energy, and oil and gas markets. HII conducts most of its business with the U.S. Government, primarily the Department of Defense ("DoD"). As prime contractor, principal subcontractor, team member, or partner, the Company participates in many high-priority U.S. defense technology programs. Through its Ingalls segment, HII is a builder of amphibious assault and expeditionary ships for the U.S. Navy, the sole builder of National Security Cutters for the U.S. Coast Guard, and one of only two companies that builds the Navy's current fleet of Arleigh Burke class (DDG 51) destroyers. Through its Newport News segment, HII is the nation's sole designer, builder, and refueler of nuclear-powered aircraft carriers, and one of only two companies currently designing and building nuclear-powered submarines for the U.S. Navy. The Technical Solutions segment provides a wide range of professional services, including fleet support, mission driven innovative solutions ("MDIS"), nuclear and environmental, and oil and gas services.

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2020
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"). 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. Additionally, certain prior year amounts have been reclassified to conform to the current year presentation. 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, 2019. 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. The effects of this practice only exist for interim periods within a reporting year. Accounting Estimates - The preparation of the Company's 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. Additionally, while the Company cannot reasonably estimate the effects of the global outbreak of coronavirus disease 2019 (“COVID-19”) at this time, it is reasonably possible that COVID-19 could cause changes to estimates with respect to contract costs and revenue recognition, effective income tax rates, and the fair values of the Company’s long-lived assets, financial instruments, intangible assets, and goodwill recorded at our reporting units. There was no material impact included in the Company's estimates as of March 31, 2020, as a result of the COVID-19 pandemic. This position was supported by the assumption that the Company will recover COVID-19 related costs under its U.S. Government contracts based on government relief actions such as the Coronavirus Aid, Relief, and Economic Security Act (the "CARES Act") and U.S. Department of Defense ("DoD") guidance. There remains uncertainty regarding the process to recover COVID-19 related costs, which may result in reimbursement of less than the full costs incurred by the Company. As a result, the Company is not able to estimate any reasonably possible losses resulting from the impact of COVID-19. Government Grants - The Company recognizes incentive grants, inclusive of transfers of depreciable assets, from federal, state, and local governments at fair value upon compliance with the conditions of their receipt and reasonable assurance that the grants will be received or the depreciable assets will be transferred. Grants in recognition of specific expenses are recognized in the same period as an offset to those related expenses. Grants related to depreciable assets are recognized over the periods and in the proportions in which depreciation expense on those assets is recognized. For the three months ended March 31, 2020, the Company recognized cash grant benefits of approximately $5 million in other long-term liabilities in the unaudited condensed consolidated statements of financial position. For the three months ended March 31, 2019, the Company recognized cash grant benefits of approximately $36 million in other long-term liabilities in the unaudited condensed consolidated statements of financial position. Fair Value of Financial Instruments - Except for the Company's long-term debt, the carrying amounts of the Company's financial instruments 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 $137 million and $147 million as of March 31, 2020, and December 31, 2019, 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. Loan Receivable - The Company holds a loan receivable in connection with a seller financed transaction involving its previously owned Avondale shipyard facility. The receivable is carried at amortized cost in the amount of $40 million, net of a $8 million loan discount, which approximates fair value and is recorded in miscellaneous other assets on the unaudited condensed consolidated statements of financial position. Interest income is recognized on an accrual basis using the effective yield method. The discount is accreted into income using the effective yield method over the estimated life of the loan receivable.

Accounting Standards Updates

Accounting Standards Updates	3 Months Ended
	Mar. 31, 2020
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Accounting Standards Updates	ACCOUNTING STANDARDS UPDATESIn June 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Updated ("ASU") 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13), which changes the current incurred loss model a forward-looking expected credit loss model for most financial assets, such as trade and other receivables, loans and other instruments. The ASU is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years, with early adoption permitted. Entities are required to apply the provisions of the standard through a cumulative-effect adjustment to retained earnings as of the effective date. The Company adopted the provisions of ASU 2016-13 on January 1, 2020. The adoption did not result in a material impact to the Company’s financial results or disclosures.Accounting pronouncements issued but not effective until after December 31, 2020, are not expected to have a material impact on the Company's consolidated financial position, results of operations, or cash flows.

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2020
Acquisitions [Abstract]
Business Acquisition, Integration, Restructuring and Other Related Costs [Text Block]	ACQUISITIONSIn March 2020, the Company acquired Hydroid, Inc. ("Hydroid"), a leading provider of advanced marine robotics to the defense and maritime markets, for approximately $378 million in cash, net of $2 million of acquired cash. The acquisition expands the Company's capabilities in the strategically important and rapidly growing autonomous and unmanned maritime systems market. In connection with this acquisition, the Company preliminarily recorded $310 million of goodwill and intangible assets, all of which was allocated to the Company's Technical Solutions segment. The Company has not completed the purchase price allocation, because the fair value calculations for certain assets and liabilities have not been finalized. See Note 11: Goodwill and Other Intangible Assets. The assets, liabilities, and results of operations of Hydroid are not material to the Company’s consolidated financial position, results of operations, or cash flows. In February 2019, the Company acquired Fulcrum IT Services, LLC ("Fulcrum"), an information technology and government consulting company, for approximately $195 million in cash, net of $1 million of acquired cash. The acquisition was consistent with the Company's strategy to optimize and expand its services portfolio. In connection with this acquisition, the Company recorded $133 million of goodwill, which includes the value of Fulcrum's workforce, all of which was allocated to its Technical Solutions segment, as well as $49 million of intangible assets related to existing contract backlog. For the year ended December 31, 2019, the Company recorded a decrease in goodwill of $1 million, primarily driven by the finalization of a net working capital adjustment and the fair value calculations for certain assets and liabilities. See Note 11: Goodwill and Other Intangible Assets. The assets, liabilities, and results of operations of Fulcrum are not material to the Company’s consolidated financial position, results of operations, or cash flows. In December 2018, the Company acquired G2, Inc. ("G2"), a provider of cybersecurity solutions to the U.S. Government, for approximately $77 million in cash, net of $2 million of acquired cash. The acquisition was consistent with the Company's strategy to optimize and expand its services portfolio. In connection with this acquisition, the Company recorded $46 million of goodwill, which includes the value of G2's workforce, all of which was allocated to its Technical Solutions segment, as well as $20 million of intangible assets related to existing contract backlog. For the year ended December 31, 2019, the Company recorded an increase in goodwill of $7 million, primarily driven by the finalization of a net working capital adjustment and the fair value calculations for certain assets and liabilities. See Note 11: Goodwill and Other Intangible Assets. The assets, liabilities, and results of operations of G2 are not material to the Company’s consolidated financial position, results of operations, or cash flows. The Company funded each of these acquisitions using cash on hand, issuance of commercial paper, or borrowings on its revolving credit facility. The acquisition costs incurred in connection with these acquisitions were not material. The operating results of these businesses have been included in the Company’s consolidated results as of the respective closing dates of the acquisitions. In allocating the purchase prices of these businesses, the Company considered the estimated fair value of net tangible and intangible assets acquired, with any excess purchase price recorded as goodwill. The total amount of goodwill resulting from these acquisitions is expected to be amortizable for tax purposes. These acquisitions are not material either individually or in the aggregate, and pro forma revenues and results of operations have therefore not been provided.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2020
Stockholders' Equity Note [Abstract]
Stockholders' Equity [Text Block]	STOCKHOLDERS' EQUITY Treasury Stock - In November 2019, the Company's board of directors authorized an increase in the Company's stock repurchase program from $2.2 billion to $3.2 billion and an extension of the term of the program to October 31, 2024. 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, 2020, the Company repurchased 390,904 shares at an aggregate cost of $84 million. For the three months ended March 31, 2019, the Company repurchased 183,885 shares at an aggregate cost of $36 million. For the three months ended March 31, 2019, the Company also settled for cash $48 million of shares repurchased in the prior year. The cost of purchased shares is recorded as treasury stock in the unaudited condensed consolidated statements of financial position. Dividends - The Company declared cash dividends per share of $1.03 and $0.86 for the three months ended March 31, 2020 and 2019, respectively. The Company paid cash dividends totaling $42 million and $36 million for the three months ended March 31, 2020 and 2019, 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 as of March 31, 2020, was comprised of unamortized benefit plan costs of $1,390 million and other comprehensive loss items of $4 million. The accumulated other comprehensive loss as of December 31, 2019, was comprised of unamortized benefit plan costs of $1,407 million and other comprehensive loss items of $2 million. The changes in accumulated other comprehensive income (loss) by component for the three months ended March 31, 2020 and 2019, were as follows: ($ in millions) Benefit Plans Other Total Balance as of December 31, 2018 $ (1,283) $ (5) $ (1,288) Amounts reclassified from accumulated other comprehensive loss Amortization of net actuarial loss 1 25 — 25 Tax expense for items of other comprehensive income (6) — (6) Net current period other comprehensive income 19 — 19 Balance as of March 31, 2019 $ (1,264) $ (5) $ (1,269) Balance as of December 31, 2019 (1,407) (2) (1,409) Other comprehensive income (loss) before reclassifications — (2) (2) Amounts reclassified from accumulated other comprehensive loss Amortization of prior service credit 1 (2) — (2) Amortization of net actuarial loss 1 25 — 25 Tax expense for items of other comprehensive income (6) — (6) Net current period other comprehensive income (loss) 17 (2) 15 Balance as of March 31, 2020 $ (1,390) $ (4) $ (1,394) 1 These accumulated comprehensive loss components are included in the computation of net periodic benefit cost. See Note 17: Employee Pension and Other Postretirement Benefits. The tax benefit associated with amounts reclassified from accumulated other comprehensive loss for each of the three months ended March 31, 2020 and 2019, was $6 million.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2020
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) 2020 2019 Net earnings $ 172 $ 118 Weighted-average common shares outstanding 40.7 41.4 Net dilutive effect of stock awards — — Dilutive weighted-average common shares outstanding 40.7 41.4 Earnings per share - basic $ 4.23 $ 2.85 Earnings per share - diluted $ 4.23 $ 2.85 Under the treasury stock method, the Company has excluded from the diluted share amounts presented above the effects of 0.3 million Restricted Performance Stock Rights ("RPSRs") for the three months ended March 31, 2020 and 2019.

