Segment Information (Narrative) (Details) $ in Millions	12 Months Ended
Dec. 31, 2016 USD ($) segments	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments \| segments	5
Percent of operating assets located outside the United States	4.00%	4.00%
Earnings from operations associated with our cost and equity method investments	$ 303	$ 274	$ 287
Commercial Airplanes [Member]
Segment Reporting Information [Line Items]
Earnings from operations associated with our cost and equity method investments	46	64	58
Defense, Space & Security [Member] \| Network & Space Systems [Member]
Segment Reporting Information [Line Items]
Earnings from operations associated with our cost and equity method investments	$ 257	$ 210	$ 229
Defense, Space & Security [Member] \| U S Government Contracts [Member] \| Sales [Member]
Segment Reporting Information [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	23.00%	27.00%	30.00%

Percentage of operating assets located outside United States.

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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

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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

No definition available.

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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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