Huntington Ingalls Industries (HII) 10-Q 7 May 15 2015 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2015	1-May-15
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2015
Entity Registrant Name	HUNTINGTON INGALLS INDUSTRIES, INC.
Entity Central Index Key	1501585
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		48,635,697

Condensed_Consolidated_Stateme

Condensed Consolidated Statements Of Operations and Comprehensive Income (Unaudited) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Sales and service revenues
Product sales	$1,250	$1,332
Service revenues	320	262
Total sales and service revenues	1,570	1,594
Cost of sales and service revenues
Cost of product sales	985	1,060
Cost of service revenues	280	227
Income (loss) from operating investments, net	1	2
General and administrative expenses	150	150
Operating income (loss)	156	159
Other income (expense)
Interest expense	-23	-27
Earnings (loss) before income taxes	133	132
Federal income taxes	46	42
Net earnings (loss)	87	90
Basic earnings (loss) per share (in dollars per share)	$1.80	$1.83
Weighted-average common shares outstanding (in shares)	48.4	49.1
Diluted earnings (loss) per share (in dollars per share)	$1.79	$1.81
Weighted-average diluted shares outstanding (in shares)	48.7	49.7
Dividends declared per share	$0.40	$0.20
Other comprehensive income (loss)
Change in unamortized benefit plan costs	22	8
Other	-2	1
Tax benefit (expense) for items of other comprehensive income	-7	-3
Other comprehensive income (loss), net of tax	13	6
Comprehensive income (loss)	$100	$96

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements Of Financial Position (Unaudited) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Current Assets
Cash and cash equivalents	$904	$990
Accounts receivable, net	1,219	1,038
Inventoried costs, net	336	339
Deferred income taxes	132	129
Prepaid expenses and other current assets	37	50
Total current assets	2,628	2,546
Property, plant, and equipment, net of accumulated depreciation of $1,388 million as of 2015 and $1,351 million as of 2014	1,768	1,792
Goodwill	1,032	1,026
Other purchased intangibles, net	540	547
Pension plan assets	21	17
Long-term deferred tax asset	203	212
Miscellaneous other assets	127	129
Total assets	6,319	6,269
Current Liabilities
Trade accounts payable	307	269
Accrued employees' compensation	183	248
Current portion of long-term debt	108	108
Current portion of postretirement plan liabilities	143	143
Current portion of workers' compensation liabilities	223	221
Advance payments and billings in excess of revenues	78	74
Other current liabilities	290	249
Total current liabilities	1,332	1,312
Long-term debt	1,592	1,592
Pension plan liabilities	949	939
Other postretirement plan liabilities	509	507
Workers' compensation liabilities	453	449
Other long-term liabilities	104	105
Total liabilities	4,939	4,904
Stockholders' Equity
Common stock, $0.01 par value; 150 million shares authorized; 52.0 million issued and 48.6 million outstanding as of March 31, 2015, and 51.5 million issued and 48.3 million outstanding as of December 31, 2014	1	1
Additional paid-in capital	1,922	1,959
Retained earnings (deficit)	593	525
Treasury stock	-287	-258
Accumulated other comprehensive income (loss)	-849	-862
Total stockholders' equity	1,380	1,365
Total liabilities and stockholders' equity	$6,319	$6,269

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements Of Financial Position (Unaudited) (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Accumulated depreciation	($1,388)	($1,351)
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)	52,000,000	51,500,000
Common stock, shares outstanding (in shares)	48,600,000	48,300,000

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements Of Cash Flows (Unaudited) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Operating Activities
Net earnings (loss)	$87	$90
Adjustments to reconcile to net cash provided by (used in) operating activities
Depreciation	39	54
Amortization of purchased intangibles	7	6
Amortization of debt issuance costs	3	3
Stock-based compensation	4	5
Excess tax benefit related to stock-based compensation	-13	-2
Deferred income taxes	-1	8
Change in
Accounts receivable	-189	-162
Inventoried costs	3	-2
Prepaid expenses and other assets	-11	-4
Accounts payable and accruals	39	-197
Retiree benefits	30	-13
Other non-cash transactions, net	-1
Net cash provided by (used in) operating activities	-3	-214
Investing Activities
Additions to property, plant, and equipment	-20	-24
Acquisitions of businesses, net of cash received	-6	-46
Proceeds from disposition of assets	32
Net cash provided by (used in) investing activities	6	-70
Financing Activities
Dividends paid	-19	-10
Repurchases of common stock	-29	-10
Employee taxes on certain share-based payment arrangements	-54
Proceeds from stock option exercises		1
Excess tax benefit related to stock-based compensation	13	2
Net cash provided by (used in) financing activities	-89	-17
Change in cash and cash equivalents	-86	-301
Cash and cash equivalents, beginning of period	990	1,043
Cash and cash equivalents, end of period	904	742
Supplemental Cash Flow Disclosure
Cash paid for income taxes	26	30
Cash paid for interest	23	45
Non-Cash Investing and Financing Activities
Capital expenditures accrued in accounts payable	$3	$2

Condensed_Consolidated_Stateme4

Condensed Consolidated Statements Of Changes In Equity (Unaudited) (USD $)	Total	Common Stock	Additional Paid-in Capital	Retained Earnings (Deficit)	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
In Millions, unless otherwise specified
Balance at Dec. 31, 2013	$1,521	$1	$1,925	$236	($120)	($521)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	90			90
Dividends declared	-10			-10
Additional paid-in capital	-21		-21
Other comprehensive income (loss), net of tax	6					6
Treasury stock activity	-25				-25
Balance at Mar. 31, 2014	1,561	1	1,904	316	-145	-515
Balance at Dec. 31, 2014	1,365	1	1,959	525	-258	-862
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings (loss)	87			87
Dividends declared	-19			-19
Additional paid-in capital	-37		-37
Other comprehensive income (loss), net of tax	13					13
Treasury stock activity	-29				-29
Balance at Mar. 31, 2015	$1,380	$1	$1,922	$593	($287)	($849)

Condensed_Consolidated_Stateme5

Condensed Consolidated Statements of Changes in Equity (Unaudited) (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Statement of Stockholders' Equity [Abstract]
Dividends declared per share	$0.40	$0.20

Description_of_Business

Description of Business	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	DESCRIPTION OF BUSINESS
	For more than a century, Huntington Ingalls Industries, Inc. ("HII" or the "Company") has been designing, building, overhauling and repairing ships primarily for the U.S. Navy and the U.S. Coast Guard. The Company conducts business primarily with the U.S. Government, principally the Department of Defense ("DoD"). As prime contractor, principal subcontractor, team member or partner, HII participates in many high-priority U.S. defense technology programs. HII is organized into three reportable segments: Ingalls, Newport News, and Other. 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 DDG-51 Arleigh Burke-class 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 Other segment was established in the second quarter of 2014 to account for certain of the Company's non-shipbuilding commercial activities.

Basis_of_Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2015
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.
	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. These unaudited condensed consolidated financial statements 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, 2014.
	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 unaudited condensed consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets and liabilities and the disclosure of contingencies at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period. Estimates have been prepared on the basis of the most current and best available information and actual results could differ materially from those estimates.
	The Bipartisan Budget Act of 2013 established budget top lines and provided sequestration relief for 2014 and 2015. Sequestration remains in effect for 2016 through 2021 and could result in significant decreases in DoD spending that could negatively impact the Company's revenues and its estimated recovery of goodwill and other long-lived assets.
	Revenue Recognition - The majority of the Company's business is derived from long-term contracts for the construction of naval vessels, production of goods, and provision of services to the federal government, principally the U.S. Navy. In accounting for these contracts, the Company extensively utilizes the cost-to-cost measure of the percentage-of-completion method of accounting, principally based upon total costs incurred. Under this method, sales, including estimated earned fees or profits, are recorded as costs are incurred, generally based on the percentage that total costs incurred bear to total estimated costs at completion. For certain contracts that provide for deliveries of a substantial number of similar units, sales are accounted for using units of delivery as the basis to measure progress toward completion. Certain contracts contain provisions for price redetermination or for cost and/or performance incentives. Such redetermined amounts or incentives are included in sales when the amounts can reasonably be determined and estimated. Amounts representing contract change orders, claims, requests for equitable adjustment, or limitations in funding are included in sales only when they can be reliably estimated and realization is probable. The Company is accounting for one of its contracts under the percentage-of-completion method based on a zero profit margin and will continue such accounting until results can be estimated more precisely. Revenues related to this contract represent less than 1% of the Company's total revenues for the three months ended March 31, 2015. The Company estimates profit as the difference between total estimated revenues and total estimated cost of a contract and recognizes that profit over the life of the contract based on progress toward completion. If the Company estimates a contract will result in a loss, the full amount of the estimated loss is recognized against income in the period in which the loss is identified. The Company classifies contract revenues as product sales or service revenues depending upon the predominant attributes of the relevant underlying contracts.
	The Company recognizes changes in estimates of contract sales, costs, and profits using the cumulative catch-up method of accounting. This method recognizes in the current period the cumulative effect of the changes on current and prior periods. Accordingly, the effect of the changes on future periods of contract performance is recognized as if the revised estimate had been the original estimate. For the three months ended March 31, 2015 and 2014, net cumulative catch-up adjustments increased operating income by $55 million and $44 million, respectively, and increased diluted earnings per share by $0.73 and $0.58, respectively. No individual adjustment was material to the Company's consolidated statements of operations and comprehensive income in any of these periods.
	The Company also enters into other types of contracts such as certain services or commercial arrangements. For such contracts not associated with the design, development, manufacture, or modification of complex equipment, revenues are recognized upon delivery or as services are rendered once persuasive evidence of an arrangement exists, the price is fixed or determinable, and collectibility is reasonably assured. Costs related to these contracts are expensed as incurred.
	Fair Value of Financial Instruments - Except for long-term debt and available-for-sale securities held in trust, 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 rabbi trusts established to fund certain non-qualified pension plans. These trusts consist of available-for-sale investments primarily in marketable securities. The assets are held at fair value, and a significant majority of investments held in the trusts are valued within Level 1 of the fair value hierarchy and no material amounts are valued within Level 3 of the fair value hierarchy. The rabbi trusts were valued at $46 million and $45 million as of March 31, 2015, and December 31, 2014, respectively, and are presented within miscellaneous other assets within the unaudited condensed consolidated statements of financial position.

Accounting_Standards_Updates

Accounting Standards Updates	3 Months Ended
	Mar. 31, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Accounting Standards Updates	ACCOUNTING STANDARDS UPDATES
	On April 7, 2015, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2015-03, "Interest—Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs." The update requires the presentation of capitalized debt issuance costs as a direct reduction of the related debt liability, consistent with the current required presentation of debt discounts. The standard is effective for public entities for annual reporting periods beginning after Dec. 15, 2015, and interim periods within those periods. The Company does not expect the adoption of ASU 2015-03 to have a material impact on the Company's consolidated financial position, results of operations, or cash flows.
	On May 28, 2014, the FASB issued the final standard on revenue from contracts with customers. The standard, issued as ASU 2014-09, outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the standard is that "an entity shall recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services." The standard provides a five-step analysis of transactions to determine when and how revenue should be recognized. The five steps are: Identify the contract with the customer; Identify the performance obligations in the contract; Determine the transaction price; Allocate the transaction price to the performance obligations; and Recognize revenue when or as each performance obligation is satisfied. The standard also includes disclosure requirements to provide greater insight into both revenue that has been recognized and revenue that is expected to be recognized in the future from existing contracts, as well as quantitative and qualitative information about significant judgments and changes in the judgments that management made to determine revenue that is recorded. The guidance permits the use of either a retrospective or cumulative effect transition method. As approved, ASU 2014-09 will be effective for public entities for annual reporting periods, including interim reporting periods within those periods, beginning after December 15, 2016 and does not permit early application. On April 1, 2015, the FASB voted to propose a deferral of the effective date of the new revenue recognition standard by one year. Based on the FASB's proposed decision, public entities would apply the new revenue standard to annual reporting periods beginning after December 15, 2017, but early adoption for annual reporting periods beginning after December 31, 2016, would be permitted. The Company is currently evaluating the impact that will result from the implementation of ASU 2014-09 on its financial statements and disclosures, contracting and accounting processes, internal controls, and information technology systems.