Revenue

Revenue	3 Months Ended
	Mar. 31, 2020
Disaggregation of Revenue [Abstract]
Revenue from Contract with Customer	REVENUEThe following is a description of principal activities from which the Company generates its revenues. For more detailed information regarding reportable segments, see Note 8: Segment Information. For more detailed information regarding the Company's significant accounting policy for revenue, see Note 2: Basis of Presentation. U.S. Government Contracts The Ingalls and Newport News segments generate revenue primarily from performance under multi-year contracts with the U.S. Government, generally the U.S. Navy and U.S. Coast Guard, or prime contractors to contracts with the U.S. Government, relating to the advance planning, design, construction, repair, maintenance, refueling, overhaul, or inactivation of nuclear-powered ships and non-nuclear ships. The period over which the Company performs may extend past five years. The Technical Solutions segment also generates the majority of its revenue from contracts with the U.S. Government, including U.S. Government agencies. The Company generally invoices and receives related payments based upon performance progress no less frequently than monthly. Shipbuilding - For most of the Company's shipbuilding contracts, the customer contracts with the Company to provide a comprehensive service of designing, procuring long-lead-time materials, manufacturing, and integrating complex equipment and technologies into a single ship or project, often resulting in a single performance obligation. Contract modifications to account for changes in specifications and requirements are recognized when approved by the customer. In the majority of circumstances, modifications do not result in additional performance obligations that are distinct from the existing performance obligations in the contract and the effects of the modifications are recognized as an adjustment to revenue on a cumulative catch-up basis. Alternatively, in instances where the performance obligations in the modifications are deemed distinct, contract modifications are accounted for prospectively. The Company considers incentive and award fees to be variable consideration and includes in the transaction price at inception the consideration to which the Company expects to be entitled under the terms and conditions of the contract, generally estimated using a most likely amount approach. Transaction price is limited to the extent of funding allotted by the customer and available for performance, and estimated revenues represent those amounts for which the Company believes a significant reversal of revenue is not probable. The Company recognizes revenues related to shipbuilding contracts as it satisfies the related performance obligations over time using a cost-to-cost input method to measure performance progress, which best reflects the transfer of control to the customer. Services - The Technical Solutions segment generates revenue primarily under U.S. Government contracts from the provision of fleet support and MDIS services. Contracts generally are structured using either an Indefinite Delivery/Indefinite Quantity ("IDIQ") vehicle, under which orders are issued, or a standalone contract. Contracts may be fixed-price or cost-type, include variable consideration such as incentives and awards, and structured as task orders under an IDIQ contract vehicle or requirements contract vehicle. In either case, the Company generally performs over the course of a short-duration period and may continue to perform upon exercise of related period of performance options that are also short in duration, generally one year. The Company’s performance obligations vary in nature and may be stand-ready, in which case the Company responds to the customer’s needs on the basis of its demand, a recurring service, typically recurring maintenance services, or a single performance obligation that does not comprise a series of distinct services. In determining transaction price, the Company considers incentives and other contingencies to be variable consideration and includes in the initial transaction price the consideration to which the Company expects to be entitled under the terms and conditions of the contract, generally estimated using a most likely amount approach. Transaction price is limited to the extent of funding allotted by the customer and available for performance, and estimated revenues represent those amounts for which the Company believes a significant reversal of revenue is not probable. Where a series of distinct services has been identified, the Company generally allocates variable consideration to distinct time increments of service. The Company generally recognizes revenue as it satisfies the related performance obligations over time using a cost-to-cost input method to measure performance progress, because, even where the Company has identified a series of services, its cost incurrence pattern generally is not ratable given the complex nature of the services the Company provides. Invoices are issued and related payments are received, on the basis of performance progress, no less frequently than monthly. In addition, many of the Company's U.S. Government services contracts are time and material arrangements. As a result, the Company often utilizes the practical expedient allowing the recognition of revenue in the amount the Company invoices, which corresponds with the value provided to the customer and to which the Company is entitled to payment for performance to date. Non-U.S. Government Contracts Revenues generated under commercial and state and local government agency contracts are primarily derived from the provision of nuclear and environmental and oil and gas services. Non-U.S. Government contracts typically are one or two years in duration. In determining transaction price, the Company considers incentives and other contingencies to be variable consideration and includes in the initial transaction price the consideration to which the Company expects to be entitled under the terms and conditions of the contract, generally estimated using a most likely amount approach. In the context of variable consideration, the Company limits the transaction price to amounts for which the Company believes a significant reversal of revenue is not probable. Such amounts may relate to transaction price in excess of funding, a lack of history with the customer, a lack of history with the goods or services being provided, or other items. Revenue generally is recognized over time given the terms and conditions of the related contracts. The Company generally utilizes a cost-to-cost input method to measure performance progress, which best depicts the transfer of control to the customer. The Company’s non-U.S. Government contract portfolio is comprised of a large number of time and material arrangements. As a result, the Company often utilizes the practical expedient allowing the recognition of revenue in the amount the Company invoices, which corresponds with the value provided to the customer and to which the Company is entitled to payment for performance to date. 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. Certain prior year amounts have been reclassified. See Note 8: Segment Information. 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. Three Months Ended March 31, 2020 ($ in millions) Ingalls Newport News Technical Solutions Intersegment Eliminations Total Revenue Type Product sales $ 578 $ 1,046 $ — $ — $ 1,624 Service revenues 50 293 296 — 639 Intersegment 1 2 21 (24) — Sales and service revenues $ 629 $ 1,341 $ 317 $ (24) $ 2,263 Customer Type Federal $ 628 $ 1,339 $ 228 $ — $ 2,195 Commercial — — 68 — 68 Intersegment 1 2 21 (24) — Sales and service revenues $ 629 $ 1,341 $ 317 $ (24) $ 2,263 Contract Type Firm fixed-price $ 15 $ 2 $ 59 $ — $ 76 Fixed-price incentive 523 638 — — 1,161 Cost-type 90 699 133 — 922 Time and materials — — 104 — 104 Intersegment 1 2 21 (24) — Sales and service revenues $ 629 $ 1,341 $ 317 $ (24) $ 2,263 Three Months Ended March 31, 2019 ($ in millions) Ingalls Newport News Technical Solutions Intersegment Eliminations Total Revenue Type Product sales $ 538 $ 952 $ — $ — $ 1,490 Service revenues 46 327 217 — 590 Intersegment — — 23 (23) — Sales and service revenues $ 584 $ 1,279 $ 240 $ (23) $ 2,080 Customer Type Federal $ 584 $ 1,265 $ 165 $ — $ 2,014 Commercial — 14 52 — 66 Intersegment — — 23 (23) — Sales and service revenues $ 584 $ 1,279 $ 240 $ (23) $ 2,080 Contract Type Firm fixed-price $ 17 $ 3 $ 35 $ — $ 55 Fixed-price incentive 478 453 — — 931 Cost-type 89 823 99 — 1,011 Time and materials — — 83 — 83 Intersegment — — 23 (23) — Sales and service revenues $ 584 $ 1,279 $ 240 $ (23) $ 2,080 Three Months Ended Three Months Ended ($ in millions) 2020 2019 Major Programs Amphibious assault ships $ 347 $ 297 Surface combatants and coast guard cutters 279 286 Other 3 1 Total Ingalls 629 584 Aircraft carriers 698 713 Submarines 455 368 Other 188 198 Total Newport News 1,341 1,279 Government and energy services 253 191 Oil and gas services 64 49 Total Technical Solutions 317 240 Intersegment eliminations (24) (23) Sales and service revenues $ 2,263 $ 2,080 As of March 31, 2020, the Company had $45.2 billion of remaining performance obligations. The Company expects to recognize approximately 30% of its remaining performance obligations as revenue through 2021, an additional 25% through 2023, and the balance thereafter. Cumulative Catch-up Adjustments For the three months ended March 31, 2020, net cumulative catch-up adjustments increased operating income and increased diluted earnings per share by $32 million and $0.62, respectively. For the three months ended March 31, 2019, net cumulative catch-up adjustments decreased operating income and decreased diluted earnings per share by $6 million and $0.11, respectively. No individual adjustment was material to the Company's unaudited condensed consolidated statements of operations and comprehensive income for the three months ended March 31, 2020 and 2019. Contract Balances Contract balances include accounts receivable, contract assets, and contract liabilities from contracts with customers. Accounts receivable represent an unconditional right to consideration and include amounts billed and currently due from customers. Contract assets primarily relate to the Company's rights to consideration for work completed but not billed as of the reporting date when the right to payment is not just subject to the passage of time. Fixed-price contracts are generally billed to the customer using either progress payments, whereby amounts are billed monthly as costs are incurred or work is completed, or performance based payments, which are based upon the achievement of specific, measurable events or accomplishments defined and valued at contract inception. Cost-type contracts are typically billed to the customer on a monthly or semi-monthly basis. Contract liabilities relate to advance payments, billings in excess of revenues, and deferred revenue amounts. 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. The Company’s net contract assets increased $208 million from December 31, 2019, to March 31, 2020, primarily due to an increase in contract assets as a result of revenue on certain U.S. Navy contracts and the acquisition of Hydroid. For the three months ended March 31, 2020, the Company recognized revenue of $274 million related to its contract liabilities as of December 31, 2019. For the three months ended March 31, 2019, the Company recognized revenue of $217 million related to its contract liabilities as of December 31, 2018.

