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Income Taxes (Unaudited) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Consolidated effective income tax rate (percent)			(2.00%)	18.00%
U.S. operations	$ 331	$ 356	$ 293	$ 2,020
International operations	(217)	(7)	(372)	(258)
Total	$ 114	$ 349	(79)	1,762
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			$ 1,600	$ 2,000
Effective Income Tax Rate, Adjusted, Percent			32.00%	37.00%

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations, adjusted for special items.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32698-109319

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