Avondale

Avondale	3 Months Ended
	Mar. 31, 2015
Restructuring and Related Activities [Abstract]
Avondale	AVONDALE
	In 2010, plans were announced to consolidate the Company's Ingalls shipbuilding operations by winding down shipbuilding at the Avondale, Louisiana facility in 2013 after completion of LPD-class ships that were under construction at this facility. In October 2014, the Company ceased shipbuilding construction operations at the Avondale facility. The consolidation is intended to reduce costs, increase efficiency, and address shipbuilding overcapacity.
	In connection with and as a result of the decision to wind down shipbuilding at the Avondale facility, the Company began incurring and paying related costs, including, but not limited to, severance expense, relocation expense, and asset write-downs related to the Avondale facilities. Management's current estimate of these expenditures is $287 million. Such costs are expected to be recoverable under existing flexibly-priced contracts or future negotiated contracts in accordance with Federal Acquisition Regulation ("FAR") provisions for the treatment of restructuring and shutdown related costs. The Company is currently in discussions with the U.S. Navy regarding its cost submission to support the recoverability of these costs under the FAR and applicable contracts.
	The Defense Contract Audit Agency ("DCAA"), a DoD agency, prepared an initial audit report on the Company's July 2010 cost proposal for restructuring and shutdown related costs of $310 million, which stated that the proposal was not adequately supported for the DCAA to reach a conclusion and questioned approximately $25 million, or 8%, of the costs submitted by the Company. In July 2014, the Company received a letter from the Supervisor of Shipbuilding requesting that the Company revise its restructuring proposal to address certain documentation issues identified by the DCAA in order for the Government to make an adequate evaluation of the restructuring proposal. In August 2014, the Company received a letter from the Supervisor of Shipbuilding proposing a joint meeting regarding the treatment of specific costs included in the restructuring proposal and acknowledging that the allowability and allocability of costs will be determined by the Government in an Advanced Agreement in accordance with FAR. The Company submitted a revised proposal in March 2015 to address the concerns of the DCAA and to reflect a revised estimated total cost of $287 million.
	Ultimately, the Company anticipates agreement with the U.S. Navy that is substantially in accordance with management's cost recovery expectations. Accordingly, HII has treated these costs as allowable costs in determining the earnings performance on its contracts in process. The actual restructuring expenses related to the wind down may be greater than the Company's current estimate, and any inability to recover such costs could result in a material effect on the Company's consolidated financial position, results of operations or cash flows.
	The Company also evaluated the effect that the wind down of the Avondale facilities might have on the benefit plans in which HII employees participate. HII determined that the impact of a curtailment and other resulting adjustments in these plans was not material to its consolidated financial position, results of operations or cash flows.
	As of March 31, 2015, and December 31, 2014, $203 million and $212 million, respectively, of restructuring and shutdown related costs were capitalized in inventoried costs. As of March 31, 2015, and December 31, 2014, $52 million and $48 million, respectively, of accounts receivable was related to restructuring and shutdown related costs. For each of the three months ended March 31, 2015 and 2014, the Company expensed $14 million of these costs as part of general and administrative expenses. As of March 31, 2015 and December 31, 2014, there were no accrued liabilities for restructuring and shutdown related costs associated with winding down the Avondale facility and no payments or adjustments were made for the three months ended March 31, 2015.
	The following table summarizes the changes in the Company's liability for restructuring and shutdown related costs associated with winding down the Avondale facility for the three months ended March 31, 2014. As of March 31, 2014, these costs were comprised primarily of employee severance and retention payments, as well as incentive bonuses.
	($ in millions)
	Balance as of December 31, 2013	$	14
	Payments	(8		)
	Adjustments	2
	Balance as of March 31, 2014	$	8

Gulfport

Gulfport	3 Months Ended
	Mar. 31, 2015
Restructuring and Related Activities [Abstract]
Gulfport	GULFPORT
	In September 2013, the Company announced the closure of its Gulfport Composite Center of Excellence in Gulfport, Mississippi, part of the Ingalls reportable segment, which it completed in August 2014. In connection with this closure, the Company incurred total costs of approximately $54 million, consisting of approximately $52 million in accelerated depreciation of fixed assets and $2 million in personnel, facility shutdown, and other related costs. In July 2014, the Company received a letter from the Supervisor of Shipbuilding taking exception to the Company's treatment of the Gulfport closure costs. The Company disagrees with the conclusion reached by the Supervisor of Shipbuilding and is currently evaluating its future course of action. The inability to recover Gulfport closure costs could result in a material effect on the Company's consolidated financial position, results of operations, or cash flows. As of March 31, 2015, and December 31, 2014, $35 million and $37 million, respectively, of accounts receivable was related to Gulfport closure costs. In March 2015, the Company sold the Gulfport Composite Center of Excellence to the Mississippi State Port Authority for a price of $32 million, resulting in a gain on disposition of $9 million, recorded as a reduction to contract costs in accordance with the terms of the Company’s contracts with the U.S. Government.

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2015
Acquisitions [Abstract]
Acquisitions [Text Block]	ACQUISITIONS
	On January 30, 2015, the Company acquired, for approximately $6 million in cash, the assets of the Engineering Solutions Division ("ESD") of The Columbia Group. ESD, a leading designer and builder of unmanned underwater vehicles for domestic and international customers, will operate as the Undersea Solutions Group ("USG"). As the U.S. Navy increases employment of unmanned vehicles in both the surface and undersea domains, this acquisition will enhance the Company's ability to compete in these markets. In connection with this acquisition, the Company recorded $5 million of goodwill, all of which was allocated to its Newport News segment, primarily attributed to USG's specialized and skilled employees. See Note 11: Goodwill and Other Purchased Intangible Assets. The assets, liabilities, and results of operations of USG are not material to the Company’s consolidated financial position, results of operations, or cash flows. The Company has not completed the purchase price allocation due to the recent acquisition date and potential adjustments upon finalization of the fair value of the assets acquired and liabilities assumed.
	On May 30, 2014, the Company acquired, for approximately $225 million in cash, net of $5 million of cash acquired, UniversalPegasus International Holdings, Inc. ("UPI"), a provider of project management, engineering and construction management services to the oil and gas industry. The acquisition was consistent with the Company's strategy to utilize its engineering and energy related expertise to expand its position in energy infrastructure markets. In connection with this acquisition, the Company recorded $150 million of goodwill, all of which was allocated to its Other segment, primarily related to the value of UPI’s workforce, and $41 million of intangible assets related to contractual relationships and trade names. See Note 11: Goodwill and Other Purchased Intangible Assets. Adjustments to the fair value of assets acquired and liabilities assumed since the acquisition date were not material and were primarily driven by the finalization of the net working capital adjustment and refinement of fair value calculations for certain assets and liabilities. The Company has not completed the purchase price allocation due to potential adjustments upon finalization of the fair value of certain tax assets and liabilities. The assets, liabilities, and results of operations of UPI are not material to the Company’s consolidated financial position, results of operations, or cash flows.
	On January 2, 2014, the Company acquired, for approximately $47 million in cash, net of $6 million of cash acquired, The S.M. Stoller Corporation, renamed as Stoller Newport News Nuclear, Inc. ("SN3"), a provider of environmental, nuclear, and technical consulting and engineering services to the Department of Energy, Department of Defense, and private sector. The acquisition was consistent with the Company's strategy to utilize its nuclear and energy related expertise developed through its shipbuilding activities to expand its position in the energy marketplace. In connection with this acquisition, the Company recorded $42 million of goodwill, all of which was allocated to its Newport News segment, primarily attributed to SN3's specialized and skilled employees, and $6 million of intangible assets, primarily related to existing contract backlog and trade names. See Note 11: Goodwill and Other Purchased Intangible Assets. The assets, liabilities, and results of operations of SN3 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. 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 price 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 expected to be deductible for tax purposes was $96 million. Pro forma revenues and results of operations have not been provided for these acquisitions as they are not material either individually or in the aggregate.

Stockholders_Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2015
Stockholders' Equity Note [Abstract]
Stockholders' Equity [Text Block]	STOCKHOLDERS' EQUITY
	Treasury Stock - In 2014, the Company's board of directors authorized an increase in the Company's stock repurchase program from $300 million to $600 million and an extension of the term of the program to October 31, 2019. 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, 2015, the Company repurchased 210,240 shares at a cost of $29 million. For the three months ended March 31, 2014, the Company repurchased 247,551 shares at a cost of $25 million, of which approximately $15 million was not yet settled for cash as of March 31, 2014. 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 $0.40 and $0.20 for the three months ended March 31, 2015 and 2014, respectively. The Company paid cash dividends totaling $19 million and $10 million for the three months ended March 31, 2015 and 2014, respectively.
	Accumulated Other Comprehensive Income - Other comprehensive income (loss) refers to gains and losses recorded as an element of stockholders' equity but excluded from net earnings (loss). The accumulated other comprehensive loss as of March 31, 2015 and December 31, 2014, was comprised of unamortized benefit plan costs of $850 million and $864 million, respectively, and other comprehensive income items of $1 million and $2 million, respectively. The changes in accumulated other comprehensive income (loss) by component for the three months ended March 31, 2015 and 2014, were as follows:
	($ in millions)	Benefit Plans			Other			Total
	Balance as of December 31, 2013	$	(523	)	$	2		$	(521	)
	Other comprehensive income (loss) before reclassifications	—			1			1
	Amounts reclassified from accumulated other comprehensive income (loss)
	Amortization of prior service cost (credit)1	(2		)	—			(2		)
	Amortization of net actuarial loss (gain)1	10			—			10
	Tax benefit (expense) for items of other comprehensive income	(3		)	—			(3		)
	Net current period other comprehensive income (loss)	5			1			6
	Balance as of March 31, 2014	$	(518	)	$	3		$	(515	)
	Balance as of December 31, 2014	$	(864	)	$	2		$	(862	)
	Other comprehensive income (loss) before reclassifications	—			(2		)	(2		)
	Amounts reclassified from accumulated other comprehensive income (loss)
	Amortization of net actuarial loss (gain)1	22			—			22
	Tax benefit (expense) for items of other comprehensive income	(8		)	1			(7		)
	Net current period other comprehensive income (loss)	14			(1		)	13
	Balance as of March 31, 2015	$	(850	)	$	1		$	(849	)
	1 These accumulated comprehensive income (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 income (loss) for the three months ended March 31, 2015 and 2014, was $8 million and $3 million, respectively.

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share	EARNINGS PER SHARE
	Basic and diluted earnings per common share were calculated as follows:
		Three Months Ended
		31-Mar
	(in millions, except per share amounts)	2015		2014
	Net earnings (loss)	$	87	$	90
	Weighted-average common shares outstanding	48.4		49.1
	Net dilutive effect of stock options and awards	0.3		0.6
	Dilutive weighted-average common shares outstanding	48.7		49.7
	Earnings (loss) per share - basic	$	1.8	$	1.83
	Earnings (loss) per share - diluted	$	1.79	$	1.81
	The Company's calculation of diluted earnings per common share includes the dilutive effects of the assumed exercise of stock options and vesting of restricted stock based on the treasury stock method. Under this method, the Company has excluded the effects of 0.3 million stock options and 0.8 million Restricted Performance Stock Rights ("RPSRs") from the diluted share amounts presented above for the three months ended March 31, 2015. The amounts presented above for the three months ended March 31, 2014, exclude the impact of 0.5 million stock options, 0.3 million Restricted Stock Rights ("RSRs") and 1.2 million RPSRs under the treasury stock method.

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment Information	SEGMENT INFORMATION
	The Company is organized into three reportable segments: Ingalls, Newport News and Other, consistent with how management makes operating decisions and assesses performance. The Other segment was established in the second quarter of 2014 to account for certain of the Company's non-shipbuilding commercial activities.
	The following table presents segment results for the three months ended March 31, 2015 and 2014:
		Three Months Ended
		31-Mar
	($ in millions)	2015			2014
	Sales and Service Revenues
	Ingalls	$	469		$	547
	Newport News	1,061			1,047
	Other	40			—
	Total sales and service revenues	$	1,570		$	1,594
	Operating Income (Loss)
	Ingalls	$	45		$	43
	Newport News	93			94
	Other	(10		)	—
	Total segment operating income (loss)	128			137
	Non-segment factors affecting operating income (loss)
	FAS/CAS Adjustment	27			22
	Deferred state income taxes	1			—
	Total operating income (loss)	$	156		$	159
	FAS/CAS Adjustment - The FAS/CAS Adjustment reflects the difference between expenses for pension and other postretirement benefits determined in accordance with GAAP and the expenses for these items included in segment operating income in accordance with U.S. Cost Accounting Standards ("CAS").
	Other Financial Information
	The following table presents the Company's assets by segment.
	($ in millions)	March 31			December 31
		2015			2014
	Assets
	Ingalls	$	1,429		$	1,452
	Newport News	3,328			3,155
	Other	201			210
	Corporate	1,361			1,452
	Total assets	$	6,319		$	6,269

Inventoried_Costs_Net

Inventoried Costs, Net	3 Months Ended
	Mar. 31, 2015
Inventory Disclosure [Abstract]
Inventoried Costs, Net	INVENTORIED COSTS, NET
	Inventoried costs were composed of the following:
	($ in millions)	March 31		December 31
		2015		2014
	Production costs of contracts in process	$	241	$	248
	Raw material inventory	95		91
	Total inventoried costs, net	$	336	$	339