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Segment Information	SEGMENT INFORMATION The Company is organized into three reportable segments: Ingalls, Newport News, and Technical Solutions, consistent with how management makes operating decisions and assesses performance. In January 2020, the Company realigned its segments to optimize its operating structure. As a result of this realignment, the Company's HII Mechanical business was transferred from the Technical Solutions segment to the Newport News segment to better align HII Mechanical's work primarily supporting Newport News. The Company has reflected the 2020 realignment in prior financial reporting periods on an as-if basis, which has resulted in the transfer of revenue, operating income, assets, and liabilities between the Technical Solutions and Newport News segments. This realignment did not impact the Company's previously reported consolidated financial position, results of operations, or cash flows. See Note 7: Revenue. The following table presents segment results for the three months ended March 31, 2020 and 2019: Three Months Ended ($ in millions) 2020 2019 Sales and Service Revenues Ingalls $ 629 $ 584 Newport News 1,341 1,279 Technical Solutions 317 240 Intersegment eliminations (24) (23) Sales and service revenues $ 2,263 $ 2,080 Operating Income Ingalls $ 68 $ 46 Newport News 95 81 Technical Solutions (7) 2 Segment operating income 156 129 Non-segment factors affecting operating income (loss) Operating FAS/CAS Adjustment 63 34 Non-current state income taxes (4) (2) Operating income $ 215 $ 161 Operating FAS/CAS Adjustment - The Operating FAS/CAS Adjustment represents the difference between the service cost component of our pension and other postretirement expense determined in accordance with GAAP ("FAS") and our pension and other postretirement expense under CAS. The following table presents the Company's assets by segment: ($ in millions) March 31, 2020 December 31, 2019 Assets Ingalls $ 1,704 $ 1,618 Newport News 4,038 3,886 Technical Solutions 1,472 1,022 Corporate 401 505 Total assets $ 7,615 $ 7,031

Inventoried Costs, Net

Inventoried Costs, Net	3 Months Ended
	Mar. 31, 2020
Inventory Disclosure [Abstract]
Inventoried Costs, Net	INVENTORIED COSTS, NET Inventoried costs were comprised of the following: ($ in millions) March 31, 2020 December 31, 2019 Production costs of contracts in process 1 $ 37 $ 30 Raw material inventory 117 106 Total inventoried costs, net $ 154 $ 136 1 Includes amounts capitalized pursuant to applicable provisions of the FAR and CAS.

Assets and Liabilities Held for

Assets and Liabilities Held for Sale	3 Months Ended
	Mar. 31, 2020
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations, Disclosure	ASSETS AND LIABILITIES HELD FOR SALEAs of March 31, 2020, the Company determined that two asset groups within its Technical Solutions segment met the criteria to be classified as held for sale. It is the Company's intention to complete the sale of these assets within 12 months following the initial classification as assets held for sale. As a result, during the fourth quarter of 2019, the Company recorded an impairment charge of $6 million within other, net in the consolidated statements of operations and comprehensive income. The following table summarizes the assets and liabilities classified as held for sale: March 31, 2020 December 31, 2019 ($ in millions) Current assets $ 94 $ 74 Property, plant, and equipment 16 2 Other intangible assets, net 2 2 Goodwill 35 — Other non-current assets 37 23 Valuation allowance (6) (6) Total assets held for sale $ 178 $ 95 Current liabilities 65 62 Long-term liabilities 27 15 Total liabilities held for sale $ 92 $ 77

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill HII performs impairment tests for goodwill as of November 30 of each year and between annual impairment tests if an event occurs or circumstances change that would more likely than not reduce the fair values of the Company's reporting units below their carrying values. Accumulated goodwill impairment losses as of each of March 31, 2020, and December 31, 2019, were $2,906 million. The accumulated goodwill impairment losses for Ingalls as of each of March 31, 2020, and December 31, 2019, were $1,568 million. The accumulated goodwill impairment losses for Newport News as of each of March 31, 2020, and December 31, 2019, were $1,187 million. The accumulated goodwill impairment losses for Technical Solutions as of each of March 31, 2020, and December 31, 2019, were $151 million. For the three months ended March 31, 2020, the carrying amounts of goodwill changed as follows: ($ in millions) Ingalls Newport News Technical Solutions Total Balance as of December 31, 2019 $ 175 $ 721 $ 477 $ 1,373 Acquisitions — — 310 310 Adjustments — — (35) (35) Balance as of March 31, 2020 $ 175 $ 721 $ 752 $ 1,648 As of March 31, 2020, the Company allocated $35 million of goodwill at its Technical Solutions segment to an asset group that was classified as held for sale. Other Intangible Assets The Company's purchased intangible assets are amortized on a straight-line basis or a method based on the pattern of benefits over their estimated useful lives. Net intangible assets consist principally of amounts pertaining to nuclear-powered aircraft carrier and submarine program intangible assets, with an aggregate weighted-average useful life of 40 years based on the long life cycle of the related programs. Aggregate amortization expense was $11 million for the three months ended March 31, 2020 and 2019. In connection with the Fulcrum purchase in 2019, the Company recorded $49 million of intangible assets pertaining to existing contract backlog and customer relationships, to be amortized using the pattern of benefits method over a weighted-average life of seven years.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2020
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, 2020 and 2019, were 20.4% and 20.8%, respectively, which did not differ materially from the federal statutory corporate income tax rate of 21%. On March 27, 2020, the CARES Act was signed into law. The CARES Act includes certain changes to U.S. federal tax law that impact corporations. The Company’s initial analysis of the tax law changes included in the CARES Act indicates that the Act will not have a material impact on the Company’s effective income tax rate. The Company's unrecognized tax benefits increased by $2 million during the three months ended March 31, 2020. As of March 31, 2020, the estimated amounts of the Company's unrecognized tax benefits, excluding interest and penalties, were liabilities of $38 million. Assuming a sustainment of these tax positions, the reversal of $30 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, 2020, interest resulting from the unrecognized tax benefits noted above increased income tax expense less than $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 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.

Debt

Debt	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Debt	DEBT Long-term debt consisted of the following: ($ in millions) March 31, 2020 December 31, 2019 Senior notes due November 15, 2025, 5.000% 600 600 Senior notes due December 1, 2027, 3.483% 600 600 Mississippi economic development revenue bonds due May 1, 2024, 7.81% 84 84 Gulf opportunity zone industrial development revenue bonds due December 1, 2028, 4.55% 21 21 Revolving credit facility borrowings 380 — Less unamortized debt issuance costs (18) (19) Total long-term debt $ 1,667 $ 1,286 Credit Facility - The Company's credit facility with third-party lenders (the "Credit Facility") includes a revolving credit facility of $1,250 million, which may be drawn upon during a period of five years from November 22, 2017. The revolving credit facility includes a letter of credit subfacility of $500 million. The Credit Facility contains customary affirmative and negative covenants, as well as a financial covenant based on a maximum total leverage ratio. Each of the Company's existing and future material wholly owned domestic subsidiaries, except those that are specifically designated as unrestricted subsidiaries, are and will be guarantors under the Credit Facility. See Note 19: Subsidiary Guarantors. As of March 31, 2020, the Company had $380 million of outstanding borrowings, $16 million in issued but undrawn letters of credit, and $854 million unutilized under the Credit Facility. The Company had unamortized debt issuance costs associated with its credit facilities of $6 million and $7 million as of March 31, 2020, and December 31, 2019, respectively. In the second quarter of 2020, the Company entered into a new 364-day revolving credit agreement (the "364-Day Facility") with third-party lenders. The 364-Day Facility includes a revolving credit facility of $500 million, which may be drawn upon during a period of 364 days from April 3, 2020. The revolving credit facility has a variable interest rate on outstanding borrowings based on the London Interbank Offered Rate ("LIBOR") plus a spread based upon the Company's credit rating, which may vary between 2.000% and 2.375%. The revolving credit facility also has a commitment fee rate of 0.50%. The 364-Day Facility contains customary affirmative and negative covenants, as well as a financial covenant based on a maximum total leverage ratio. Each of the Company's existing and future material wholly owned domestic subsidiaries, except those that are specifically designated as unrestricted subsidiaries, are and will be guarantors under the 364-Day Facility. In October 2019, the Company established an unsecured commercial paper note program, under which the Company may issue up to $1 billion of unsecured commercial paper notes. As of March 31, 2020, the Company had $88 million of outstanding commercial paper. Senior Notes - In the second quarter of 2020, the Company issued $500 million aggregate principal amount of unregistered 3.844% senior notes due 2025 and $500 million aggregate principal amount of unregistered 4.200% senior notes due 2030, both with registration rights. The net proceeds are intended to be used for general corporate purposes, which may include debt repayments and working capital. Interest on these senior notes is payable semiannually. The terms of the senior notes limit the Company’s ability and the ability of certain of its subsidiaries to create liens, enter into sale and leaseback transactions, sell assets, and effect consolidations or mergers. The Company had unamortized debt issuance costs associated with its senior notes of $12 million as of each of March 31, 2020, and December 31, 2019. The Company's debt arrangements contain customary affirmative and negative covenants. The Company was in compliance with all debt covenants during the three months ended March 31, 2020. The estimated fair values of the Company's total long-term debt as of March 31, 2020, and December 31, 2019, were $1,687 million and $1,379 million, 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 under the fair value hierarchy.

