v2.4.0.6
Loans and Allowance for Credit Losses, Loans by Delinquency Status, Consumer (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Financing Receivable, Recorded Investment, Aging [Abstract]          
Purchased Credit Impaired Loans (carrying value) $ 30,968 $ 36,719 $ 41,430 $ 51,705 $ 58,797
Loans 799,574 769,631 757,267 782,770 864,830
Real estate 1-4 family first mortgage [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Purchased Credit Impaired Loans (carrying value) 26,839 29,746 33,245 38,386 39,214
Loans 249,900 228,894 230,235 229,536 247,894
Real estate 1-4 family junior lien mortgage [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Purchased Credit Impaired Loans (carrying value) 152 206 250 331 728
Loans 75,465 85,991 96,149 103,708 110,164
Credit Card [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Purchased Credit Impaired Loans (carrying value) 0 0      
Loans 24,640 22,836 22,260 24,003 23,555
Other revolving credit and installment [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Purchased Credit Impaired Loans (carrying value) 0 0 0 0 151
Loans 88,371 86,460 86,565 89,058 93,253
Total Consumer [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Purchased Credit Impaired Loans (carrying value) 26,991 29,952 33,495 38,717 40,093
Loans 438,376 424,181 435,209 446,305 474,866
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Current-29 DPD 179,870 156,985      
30-59 DPD 3,295 4,075      
60-89 DPD 1,528 2,012      
90-119 DPD 853 1,152      
120-179 DPD 1,141 1,704      
180+ DPD 6,655 6,665      
Government insured/guaranteed loans 29,719 26,555      
Loans, excluding Purchased Credit Impaired Loans 223,061 199,148      
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Current-29 DPD 73,256 83,033      
30-59 DPD 577 786      
60-89 DPD 339 501      
90-119 DPD 265 382      
120-179 DPD 358 537      
180+ DPD 518 546      
Government insured/guaranteed loans 0 0      
Loans, excluding Purchased Credit Impaired Loans 75,313 85,785      
Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Current-29 DPD 23,976 22,125      
30-59 DPD 211 211      
60-89 DPD 143 154      
90-119 DPD 122 135      
120-179 DPD 187 211      
180+ DPD 1 0      
Government insured/guaranteed loans 0 0      
Loans, excluding Purchased Credit Impaired Loans 24,640 22,836      
Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Current-29 DPD 74,519 69,712      
30-59 DPD 966 963      
60-89 DPD 272 275      
90-119 DPD 130 127      
120-179 DPD 33 33      
180+ DPD 5 4      
Government insured/guaranteed loans 12,446 15,346      
Loans, excluding Purchased Credit Impaired Loans 88,371 86,460      
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Current-29 DPD 351,621 331,855      
30-59 DPD 5,049 6,035      
60-89 DPD 2,282 2,942      
90-119 DPD 1,370 1,796      
120-179 DPD 1,719 2,485      
180+ DPD 7,179 7,215      
Government insured/guaranteed loans 42,165 41,901      
Loans, excluding Purchased Credit Impaired Loans $ 411,385 $ 394,229