Goodwill_and_Other_Purchased_I

Goodwill and Other Purchased Intangible Assets	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Purchased Intangible Assets	GOODWILL AND OTHER PURCHASED 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 value of the Company's reporting units below their carrying value.
	Accumulated goodwill impairment losses as of both March 31, 2015, and December 31, 2014, were $2,802 million. The accumulated goodwill impairment losses for Ingalls as of each of March 31, 2015, and December 31, 2014, were $1,568 million. The accumulated goodwill impairment losses for Newport News as of each of March 31, 2015, and December 31, 2014, were $1,187 million. The accumulated goodwill impairment losses for the Other segment as of each of March 31, 2015, and December 31, 2014, were $47 million.
	For the three months ended March 31, 2015, the Company recorded $5 million of goodwill related to its acquisition of USG. For the three months ended March 31, 2014, the Company recorded $42 million of goodwill related to its acquisition of SN3.
	For the three months ended March 31, 2015, the carrying amounts of goodwill changed as follows:
	($ in millions)	Ingalls			Newport News			Other		Total
	Balance as of December 31, 2014	$	175		$	748		$	103	$	1,026
	Acquisitions	—			5			—		5
	Adjustments	—			—			1		1
	Balance as of March 31, 2015	$	175		$	753		$	104	$	1,032
	Purchased Intangible Assets
	In connection with the UPI purchase in 2014, the Company recorded $41 million of intangible assets pertaining to existing contracts, trademarks, and trade names to be amortized using the pattern of benefits method over a weighted-average life of 11 years. In connection with the SN3 purchase in 2014, the Company recorded $6 million of intangible assets pertaining to existing contract backlog, trademarks, and trade names to be amortized using the pattern of benefits method over a weighted-average life of five years.
	The following table summarizes the Company's aggregate purchased intangible assets, which are primarily program related intangible assets.
	($ in millions)	March 31			December 31
		2015			2014
	Gross carrying amount	$	986		$	986
	Accumulated amortization	(446		)	(439		)
	Net carrying amount	$	540		$	547
	The Company's purchased intangible assets are being amortized on a straight-line basis or a method based on the pattern of benefits. Net intangible assets consist principally of amounts pertaining to nuclear-powered aircraft carrier and submarine program intangibles, with an aggregate weighted-average useful life of 40 years based on the long life cycle of the related programs. Aggregate amortization expense was $7 million and $6 million for the three months ended March 31, 2015 and 2014, respectively.
	The Company expects amortization expense for purchased intangible assets of approximately $26 million in 2015, $25 million in each of the years 2016 and 2017, and $24 million in each of the years 2018 and 2019.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES
	The Company's earnings are principally domestic and its effective tax rates on earnings from operations for the three months ended March 31, 2015 and 2014, were 34.6% and 31.8%, respectively. The higher effective tax rate for the three months ended March 31, 2015, was primarily attributable to the non-recurring tax benefit resulting from the release of uncertain tax positions due to expiration of the statute of limitations during the three months ended March 31, 2014.
	For the three months ended March 31, 2015, the Company's effective tax rate differed from the federal statutory rate primarily as a result of the domestic manufacturing deduction. For the three months ended March 31, 2014, the Company's effective tax rate differed from the federal statutory rate primarily as a result of the domestic manufacturing deduction and a non-recurring tax benefit resulting from the release of uncertain tax positions due to expiration of the statute of limitations.
	Deferred state income taxes reflect the change in deferred state assets and liabilities in the relevant period. These amounts are recorded within operating income, while the current period state income tax expense is charged to contract costs and included in cost of sales and service revenues in segment operating income.
	Net deferred tax assets (liabilities) as presented in the unaudited condensed consolidated statements of financial position were as follows:
	($ in millions)	March 31		December 31
		2015		2014
	Net current deferred tax assets	$	132	$	129
	Net non-current deferred tax assets	203		212
	Total net deferred tax assets	$	335	$	341

Debt

Debt	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt	DEBT
	Long-term debt consisted of the following:
	($ in millions)	March 31		December 31
		2015		2014
	Term loan due March 30, 2016	$	395	$	395
	Senior notes due March 15, 2021, 7.125%	600		600
	Senior notes due December 15, 2021, 5.000%	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
	Total long-term debt	1,700		1,700
	Less current portion	108		108
	Long-term debt, net of current portion	$	1,592	$	1,592
	Credit Facility - In March 2011, the Company entered into the Credit Facility with third-party lenders. The Credit Facility is comprised of a five-year term loan facility of $575 million, which was funded on March 30, 2011, and a revolving credit facility of $650 million, which may be drawn upon during a period of five years from the date of the funding. The revolving credit facility includes a letter of credit subfacility of $350 million and a swingline loan subfacility of $100 million. In November 2013, the Company amended and restated its existing Credit Facility to provide more favorable pricing terms and more flexibility under the Credit Facility’s restricted payment covenants. The term loan and revolving credit facility have a variable interest rate on outstanding borrowings based on the London Interbank Offered Rate ("LIBOR") plus a spread based upon the Company's leverage ratio. As of March 31, 2015, the spread was 1.5% and may vary between 1.5% and 2.5%. The revolving credit facility also has a commitment fee rate on the unutilized balance based on the Company's leverage ratio. As of March 31, 2015, this fee rate was 0.25% and may vary between 0.25% and 0.45%. As of March 31, 2015, approximately $30 million in letters of credit were issued but undrawn, and the remaining $620 million of the revolving credit facility was unutilized.
	The term loan facility requires principal payments in three-month intervals from the funding date. Payments were made in aggregate amounts equal to 5% of the original principal balance during each of the first year and the second year, 10% during the third year, and are expected to be made in aggregate amounts equal to 15% during the fourth year, and 65% during the fifth year of which 5% is payable on each of the first three quarterly payment dates during such year, and the balance is payable on the term maturity date.
	Senior Notes - In March 2011, the Company issued $600 million aggregate principal amount of 6.875% senior notes due March 15, 2018, and $600 million aggregate principal amount of 7.125% senior notes due March 15, 2021. In December 2014, the Company issued $600 million aggregate principal amount of 5.000% senior notes due December 15, 2021. The net proceeds from the issuance of these senior notes were used to repurchase the Company's 6.875% senior notes due March 15, 2018.
	Mississippi Economic Development Revenue Bonds - As of March 31, 2015, the Company had $84 million outstanding under Industrial Revenue Bonds issued by the Mississippi Business Finance Corporation. These bonds accrue interest at a fixed rate of 7.81% and mature in 2024.
	Gulf Opportunity Zone Industrial Development Revenue Bonds - As of March 31, 2015, the Company had $21 million outstanding under Gulf Opportunity Zone Industrial Development Revenue Bonds issued by the Mississippi Business Finance Corporation. These bonds accrue interest at a fixed rate of 4.55% and mature in 2028.
	The Company's debt arrangements contain customary affirmative and negative covenants, including a maximum total leverage ratio and a minimum interest coverage ratio. The Company was in compliance with all debt covenants during the three months ended March 31, 2015.
	The estimated fair value of the Company's total long-term debt, including current portions, as of March 31, 2015 and December 31, 2014, was $1,804 million and $1,779 million, respectively. The fair value of the Company's long-term debt was calculated based on either recent trades of the Company's debt instruments in inactive markets or yields available on debt with substantially similar risks, terms and maturities, which fall within Level 2 under the fair value hierarchy.

Investigations_Claims_and_Liti

Investigations, Claims, and Litigation	3 Months Ended
	Mar. 31, 2015
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 January 2011, the U.S. Department of Justice ("DoJ") first informed the Company through Northrop Grumman of a False Claims Act complaint (the "Complaint") that was filed under seal in the U.S. District Court for the District of Columbia. The redacted copy of the Complaint the Company received alleges that, through largely unspecified fraudulent means, the Company and Northrop Grumman obtained federal funds that were restricted by law for the consequences of Hurricane Katrina, and used those funds to cover costs under certain shipbuilding contracts that were unrelated to Katrina and for which Northrop Grumman and the Company were not entitled to recovery under the contracts. The Complaint seeks monetary damages of at least $835 million, plus penalties, attorneys' fees and other costs of suit. Damages under the False Claims Act may be trebled upon a finding of liability.
	In July 2012, the District Court entered an order permitting the Company to disclose certain information not included in the redacted copy of the Complaint received by the Company, including the date the Complaint was filed, the decision of the DoJ to decline intervention in the case, and the principal parties involved in the case. The Complaint was filed on June 2, 2010, by relators Gerald M. Fisher and Donald C. Holmes. In December 2011, the DoJ filed a Notice of Election to Decline Intervention in the case. As of August 29, 2012, Gerald M. Fisher was no longer a relator in or party to this case. In February 2013, the U.S. District Court for the District of Columbia granted the defendants' motion to transfer venue, and the case was transferred to the U.S. District Court for the Southern District of Mississippi. The Company has filed a motion to dismiss the case and a motion to disqualify relator Holmes, and all other matters are stayed pending resolution of the motion to dismiss.
	Based upon a review to date of the information available to the Company, the Company believes that it has substantive defenses to the allegations in the Complaint, that the claims as set forth in the Complaint evidence a fundamental lack of understanding of the terms and conditions in the Company's shipbuilding contracts, including the post-Katrina modifications to those contracts, and the manner in which the parties performed in connection with the contracts, and that the claims as set forth in the Complaint lack merit. The Company, therefore, believes that the claims as set forth in the Complaint will not result in a material effect on its consolidated financial position, results of operations or cash flows. The Company intends to defend the matter vigorously, but the Company cannot predict what new or revised claims might be asserted or what information might come to light and can, therefore, give no assurances 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.
	In January 2013, the Company disclosed to the DoD, including the U.S. Navy, and the U.S. Department of Homeland Security, including the U.S. Coast Guard, pursuant to the FAR, that it had initiated an internal investigation regarding whether certain employees at Ingalls mischarged time or misstated progress on Navy and Coast Guard contracts. The Company conducted an internal investigation, led by external counsel, and has taken remedial actions, including the termination of employees in instances where the Company believed grounds for termination existed. The Company is providing information regarding its investigation to the relevant government agencies. The Company agreed with the U.S. Navy and U.S. Coast Guard that they would initially withhold $24 million in payments on existing contracts pending receipt of additional information from the Company's internal investigation. The U.S. Navy has reduced its portion of the withhold from $18.2 million to $4.7 million, while expressing its view that the gross amount of potential mischarging incurred by the Navy will likely not exceed $3.1 million. The U.S. Coast Guard informed the Company in June 2014 that it was provisionally reducing its withhold from $5.8 million to $3.6 million. Based on the results of its internal investigation, the Company estimates that the maximum amount of U.S. Navy and Coast Guard mischarging is approximately $4 million.
	The Company is continuing discussions with its U.S. Government customers regarding the potential release of an additional portion of the withheld funds, but the Company cannot predict whether or when these customers will agree to any additional release of the withhold amount. Depending upon the U.S. Government's assessment of the matters under investigation, the Company could be subject to significant civil penalties, criminal fines, and suspension or debarment from U.S. Government contracting. Although the Company does not currently believe that this matter will have a material effect on its financial condition, results of operations or cash flows, the Company cannot predict what new information might come to light in the future and can therefore give no assurances regarding the ultimate outcome of this matter.
	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. Although the Company believes the ultimate resolution of these 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 - 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 and $173 million in damages plus substantial interest and litigation expenses. In July 2014, the Republic filed in the arbitration a statement of defense denying all the Company’s allegations and a counterclaim alleging late redelivery of the frigates, unfinished work and breach of warranty and asserting damages of $61 million plus interest. An arbitration hearing was held in January 2015. No assurances can be provided regarding the ultimate outcome of this matter.
	The Company is party to various claims and legal proceedings that arise in the ordinary course of business. Although the Company believes that the resolution of any of these various claims and legal proceedings 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 these matters.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES
	Contract Performance Contingencies - Contract profit margins may include estimates of revenues not contractually agreed to between the customer and the Company for matters such as settlements in the process of negotiation, contract changes, claims and requests for equitable adjustment for previously unanticipated contract costs. These estimates are based upon management's best assessment of the underlying causal events and circumstances, and are included in determining contract profit margins to the extent of expected recovery based on contractual entitlements and the probability of successful negotiation with the customer. As of March 31, 2015, the recognized amounts related to claims and requests for equitable adjustment are 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 generally strives to limit its exposure under these arrangements to its investment in the arrangement, or to 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. As of March 31, 2015, the Company was not aware of any existing event of default that would require HII to satisfy any of these guarantees.
	Environmental Matters -The estimated cost to complete environmental remediation has been accrued where 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 in remediating contaminated sites. These estimates are reviewed periodically and adjusted to reflect changes in facts and technical and legal circumstances. Management estimates that as of March 31, 2015, the probable future cost for environmental remediation is $2 million, which is accrued in other current liabilities. 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 projects progress 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 standby letters of credit issued by commercial banks and surety bonds issued by insurance companies principally to support the Company's self-insured workers' compensation plans. As of March 31, 2015, the Company had $30 million in standby letters of credit issued but undrawn, as indicated in Note 13: Debt, and $358 million of surety bonds outstanding.
	U.S. Government Claims - From time to time, the U.S. Government advises the Company of claims and penalties concerning certain potential disallowed costs. When such findings are presented, the Company and U.S. Government representatives engage in discussions to enable HII to evaluate the merits of these claims as well as to assess the amounts being claimed. The Company does not believe that the outcome of any such matters will have a material effect on its consolidated financial position, results of operations, or cash flows.

