Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net income (loss)	$ 596	$ (241)	$ 274
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax of $10, $(3), and $(20)	(210)	(325)	63
Net change in unrealized gains (losses) on available-for-sale securities:
Unrealized gains (losses), net of tax of $(5), $1, and $3	(7)	2	(10)
Reclassification adjustment for losses (gains) included in “Other income (expense), net,” net of tax of $0, $(1), and $(1)	5	(3)	1
Net unrealized gains (losses) on available-for-sale securities	(2)	(1)	(9)
Total other comprehensive income (loss)	(212)	(326)	54
Comprehensive income (loss)	$ 384	$ (567)	$ 328