Investigations, Claims, and Lit

Investigations, Claims, and Litigation	3 Months Ended
	Mar. 31, 2020
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 FASB 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. For matters where a material loss is probable or reasonably possible and the amount of loss cannot be reasonably estimated, but the Company is able to reasonably estimate a range of possible losses, the Company will disclose such estimated range in these notes. This estimated range is based on information currently available to the Company and involves elements of judgment and significant uncertainties. Any estimated range of possible loss does not represent the Company's maximum possible loss exposure. For matters as to which the Company is not able to reasonably estimate a possible loss or range of loss, the Company will indicate the reasons why it is unable to estimate the possible loss or range of loss. For matters not specifically described in these notes, the Company does not believe, based on information currently available to it, that it is reasonably possible that the liabilities, if any, arising from such investigations, claims, and litigation will have a material effect on its consolidated financial position, results of operations, or cash flows. The Company has, in certain cases, provided disclosure regarding certain matters for which the Company believes at this time that the likelihood of material loss is remote. False Claims Act Complaint - In 2016, the Company was made aware that it is a defendant in a qui tam False Claims Act lawsuit pending in the U.S. District Court for the Middle District of Florida related to the Company’s purchases of allegedly non-conforming parts from a supplier for use in connection with U.S. Government contracts. In August 2019, the Department of Justice (“DoJ”) declined to intervene in the lawsuit, and the lawsuit was unsealed. Depending on the outcome of the lawsuit, the Company could be subject to civil penalties, damages, and/or suspension or debarment from future U.S. Government contracts, which could have a material adverse effect on its consolidated financial position, results of operations, or cash flows. The Company recently filed a motion to dismiss the complaint and has not had an opportunity to engage in any discovery related to the issues set forth in the complaint. At this early stage, the Company currently is unable to estimate an amount or range of reasonably possible loss or to express an opinion regarding the ultimate outcome. 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. The cases allege various injuries, including those associated with pleural plaque disease, asbestosis, cancer, mesothelioma, and other alleged asbestos related conditions. In some cases, several of HII's former executive officers are also named as defendants. In some instances, partial or full insurance coverage is available to the Company for its liability and that of its former executive officers. The costs to resolve cases during the three months ended March 31, 2020 and 2019, were immaterial individually and in the aggregate. The Company’s estimate of asbestos-related liabilities is subject to uncertainty because liabilities are influenced by numerous variables that are inherently difficult to predict. Key variables include the number and type of new claims, the litigation process from jurisdiction to jurisdiction and from case to case, reforms made by state and federal courts, and the passage of state or federal tort reform legislation. Although the Company believes the ultimate resolution of current cases will not have a material effect on its 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. Other Litigation - In March 2019, a new dry dock being transported for delivery to Ingalls by a heavy lift ship struck an Ingalls work barge, which in turn was pushed into Delbert D. Black (DDG 119) causing damage to Delbert D. Black (DDG 119), the work barge, and the new dry dock. At the time of the incident, responsibility for the new dry dock remained with the builder and the transport company. Repair work on Delbert D. Black (DDG 119) was completed at U.S. Navy direction. The Company is working with the U.S. Navy to ascertain whether third parties will pay for the repairs to Delbert D. Black (DDG 119) or whether the repairs will be paid under the builder's risk insurance included in the Delbert D. Black (DDG 119) contract. Claims were tendered to the Company's insurers, and the Company has received all outstanding claim proceeds. In April 2019, the Company filed suit in the U.S. District Court for the Southern District of Mississippi seeking, among other relief, damages from negligent third parties. Based on information currently available, management believes it will collect sufficient funds from one or more third parties to compensate for the resulting direct and consequential damages, but failure to collect sufficient funds or the length of time required to collect such funds could result in a material effect on the Company’s financial position, results of operations, or cash flows. The Company and its predecessor-in-interest have been in litigation with the Bolivarian Republic of Venezuela (the "Republic") since 2002 over a contract for the repair, refurbishment, and modernization at Ingalls of two foreign-built frigates. The case proceeded towards arbitration, then appeared to settle favorably, but the settlement was overturned in court and the matter returned to litigation. In March 2014, the Company filed an arbitral statement of claim asserting breaches of the contract. In July 2014, the Republic filed a statement of defense in the arbitration denying all the Company’s allegations and a counterclaim alleging late redelivery of the frigates, unfinished work, and breach of warranty. In February 2018, the arbitral tribunal awarded the Company approximately $151 million on its claims and awarded the Republic approximately $22 million on its counterclaims. The Company is seeking to enforce and execute upon the award in multiple jurisdictions. No assurances can be provided regarding the ultimate resolution of this matter.

Leases

Leases	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Leases of Lessee Disclosure [Text Block]	LEASES The Company leases certain land, warehouses, office space, and production, office, and technology equipment, among other items. Most equipment is leased on a monthly basis. Many land, warehouse, and office space leases include renewal terms that can extend the lease term. The exercise of lease renewal options is at the Company's sole discretion. The depreciable life of assets and leasehold improvements are generally limited by the expected lease term. The Company's lease agreements do not generally contain material residual value guarantees, material restrictive covenants, or purchase options. The Company's lease portfolio consists primarily of operating leases. Amounts after January 1, 2019, are reported under Topic 842 in accordance with ASU 2016-02. Lease costs and related information were as follows: Three Months Ended ($ in millions) 2020 2019 Operating lease costs $ 16 $ 11 Short-term operating lease costs $ 4 $ 5 Variable operating lease costs $ 1 $ 1 Operating cash flows from operating leases $ (16) $ (11) Right-of-use assets obtained in exchange for new operating lease liabilities $ 17 $ 13 Weighted-average remaining lease term (years) - operating leases 10 years 11 years Weighted-average discount rate - operating leases 4.1 % 4.5 % The undiscounted future non-cancellable lease payments under our operating leases were as follows: Year: March 31, 2020 December 31, 2019 2020 $ 34 $ 45 2021 39 38 2022 31 30 2023 25 24 2024 23 22 Thereafter 121 114 Total lease payments 273 273 Less: imputed interest 57 58 Present value of lease liabilities $ 216 $ 215 Lease liabilities included in the Company's consolidated balance sheet as of March 31, 2020, were as follows: ($ in millions) March 31, 2020 December 31, 2019 Short-term operating lease liabilities $ 34 $ 35 Lease liabilities included in liabilities held for sale 29 16 Long-term operating lease liabilities 153 164 Total operating lease liabilities $ 216 $ 215

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2020
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 are included in contract profit margins to the extent of expected recovery based upon contractual entitlements and the probability of successful negotiation with the customer. As of March 31, 2020, amounts recognized in connection with claims and requests for equitable adjustment were not material individually or in aggregate. Guarantees of Performance Obligations - From time to time in the ordinary course of business, HII may enter into joint ventures, teaming, and other business arrangements to support the Company's products and services. The Company attempts to limit its exposure under these arrangements to its investment or the extent of obligations under the applicable contract. In some cases, however, HII may be required to guarantee performance of the arrangement's obligations and, in such cases, generally obtains cross-indemnification from the other members of the arrangement. In the ordinary course of business, the Company may guarantee obligations of its subsidiaries under certain contracts. Generally, the Company is liable under such an arrangement only if its subsidiary is unable to perform its obligations. Historically, the Company has not incurred any substantial liabilities resulting from these guarantees. As of March 31, 2020, the Company was not aware of any existing event of default that would require it to satisfy any of these guarantees. Environmental Matters - The estimated cost to complete environmental remediation has been 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 ("PRP") 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. To assess the potential impact on the Company's consolidated financial statements, management estimates the range of reasonably possible remediation costs that could be incurred by the Company, taking into account currently available facts on each site, as well as the current state of technology and prior experience remediating contaminated sites. These estimates are reviewed periodically and adjusted to reflect changes in facts and technical and legal circumstances. Management estimated that as of March 31, 2020, the probable estimable future cost for environmental remediation was immaterial. Factors that could result in changes to the Company's estimates include: modification of planned remedial actions, increases or decreases in the estimated time required to remediate, changes to the determination of legally responsible parties, discovery of more extensive contamination than anticipated, changes in laws and regulations affecting remediation requirements, and improvements in remediation technology. Should other PRPs not pay their allocable share of remediation costs, the Company may incur costs exceeding those already estimated and accrued. In addition, there are certain potential remediation sites where the costs of remediation cannot be reasonably estimated. Although management cannot predict whether new information gained as remediation progresses 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, 2020, the Company had $16 million in issued but undrawn letters of credit, as indicated in Note 13: Debt, and $272 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 HII 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. Collective Bargaining Agreements - Of the Company's approximately 42,000 employees, approximately 50% are covered by a total of nine collective bargaining agreements and two site stabilization agreements. Newport News has four collective bargaining agreements covering represented employees, which expire in November 2020, November 2021, December 2022, and April 2024. The collective bargaining agreement that expires in November 2021 covers approximately 50% of Newport News employees. Newport News craft workers employed at the Kesselring Site near Saratoga Springs, New York are represented under an indefinite Department of Energy ("DoE") site agreement. Ingalls has five collective bargaining agreements covering represented employees, all of which expire in March 2022. Approximately 50 Technical Solutions employees at various locations are represented by unions and perform work under collective bargaining agreements. The Company believes its relationship with its employees is satisfactory. Collective bargaining agreements generally expire after three years to five years and are subject to renegotiation at that time. The Company does not expect the results of these negotiations, either individually or in the aggregate, to have a material effect on the Company's consolidated results of operations.

Employee Pension And Other Post

Employee Pension And Other Postretirement Benefits	3 Months Ended
	Mar. 31, 2020
Retirement Benefits [Abstract]
Employee Pension and Other Postretirement Benefits	EMPLOYEE PENSION AND OTHER POSTRETIREMENT BENEFITS The Company provides eligible employees defined benefit pension plans, postretirement benefit plans, and defined contribution pension plans. The costs of the Company's defined benefit pension plans and other postretirement benefit plans for the three months ended March 31, 2020 and 2019, were as follows: Three Months Ended Pension Benefits Other Benefits ($ in millions) 2020 2019 2020 2019 Components of Net Periodic Benefit Cost Service cost $ 45 $ 36 $ 2 $ 2 Interest cost 64 69 4 5 Expected return on plan assets (121) (102) — — Amortization of prior service cost (credit) 3 5 (5) (5) Amortization of net actuarial loss (gain) 27 28 (2) (3) Net periodic benefit cost $ 18 $ 36 $ (1) $ (1) The Company made the following contributions to its defined benefit pension plans and other postretirement benefit plans for the three months ended March 31, 2020 and 2019: Three Months Ended ($ in millions) 2020 2019 Pension plans Qualified minimum $ — $ — Discretionary Qualified 20 1 Non-qualified 2 2 Other benefit plans 8 7 Total contributions $ 30 $ 10 For the year ending December 31, 2020, the Company expects cash contributions to its qualified defined benefit pension plans to be $205 million, all of which will be discretionary.

