CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 642	$ 219
Other comprehensive income (loss):
Change in foreign currency translation adjustment	(1)	(18)
Change in unrealized gain/loss on available-for-sale investments, net of tax	2	0
Change in unrealized gain/loss on derivative, net of tax	0	1
Comprehensive income	$ 643	$ 202