Consolidated Statement of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Consolidated Statement of Comprehensive Income [Abstract]
Net income	$ 427	$ 471
Other comprehensive income, net of related taxes:
Foreign currency translation, net of related taxes of $49 and $(23), respectively	146	360
Change in net unrealized losses on available-for-sale securities, net of reclassification adjustment and net of related taxes of $103 and $48, respectively	176	67
Change in net unrealized loss on available-for-sale securities designated in fair value hedges, net of related taxes of $21 and $10, respectively	32	15
Expected losses from other-than-temporary impairment on held-to-maturity securities related to factors other than credit, net of related taxes of $1 and $2, respectively	3	3
Change in net unrealized losses on cash flow hedges, net of related taxes of $1 and $1, respectively	1	(1)
Change in minimum pension liability, net of related taxes of $1 and $4, respectively	2	7
Other comprehensive income	360	451
Total comprehensive income	$ 787	$ 922