Stock Compensation Plans

Stock Compensation Plans	3 Months Ended
	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
Stock Compensation Plans	STOCK COMPENSATION PLANS During the three months ended March 31, 2020 and 2019, the Company issued new stock awards as follows: Restricted Performance Stock Rights - For the three months ended March 31, 2020, the Company granted approximately 0.1 million RPSRs at a weighted average share price of $229.42. These rights are subject to cliff vesting on December 31, 2022. For the three months ended March 31, 2019, the Company granted approximately 0.1 million RPSRs at a weighted average share price of $210.24. These rights are subject to cliff vesting on December 31, 2021. 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. For the three months ended March 31, 2020 and 2019, 0.1 million and 0.3 million of stock awards vested, respectively, of which approximately 0.1 million each year were transferred to the Company from employees in satisfaction of minimum tax withholding obligations. The following table summarizes the status of the Company's outstanding stock awards as of March 31, 2020: Stock Awards Weighted-Average Weighted-Average Remaining Contractual Term Total stock awards 391 $ 205.78 1.5 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 for the three months ended March 31, 2020 and 2019, of $7 million and $5 million, respectively. The Company recorded tax benefits related to stock awards of $1 million for the three months ended March 31, 2020 and 2019. The Company recognized tax benefits associated with the issuance of stock in settlement of stock awards for the three months ended March 31, 2020 and 2019, of $2 million and $5 million, respectively. Unrecognized Compensation Expense As of March 31, 2020, the Company had less than $1 million of unrecognized compensation expense associated with Restricted Stock Rights granted in 2019 and 2018, which will be recognized over a weighted average period of 1.2 years, and $48 million of unrecognized compensation expense associated with RPSRs granted in 2020, 2019, and 2018, which will be recognized over a weighted average period of 1.8 years.

Subsidiary Guarantors

Subsidiary Guarantors	3 Months Ended
	Mar. 31, 2020
Subsidiary Guarantors [Abstract]
Subsidiary Guarantors	SUBSIDIARY GUARANTORSAs described in Note 13: Debt, the Company issued senior notes through the consolidating parent company, HII.  Performance of the Company's obligations under its senior notes outstanding as of March 31, 2020, and December 31, 2019, including any repurchase obligations resulting from a change of control, is fully and unconditionally guaranteed, jointly and severally, on an unsecured basis, by each of HII's existing and future material domestic subsidiaries ("Subsidiary Guarantors"). The Subsidiary Guarantors are 100% owned by HII. Under SEC Regulation S-X Rule 3-10, each HII subsidiary that did not provide a guarantee ("Non-Guarantors") is minor and HII, as the parent company issuer, did not have independent assets or operations. There are no significant restrictions on the ability of the parent company and the Subsidiary Guarantors to obtain funds from their respective subsidiaries by dividend or loan, except those imposed by applicable law.

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2020
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"). 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. Additionally, certain prior year amounts have been reclassified to conform to the current year presentation. 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, 2019.
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. The effects of this practice only exist for interim periods within a reporting year.
Accounting Estimates	Accounting Estimates - The preparation of the Company's 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. Additionally, while the Company cannot reasonably estimate the effects of the global outbreak of coronavirus disease 2019 (“COVID-19”) at this time, it is reasonably possible that COVID-19 could cause changes to estimates with respect to contract costs and revenue recognition, effective income tax rates, and the fair values of the Company’s long-lived assets, financial instruments, intangible assets, and goodwill recorded at our reporting units. There was no material impact included in the Company's estimates as of March 31, 2020, as a result of the COVID-19 pandemic. This position was supported by the assumption that the Company will recover COVID-19 related costs under its U.S. Government contracts based on government relief actions such as the Coronavirus Aid, Relief, and Economic Security Act (the "CARES Act") and U.S. Department of Defense ("DoD") guidance. There
Government Grants	Government Grants - The Company recognizes incentive grants, inclusive of transfers of depreciable assets, from federal, state, and local governments at fair value upon compliance with the conditions of their receipt and reasonable assurance that the grants will be received or the depreciable assets will be transferred. Grants in recognition of specific expenses are recognized in the same period as an offset to those related expenses. Grants related to depreciable assets are recognized over the periods and in the proportions in which depreciation expense on those assets is recognized. For the three months ended March 31, 2020, the Company recognized cash grant benefits of approximately $5 million in other long-term liabilities in the unaudited condensed consolidated statements of financial position. For the three months ended March 31, 2019, the Company recognized cash grant benefits of approximately $36 million in other long-term liabilities in the unaudited condensed consolidated statements of financial position.
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 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.
Loan Receivable	Loan Receivable - The Company holds a loan receivable in connection with a seller financed transaction involving its previously owned Avondale shipyard facility. The receivable is carried at amortized cost in the amount of $40 million, net of a $8 million loan discount, which approximates fair value and is recorded in miscellaneous other assets on the unaudited condensed consolidated statements of financial position. Interest income is recognized on an accrual basis using the effective yield method. The discount is accreted into income using the effective yield method over the estimated life of the loan receivable.
Related Party Transactions	Related Party Transactions - The Company had $84 million outstanding under Industrial Revenue Bonds issued by the Mississippi Business Finance Corporation as of each of March 31, 2020, and December 31, 2019. Prior to the Company's spinoff from Northrop Grumman Corporation, repayment of principal and interest was guaranteed by Northrop Grumman Systems Corporation. The guaranty remains in effect, and the Company has agreed to indemnify Northrop Grumman Systems Corporation for any losses related to the guaranty pursuant to the Separation and Distribution Agreement with Northrop Grumman Corporation.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2020
Stockholders' Equity Note [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The changes in accumulated other comprehensive income (loss) by component for the three months ended March 31, 2020 and 2019, were as follows: ($ in millions) Benefit Plans Other Total Balance as of December 31, 2018 $ (1,283) $ (5) $ (1,288) Amounts reclassified from accumulated other comprehensive loss Amortization of net actuarial loss 1 25 — 25 Tax expense for items of other comprehensive income (6) — (6) Net current period other comprehensive income 19 — 19 Balance as of March 31, 2019 $ (1,264) $ (5) $ (1,269) Balance as of December 31, 2019 (1,407) (2) (1,409) Other comprehensive income (loss) before reclassifications — (2) (2) Amounts reclassified from accumulated other comprehensive loss Amortization of prior service credit 1 (2) — (2) Amortization of net actuarial loss 1 25 — 25 Tax expense for items of other comprehensive income (6) — (6) Net current period other comprehensive income (loss) 17 (2) 15 Balance as of March 31, 2020 $ (1,390) $ (4) $ (1,394) 1 These accumulated comprehensive loss components are included in the computation of net periodic benefit cost. See Note 17: Employee Pension and Other Postretirement Benefits. The tax benefit associated with amounts reclassified from accumulated other comprehensive loss for each of the three months ended March 31, 2020 and 2019, was $6 million.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2020
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) 2020 2019 Net earnings $ 172 $ 118 Weighted-average common shares outstanding 40.7 41.4 Net dilutive effect of stock awards — — Dilutive weighted-average common shares outstanding 40.7 41.4 Earnings per share - basic $ 4.23 $ 2.85 Earnings per share - diluted $ 4.23 $ 2.85

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Mar. 31, 2020
Disaggregation of Revenue [Abstract]
Disaggregation of Revenue [Table Text Block]	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. Certain prior year amounts have been reclassified. See Note 8: Segment Information. 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. Three Months Ended March 31, 2020 ($ in millions) Ingalls Newport News Technical Solutions Intersegment Eliminations Total Revenue Type Product sales $ 578 $ 1,046 $ — $ — $ 1,624 Service revenues 50 293 296 — 639 Intersegment 1 2 21 (24) — Sales and service revenues $ 629 $ 1,341 $ 317 $ (24) $ 2,263 Customer Type Federal $ 628 $ 1,339 $ 228 $ — $ 2,195 Commercial — — 68 — 68 Intersegment 1 2 21 (24) — Sales and service revenues $ 629 $ 1,341 $ 317 $ (24) $ 2,263 Contract Type Firm fixed-price $ 15 $ 2 $ 59 $ — $ 76 Fixed-price incentive 523 638 — — 1,161 Cost-type 90 699 133 — 922 Time and materials — — 104 — 104 Intersegment 1 2 21 (24) — Sales and service revenues $ 629 $ 1,341 $ 317 $ (24) $ 2,263 Three Months Ended March 31, 2019 ($ in millions) Ingalls Newport News Technical Solutions Intersegment Eliminations Total Revenue Type Product sales $ 538 $ 952 $ — $ — $ 1,490 Service revenues 46 327 217 — 590 Intersegment — — 23 (23) — Sales and service revenues $ 584 $ 1,279 $ 240 $ (23) $ 2,080 Customer Type Federal $ 584 $ 1,265 $ 165 $ — $ 2,014 Commercial — 14 52 — 66 Intersegment — — 23 (23) — Sales and service revenues $ 584 $ 1,279 $ 240 $ (23) $ 2,080 Contract Type Firm fixed-price $ 17 $ 3 $ 35 $ — $ 55 Fixed-price incentive 478 453 — — 931 Cost-type 89 823 99 — 1,011 Time and materials — — 83 — 83 Intersegment — — 23 (23) — Sales and service revenues $ 584 $ 1,279 $ 240 $ (23) $ 2,080 Three Months Ended Three Months Ended ($ in millions) 2020 2019 Major Programs Amphibious assault ships $ 347 $ 297 Surface combatants and coast guard cutters 279 286 Other 3 1 Total Ingalls 629 584 Aircraft carriers 698 713 Submarines 455 368 Other 188 198 Total Newport News 1,341 1,279 Government and energy services 253 191 Oil and gas services 64 49 Total Technical Solutions 317 240 Intersegment eliminations (24) (23) Sales and service revenues $ 2,263 $ 2,080

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2020
Segment Reporting [Abstract]
Segment operating results	The following table presents segment results for the three months ended March 31, 2020 and 2019: Three Months Ended ($ in millions) 2020 2019 Sales and Service Revenues Ingalls $ 629 $ 584 Newport News 1,341 1,279 Technical Solutions 317 240 Intersegment eliminations (24) (23) Sales and service revenues $ 2,263 $ 2,080 Operating Income Ingalls $ 68 $ 46 Newport News 95 81 Technical Solutions (7) 2 Segment operating income 156 129 Non-segment factors affecting operating income (loss) Operating FAS/CAS Adjustment 63 34 Non-current state income taxes (4) (2) Operating income $ 215 $ 161
Segment assets	The following table presents the Company's assets by segment: ($ in millions) March 31, 2020 December 31, 2019 Assets Ingalls $ 1,704 $ 1,618 Newport News 4,038 3,886 Technical Solutions 1,472 1,022 Corporate 401 505 Total assets $ 7,615 $ 7,031

Inventoried Costs, Net (Tables)

Inventoried Costs, Net (Tables)	3 Months Ended
	Mar. 31, 2020
Inventory Disclosure [Abstract]
Inventoried costs, net	Inventoried costs were comprised of the following: ($ in millions) March 31, 2020 December 31, 2019 Production costs of contracts in process 1 $ 37 $ 30 Raw material inventory 117 106 Total inventoried costs, net $ 154 $ 136 1 Includes amounts capitalized pursuant to applicable provisions of the FAR and CAS.

