Change in operating earnings due to change in accounting estimate under the cumulative catch-up method of accounting.

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- Definition

Change in diluted earnings per share due to change in accounting estimate under the cumulative catch-up method of accounting.

+ References

No definition available.

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- Definition

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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- Definition

Amount of recoveries of receivables doubtful of collection that were previously charged off.

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No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
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- Definition

Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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Basis of Presentation Change in Accounting Estimate (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Change in Accounting Estimate
Allowance for Doubtful Accounts Receivable, Current	$ (15)				$ (15)		$ (4)
Provision for doubtful accounts					10
Allowance for Doubtful Accounts Receivable, Recoveries	13	$ 7
Contracts Accounted for under Percentage of Completion
Change in Accounting Estimate
Increase (decrease) in operating income due to net cumulative catch-up adjustments	$ 56			$ 24	$ 142	$ 167
Increase (decrease) in diluted earnings per share due to net cumulative catch-up adjustments	$ 0.79			$ 0.33	$ 2.01	$ 2.29
Ingalls contract [Member] \| Contracts Accounted for under Percentage of Completion
Change in Accounting Estimate
Increase (decrease) in operating income due to net cumulative catch-up adjustments					$ 0	$ 67
Increase (decrease) in diluted earnings per share due to net cumulative catch-up adjustments					$ 0.00	$ 0.92
Westinghouse Bankruptcy [Member]
Change in Accounting Estimate
Estimated potential bankruptcy claw back	$ 28				$ 28
Technical Solutions
Change in Accounting Estimate
Provision for doubtful accounts			$ 29