Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net income	$ 252	$ 79	$ 1,622	$ 114
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax of $6, $4, $18, and $3	19	(56)	133	(170)
Net change in unrealized gains (losses) on available-for-sale securities:
Unrealized gains (losses), net of tax of $(15), $3, $(32), and $(5)	29	(3)	65	3
Reclassification adjustment for losses (gains) included in “Other income (expense), net,” net of tax of $(1), $(1), $(2), and $(1)	2	1	4	3
Net unrealized gains (losses) on available-for-sale securities	31	(2)	69	6
Total other comprehensive income (loss)	50	(58)	202	(164)
Comprehensive income (loss)	$ 302	$ 21	$ 1,824	$ (50)