Asset Quality (Details 6) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Summary of allowance for loan and lease losses
Balance at beginning of year - continuing operations	$ 1,372	$ 2,425	$ 1,604	$ 2,534
Charge-offs	(177)	(492)	(409)	(1,049)
Recoveries	43	57	82	92
Net loans charged off	(134)	(435)	327	(957)
Provision for loan and lease losses from continuing operations	(8)	228	(48)	641
Foreign currency translation adjustment	0	1	1	1
Balance at end of year - continuing operations	$ 1,230	$ 2,219	$ 1,230	$ 2,219