Percentage of operating assets located outside United States.

No definition available.

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- Definition

The amount of the remaining performance obligation expected to be recognized as revenue.

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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-Topic 280
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- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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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.

+ Details

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Segment and Revenue Information (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) segments	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments \| segments	4
Percent of operating assets located outside the United States	4.00%	4.00%
Revenue, Remaining Performance Obligation, Amount	$ 363,404
Earnings from operations associated with our cost and equity method investments	$ 86	$ 90	$ 167
Within Next fiscal Year [Member]
Segment Reporting Information [Line Items]
Revenue, Remaining Performance Obligation, Percent Recognized	20.00%
Within Next 4 Fiscal Years [Member]
Segment Reporting Information [Line Items]
Revenue, Remaining Performance Obligation, Percent Recognized	66.00%
Sales [Member] \| U.S. Government Contracts
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	51.00%	39.00%	31.00%