Impacts_From_Hurricanes

Impacts From Hurricanes	3 Months Ended
	Mar. 31, 2015
Extraordinary and Unusual Items [Abstract]
Impacts From Hurricanes	IMPACTS FROM HURRICANES
	In August 2005, the Company's Ingalls operations were significantly impacted by Hurricane Katrina, and the Company's shipyards in Louisiana and Mississippi sustained significant windstorm damage from the hurricane. As a result of the storm, the Company incurred costs to replace or repair destroyed or damaged assets, suffered losses under its contracts, and incurred substantial costs to clean up and recover its operations. At the time of the storm, the Company had an insurance program that provided coverage for, among other things, property damage, business interruption impact on net profitability, and costs associated with clean-up and recovery. The Company recovered a portion of its Hurricane Katrina claim from certain of its participating program insurers in prior periods. In 2013, the Company resolved litigation against its remaining insurer, Factory Mutual Insurance Company ("FM Global"), arising out of a disagreement concerning the coverage of certain losses related to Hurricane Katrina. Under the settlement agreement with FM Global, in the third quarter of 2013 FM Global made a cash payment of $180 million to the Company and the Company agreed to release its claim against FM Global, resulting in a total recovery from the Company's insurers of $677.5 million for its Hurricane Katrina claim. The $180 million was recorded as an insurance recovery gain in operating income in the third quarter of 2013.
	In February 2013, the Company submitted a certified claim requesting a final decision on the allowability and allocability of certain post-Katrina depreciation and other Katrina-related expenses and on the apportionment of insurance proceeds. In October 2013, the Company received a Contracting Officer's Final Decision ("COFD") disallowing certain post-Katrina depreciation costs and other Katrina-related expenses, as well as providing direction on the apportionment of Katrina-related insurance recoveries. Impacted by this decision, the Company’s accounting for hurricane insurance related matters resulted in a reduction in operating income of $116 million. The 2013 financial results reflect disallowances as indicated in the COFD.
	For the year ended December 31, 2013, the Company’s accounting for hurricane related matters, including the insurance recovery gain of $180 million and the $116 million reduction in operating income related to its contracts with the U.S. Government, resulted in a net favorable impact to operating income of $64 million.
	In October 2014, the Company executed a Memorandum of Understanding ("MOU") with the U.S. Navy and U.S. Coast Guard acknowledging the requirements set forth in the COFD. The MOU did not have a material impact on the Company's accounting for hurricane related matters.
	In January 2011, the Company, through a predecessor-in-interest, filed suit in Superior Court in California against Aon Risk Insurance Services West, Inc. ("Aon"), which acted as broker to the predecessor-in-interest in connection with the policy with FM Global, seeking damages for breach of contract, professional negligence and negligent misrepresentation, as well as declaratory relief. Those damages include over $200 million in damages unrecovered from FM Global plus costs, legal fees and expenses incurred in the lawsuit against FM Global, as well as interest. In January 2014, the Company amended its complaint to allege fraud and seek punitive damages. No assurances can be provided as to the ultimate outcome of the matter. If, however, the claims are successful, the potential impact to the Company's consolidated financial position, results of operations and cash flows would be favorable.

Employee_Pension_And_Other_Pos

Employee Pension And Other Postretirement Benefits	3 Months Ended
	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Employee Pension and Other Postretirement Benefits	EMPLOYEE PENSION AND OTHER POSTRETIREMENT BENEFITS
	The Company provides defined benefit pension and postretirement benefit plans and defined contribution pension benefit plans to eligible employees.
	The cost of the Company's defined benefit plans and other postretirement plans for the three months ended March 31, 2015 and 2014, was as follows:
		Three Months Ended
		31-Mar
		Pension Benefits						Other Benefits
	($ in millions)	2015			2014			2015			2014
	Components of Net Periodic Benefit Cost
	Service cost	$	37		$	34		$	3		$	3
	Interest cost	61			61			7			8
	Expected return on plan assets	(88		)	(80		)	—			—
	Amortization of prior service cost (credit)	5			5			(5		)	(7		)
	Amortization of net actuarial loss (gain)	21			10			1			—
	Net periodic benefit cost	$	36		$	30		$	6		$	4
	The Company made the following contributions to its pension and other postretirement plans for the three months ended March 31, 2015 and 2014:
		Three Months Ended
		31-Mar
	($ in millions)	2015			2014
	Pension plans
	Qualified minimum	$	—		$	—
	Discretionary
	Qualified	2			39
	Non-qualified	1			—
	Other benefit plans	8			8
	Total contributions	$	11		$	47
	For the year ending December 31, 2015, the Company expects its cash contributions to its qualified defined benefit pension plans to be $99 million, all of which will be discretionary.

Stock_Compensation_Plans

Stock Compensation Plans	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Compensation Plans	STOCK COMPENSATION PLANS
	During the three months ended March 31, 2015 and 2014, the Company issued new stock awards as follows:
	Restricted Performance Stock Rights - For the three months ended March 31, 2015, the Company granted approximately 0.1 million RPSRs at a weighted average share price of $142.41. These rights are subject to cliff vesting on December 31, 2017. For the three months ended March 31, 2014, the Company granted approximately 0.2 million RPSRs at a weighted average share price of $98.09. These rights are subject to cliff vesting on December 31, 2016. The RPSRs are subject to the achievement of performance-based targets at the end of the respective vesting periods. Based upon the Company's results measured against such targets, between 0% and 200% of the original stated grants are expected to ultimately vest.
	For the three months ended March 31, 2015 and 2014, 0.8 million and 0.9 million stock awards, respectively, vested, of which approximately 0.3 million were transferred to the Company from employees in satisfaction of minimum tax withholding obligations for each of the three months ended March 31, 2015 and 2014.
	The following table summarizes the status of the Company's outstanding stock awards as of March 31, 2015:
		Stock Awards	Weighted-Average		Weighted-Average Remaining Contractual Term
		(in thousands)	Grant Date Fair		(in years)
			Value
	Total stock awards	894	$	75.76	1.2
	The following table summarizes the status of the Company's stock option awards as of March 31, 2015:
		Shares Under	Weighted-		Weighted- Average	Aggregate
		Option	Average		Remaining	Intrinsic
		(in thousands)	Exercise Price		Contractual Term	Value
					(in years)	($ in millions)
	Outstanding and exercisable at March 31, 2015	537	$	33.85	1.4	$	56
	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, 2015 and 2014, of $4 million and $5 million, respectively.
	The Company recognized tax benefits for stock-based compensation in the unaudited condensed consolidated statements of operations for the three months ended March 31, 2015 and 2014, of $1 million and $2 million, respectively.
	Unrecognized Compensation Expense
	As of March 31, 2015, the Company had $1 million of unrecognized compensation expense associated with the RSRs granted in 2015 and 2014, which will be recognized over a period of 1.9 years, and $38 million of unrecognized expense associated with the RPSRs granted in 2015, 2014, and 2013, which will be recognized over a weighted average period of 1.4 years.

Subsidiary_Guarantors

Subsidiary Guarantors	3 Months Ended
	Mar. 31, 2015
Subsidiary Guarantors [Abstract]
Subsidiary Guarantors	SUBSIDIARY GUARANTORS
	Performance of the Company's obligations under the senior notes, 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 domestic subsidiaries that guarantees debt under the Credit Facility (the "Subsidiary Guarantors"). See Note 13: Debt. The guarantees rank equally with all other unsecured and unsubordinated indebtedness of the Subsidiary Guarantors. The Subsidiary Guarantors are each directly or indirectly 100% owned by HII.
	Set forth below are the unaudited condensed consolidating statements of operations and comprehensive income for the three months ended March 31, 2015 and 2014, unaudited condensed consolidating statements of financial position as of March 31, 2015, and December 31, 2014, and the unaudited condensed consolidating statements of cash flows for the three months ended March 31, 2015 and 2014, for HII, its aggregated subsidiary guarantors and its aggregated non-guarantor subsidiaries.
	CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
		Three Months Ended March 31, 2015
	($ in millions)	Huntington Ingalls Industries, Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Sales and service revenues
	Product sales	$	—		$	1,250		$	—		$	—		$	1,250
	Service revenues	—			309			11			—			320
	Total sales and service revenues	—			1,559			11			—			1,570
	Cost of sales and service revenues
	Cost of product sales	—			985			—			—			985
	Cost of service revenues	—			271			9			—			280
	Income (loss) from operating investments, net	—			1			—			—			1
	General and administrative expenses	—			147			3			—			150
	Operating income (loss)	—			157			(1		)	—			156
	Interest expense	(22		)	(1		)	—			—			(23		)
	Equity in earnings (loss) of subsidiaries	101			—			—			(101		)	—
	Earnings (loss) before income taxes	79			156			(1		)	(101		)	133
	Federal income taxes	(8		)	54			—			—			46
	Net earnings (loss)	$	87		$	102		$	(1	)	$	(101	)	$	87
	Other comprehensive income (loss), net of tax	13			15			(2		)	(13		)	13
	Comprehensive income (loss)	$	100		$	117		$	(3	)	$	(114	)	$	100
		Three Months Ended March 31, 2014
	($ in millions)	Huntington Ingalls Industries, Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Sales and service revenues
	Product sales	$	—		$	1,332		$	—		$	—		$	1,332
	Service revenues	—			262			2			(2		)	262
	Total sales and service revenues	—			1,594			2			(2		)	1,594
	Cost of sales and service revenues
	Cost of product sales	—			1,060			—			—			1,060
	Cost of service revenues	—			227			2			(2		)	227
	Income (loss) from operating investments, net	—			2			—			—			2
	General and administrative expenses	—			150			—			—			150
	Operating income (loss)	—			159			—			—			159
	Interest expense	(25		)	(2		)	—			—			(27		)
	Equity in earnings (loss) of subsidiaries	107			—			—			(107		)	—
	Earnings (loss) before income taxes	82			157			—			(107		)	132
	Federal income taxes	(8		)	50			—			—			42
	Net earnings (loss)	$	90		$	107		$	—		$	(107	)	$	90
	Other comprehensive income (loss), net of tax	6			6			—			(6		)	6
	Comprehensive income (loss)	$	96		$	113		$	—		$	(113	)	$	96
	CONDENSED CONSOLIDATING STATEMENTS OF FINANCIAL POSITION
		March 31, 2015
	($ in millions)	Huntington Ingalls Industries, Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Assets
	Current Assets
	Cash and cash equivalents	$	874		$	2		$	28		$	—		$	904
	Accounts receivable, net	—			1,209			10			—			1,219
	Inventoried costs, net	—			336			—			—			336
	Deferred income taxes	—			132			—			—			132
	Prepaid expenses and other current assets	—			36			1			—			37
	Total current assets	874			1,715			39			—			2,628
	Property, plant, and equipment, net	—			1,766			2			—			1,768
	Goodwill	—			1,032			—			—			1,032
	Other purchased intangibles, net	—			540			—			—			540
	Pension plan asset	—			21			—			—			21
	Long-term deferred tax asset	—			203			—			—			203
	Miscellaneous other assets	27			100			—			—			127
	Investment in subsidiaries	3,500			—			—			(3,500		)	—
	Intercompany receivables	—			1,429			—			(1,429		)	—
	Total assets	$	4,401		$	6,806		$	41		$	(4,929	)	$	6,319
	Liabilities and Stockholders' Equity
	Current Liabilities
Trade accounts payable	$	—		$	305		$	2		$	—		$	307
Accrued employees’ compensation	—			182			1			—			183
Current portion of long-term debt	108			—			—			—			108
Current portion of postretirement plan liabilities	—			143			—			—			143
Current portion of workers’ compensation liabilities	—			223			—			—			223
Advance payments and billings in excess of revenues	—			78			—			—			78
Other current liabilities	11			261			18			—			290
Total current liabilities	119			1,192			21			—			1,332
Long-term debt	1,488			104			—			—			1,592
Pension plan liabilities	—			949			—			—			949
Other postretirement plan liabilities	—			509			—			—			509
Workers’ compensation liabilities	—			453			—			—			453
Other long-term liabilities	—			104			—			—			104
Intercompany liabilities	1,414			—			15			(1,429		)	—
Total liabilities	3,021			3,311			36			(1,429		)	4,939
Stockholders’ equity	1,380			3,495			5			(3,500		)	1,380
Total liabilities and stockholders’ equity	$	4,401		$	6,806		$	41		$	(4,929	)	$	6,319
CONDENSED CONSOLIDATING STATEMENTS OF FINANCIAL POSITION
	December 31, 2014
($ in millions)	Huntington Ingalls Industries, Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Assets
Current Assets
Cash and cash equivalents	$	980		$	4		$	6		$	—		$	990
Accounts receivable, net	—			1,022			16			—			1,038
Inventoried costs, net	—			339			—			—			339
Deferred income taxes	—			129			—			—			129
Prepaid expenses and other current assets	1			48			5			(4		)	50
Total current assets	981			1,542			27			(4		)	2,546
Property, plant, and equipment, net	—			1,790			2			—			1,792
Goodwill	—			1,026			—			—			1,026
Other purchased intangibles, net	—			547			—			—			547
Pension plan asset	—			17			—			—			17
Long-term deferred tax assets	—			212			—			—			212
Miscellaneous other assets	30			99			—			—			129
Investment in subsidiaries	3,421			—			—			(3,421		)	—
Intercompany receivables	—			1,469			—			(1,469		)	—
Total assets	$	4,432		$	6,702		$	29		$	(4,894	)	$	6,269
Liabilities and Stockholders' Equity
Current Liabilities
Trade accounts payable	$	—		$	265		$	4		$	—		$	269
Accrued employees’ compensation	—			247			1			—			248
Current portion of long-term debt	108			—			—			—			108
Current portion of postretirement plan liabilities	—			143			—			—			143
Current portion of workers’ compensation liabilities	—			221			—			—			221
Advance payments and billings in excess of revenues	—			74			—			—			74
Other current liabilities	15			234			4			(4		)	249
Total current liabilities	123			1,184			9			(4		)	1,312
Long-term debt	1,488			104			—			—			1,592
Pension plan liabilities	—			939			—			—			939
Other postretirement plan liabilities	—			507			—			—			507
Workers’ compensation liabilities	—			449			—			—			449
Other long-term liabilities	—			105			—			—			105
Intercompany liabilities	1,456			—			13			(1,469		)	—
Total liabilities	3,067			3,288			22			(1,473		)	4,904
Stockholders’ equity	1,365			3,414			7			(3,421		)	1,365
Total liabilities and stockholders’ equity	$	4,432		$	6,702		$	29		$	(4,894	)	$	6,269
CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
	Three Months Ended March 31, 2015
($ in millions)	Huntington Ingalls Industries, Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided by (used in) operating activities	$	(16	)	$	(8	)	$	21		$	—		$	(3	)
Investing Activities
Additions to property, plant, and equipment	—			(19		)	(1		)	—			(20		)
Acquisitions of businesses, net of cash received	—			(6		)	—			—			(6		)
Proceeds from disposition of assets	—			32			—			—			32
Net funding from (to) parent	—			40			2			(42		)	—
Net cash provided by (used in) investing activities	—			47			1			(42		)	6
Financing Activities
Dividends paid	(19		)	—			—			—			(19		)
Repurchases of common stock	(29		)	—			—			—			(29		)
Employee taxes on certain share-based payment arrangements	—			(54		)	—			—			(54		)
Excess tax benefit related to stock-based compensation	—			13			—			—			13
Net funding from (to) subsidiary	(42		)	—			—			42			—
Net cash provided by (used in) financing activities	(90		)	(41		)	—			42			(89		)
Change in cash and cash equivalents	(106		)	(2		)	22			—			(86		)
Cash and cash equivalents, beginning of period	980			4			6			—			990
Cash and cash equivalents, end of period	$	874		$	2		$	28		$	—		$	904
	Three Months Ended March 31, 2014
($ in millions)	Huntington Ingalls Industries, Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net cash provided by (used in) operating activities	$	(36	)	$	(196	)	$	18		$	—		$	(214	)
Investing Activities
Additions to property, plant, and equipment	—			(24		)	—			—			(24		)
Acquisitions of businesses, net of cash received	—			(46		)	—			—			(46		)
Net funding from (to) parent	—			264			—			(264		)	—
Net cash provided by (used in) investing activities	—			194			—			(264		)	(70		)
Financing Activities
Dividends paid	(10		)	—			—			—			(10		)
Repurchases of common stock	(10		)	—			—			—			(10		)
Proceeds from stock option exercises	—			1			—			—			1
Excess tax benefit related to stock-based compensation	—			2			—			—			2
Net funding from (to) subsidiary	(264		)	—			—			264			—
Net cash provided by (used in) financing activities	(284		)	3			—			264			(17		)
Change in cash and cash equivalents	(320		)	1			18			—			(301		)
Cash and cash equivalents, beginning of period	1,042			—			1			—			1,043
Cash and cash equivalents, end of period	$	722		$	1		$	19		$	—		$	742

