Purchased Credit Impaired Loans by Delinquency Status, Consumer (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Purchased Credit Impaired Loans by Days Past Due [Abstract]
Purchased Credit Impaired Loans, Carrying Value	$ 38,693	$ 41,430
Residential Mortgage [Member]
Purchased Credit Impaired Loans by Days Past Due [Abstract]
Current	28,000	29,610
1-29 DPD	111	123
30-59 DPD	3,422	3,616
60-89 DPD	1,369	1,381
90-119 DPD	704	894
120-179 DPD	1,084	1,365
180+ DPD	6,806	7,434
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 Days Past Due [Abstract]
Current	27,778	29,253
1-29 DPD	39	44
30-59 DPD	3,403	3,586
60-89 DPD	1,360	1,364
90-119 DPD	696	881
120-179 DPD	1,072	1,346
180+ DPD	6,638	7,214
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 Days Past Due [Abstract]
Current	222	357
1-29 DPD	72	79
30-59 DPD	19	30
60-89 DPD	9	17
90-119 DPD	8	13
120-179 DPD	12	19
180+ DPD	168	220
Purchased Credit Impaired Loans	510	735
Purchased Credit Impaired Loans, Carrying Value	$ 229	$ 250