Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net income (loss)	$ (241)	$ 274	$ (39)
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax of $(3), $(20), and $(30)	(325)	63	76
Net change in unrealized gains on available-for-sale securities:
Unrealized gains (losses), net of tax of $1, $3, and $(3)	2	(10)	8
Reclassification adjustment for losses (gains) included in “Other income (expense), net,” net of tax of $(1), $(1), and $3	(3)	1	(7)
Net unrealized gains (losses) on available-for-sale securities	(1)	(9)	1
Total other comprehensive income (loss)	(326)	54	77
Comprehensive income (loss)	$ (567)	$ 328	$ 38