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2015
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.
	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. These unaudited condensed consolidated financial statements 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, 2014.
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 unaudited condensed consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets and liabilities and the disclosure of contingencies at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period. Estimates have been prepared on the basis of the most current and best available information and actual results could differ materially from those estimates.
	The Bipartisan Budget Act of 2013 established budget top lines and provided sequestration relief for 2014 and 2015. Sequestration remains in effect for 2016 through 2021 and could result in significant decreases in DoD spending that could negatively impact the Company's revenues and its estimated recovery of goodwill and other long-lived assets.
Revenue Recognition Policy	Revenue Recognition - The majority of the Company's business is derived from long-term contracts for the construction of naval vessels, production of goods, and provision of services to the federal government, principally the U.S. Navy. In accounting for these contracts, the Company extensively utilizes the cost-to-cost measure of the percentage-of-completion method of accounting, principally based upon total costs incurred. Under this method, sales, including estimated earned fees or profits, are recorded as costs are incurred, generally based on the percentage that total costs incurred bear to total estimated costs at completion. For certain contracts that provide for deliveries of a substantial number of similar units, sales are accounted for using units of delivery as the basis to measure progress toward completion. Certain contracts contain provisions for price redetermination or for cost and/or performance incentives. Such redetermined amounts or incentives are included in sales when the amounts can reasonably be determined and estimated. Amounts representing contract change orders, claims, requests for equitable adjustment, or limitations in funding are included in sales only when they can be reliably estimated and realization is probable. The Company is accounting for one of its contracts under the percentage-of-completion method based on a zero profit margin and will continue such accounting until results can be estimated more precisely. Revenues related to this contract represent less than 1% of the Company's total revenues for the three months ended March 31, 2015. The Company estimates profit as the difference between total estimated revenues and total estimated cost of a contract and recognizes that profit over the life of the contract based on progress toward completion. If the Company estimates a contract will result in a loss, the full amount of the estimated loss is recognized against income in the period in which the loss is identified. The Company classifies contract revenues as product sales or service revenues depending upon the predominant attributes of the relevant underlying contracts.
	The Company recognizes changes in estimates of contract sales, costs, and profits using the cumulative catch-up method of accounting. This method recognizes in the current period the cumulative effect of the changes on current and prior periods. Accordingly, the effect of the changes on future periods of contract performance is recognized as if the revised estimate had been the original estimate. For the three months ended March 31, 2015 and 2014, net cumulative catch-up adjustments increased operating income by $55 million and $44 million, respectively, and increased diluted earnings per share by $0.73 and $0.58, respectively. No individual adjustment was material to the Company's consolidated statements of operations and comprehensive income in any of these periods.
	The Company also enters into other types of contracts such as certain services or commercial arrangements. For such contracts not associated with the design, development, manufacture, or modification of complex equipment, revenues are recognized upon delivery or as services are rendered once persuasive evidence of an arrangement exists, the price is fixed or determinable, and collectibility is reasonably assured. Costs related to these contracts are expensed as incurred.
Fair Value of Financial Instruments	Fair Value of Financial Instruments - Except for long-term debt and available-for-sale securities held in trust, 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 rabbi trusts established to fund certain non-qualified pension plans. These trusts consist of available-for-sale investments primarily in marketable securities. The assets are held at fair value, and a significant majority of investments held in the trusts are valued within Level 1 of the fair value hierarchy and no material amounts are valued within Level 3 of the fair value hierarchy. The rabbi trusts were valued at $46 million and $45 million as of March 31, 2015, and December 31, 2014, respectively, and are presented within miscellaneous other assets within the unaudited condensed consolidated statements of financial position.

Avondale_Tables

Avondale (Tables)	3 Months Ended
	Mar. 31, 2015
Restructuring and Related Activities [Abstract]
Avondale Restructuring and Shutdown Related Costs	The following table summarizes the changes in the Company's liability for restructuring and shutdown related costs associated with winding down the Avondale facility for the three months ended March 31, 2014. As of March 31, 2014, these costs were comprised primarily of employee severance and retention payments, as well as incentive bonuses.
	($ in millions)
	Balance as of December 31, 2013	$	14
	Payments	(8		)
	Adjustments	2
	Balance as of March 31, 2014	$	8

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2015
Stockholders' Equity Note [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The changes in accumulated other comprehensive income (loss) by component for the three months ended March 31, 2015 and 2014, were as follows:
	($ in millions)	Benefit Plans			Other			Total
	Balance as of December 31, 2013	$	(523	)	$	2		$	(521	)
	Other comprehensive income (loss) before reclassifications	—			1			1
	Amounts reclassified from accumulated other comprehensive income (loss)
	Amortization of prior service cost (credit)1	(2		)	—			(2		)
	Amortization of net actuarial loss (gain)1	10			—			10
	Tax benefit (expense) for items of other comprehensive income	(3		)	—			(3		)
	Net current period other comprehensive income (loss)	5			1			6
	Balance as of March 31, 2014	$	(518	)	$	3		$	(515	)
	Balance as of December 31, 2014	$	(864	)	$	2		$	(862	)
	Other comprehensive income (loss) before reclassifications	—			(2		)	(2		)
	Amounts reclassified from accumulated other comprehensive income (loss)
	Amortization of net actuarial loss (gain)1	22			—			22
	Tax benefit (expense) for items of other comprehensive income	(8		)	1			(7		)
	Net current period other comprehensive income (loss)	14			(1		)	13
	Balance as of March 31, 2015	$	(850	)	$	1		$	(849	)
	1 These accumulated comprehensive income (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 income (loss) for the three months ended March 31, 2015 and 2014, was $8 million and $3 million, respectively.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
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
		31-Mar
	(in millions, except per share amounts)	2015		2014
	Net earnings (loss)	$	87	$	90
	Weighted-average common shares outstanding	48.4		49.1
	Net dilutive effect of stock options and awards	0.3		0.6
	Dilutive weighted-average common shares outstanding	48.7		49.7
	Earnings (loss) per share - basic	$	1.8	$	1.83
	Earnings (loss) per share - diluted	$	1.79	$	1.81

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment operating results	The following table presents segment results for the three months ended March 31, 2015 and 2014:
		Three Months Ended
		31-Mar
	($ in millions)	2015			2014
	Sales and Service Revenues
	Ingalls	$	469		$	547
	Newport News	1,061			1,047
	Other	40			—
	Total sales and service revenues	$	1,570		$	1,594
	Operating Income (Loss)
	Ingalls	$	45		$	43
	Newport News	93			94
	Other	(10		)	—
	Total segment operating income (loss)	128			137
	Non-segment factors affecting operating income (loss)
	FAS/CAS Adjustment	27			22
	Deferred state income taxes	1			—
	Total operating income (loss)	$	156		$	159
Segment assets	The following table presents the Company's assets by segment.
	($ in millions)	March 31			December 31
		2015			2014
	Assets
	Ingalls	$	1,429		$	1,452
	Newport News	3,328			3,155
	Other	201			210
	Corporate	1,361			1,452
	Total assets	$	6,319		$	6,269

Inventoried_Costs_Net_Tables

Inventoried Costs, Net (Tables)	3 Months Ended
	Mar. 31, 2015
Inventory Disclosure [Abstract]
Inventoried costs, net	Inventoried costs were composed of the following:
	($ in millions)	March 31		December 31
		2015		2014
	Production costs of contracts in process	$	241	$	248
	Raw material inventory	95		91
	Total inventoried costs, net	$	336	$	339

Goodwill_and_Other_Purchased_I1

Goodwill and Other Purchased Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Change in Carrying Amount of Goodwill	For the three months ended March 31, 2015, the carrying amounts of goodwill changed as follows:
	($ in millions)	Ingalls			Newport News			Other		Total
	Balance as of December 31, 2014	$	175		$	748		$	103	$	1,026
	Acquisitions	—			5			—		5
	Adjustments	—			—			1		1
	Balance as of March 31, 2015	$	175		$	753		$	104	$	1,032
Purchased Intangible Assets	The following table summarizes the Company's aggregate purchased intangible assets, which are primarily program related intangible assets.
	($ in millions)	March 31			December 31
		2015			2014
	Gross carrying amount	$	986		$	986
	Accumulated amortization	(446		)	(439		)
	Net carrying amount	$	540		$	547

Income_Taxes_Tables

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Net Deferred Tax Assets	Net deferred tax assets (liabilities) as presented in the unaudited condensed consolidated statements of financial position were as follows:
	($ in millions)	March 31		December 31
		2015		2014
	Net current deferred tax assets	$	132	$	129
	Net non-current deferred tax assets	203		212
	Total net deferred tax assets	$	335	$	341

Debt_Tables

Debt (Tables)	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Schedule of Long-term Debt	Long-term debt consisted of the following:
	($ in millions)	March 31		December 31
		2015		2014
	Term loan due March 30, 2016	$	395	$	395
	Senior notes due March 15, 2021, 7.125%	600		600
	Senior notes due December 15, 2021, 5.000%	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
	Total long-term debt	1,700		1,700
	Less current portion	108		108
	Long-term debt, net of current portion	$	1,592	$	1,592

