CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 19,478	$ 16,348	$ 14,136
Other comprehensive (loss) income:
Change in foreign currency translation adjustment	(599)	(1,067)	(996)
Available-for-sale investments:
Change in net unrealized gains (losses)	(314)	(715)	505
Less: reclassification adjustment for net (gains) losses included in net income	221	208	(134)
Net change (net of tax effect of $60, $29, and $0)	(93)	(507)	371
Cash flow hedges:
Change in net unrealized gains (losses)	515	676	651
Less: reclassification adjustment for net (gains) losses included in net income	(351)	(1,003)	(124)
Net change (net of tax effect of $196, $115, and $64)	164	(327)	527
Other comprehensive (loss) income	(528)	(1,901)	(98)
Comprehensive income	$ 18,950	$ 14,447	$ 14,038