Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax at beginning of period	$ (521)		$ (254)
Other comprehensive income (OCI)	100		(164)
Other Comprehensive Income (Loss), Before Reclassifications, Tax	(7)		(9)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(3)		(4)
Other comprehensive loss	90	$ (37)	(177)	$ (1)
Accumulated Other Comprehensive Income (Loss), Net of Tax at end of period	(431)		(431)
Other income (expense), net	(28)	(30)	(57)	(54)
Cost of sales	827	815	1,653	1,591
Income taxes	9	39	162	76
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(3)	(3)	(4)	(3)
Marketable Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax at beginning of period	4		3
Other comprehensive income (OCI)	(3)		1
Other Comprehensive Income (Loss), Before Reclassifications, Tax	0		(1)
Accumulated Other Comprehensive Income (Loss), Net of Tax at end of period	0		0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(1)	(2)	(3)	(3)
Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax at beginning of period	(123)		(136)
Other comprehensive income (OCI)	(6)		9
Other Comprehensive Income (Loss), Before Reclassifications, Tax	1		(2)
Accumulated Other Comprehensive Income (Loss), Net of Tax at end of period	(126)		(126)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	2	1	3	3
Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax at beginning of period	14		13
Other comprehensive income (OCI)	22		21
Other Comprehensive Income (Loss), Before Reclassifications, Tax	(8)		(6)
Accumulated Other Comprehensive Income (Loss), Net of Tax at end of period	24		24
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(4)	(2)	(4)	(3)
Financial Statement Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Net of Tax at beginning of period	(416)		(134)
Other comprehensive income (OCI)	87		(195)
Other Comprehensive Income (Loss), Before Reclassifications, Tax	0		0
Accumulated Other Comprehensive Income (Loss), Net of Tax at end of period	(329)		(329)
Reclassification out of Accumulated Other Comprehensive Income | Marketable Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(1)		(3)
Other comprehensive loss	(4)		(3)
Income taxes	1	0	1	1
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	2		3
Other comprehensive loss	(3)		10
Income taxes	0	(1)	(1)	(1)
Reclassification out of Accumulated Other Comprehensive Income | Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(4)		(4)
Other comprehensive loss	10		11
Income taxes	2	1	2	2
Reclassification out of Accumulated Other Comprehensive Income | Financial Statement Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	0		0
Other comprehensive loss	87		(195)
Reclassification out of Accumulated Other Comprehensive Income | Other Income (expense) | Marketable Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other income (expense), net	(2)	(2)	(4)	(4)
Reclassification out of Accumulated Other Comprehensive Income | Cost of Sales | Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cost of sales	2	2	4	4
Reclassification out of Accumulated Other Comprehensive Income | Cost of Sales | Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cost of sales	$ (6)	$ (3)	$ (6)	$ (5)