Recovered_Sheet1

Employee Pension and Other Postretirement Benefits (Tables)	3 Months Ended
	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Schedule of Net Benefit Costs	The cost of the Company's defined benefit plans and other postretirement plans for the three months ended March 31, 2015 and 2014, was as follows:
		Three Months Ended
		31-Mar
		Pension Benefits						Other Benefits
	($ in millions)	2015			2014			2015			2014
	Components of Net Periodic Benefit Cost
	Service cost	$	37		$	34		$	3		$	3
	Interest cost	61			61			7			8
	Expected return on plan assets	(88		)	(80		)	—			—
	Amortization of prior service cost (credit)	5			5			(5		)	(7		)
	Amortization of net actuarial loss (gain)	21			10			1			—
	Net periodic benefit cost	$	36		$	30		$	6		$	4
Schedule of Defined Benefit Plans Disclosures, Cash Contributions	The Company made the following contributions to its pension and other postretirement plans for the three months ended March 31, 2015 and 2014:
		Three Months Ended
		31-Mar
	($ in millions)	2015			2014
	Pension plans
	Qualified minimum	$	—		$	—
	Discretionary
	Qualified	2			39
	Non-qualified	1			—
	Other benefit plans	8			8
	Total contributions	$	11		$	47

Stock_Compensation_Plans_Table

Stock Compensation Plans (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Status of Stock Awards	The following table summarizes the status of the Company's outstanding stock awards as of March 31, 2015:
		Stock Awards	Weighted-Average		Weighted-Average Remaining Contractual Term
		(in thousands)	Grant Date Fair		(in years)
			Value
	Total stock awards	894	$	75.76	1.2
Schedule of Status of Stock Option Awards	The following table summarizes the status of the Company's stock option awards as of March 31, 2015:
		Shares Under	Weighted-		Weighted- Average	Aggregate
		Option	Average		Remaining	Intrinsic
		(in thousands)	Exercise Price		Contractual Term	Value
					(in years)	($ in millions)
	Outstanding and exercisable at March 31, 2015	537	$	33.85	1.4	$	56

Subsidiary_Guarantors_Tables

Subsidiary Guarantors (Tables)	3 Months Ended
	Mar. 31, 2015
Subsidiary Guarantors [Abstract]
Schedule of Condensed Consolidating Statements of Operations and Comprehensive Income	CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
		Three Months Ended March 31, 2015
	($ in millions)	Huntington Ingalls Industries, Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Sales and service revenues
	Product sales	$	—		$	1,250		$	—		$	—		$	1,250
	Service revenues	—			309			11			—			320
	Total sales and service revenues	—			1,559			11			—			1,570
	Cost of sales and service revenues
	Cost of product sales	—			985			—			—			985
	Cost of service revenues	—			271			9			—			280
	Income (loss) from operating investments, net	—			1			—			—			1
	General and administrative expenses	—			147			3			—			150
	Operating income (loss)	—			157			(1		)	—			156
	Interest expense	(22		)	(1		)	—			—			(23		)
	Equity in earnings (loss) of subsidiaries	101			—			—			(101		)	—
	Earnings (loss) before income taxes	79			156			(1		)	(101		)	133
	Federal income taxes	(8		)	54			—			—			46
	Net earnings (loss)	$	87		$	102		$	(1	)	$	(101	)	$	87
	Other comprehensive income (loss), net of tax	13			15			(2		)	(13		)	13
	Comprehensive income (loss)	$	100		$	117		$	(3	)	$	(114	)	$	100
		Three Months Ended March 31, 2014
	($ in millions)	Huntington Ingalls Industries, Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Sales and service revenues
	Product sales	$	—		$	1,332		$	—		$	—		$	1,332
	Service revenues	—			262			2			(2		)	262
	Total sales and service revenues	—			1,594			2			(2		)	1,594
	Cost of sales and service revenues
	Cost of product sales	—			1,060			—			—			1,060
	Cost of service revenues	—			227			2			(2		)	227
	Income (loss) from operating investments, net	—			2			—			—			2
	General and administrative expenses	—			150			—			—			150
	Operating income (loss)	—			159			—			—			159
	Interest expense	(25		)	(2		)	—			—			(27		)
	Equity in earnings (loss) of subsidiaries	107			—			—			(107		)	—
	Earnings (loss) before income taxes	82			157			—			(107		)	132
	Federal income taxes	(8		)	50			—			—			42
	Net earnings (loss)	$	90		$	107		$	—		$	(107	)	$	90
	Other comprehensive income (loss), net of tax	6			6			—			(6		)	6
	Comprehensive income (loss)	$	96		$	113		$	—		$	(113	)	$	96
Schedule of Condensed Consolidating Statement of Financial Position	CONDENSED CONSOLIDATING STATEMENTS OF FINANCIAL POSITION
		March 31, 2015
	($ in millions)	Huntington Ingalls Industries, Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Assets
	Current Assets
	Cash and cash equivalents	$	874		$	2		$	28		$	—		$	904
	Accounts receivable, net	—			1,209			10			—			1,219
	Inventoried costs, net	—			336			—			—			336
	Deferred income taxes	—			132			—			—			132
	Prepaid expenses and other current assets	—			36			1			—			37
	Total current assets	874			1,715			39			—			2,628
	Property, plant, and equipment, net	—			1,766			2			—			1,768
	Goodwill	—			1,032			—			—			1,032
	Other purchased intangibles, net	—			540			—			—			540
	Pension plan asset	—			21			—			—			21
	Long-term deferred tax asset	—			203			—			—			203
	Miscellaneous other assets	27			100			—			—			127
	Investment in subsidiaries	3,500			—			—			(3,500		)	—
	Intercompany receivables	—			1,429			—			(1,429		)	—
	Total assets	$	4,401		$	6,806		$	41		$	(4,929	)	$	6,319
	Liabilities and Stockholders' Equity
	Current Liabilities
	Trade accounts payable	$	—		$	305		$	2		$	—		$	307
	Accrued employees’ compensation	—			182			1			—			183
	Current portion of long-term debt	108			—			—			—			108
	Current portion of postretirement plan liabilities	—			143			—			—			143
	Current portion of workers’ compensation liabilities	—			223			—			—			223
	Advance payments and billings in excess of revenues	—			78			—			—			78
	Other current liabilities	11			261			18			—			290
	Total current liabilities	119			1,192			21			—			1,332
	Long-term debt	1,488			104			—			—			1,592
	Pension plan liabilities	—			949			—			—			949
	Other postretirement plan liabilities	—			509			—			—			509
	Workers’ compensation liabilities	—			453			—			—			453
	Other long-term liabilities	—			104			—			—			104
	Intercompany liabilities	1,414			—			15			(1,429		)	—
	Total liabilities	3,021			3,311			36			(1,429		)	4,939
	Stockholders’ equity	1,380			3,495			5			(3,500		)	1,380
	Total liabilities and stockholders’ equity	$	4,401		$	6,806		$	41		$	(4,929	)	$	6,319
	CONDENSED CONSOLIDATING STATEMENTS OF FINANCIAL POSITION
		December 31, 2014
	($ in millions)	Huntington Ingalls Industries, Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Assets
	Current Assets
	Cash and cash equivalents	$	980		$	4		$	6		$	—		$	990
	Accounts receivable, net	—			1,022			16			—			1,038
	Inventoried costs, net	—			339			—			—			339
	Deferred income taxes	—			129			—			—			129
	Prepaid expenses and other current assets	1			48			5			(4		)	50
	Total current assets	981			1,542			27			(4		)	2,546
	Property, plant, and equipment, net	—			1,790			2			—			1,792
	Goodwill	—			1,026			—			—			1,026
	Other purchased intangibles, net	—			547			—			—			547
	Pension plan asset	—			17			—			—			17
	Long-term deferred tax assets	—			212			—			—			212
	Miscellaneous other assets	30			99			—			—			129
	Investment in subsidiaries	3,421			—			—			(3,421		)	—
	Intercompany receivables	—			1,469			—			(1,469		)	—
	Total assets	$	4,432		$	6,702		$	29		$	(4,894	)	$	6,269
	Liabilities and Stockholders' Equity
	Current Liabilities
	Trade accounts payable	$	—		$	265		$	4		$	—		$	269
	Accrued employees’ compensation	—			247			1			—			248
	Current portion of long-term debt	108			—			—			—			108
Current portion of postretirement plan liabilities	—			143			—			—			143
Current portion of workers’ compensation liabilities	—			221			—			—			221
Advance payments and billings in excess of revenues	—			74			—			—			74
Other current liabilities	15			234			4			(4		)	249
Total current liabilities	123			1,184			9			(4		)	1,312
Long-term debt	1,488			104			—			—			1,592
Pension plan liabilities	—			939			—			—			939
Other postretirement plan liabilities	—			507			—			—			507
Workers’ compensation liabilities	—			449			—			—			449
Other long-term liabilities	—			105			—			—			105
Intercompany liabilities	1,456			—			13			(1,469		)	—
Total liabilities	3,067			3,288			22			(1,473		)	4,904
Stockholders’ equity	1,365			3,414			7			(3,421		)	1,365
Total liabilities and stockholders’ equity	$	4,432		$	6,702		$	29		$	(4,894	)	$	6,269
Schedule of Condensed Consolidating Statements of Cash Flows	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS
		Three Months Ended March 31, 2015
	($ in millions)	Huntington Ingalls Industries, Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Net cash provided by (used in) operating activities	$	(16	)	$	(8	)	$	21		$	—		$	(3	)
	Investing Activities
	Additions to property, plant, and equipment	—			(19		)	(1		)	—			(20		)
	Acquisitions of businesses, net of cash received	—			(6		)	—			—			(6		)
	Proceeds from disposition of assets	—			32			—			—			32
	Net funding from (to) parent	—			40			2			(42		)	—
	Net cash provided by (used in) investing activities	—			47			1			(42		)	6
	Financing Activities
	Dividends paid	(19		)	—			—			—			(19		)
	Repurchases of common stock	(29		)	—			—			—			(29		)
	Employee taxes on certain share-based payment arrangements	—			(54		)	—			—			(54		)
	Excess tax benefit related to stock-based compensation	—			13			—			—			13
	Net funding from (to) subsidiary	(42		)	—			—			42			—
	Net cash provided by (used in) financing activities	(90		)	(41		)	—			42			(89		)
	Change in cash and cash equivalents	(106		)	(2		)	22			—			(86		)
	Cash and cash equivalents, beginning of period	980			4			6			—			990
	Cash and cash equivalents, end of period	$	874		$	2		$	28		$	—		$	904
		Three Months Ended March 31, 2014
	($ in millions)	Huntington Ingalls Industries, Inc.			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Net cash provided by (used in) operating activities	$	(36	)	$	(196	)	$	18		$	—		$	(214	)
	Investing Activities
	Additions to property, plant, and equipment	—			(24		)	—			—			(24		)
	Acquisitions of businesses, net of cash received	—			(46		)	—			—			(46		)
	Net funding from (to) parent	—			264			—			(264		)	—
	Net cash provided by (used in) investing activities	—			194			—			(264		)	(70		)
	Financing Activities
	Dividends paid	(10		)	—			—			—			(10		)
	Repurchases of common stock	(10		)	—			—			—			(10		)
	Proceeds from stock option exercises	—			1			—			—			1
	Excess tax benefit related to stock-based compensation	—			2			—			—			2
	Net funding from (to) subsidiary	(264		)	—			—			264			—
	Net cash provided by (used in) financing activities	(284		)	3			—			264			(17		)
	Change in cash and cash equivalents	(320		)	1			18			—			(301		)
	Cash and cash equivalents, beginning of period	1,042			—			1			—			1,043
	Cash and cash equivalents, end of period	$	722		$	1		$	19		$	—		$	742

Description_of_Business_Narrat

Description of Business (Narrative) (Details)	3 Months Ended
	Mar. 31, 2015
	segments
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating segments	3

Basis_of_Presentation_Narrativ

Basis of Presentation (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Assets held in rabbi trusts	46	$45
Zero profit margin contracts [Member] | Sales Revenue, Net [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	1.00%

Change_in_Accounting_Estimate_

Change in Accounting Estimate (Narrative) (Details) (Contracts Accounted for under Percentage of Completion, USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Contracts Accounted for under Percentage of Completion
Change in Accounting Estimate
Increase (decrease) in operating income due to net cumulative catch-up adjustments	$55	$44
Increase (decrease) in diluted earnings per share due to net cumulative catch-up adjustments	$0.73	$0.58

Avondale_Narrative_Details

Avondale (Narrative) (Details) (Facility closing, Avondale Wind Down, USD $)	3 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2010	Dec. 31, 2014
Facility closing | Avondale Wind Down
Restructuring Cost and Reserve
Estimated total restructuring costs	$287
Estimated total costs, initial estimate			310
Amount in question by DCAA			25
Amount in question by DCAA, percent of total submitted			8.00%
Restructuring costs capitalized in inventory	203			212
Accounts receivable related to restructuring	52			48
Restructuring costs amortized	$14	$14

Avondale_Restructuring_and_Shu

Avondale Restructuring and Shutdown Related Costs (Table) (Details) (Compensation, Avondale Wind Down, USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Compensation | Avondale Wind Down
Restructuring Reserve [Roll Forward]
Beginning balance	$14
Payments	-8
Adjustments	2
Ending balance	$8

Gulfport_Narrative_Details

Gulfport (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve
Proceeds from disposition of assets	$32
Gain on Disposition	9
Facility closing | Gulfport
Restructuring Cost and Reserve
Total restructuring costs	54
Accelerated depreciation cost	52
Other restructuring cost	2
Accounts receivable related to restructuring	$35	$37