Assets and Liabilities Held f_2

Assets and Liabilities Held for Sale (Tables)	3 Months Ended
	Mar. 31, 2020
Discontinued Operations and Disposal Groups [Abstract]
Assets and Liabilities Held for Sale	The following table summarizes the assets and liabilities classified as held for sale: March 31, 2020 December 31, 2019 ($ in millions) Current assets $ 94 $ 74 Property, plant, and equipment 16 2 Other intangible assets, net 2 2 Goodwill 35 — Other non-current assets 37 23 Valuation allowance (6) (6) Total assets held for sale $ 178 $ 95 Current liabilities 65 62 Long-term liabilities 27 15 Total liabilities held for sale $ 92 $ 77

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill [Table Text Block]	For the three months ended March 31, 2020, the carrying amounts of goodwill changed as follows: ($ in millions) Ingalls Newport News Technical Solutions Total Balance as of December 31, 2019 $ 175 $ 721 $ 477 $ 1,373 Acquisitions — — 310 310 Adjustments — — (35) (35) Balance as of March 31, 2020 $ 175 $ 721 $ 752 $ 1,648

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Schedule of Long-term Debt	Long-term debt consisted of the following: ($ in millions) March 31, 2020 December 31, 2019 Senior notes due November 15, 2025, 5.000% 600 600 Senior notes due December 1, 2027, 3.483% 600 600 Mississippi economic development revenue bonds due May 1, 2024, 7.81% 84 84 Gulf opportunity zone industrial development revenue bonds due December 1, 2028, 4.55% 21 21 Revolving credit facility borrowings 380 — Less unamortized debt issuance costs (18) (19) Total long-term debt $ 1,667 $ 1,286

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Components of Lease Expense	Lease costs and related information were as follows: Three Months Ended ($ in millions) 2020 2019 Operating lease costs $ 16 $ 11 Short-term operating lease costs $ 4 $ 5 Variable operating lease costs $ 1 $ 1 Operating cash flows from operating leases $ (16) $ (11) Right-of-use assets obtained in exchange for new operating lease liabilities $ 17 $ 13 Weighted-average remaining lease term (years) - operating leases 10 years 11 years Weighted-average discount rate - operating leases 4.1 % 4.5 %
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	The undiscounted future non-cancellable lease payments under our operating leases were as follows: Year: March 31, 2020 December 31, 2019 2020 $ 34 $ 45 2021 39 38 2022 31 30 2023 25 24 2024 23 22 Thereafter 121 114 Total lease payments 273 273 Less: imputed interest 57 58 Present value of lease liabilities $ 216 $ 215
Reconciliation of Operating Lease Liability Recognized in Statement of Financial Position [Table Text Block]	Lease liabilities included in the Company's consolidated balance sheet as of March 31, 2020, were as follows: ($ in millions) March 31, 2020 December 31, 2019 Short-term operating lease liabilities $ 34 $ 35 Lease liabilities included in liabilities held for sale 29 16 Long-term operating lease liabilities 153 164 Total operating lease liabilities $ 216 $ 215

Employee Pension and Other Po_2

Employee Pension and Other Postretirement Benefits (Tables)	3 Months Ended
	Mar. 31, 2020
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, 2020 and 2019, were as follows: Three Months Ended Pension Benefits Other Benefits ($ in millions) 2020 2019 2020 2019 Components of Net Periodic Benefit Cost Service cost $ 45 $ 36 $ 2 $ 2 Interest cost 64 69 4 5 Expected return on plan assets (121) (102) — — Amortization of prior service cost (credit) 3 5 (5) (5) Amortization of net actuarial loss (gain) 27 28 (2) (3) Net periodic benefit cost $ 18 $ 36 $ (1) $ (1)
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, 2020 and 2019: Three Months Ended ($ in millions) 2020 2019 Pension plans Qualified minimum $ — $ — Discretionary Qualified 20 1 Non-qualified 2 2 Other benefit plans 8 7 Total contributions $ 30 $ 10

Stock Compensation Plans (Table

Stock Compensation Plans (Tables)	3 Months Ended
	Mar. 31, 2020
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, 2020: Stock Awards Weighted-Average Weighted-Average Remaining Contractual Term Total stock awards 391 $ 205.78 1.5

Description of Business (Narrat

Description of Business (Narrative) (Details)	3 Months Ended
	Mar. 31, 2020segments
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	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Deferred gain on receipt of property	$ 5	$ 36
Assets held in rabbi trusts	137		$ 147
Financing Receivable, after Allowance for Credit Loss	40
Receivable with Imputed Interest, Discount	8
Related Party Transaction [Line Items]
Long-term Debt	1,667		1,286
Mississippi Economic Development Revenue Bonds Due May 1, 2024, 7.81% | Bonds
Related Party Transaction [Line Items]
Long-term Debt	$ 84		$ 84

Acquisitions (Narrative) (Detai

Acquisitions (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 378	$ 195
Goodwill arising from acquisitions	310
Goodwill, adjustments	(35)
Hydroid, Inc. [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	378
Cash acquired	2
Preliminary intangible assets and goodwill acquired	$ 310
Fulcrum IT Services, LLC
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired			$ 195
Cash acquired			1
Goodwill arising from acquisitions			133
Intangible Assets			49
Goodwill, adjustments			1
G2, Inc.
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired				$ 77
Cash acquired				2
Goodwill arising from acquisitions				46
Intangible Assets				$ 20
Goodwill, adjustments			$ 7

Stockholders' Equity (Narrative

Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Nov. 05, 2019	Dec. 31, 2018	Nov. 07, 2017
Stockholders' Equity [Line Items]
Amount authorized for stock repurchase program				$ 3,200		$ 2,200
Repurchased shares of treasury stock	390,904	183,885
Treasury stock activity	$ 84	$ 36
Treasury Stock Value Previously Acquired, settled for cash		$ 48
Dividends declared per share	$ 1.03	$ 0.86
Dividends paid	$ 42	$ 36
Accumulated other comprehensive income (loss)	(1,394)	(1,269)	$ (1,409)		$ (1,288)
Benefit Plans
Stockholders' Equity [Line Items]
Accumulated other comprehensive income (loss)	(1,390)	(1,264)	(1,407)		(1,283)
Other
Stockholders' Equity [Line Items]
Accumulated other comprehensive income (loss)	$ (4)	$ (5)	$ (2)		$ (5)

Stockholders' Equity Accumulate

Stockholders' Equity Accumulated Other Comprehensive Income (Loss) (Table) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning		$ (1,409)	$ (1,288)
Other comprehensive income (loss) before reclassifications		(2)
Amortization of prior service cost (credit)	[1]	(2)
Amortization of net actuarial loss (gain)	[1]	25	25
Tax benefit (expense) for items of other comprehensive income		(6)	(6)
Other comprehensive income (loss), net of tax		15	19
Balance, ending		(1,394)	(1,269)
Income tax expense (benefit)		44	31
Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning		(1,407)	(1,283)
Amortization of prior service cost (credit)	[1]	(2)
Amortization of net actuarial loss (gain)	[1]	25	25
Tax benefit (expense) for items of other comprehensive income		(6)	(6)
Other comprehensive income (loss), net of tax		17	19
Balance, ending		(1,390)	(1,264)
Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning		(2)	(5)
Other comprehensive income (loss) before reclassifications		(2)
Other comprehensive income (loss), net of tax		(2)
Balance, ending		(4)	(5)
Reclassification out of AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense (benefit)		$ 6	$ 6
[1]	These accumulated comprehensive loss components are included in the computation of net periodic benefit cost. See Note 17: Employee Pension and Other Postretirement Benefits. The tax benefit associated with amounts reclassified from accumulated other comprehensive loss for each of the three months ended March 31, 2020 and 2019, was $6 million.

