Purchased Credit Impaired Loans by FICO Score, Consumer (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Purchased Credit Impaired Loans by FICO [Abstract]
Purchased Credit Impaired Loans, Carrying Value	$ 38,693	$ 41,430
Residential Mortgage [Member]
Purchased Credit Impaired Loans by FICO [Abstract]
Less than 600	19,606	22,697
600-639	7,756	7,672
640-679	6,639	6,281
680-719	3,956	4,009
720-759	1,972	2,074
760-799	1,003	1,094
Greater than 800	223	234
No FICO available	341	362
Purchased Credit Impaired Loans	41,496	44,423
Purchased Credit Impaired Loans, Carrying Value	31,677	33,495
Real estate 1-4 family first mortgage [Member]
Purchased Credit Impaired Loans by FICO [Abstract]
Less than 600	19,365	22,334
600-639	7,671	7,563
640-679	6,554	6,185
680-719	3,907	3,949
720-759	1,957	2,057
760-799	997	1,087
Greater than 800	221	232
No FICO available	314	281
Purchased Credit Impaired Loans	40,986	43,688
Purchased Credit Impaired Loans, Carrying Value	31,448	33,245
Real estate 1-4 family junior lien mortgage [Member]
Purchased Credit Impaired Loans by FICO [Abstract]
Less than 600	241	363
600-639	85	109
640-679	85	96
680-719	49	60
720-759	15	17
760-799	6	7
Greater than 800	2	2
No FICO available	27	81
Purchased Credit Impaired Loans	510	735
Purchased Credit Impaired Loans, Carrying Value	$ 229	$ 250