Acquisitions_Narrative_Details

Acquisitions (Narrative) (Details) (USD $)	3 Months Ended	6 Months Ended	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014
Business Acquisition [Line Items]
Goodwill arising from acquisitions	$5
Goodwill related to acquisitions expected to be deductible for tax purposes	96
Undersea Solutions Group [Member]
Business Acquisition [Line Items]
Initial aggregate purchase price	6
Goodwill arising from acquisitions	5
UniversalPegasus International [Member]
Business Acquisition [Line Items]
Initial aggregate purchase price		225
Cash acquired		5
Goodwill arising from acquisitions		150
Aggregate amount of finite-lived intangibles arising from acquisitions		41
The S.M. Stoller Corporation
Business Acquisition [Line Items]
Initial aggregate purchase price			47
Cash acquired			6
Goodwill arising from acquisitions			42
Aggregate amount of finite-lived intangibles arising from acquisitions			$6

Stockholders_Equity_Narrative_

Stockholders' Equity (Narrative) (Details) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Stockholders' Equity [Line Items]
Amount authorized for stock repurchase program			$600	$300
Repurchased shares of treasury stock	210,240	247,551
Treasury stock activity	29	25
Treasury Stock, Value Acquired, Not Yet Settled for Cash		15
Dividends declared per share	$0.40	$0.20
Dividends paid	19	10
Accumulated other comprehensive income (loss)	-849	-515	-862	-521
Benefit Plans
Stockholders' Equity [Line Items]
Accumulated other comprehensive income (loss)	-850	-518	-864	-523
Other
Stockholders' Equity [Line Items]
Accumulated other comprehensive income (loss)	$1	$3	$2	$2

Stockholders_Equity_Accumulate

Stockholders' Equity Accumulated Other Comprehensive Income (Loss) (Table) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning	($862)		($521)
Other comprehensive income (loss) before reclassifications	-2		1
Amortization of prior service cost (credit)			-2	[1]
Amortization of net actuarial loss (gain)	22	[1]	10	[1]
Tax benefit (expense) for items of other comprehensive income	-7		-3
Other comprehensive income (loss), net of tax	13		6
Balance, ending	-849		-515
Income tax expense (benefit)	46		42
Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning	-864		-523
Amortization of prior service cost (credit)			-2	[1]
Amortization of net actuarial loss (gain)	22	[1]	10	[1]
Tax benefit (expense) for items of other comprehensive income	-8		-3
Other comprehensive income (loss), net of tax	14		5
Balance, ending	-850		-518
Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning	2		2
Other comprehensive income (loss) before reclassifications	-2		1
Tax benefit (expense) for items of other comprehensive income	1
Other comprehensive income (loss), net of tax	-1		1
Balance, ending	1		3
Reclassification out of AOCI
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense (benefit)	($8)		($3)
[1]	These accumulated comprehensive income (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 income (loss) for the three months ended MarchB 31, 2015 and 2014, was $8 million and $3 million, respectively.

Basic_and_Diluted_Earnings_Per

Basic and Diluted Earnings Per Share (Table) (Details) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share, Basic and Diluted [Abstract]
Net earnings (loss)	$87	$90
Weighted-average common shares outstanding (in shares)	48.4	49.1
Net dilutive effect of stock options and awards (in shares)	0.3	0.6
Dilutive weighted-average common shares outstanding (in shares)	48.7	49.7
Earnings (loss) per share - basic (in dollars per share)	$1.80	$1.83
Earnings (loss) per share - diluted (in dollars per share)	$1.79	$1.81

Earnings_Per_Share_Narrative_D

Earnings Per Share (Narrative) (Details)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share
Number of shares from stock awards excluded from computation of earnings per share	0.3	0.5
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	0.8	1.2
Restricted stock rights
Antidilutive Securities Excluded from Computation of Earnings Per Share
Number of shares from stock awards excluded from computation of earnings per share		0.3

Segment_Information_Narrative_

Segment Information (Narrative) (Details)	3 Months Ended
	Mar. 31, 2015
	segments
Segment Reporting [Abstract]
Number of reportable segments	3

Segment_Operating_Results_Tabl

Segment Operating Results (Table) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Sales and Service Revenues
Sales and service revenue	$1,570	$1,594
Operating Income (Loss)
Operating income (loss)	156	159
Operating Segments
Operating Income (Loss)
Operating income (loss)	128	137
Ingalls
Sales and Service Revenues
Sales and service revenue	469	547
Operating Income (Loss)
Operating income (loss)	45	43
Newport News
Sales and Service Revenues
Sales and service revenue	1,061	1,047
Operating Income (Loss)
Operating income (loss)	93	94
Other segment
Sales and Service Revenues
Sales and service revenue	40
Operating Income (Loss)
Operating income (loss)	-10
Non-segment factors affecting operating income (loss)
Non-segment factors affecting operating income (loss)
FAS/CAS Adjustment	27	22
Deferred state income taxes	$1

Segment_Assets_Table_Details

Segment Assets (Table) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Segment Reporting Information
Assets	$6,319	$6,269
Ingalls
Segment Reporting Information
Assets	1,429	1,452
Newport News
Segment Reporting Information
Assets	3,328	3,155
Other segment
Segment Reporting Information
Assets	201	210
Corporate
Segment Reporting Information
Assets	$1,361	$1,452

Inventoried_Costs_Net_Table_De

Inventoried Costs, Net (Table) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Inventory Disclosure [Abstract]
Production costs of contracts in process	$241	$248
Raw material inventory	95	91
Total inventoried costs, net	$336	$339

Goodwill_Narrative_Details

Goodwill (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Jun. 30, 2014	Dec. 31, 2014
Goodwill
Accumulated goodwill impairment losses	$2,802			$2,802
Goodwill arising from acquisitions	5
Ingalls
Goodwill
Accumulated goodwill impairment losses	1,568			1,568
Newport News
Goodwill
Accumulated goodwill impairment losses	1,187			1,187
Goodwill arising from acquisitions	5
Other segment
Goodwill
Accumulated goodwill impairment losses	47			47
Undersea Solutions Group [Member]
Goodwill
Goodwill arising from acquisitions	5
The S.M. Stoller Corporation
Goodwill
Goodwill arising from acquisitions		42
UniversalPegasus International [Member]
Goodwill
Goodwill arising from acquisitions			$150

Change_in_Carrying_Amount_of_G

Change in Carrying Amount of Goodwill (Table) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Goodwill [Roll Forward]
Goodwill beginning balance	$1,026
Goodwill, acquisitions	5
Goodwill, adjustments	1
Goodwill ending balance	1,032
Ingalls
Goodwill [Roll Forward]
Goodwill beginning balance	175
Goodwill, adjustments	0
Goodwill ending balance	175
Newport News
Goodwill [Roll Forward]
Goodwill beginning balance	748
Goodwill, acquisitions	5
Goodwill ending balance	753
Other segment
Goodwill [Roll Forward]
Goodwill beginning balance	103
Goodwill, adjustments	1
Goodwill ending balance	$104

Purchased_Intangible_Assets_Na

Purchased Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Jun. 30, 2014
Expected amortization for purchased intangible assets:
Expected amortization, 2015	$26
Expected amortization, 2016	25
Expected amortization, 2017	25
Expected amortization, 2018	24
Expected amortization, 2019	24
Acquired Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	40 years
Amortization of purchased intangibles	7	6
The S.M. Stoller Corporation
Acquired Finite-Lived Intangible Assets [Line Items]
Aggregate amount of finite-lived intangibles arising from acquisitions		6
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		5 years
UniversalPegasus International [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Aggregate amount of finite-lived intangibles arising from acquisitions			$41
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			11 years

Purchased_Intangible_Assets_Ta

Purchased Intangible Assets (Table) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$986	$986
Accumulated amortization	-446	-439
Net carrying amount	$540	$547

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Effective income tax rate	34.60%	31.80%

Net_Deferred_Tax_Assets_Table_

Net Deferred Tax Assets (Table) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Net deferred tax assets presented:
Net current deferred tax assets	$132	$129
Net non-current deferred tax assets	203	212
Total net deferred tax assets	$335	$341

Schedule_of_Longterm_debt_Tabl

Schedule of Long-term debt (Table) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Debt Instrument [Line Items]
Long-term debt	$1,700	$1,700
Less current portion	108	108
Long-term debt, net of current portion	1,592	1,592
Loans Payable [Member] | Term Loan Due March 30, 2016
Debt Instrument [Line Items]
Long-term debt	395	395
Senior Notes | Senior Notes Due March 15, 2021, 7.125%
Debt Instrument [Line Items]
Long-term debt	600	600
Senior Notes | Senior notes due December 15, 2021, 5.000%
Debt Instrument [Line Items]
Long-term debt	600	600
Bonds | Mississippi Economic Development Revenue Bonds Due May 1, 2024, 7.81%
Debt Instrument [Line Items]
Long-term debt	84	84
Bonds | Gulf Opportunity Zone Industrial Development Revenue Bonds Due December 1, 2028, 4.55%
Debt Instrument [Line Items]
Long-term debt	$21	$21

Credit_Facility_Narrative_Deta

Credit Facility (Narrative) (Details) (HII Credit Facility, USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2011	Mar. 30, 2011
Term Loan Due March 30, 2016
Credit Facility
Debt instrument, face amount			$575
Debt Instrument, Contractual Term		5 years
Debt Instrument, Description of Variable Rate Basis	LIBOR
Amortization expense as a percentage of balance
Amortization of term loan, year one	5.00%
Amortization of term loan, year two	5.00%
Amortization of term loan, year three	10.00%
Amortization of term loan, year four	15.00%
Amortization of term loan, year five	65.00%
First three quarterly payments during year 5	5.00%
Term Loan Due March 30, 2016 | London Interbank Offered Rate (LIBOR) [Member]
Credit Facility
Spread on variable rate	1.50%
Term Loan Due March 30, 2016 | London Interbank Offered Rate (LIBOR) [Member] | Minimum
Credit Facility
Spread on variable rate	1.50%
Term Loan Due March 30, 2016 | London Interbank Offered Rate (LIBOR) [Member] | Maximum
Credit Facility
Spread on variable rate	2.50%
Revolving Credit Facility
Credit Facility
Credit facility revolver			650
Remaining unutilized amount	620
Debt Instrument, Contractual Term		5 years
Debt Instrument, Description of Variable Rate Basis	LIBOR
Revolving Credit Facility | London Interbank Offered Rate (LIBOR) [Member]
Credit Facility
Spread on variable rate	1.50%
Revolving Credit Facility | London Interbank Offered Rate (LIBOR) [Member] | Minimum
Credit Facility
Spread on variable rate	1.50%
Revolving Credit Facility | London Interbank Offered Rate (LIBOR) [Member] | Maximum
Credit Facility
Spread on variable rate	2.50%
Revolving Credit Facility | Base Rate [Member]
Credit Facility
Commitment fee, based on unused capacity	0.25%
Revolving Credit Facility | Base Rate [Member] | Minimum
Credit Facility
Commitment fee, based on unused capacity	0.25%
Revolving Credit Facility | Base Rate [Member] | Maximum
Credit Facility
Commitment fee, based on unused capacity	0.45%
Letter of Credit
Credit Facility
Credit facility revolver			350
Swingline Loan Subfacility
Credit Facility
Credit facility revolver			100
Standby Letters of Credit
Credit Facility
Letters of credit issued but undrawn	30

Debt_Senior_Note_Narrative_Det

Debt Senior Note (Narrative) (Details) (Senior Notes, USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Senior Notes Due March 15, 2018, 6.875%
Debt Instrument [Line Items]
Debt instrument, face amount	$600
Debt Instrument, Interest Rate, Stated Percentage	6.88%	6.88%
Senior Notes Due March 15, 2021, 7.125%
Debt Instrument [Line Items]
Debt instrument, face amount	600
Debt Instrument, Interest Rate, Stated Percentage	7.13%	7.13%
Senior notes due December 15, 2021, 5.000%
Debt Instrument [Line Items]
Debt instrument, face amount	$600
Debt Instrument, Interest Rate, Stated Percentage	5.00%

Debt_Revenue_Bonds_Narrative_D

Debt Revenue Bonds (Narrative) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Debt Instrument [Line Items]
Long-term Debt	$1,700	$1,700
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%

Debt_Long_Term_Debt_Narrative_

Debt Long Term Debt (Narrative) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Debt Instrument [Line Items]
Long-term Debt, Fair Value	$1,804	$1,779

Investigations_Claims_and_Liti1

Investigations, Claims, and Litigation (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
False Claims Act | Minimum
Loss Contingencies
Monetary damages sought	$835
Bolivarian Republic of Venezuela
Loss Contingencies
Monetary damages sought	61
Arbitral statement claim	173
Ingalls Timecharging Investigation
Loss Contingencies
Contract receivable retainage initially withheld	24
Estimate of misallocated costs and overstated progress	4
United States Navy | Ingalls Timecharging Investigation
Loss Contingencies
Contract receivable retainage initially withheld	18.2
Contract receivable retainage	4.7
Customer estimate of misallocated costs and overstated progress	3.1
United States Coast Guard | Ingalls Timecharging Investigation
Loss Contingencies
Contract receivable retainage initially withheld	5.8
Contract receivable retainage	$3.60

