Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 1,889		$ 2,676		$ 1,782
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustments	(124)		(197)		(75)
Pension and OPEB adjustments	4	[1]	38	[1]	19	[1]
Net unrealized gain (loss) on cash flow hedges	(26)	[2]	59	[2]	(28)	[2]
Reclassification into earnings from cash flow hedges	7		1		(1)
Unrealized gain (loss) on investments in available for sale securities	3		(4)		14
Reclassification into earnings from available for sale securities			4		(5)
Other comprehensive income (loss), net of tax	(136)		(99)		(76)
Comprehensive Income	1,753		2,577		1,706
Less: Comprehensive Income Attributable to Noncontrolling Interests	14		5		10
Comprehensive income (loss)	$ 1,739		$ 2,572		$ 1,696

[1] Net of insignificant tax expense in 2014, $17 million tax expense in 2013 and $9 million tax expense in 2012. See Note 21 for additional information.

[2] Net of $13 million tax benefit in 2014, $20 million tax expense in 2013 and $6 million tax expense in 2012.