Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax			$ 13	$ 20
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ 2,831	1,889	2,676
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustments		(264)	(124)	(197)
Pension and OPEB adjustments	[1]	(13)	4	38
Net unrealized gain (loss) on cash flow hedges	[2]		(26)	59
Reclassification into earnings from cash flow hedges		9	7	1
Unrealized gain (loss) on investments in available for sale securities		(6)	3	(4)
Reclassification into earnings from available for sale securities				4
Other comprehensive income (loss), net of tax		(274)	(136)	(99)
Comprehensive Income		2,557	1,753	2,577
Less: Comprehensive Income Attributable to Noncontrolling Interests		4	14	5
Comprehensive income (loss)		$ 2,553	$ 1,739	$ 2,572

[1] Net of insignificant tax expense in 2015, 2014 and $17 million tax expense in 2013. See Note 21 for additional information.

[2] Net of insignificant tax expense in 2015, $13 million tax benefit in 2014 and $20 million tax expense in 2013.