Equity in Net Assets of Non-consolidated Affiliates (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Noncontrolling Interest [Line Items]
Equity income	$ 36	$ 28
SAIC-GMAC [Member]
Noncontrolling Interest [Line Items]
Undistributed earnings	77
Equity income	36	$ 28
Cash dividends received	$ 27

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Dividends received on equity and other investments during the current period.

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