Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income		$ 1,247	$ 948	$ 3,740	$ 3,323
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax		(61)	(29)	(100)	(14)
Cash flow hedges, net of tax		0	1	1	3
Net other comprehensive income (loss)	[1]	(61)	(28)	(99)	(11)
Comprehensive income		1,186	920	3,641	3,312
Comprehensive income attributable to noncontrolling interest		1	0	1	0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		$ 1,185	$ 920	$ 3,640	$ 3,312

[1] All amounts are net of tax.