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, 2020	Mar. 31, 2019
Earnings Per Share, Basic and Diluted [Abstract]
Net earnings (loss)	$ 172	$ 118
Weighted-average common shares outstanding (in shares)	40.7	41.4
Dilutive weighted-average common shares outstanding (in shares)	40.7	41.4
Earnings (loss) per share - basic (in dollars per share)	$ 4.23	$ 2.85
Earnings (loss) per share - diluted (in dollars per share)	$ 4.23	$ 2.85

Earnings Per Share (Narrative)

Earnings Per Share (Narrative) (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
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	0.3	0.3

Revenue (Table) (Details)

Revenue (Table) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Sales and service revenues	$ 2,263	$ 2,080
Firm fixed-price
Disaggregation of Revenue [Line Items]
Sales and service revenues	76	55
Fixed-price incentive
Disaggregation of Revenue [Line Items]
Sales and service revenues	1,161	931
Cost-type
Disaggregation of Revenue [Line Items]
Sales and service revenues	922	1,011
Time-and-materials
Disaggregation of Revenue [Line Items]
Sales and service revenues	104	83
Federal
Disaggregation of Revenue [Line Items]
Sales and service revenues	2,195	2,014
Commercial
Disaggregation of Revenue [Line Items]
Sales and service revenues	68	66
Product [Member]
Disaggregation of Revenue [Line Items]
Sales and service revenues	1,624	1,490
Service [Member]
Disaggregation of Revenue [Line Items]
Sales and service revenues	639	590
Ingalls
Disaggregation of Revenue [Line Items]
Sales and service revenues	629	584
Intersegment	1
Ingalls | Amphibious assault ships
Disaggregation of Revenue [Line Items]
Sales and service revenues	347	297
Ingalls | Surface combatants and coast guard cutters
Disaggregation of Revenue [Line Items]
Sales and service revenues	279	286
Ingalls | Other programs
Disaggregation of Revenue [Line Items]
Sales and service revenues	3	1
Ingalls | Firm fixed-price
Disaggregation of Revenue [Line Items]
Sales and service revenues	15	17
Ingalls | Fixed-price incentive
Disaggregation of Revenue [Line Items]
Sales and service revenues	523	478
Ingalls | Cost-type
Disaggregation of Revenue [Line Items]
Sales and service revenues	90	89
Ingalls | Intersegment
Disaggregation of Revenue [Line Items]
Sales and service revenues	1
Ingalls | Federal
Disaggregation of Revenue [Line Items]
Sales and service revenues	628	584
Ingalls | Intersegment
Disaggregation of Revenue [Line Items]
Sales and service revenues	1
Ingalls | Product [Member]
Disaggregation of Revenue [Line Items]
Sales and service revenues	578	538
Ingalls | Service [Member]
Disaggregation of Revenue [Line Items]
Sales and service revenues	50	46
Newport News
Disaggregation of Revenue [Line Items]
Sales and service revenues	1,341	1,279
Intersegment	2
Newport News | Aircraft carriers
Disaggregation of Revenue [Line Items]
Sales and service revenues	698	713
Newport News | Submarines
Disaggregation of Revenue [Line Items]
Sales and service revenues	455	368
Newport News | Other programs
Disaggregation of Revenue [Line Items]
Sales and service revenues	188	198
Newport News | Firm fixed-price
Disaggregation of Revenue [Line Items]
Sales and service revenues	2	3
Newport News | Fixed-price incentive
Disaggregation of Revenue [Line Items]
Sales and service revenues	638	453
Newport News | Cost-type
Disaggregation of Revenue [Line Items]
Sales and service revenues	699	823
Newport News | Intersegment
Disaggregation of Revenue [Line Items]
Sales and service revenues	2
Newport News | Federal
Disaggregation of Revenue [Line Items]
Sales and service revenues	1,339	1,265
Newport News | Commercial
Disaggregation of Revenue [Line Items]
Sales and service revenues		14
Newport News | Intersegment
Disaggregation of Revenue [Line Items]
Sales and service revenues	2
Newport News | Product [Member]
Disaggregation of Revenue [Line Items]
Sales and service revenues	1,046	952
Newport News | Service [Member]
Disaggregation of Revenue [Line Items]
Sales and service revenues	293	327
Technical Solutions
Disaggregation of Revenue [Line Items]
Sales and service revenues	317	240
Intersegment	21	23
Technical Solutions | Government and energy services
Disaggregation of Revenue [Line Items]
Sales and service revenues	253	191
Technical Solutions | Oil and gas services
Disaggregation of Revenue [Line Items]
Sales and service revenues	64	49
Technical Solutions | Firm fixed-price
Disaggregation of Revenue [Line Items]
Sales and service revenues	59	35
Technical Solutions | Cost-type
Disaggregation of Revenue [Line Items]
Sales and service revenues	133	99
Technical Solutions | Time-and-materials
Disaggregation of Revenue [Line Items]
Sales and service revenues	104	83
Technical Solutions | Intersegment
Disaggregation of Revenue [Line Items]
Sales and service revenues	21	23
Technical Solutions | Federal
Disaggregation of Revenue [Line Items]
Sales and service revenues	228	165
Technical Solutions | Commercial
Disaggregation of Revenue [Line Items]
Sales and service revenues	68	52
Technical Solutions | Intersegment
Disaggregation of Revenue [Line Items]
Sales and service revenues	21	23
Technical Solutions | Service [Member]
Disaggregation of Revenue [Line Items]
Sales and service revenues	296	217
Intersegment Elimination
Disaggregation of Revenue [Line Items]
Sales and service revenues	(24)	(23)
Intersegment	(24)	(23)
Intersegment Elimination | Intersegment
Disaggregation of Revenue [Line Items]
Sales and service revenues	(24)	(23)
Intersegment Elimination | Intersegment
Disaggregation of Revenue [Line Items]
Sales and service revenues	$ (24)	$ (23)

Revenue (Narrative) (Details)

Revenue (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 45,200
Revenue, performance obligation, recognition percentage, year two	30.00%
Revenue, performance obligation, recognition percentage, year four	25.00%
Increase (Decrease) in Net Contract Assets	$ 208
Contract with Customer, Liability, Revenue Recognized	274	$ 217
Contracts Accounted for under Percentage of Completion
Change in Accounting Estimate
Increase (decrease) in operating income due to net cumulative catch-up adjustments	$ 32	$ (6)
Increase (decrease) in diluted earnings per share due to net cumulative catch-up adjustments	$ 0.62	$ (0.11)

Segment Information (Narrative)

Segment Information (Narrative) (Details)	3 Months Ended
	Mar. 31, 2020segments
Segment Reporting [Abstract]
Number of reportable segments	3

Segment Operating Results (Tabl

Segment Operating Results (Table) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Sales and Service Revenues
Sales and service revenue	$ 2,263	$ 2,080
Operating Income (Loss)
Operating income (loss)	215	161
Operating Segments
Operating Income (Loss)
Operating income (loss)	156	129
Ingalls
Sales and Service Revenues
Sales and service revenue	629	584
Operating Income (Loss)
Operating income (loss)	68	46
Newport News
Sales and Service Revenues
Sales and service revenue	1,341	1,279
Operating Income (Loss)
Operating income (loss)	95	81
Technical Solutions
Sales and Service Revenues
Sales and service revenue	317	240
Operating Income (Loss)
Operating income (loss)	(7)	2
Intersegment Elimination
Sales and Service Revenues
Sales and service revenue	(24)	(23)
Non-segment factors affecting operating income (loss)
Non-segment factors affecting operating income (loss)
Operating FAS/CAS Adjustment	63	34
Non-current state income taxes	$ (4)	$ (2)

Segment Assets (Table) (Details

Segment Assets (Table) (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Segment Reporting Information
Assets	$ 7,615	$ 7,031
Ingalls
Segment Reporting Information
Assets	1,704	1,618
Newport News
Segment Reporting Information
Assets	4,038	3,886
Technical Solutions
Segment Reporting Information
Assets	1,472	1,022
Corporate
Segment Reporting Information
Assets	$ 401	$ 505

Inventoried Costs, Net (Table)

Inventoried Costs, Net (Table) (Details) - USD ($) $ in Millions		Mar. 31, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Inventoried costs	[1]	$ 37	$ 30
Raw material inventory		117	106
Total inventoried costs, net		$ 154	$ 136
[1]	Includes amounts capitalized pursuant to applicable provisions of the FAR and CAS.

Assets and Liabilities Held f_3

Assets and Liabilities Held for Sale (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
Technical Solutions
Assets and Liabilities Held for Sale [Line Items]
Impairment charge	$ 6

Assets and Liabilities Held f_4

Assets and Liabilities Held for Sale (Table) (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Assets and Liabilities Held for Sale [Line Items]
Total assets held for sale	$ 178	$ 95
Total liabilities held for sale	92	77
Technical Solutions
Assets and Liabilities Held for Sale [Line Items]
Current assets	94	74
Property, plant, and equipment	16	2
Other intangible assets, net	2	2
Goodwill	35
Other non-current assets	37	23
Valuation allowance	(6)	(6)
Total assets held for sale	178	95
Current liabilities	65	62
Long-term liabilities	27	15
Total liabilities held for sale	$ 92	$ 77

Goodwill (Narrative) (Details)

Goodwill (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Goodwill
Accumulated goodwill impairment losses	$ 2,906	$ 2,906
Ingalls
Goodwill
Accumulated goodwill impairment losses	1,568	1,568
Newport News
Goodwill
Accumulated goodwill impairment losses	1,187	1,187
Technical Solutions
Goodwill
Accumulated goodwill impairment losses	151	$ 151
Goodwill, Translation and Purchase Accounting Adjustments	$ 35

Change in Carrying Amount of Go

Change in Carrying Amount of Goodwill (Table) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020USD ($)
Goodwill [Roll Forward]
Goodwill beginning balance	$ 1,373
Goodwill, acquisitions	310
Goodwill, adjustments	(35)
Goodwill ending balance	1,648
Ingalls
Goodwill [Roll Forward]
Goodwill beginning balance	175
Goodwill ending balance	175
Newport News
Goodwill [Roll Forward]
Goodwill beginning balance	721
Goodwill ending balance	721
Technical Solutions
Goodwill [Roll Forward]
Goodwill beginning balance	477
Goodwill, acquisitions	310
Goodwill, adjustments	(35)
Goodwill ending balance	$ 752

Other Intangible Assets (Narrat

Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Aggregate weighted-average amortization period	40 years
Amortization of purchased intangibles	$ 11	$ 11
Expected amortization for purchased intangible assets:
Expected amortization, 2020	44
Expected amortization, 2021	40
Expected amortization, 2022	37
Expected amortization, 2023	26
Expected amortization, 2024	$ 16
Fulcrum IT Services, LLC
Finite-Lived Intangible Assets [Line Items]
Aggregate weighted-average amortization period			7 years
Identifiable intangible assets acquired			$ 49
G2, Inc.
Finite-Lived Intangible Assets [Line Items]
Identifiable intangible assets acquired				$ 20

