CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net income	$ 10,737	$ 9,737	$ 8,505
Other comprehensive income:
Change in foreign currency translation adjustment	75	(107)	(124)
Available-for-sale investments:
Change in net unrealized gains	493	348	232
Less: reclassification adjustment for net gains included in net income	(216)	(115)	(151)
Net change (net of tax effect of $52, $54, $68)	277	233	81
Cash flow hedges:
Change in unrealized gains	47	39	196
Less: reclassification adjustment for gains included in net income	(137)	(27)	(120)
Net change (net of tax effect of $52, $2, $53)	(90)	12	76
Other comprehensive income	262	138	33
Comprehensive income	$ 10,999	$ 9,875	$ 8,538