Condensed Consolidated Statement of Comprehensive Income (Loss) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income	$ 597	$ 491	$ 1,859	$ 1,250
Other comprehensive income (loss), before tax and net of reclassification adjustments:
Foreign currency translation	191	(513)	80	5
Unrealized gains (losses) on investments, net	89	(253)	126	(150)
Unrealized (losses) gains on hedging activities, net	(73)	65	(90)	23
Other comprehensive income (loss), before tax	207	(701)	116	(122)
Tax (provision) provision related to items of other comprehensive income	(22)	83	(16)	44
Other comprehensive income (loss), net tax	185	(618)	100	(78)
Comprehensive income (loss)	$ 782	$ (127)	$ 1,959	$ 1,172