Commitments_and_Contingencies_

Commitments and Contingencies (Narrative) (Details) (USD $)	Mar. 31, 2015
In Millions, unless otherwise specified
Commitments and Contingencies
Probable future cost for envionmental remediation	$2
Surety Bonds Outstanding
Commitments and Contingencies
Surety bonds outstanding	358
HII Credit Facility | Letters of Credit
Commitments and Contingencies
Letters of credit issued but undrawn	$30

Impacts_from_Hurricanes_Narrat

Impacts from Hurricanes (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2013
Business Interruption Loss
Insurance recoveries	$677.50
Effect of hurricane insurance related matters on operating income related to contracts		-116
Net effect of hurricane insurance related matters on operating income		64
Factory Mutual Insurance Company
Business Interruption Loss
Insurance recoveries		180
Impact to operating income from insurance recoveries		180
Minimum | Aon Risk Insurance Services West, Inc.
Business Interruption Loss
Monetary damages sought	$200

Employee_Pension_and_Other_Pos1

Employee Pension and Other Postretirement Benefits Net Benefit Costs (Table) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Pension Benefits
Defined Benefit Plan Disclosure
Service cost	$37	$34
Interest cost	61	61
Expected return on plan assets	-88	-80
Amortization of prior service cost (credit)	5	5
Amortization of net actuarial loss (gain)	21	10
Net periodic benefit cost	36	30
Other Benefits
Defined Benefit Plan Disclosure
Service cost	3	3
Interest cost	7	8
Amortization of prior service cost (credit)	-5	-7
Amortization of net actuarial loss (gain)	1
Net periodic benefit cost	$6	$4

Employee_Pension_and_Other_Pos2

Employee Pension and Other Postretirement Benefits Cash Contributions (Table) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Defined Benefit Plan Disclosure
Other benefit plans	$8	$8
Total contributions	11	47
Discretionary Contribution | Qualified
Defined Benefit Plan Disclosure
Pension contributions	2	39
Discretionary Contribution | Non-qualified
Defined Benefit Plan Disclosure
Pension contributions	$1

Employee_Pension_and_Other_Pos3

Employee Pension and Other Postretirement Benefits Employee Pension and Other Postretirement Benefits (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year	$99

Stock_Compensation_Plans_Narra

Stock Compensation Plans (Narrative) (Details) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Stock awards
Stock rights, weighted-average grant date fair value	$75.76
Stock awards, vested in the period	0.8	0.9
Stock awards, transferred by employees to the company to satisfy minimum tax obligations	0.3	0.3
Restricted performance stock rights
Stock awards
Stock rights, granted	0.1	0.2
Stock rights, weighted-average grant date fair value	$142.41	98.09
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_Aw

Schedule of Status of Stock Awards (Table) (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015
Stock awards
Stock awards, outstanding	894
Stock awards, weighted-average grant date fair value	$75.76
Stock awards, weighted-average remaining contractual term	1 year 2 months

Schedule_of_Status_of_Stock_Op

Schedule of Status of Stock Options Awards (Table) (Details) (USD $)	3 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Mar. 31, 2015
Stock Options [Abstract]
Shares under option	537
Stock options, weighted-average exercise price	$33.85
Stock options, weighted-average remaining contractual term	1 year 5 months
Stock options, aggregate intrinsic value	$56

Stock_Compensation_Plans_Compe

Stock Compensation Plans Compensation and Unrecognized Compensation Expense (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Compensation Expense [Abstract]
Allocated Share-based Compensation Expense	$4	$5
Tax benefits for stock-based compensation	1	2
Restricted Stock [Member]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation expense	1
Unrecognized compensation expense, period for recognition	1 year 11 months
Performance Shares [Member]
Unrecognized Compensation Expense [Abstract]
Unrecognized compensation expense	$38
Unrecognized compensation expense, period for recognition	1 year 5 months

Schedule_of_Condensed_Consolid

Schedule of Condensed Consolidating Statements of Operations and Comprehensive Income (Table) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Sales and service revenues
Product sales	$1,250	$1,332
Service revenues	320	262
Total sales and service revenues	1,570	1,594
Cost of sales and service revenues
Cost of product sales	985	1,060
Cost of service revenues	280	227
Income (loss) from operating investments, net	1	2
General and administrative expenses	150	150
Operating income (loss)	156	159
Interest expense	-23	-27
Earnings (loss) before income taxes	133	132
Federal income taxes	46	42
Net earnings (loss)	87	90
Other comprehensive income (loss), net of tax	13	6
Comprehensive income (loss)	100	96
Huntington Ingalls Industries, Inc.
Cost of sales and service revenues
Interest expense	-22	-25
Income (Loss) from Subsidiaries, before Tax	101	107
Earnings (loss) before income taxes	79	82
Federal income taxes	-8	-8
Net earnings (loss)	87	90
Other comprehensive income (loss), net of tax	13	6
Comprehensive income (loss)	100	96
Subsidiary Guarantors
Sales and service revenues
Product sales	1,250	1,332
Service revenues	309	262
Total sales and service revenues	1,559	1,594
Cost of sales and service revenues
Cost of product sales	985	1,060
Cost of service revenues	271	227
Income (loss) from operating investments, net	1	2
General and administrative expenses	147	150
Operating income (loss)	157	159
Interest expense	-1	-2
Earnings (loss) before income taxes	156	157
Federal income taxes	54	50
Net earnings (loss)	102	107
Other comprehensive income (loss), net of tax	15	6
Comprehensive income (loss)	117	113
Non-Guarantor Subsidiaries
Sales and service revenues
Service revenues	11	2
Total sales and service revenues	11	2
Cost of sales and service revenues
Cost of service revenues	9	2
General and administrative expenses	3
Operating income (loss)	-1
Earnings (loss) before income taxes	-1
Net earnings (loss)	-1
Other comprehensive income (loss), net of tax	-2
Comprehensive income (loss)	-3
Eliminations
Sales and service revenues
Service revenues		-2
Total sales and service revenues		-2
Cost of sales and service revenues
Cost of service revenues		-2
Income (Loss) from Subsidiaries, before Tax	-101	-107
Earnings (loss) before income taxes	-101	-107
Net earnings (loss)	-101	-107
Other comprehensive income (loss), net of tax	-13	-6
Comprehensive income (loss)	($114)	($113)

Schedule_of_Condensed_Consolid1

Schedule of Condensed Consolidating Statements of Financial Position (Table) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Current Assets
Cash and cash equivalents	$904	$990	$742	$1,043
Accounts receivable, net	1,219	1,038
Inventoried costs, net	336	339
Deferred income taxes	132	129
Prepaid expenses and other current assets	37	50
Total current assets	2,628	2,546
Property, plant, and equipment, net	1,768	1,792
Goodwill	1,032	1,026
Other purchased intangibles	540	547
Pension plan assets	21	17
Long-term deferred tax asset	203	212
Miscellaneous other assets	127	129
Total assets	6,319	6,269
Current Liabilities
Trade accounts payable	307	269
Accrued employees' compensation	183	248
Current portion of long-term debt	108	108
Current portion of postretirement plan liabilities	143	143
Current portion of workers' compensation liabilities	223	221
Advance payments and billings in excess of revenues	78	74
Other current liabilities	290	249
Total current liabilities	1,332	1,312
Long-term debt	1,592	1,592
Pension plan liabilities	949	939
Other postretirement plan liabilities	509	507
Workers' compensation liabilities	453	449
Other long-term liabilities	104	105
Total liabilities	4,939	4,904
Stockholders' equity	1,380	1,365	1,561	1,521
Total liabilities and stockholders' equity	6,319	6,269
Huntington Ingalls Industries, Inc.
Current Assets
Cash and cash equivalents	874	980	722	1,042
Prepaid expenses and other current assets		1
Total current assets	874	981
Miscellaneous other assets	27	30
Investment in subsidiaries	3,500	3,421
Total assets	4,401	4,432
Current Liabilities
Current portion of long-term debt	108	108
Other current liabilities	11	15
Total current liabilities	119	123
Long-term debt	1,488	1,488
Intercompany liabilities	1,414	1,456
Total liabilities	3,021	3,067
Stockholders' equity	1,380	1,365
Total liabilities and stockholders' equity	4,401	4,432
Subsidiary Guarantors
Current Assets
Cash and cash equivalents	2	4	1
Accounts receivable, net	1,209	1,022
Inventoried costs, net	336	339
Deferred income taxes	132	129
Prepaid expenses and other current assets	36	48
Total current assets	1,715	1,542
Property, plant, and equipment, net	1,766	1,790
Goodwill	1,032	1,026
Other purchased intangibles	540	547
Pension plan assets	21	17
Long-term deferred tax asset	203	212
Miscellaneous other assets	100	99
Intercompany receivables	1,429	1,469
Total assets	6,806	6,702
Current Liabilities
Trade accounts payable	305	265
Accrued employees' compensation	182	247
Current portion of postretirement plan liabilities	143	143
Current portion of workers' compensation liabilities	223	221
Advance payments and billings in excess of revenues	78	74
Other current liabilities	261	234
Total current liabilities	1,192	1,184
Long-term debt	104	104
Pension plan liabilities	949	939
Other postretirement plan liabilities	509	507
Workers' compensation liabilities	453	449
Other long-term liabilities	104	105
Total liabilities	3,311	3,288
Stockholders' equity	3,495	3,414
Total liabilities and stockholders' equity	6,806	6,702
Non-Guarantor Subsidiaries
Current Assets
Cash and cash equivalents	28	6	19	1
Accounts receivable, net	10	16
Prepaid expenses and other current assets	1	5
Total current assets	39	27
Property, plant, and equipment, net	2	2
Total assets	41	29
Current Liabilities
Trade accounts payable	2	4
Accrued employees' compensation	1	1
Other current liabilities	18	4
Total current liabilities	21	9
Intercompany liabilities	15	13
Total liabilities	36	22
Stockholders' equity	5	7
Total liabilities and stockholders' equity	41	29
Eliminations
Current Assets
Prepaid expenses and other current assets		-4
Total current assets		-4
Investment in subsidiaries	-3,500	-3,421
Intercompany receivables	-1,429	-1,469
Total assets	-4,929	-4,894
Current Liabilities
Other current liabilities		-4
Total current liabilities		-4
Intercompany liabilities	-1,429	-1,469
Total liabilities	-1,429	-1,473
Stockholders' equity	-3,500	-3,421
Total liabilities and stockholders' equity	($4,929)	($4,894)

Schedule_of_Condensed_Consolid2

Schedule of Condensed Consolidating Statements of Cash Flows (Table) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Condensed Financial Statements, Captions
Net cash provided by (used in) operating activities	($3)	($214)
Investing Activities
Additions to property, plant, and equipment	-20	-24
Acquisitions of businesses, net of cash received	-6	-46
Proceeds from disposition of assets	32
Net cash provided by (used in) investing activities	6	-70
Financing Activities
Dividends paid	-19	-10
Repurchases of common stock	-29	-10
Employee taxes on certain share-based payment arrangements	-54
Proceeds from stock option exercises		1
Excess tax benefit related to stock-based compensation	13	2
Net cash provided by (used in) financing activities	-89	-17
Change in cash and cash equivalents	-86	-301
Cash and cash equivalents, beginning of period	990	1,043
Cash and cash equivalents, end of period	904	742
Huntington Ingalls Industries, Inc.
Condensed Financial Statements, Captions
Net cash provided by (used in) operating activities	-16	-36
Financing Activities
Dividends paid	-19	-10
Repurchases of common stock	-29	-10
Net funding from (to) subsidiary	-42	-264
Net cash provided by (used in) financing activities	-90	-284
Change in cash and cash equivalents	-106	-320
Cash and cash equivalents, beginning of period	980	1,042
Cash and cash equivalents, end of period	874	722
Subsidiary Guarantors
Condensed Financial Statements, Captions
Net cash provided by (used in) operating activities	-8	-196
Investing Activities
Additions to property, plant, and equipment	-19	-24
Acquisitions of businesses, net of cash received	-6	-46
Proceeds from disposition of assets	32
Net funding from (to) parent	40	264
Net cash provided by (used in) investing activities	47	194
Financing Activities
Employee taxes on certain share-based payment arrangements	-54
Proceeds from stock option exercises		1
Excess tax benefit related to stock-based compensation	13	2
Net cash provided by (used in) financing activities	-41	3
Change in cash and cash equivalents	-2	1
Cash and cash equivalents, beginning of period	4
Cash and cash equivalents, end of period	2	1
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions
Net cash provided by (used in) operating activities	21	18
Investing Activities
Additions to property, plant, and equipment	-1
Net funding from (to) parent	2
Net cash provided by (used in) investing activities	1
Financing Activities
Change in cash and cash equivalents	22	18
Cash and cash equivalents, beginning of period	6	1
Cash and cash equivalents, end of period	28	19
Eliminations
Investing Activities
Net funding from (to) parent	-42	-264
Net cash provided by (used in) investing activities	-42	-264
Financing Activities
Net funding from (to) subsidiary	42	264
Net cash provided by (used in) financing activities	$42	$264