Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ 2,170	$ 2,831	$ 1,889
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustments		694	(264)	(124)
Pension and OPEB adjustments		(11)	(13)	4
Net unrealized gain (loss) on cash flow hedges	[1]	17		(26)
Reclassification into earnings from cash flow hedges		13	9	7
Unrealized gain (loss) on investments in available for sale securities		2	(6)	3
Other comprehensive income (loss), net of tax		715	(274)	(136)
Comprehensive Income		2,885	2,557	1,753
Less: Comprehensive Income Attributable to Noncontrolling Interests		20	4	14
Comprehensive income (loss)		$ 2,865	$ 2,553	$ 1,739

[1] Net of insignificant tax expense in 2016 and 2015, and $13 million tax benefit in 2014.