Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 1,258	$ 1,266	$ 2,692	$ 2,450
Other comprehensive income (loss), net of reclassification adjustments and taxes:
Foreign currency translation losses	(25)	(40)	(48)	(42)
Effective portion of cash flow hedges	22	90	97	25
Net unrealized gains (losses) on available-for-sale securities	(205)	(5)	(267)	(3)
Other	0	0	1	0
Other comprehensive income (loss), net of tax	(208)	45	(217)	(20)
Comprehensive income	$ 1,050	$ 1,311	$ 2,475	$ 2,430