Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net income (loss)	$ 2,371	$ 596	$ (241)
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax of $(3), $10, and $(49)	(279)	(210)	(325)
Net change in unrealized gains (losses) on available-for-sale securities:
Unrealized gains (losses), net of tax of $1, $(5), and $(12)	9	(7)	2
Reclassification adjustment for losses (gains) included in “Other income (expense), net,” net of tax of $(1), $0, and $0	8	5	(3)
Net unrealized gains (losses) on available-for-sale securities	17	(2)	(1)
Total other comprehensive income (loss)	(262)	(212)	(326)
Comprehensive income (loss)	$ 2,109	$ 384	$ (567)