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Tax Contingency [Line Items]
Effective income tax rate	20.40%	20.80%
Federal Statutory Income Tax Rate, Percent	21.00%
Unrecognized Tax Benefits, Period Increase (Decrease)	$ 2
Unrecognized Tax Benefits	38
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	30
Maximum
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 1

Schedule of Long-term debt (Tab

Schedule of Long-term debt (Table) (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt	$ 1,667	$ 1,286
Less unamortized debt issuance costs	(18)	(19)
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt	380
Less unamortized debt issuance costs	(6)	(7)
Senior Notes
Debt Instrument [Line Items]
Less unamortized debt issuance costs	(12)	(12)
Senior Notes | Senior Notes Due November 15, 2025, 5.000%
Debt Instrument [Line Items]
Long-term debt	$ 600	$ 600
Debt Instrument, Interest Rate, Stated Percentage	5.00%	5.00%
Senior Notes | Senior notes due December 1, 2027, 3.483% [Member]
Debt Instrument [Line Items]
Long-term debt	$ 600	$ 600
Debt Instrument, Interest Rate, Stated Percentage	3.483%	3.483%
Bonds | Mississippi Economic Development Revenue Bonds Due May 1, 2024, 7.81%
Debt Instrument [Line Items]
Long-term debt	$ 84	$ 84
Debt Instrument, Interest Rate, Stated Percentage	7.81%	7.81%
Bonds | Gulf Opportunity Zone Industrial Development Revenue Bonds Due December 1, 2028, 4.55%
Debt Instrument [Line Items]
Long-term debt	$ 21	$ 21
Debt Instrument, Interest Rate, Stated Percentage	4.55%	4.55%

Credit Facility (Narrative) (De

Credit Facility (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Credit Facility
Long-term Debt	$ 1,667	$ 1,286
Unamortized Debt Issuance Expense	18	19
Revolving Credit Facility
Credit Facility
Credit facility revolver	$ 1,250
Debt Instrument, Contractual Term	5 years
Long-term Debt	$ 380
Letters of credit issued but undrawn	16
Line of Credit Facility, Remaining Borrowing Capacity	854
Unamortized Debt Issuance Expense	6	$ 7
Revolving Credit Facility | Letter of Credit
Credit Facility
Credit facility revolver	$ 500
364-Day Credit Facility [Member]
Credit Facility
Debt Instrument, Description of Variable Rate Basis	LIBOR
364-Day Credit Facility [Member] | Subsequent Event [Member]
Credit Facility
Credit facility revolver	$ 500
Commitment fee, based on unused capacity	0.50%
364-Day Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum | Subsequent Event [Member]
Credit Facility
Spread on variable rate	2.00%
364-Day Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum | Subsequent Event [Member]
Credit Facility
Spread on variable rate	2.375%

Debt Commercial Paper (Narrativ

Debt Commercial Paper (Narrative) (Details) $ in Millions	Mar. 31, 2020USD ($)
Short-term Debt [Line Items]
Commercial Paper	$ 88
Maximum
Short-term Debt [Line Items]
Commercial Paper	$ 1,000

Debt Senior Note (Narrative) (D

Debt Senior Note (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term Debt	$ 1,667	$ 1,286
Unamortized Debt Issuance Expense	18	19
Senior Notes
Debt Instrument [Line Items]
Unamortized Debt Issuance Expense	12	$ 12
Senior Notes | Senior Notes Due 2025, 3.844% [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 500
Debt Instrument, Interest Rate, Stated Percentage	3.844%
Senior Notes | Senior Notes Due 2030, 4.200% [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 500
Debt Instrument, Interest Rate, Stated Percentage	4.20%

Debt (Narrative) (Details)

Debt (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Fair value of long term debt	$ 1,687	$ 1,379
Long-term Debt, Maturities, Repayments of Principal in Year Three	380
Long-term Debt, Maturities, Repayments of Principal in Year Five	$ 84

Investigations, Claims, and L_2

Investigations, Claims, and Litigation (Narrative) (Details) - Bolivarian Republic of Venezuela $ in Millions	3 Months Ended
	Mar. 31, 2020USD ($)frigates
Loss Contingencies
Number of Foreign Built Frigates | frigates	2
Arbitral statement claim	$ 151
Litigation counter claim [Member]
Loss Contingencies
Arbitral statement claim	$ 22

Components of Lease Expense (Ta

Components of Lease Expense (Table) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease cost	$ 16	$ 11
Short-term lease cost	4	5
Variable operating lease cost	1	1
Operating cash flows from operating leases	(16)	(11)
Right-of-Use asset obtained in exchange for new operating lease liability	$ 17	$ 13
Weighted-average remaining lease term (years) - operating leases	10 years	11 years
Weighted-average discount rate - operating leases	4.10%	4.50%

Future Minimim Operating Lease

Future Minimim Operating Lease Payments (Table) (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
2020	$ 34	$ 45
2021	39	38
2022	31	30
2023	25	24
2024	23	22
Thereafter	121	114
Total lease payments	273	273
Less: imputed interest	57	58
Present value of lease liabilities	$ 216	$ 215

Leases Reconciliation of Operat

Leases Reconciliation of Operating Lease Liability Recognized in Statement of Financial Position (Table) (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Short-term operating lease liabilities	$ 34	$ 35
Lease liabilities included in liabilities held for sale	29	16
Long-term operating lease liabilities	153	164
Total operating lease liabilities	$ 216	$ 215

Commitments and Contingencies (

Commitments and Contingencies (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020USD ($)
Commitments and Contingencies
Entity Number of Employees	42,000
Percentage of workforce subject to Collective Bargaining Arrangements	50.00%
Number of Collective Bargaining Agreements	9
Surety Bonds Outstanding
Commitments and Contingencies
Surety bonds outstanding	$ 272
Revolving Credit Facility [Member]
Commitments and Contingencies
Letters of credit issued but undrawn	$ 16
Minimum
Commitments and Contingencies
Period Covered by Collective Bargaining Agreements	3 years
Maximum
Commitments and Contingencies
Period Covered by Collective Bargaining Agreements	5 years
Newport News
Commitments and Contingencies
Number of Collective Bargaining Agreements	4
Ingalls
Commitments and Contingencies
Number of Collective Bargaining Agreements	5
Technical Solutions
Commitments and Contingencies
Entity Number of Employees	50
United Steelworkers [Member] | Newport News
Commitments and Contingencies
Percentage of workforce subject to Collective Bargaining Arrangements	50.00%

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, 2020	Mar. 31, 2019
Pension Benefits
Defined Benefit Plan Disclosure
Service cost	$ 45	$ 36
Interest cost	64	69
Expected return on plan assets	(121)	(102)
Amortization of prior service cost (credit)	3	5
Amortization of net actuarial loss (gain)	27	28
Net periodic benefit cost	18	36
Other Benefits
Defined Benefit Plan Disclosure
Service cost	2	2
Interest cost	4	5
Amortization of prior service cost (credit)	(5)	(5)
Amortization of net actuarial loss (gain)	(2)	(3)
Net periodic benefit cost	$ (1)	$ (1)

Employee Pension and Other Po_4

Employee Pension and Other Postretirement Benefits Cash Contributions (Table) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Defined Benefit Plan Disclosure
Other benefit plans	$ 8	$ 7
Total contributions	30	10
Discretionary Contribution | Qualified
Defined Benefit Plan Disclosure
Pension contributions	20	1
Discretionary Contribution | Non-qualified
Defined Benefit Plan Disclosure
Pension contributions	$ 2	$ 2

Employee Pension and Other Po_5

Employee Pension and Other Postretirement Benefits (Narrative) (Details) $ in Millions	Mar. 31, 2020USD ($)
Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year	$ 205

Stock Compensation Plans (Narra

Stock Compensation Plans (Narrative) (Details) - $ / shares shares in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Stock awards
Stock rights, weighted-average grant date fair value	$ 205.78
Stock awards, vested in the period	0.1	0.3
Stock awards, transferred for employee withholding taxes	0.1	0.1
Restricted performance stock rights
Stock awards
Stock rights, granted	0.1	0.1
Stock rights, weighted-average grant date fair value	$ 229.42	$ 210.24
Restricted performance stock rights | Minimum
Stock awards
Restricted performance stock rights ultimate vesting percentage	0.00%
Restricted performance stock rights | Maximum
Stock awards
Restricted performance stock rights ultimate vesting percentage	200.00%

Schedule of Status of Stock Awa

Schedule of Status of Stock Awards (Table) (Details) shares in Thousands	3 Months Ended
	Mar. 31, 2020$ / sharesshares
Stock awards
Stock awards, outstanding | shares	391
Stock awards, weighted-average grant date fair value | $ / shares	$ 205.78
Stock awards, weighted-average remaining contractual term	1 year 6 months

Stock Compensation Plans Compen

Stock Compensation Plans Compensation and Unrecognized Compensation Expense (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Compensation Expense [Abstract]
Share-based Payment Arrangement, Expense	$ 7	$ 5
Tax benefits for stock-based compensation	1	1
Stock Awards [Member]
Compensation Expense [Abstract]
Employee Service Share-Based Compensation, Tax Benefit Realized From Issuance Of Instruments Other Than Options	$ 2	$ 5
Restricted Stock [Member]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation expense, period for recognition	1 year 2 months 12 days
Restricted performance stock rights
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation expense	$ 48
Unrecognized compensation expense, period for recognition	1 year 9 months 18 days
Maximum | Restricted Stock [Member]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation expense	$ 1

Subsidiary Guarantors Narrative

Subsidiary Guarantors Narrative (Details)	3 Months Ended
	Mar. 31, 2020
Subsidiary Guarantors [Abstract]
Parent ownership percentage of subsidiary guarantors	100.00%