CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 1,035	$ 482
Other comprehensive income (loss), net of reclassification adjustments:
Foreign currency translation gain (loss)	331	154
Unrealized gains (losses) on investments, net	(20)	23
Tax benefit (expense) on unrealized gains (losses) on investments, net	12	(21)
Unrealized gains (losses) on hedging activities, net	(34)	3
Tax benefit (expense) on unrealized gains (losses) on hedging activities, net	0	0
Other comprehensive income (loss), net of tax	289	159
Comprehensive income	$ 1,324	$ 641