Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income (loss)	$ 274	$ (39)	$ 631
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax of $(20), $(30), and $20	63	76	(123)
Net change in unrealized gains on available-for-sale securities:
Unrealized gains (losses), net of tax of $3, $(3), and $1	(10)	8	(1)
Reclassification adjustment for losses (gains) included in “Other income (expense), net,” net of tax of $(1), $3, and $1	1	(7)	(2)
Net unrealized gains (losses) on available-for-sale securities	(9)	1	(3)
Total other comprehensive income (loss)	54	77	(126)
Comprehensive income	$ 328	$ 38	$ 505