CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 3,688	$ 2,940	$ 1,500
Other comprehensive income (loss):
Change in foreign currency translation adjustment, net of tax	(202)	(239)	11
Change in unrealized gain/loss on available-for-sale investments and other, net of tax	(25)	(3)	1
Comprehensive income	$ 3,461	$ 2,698	$ 1,512