v2.4.0.6
Loans and Allowance for Credit Losses, Loans by FICO Score, Consumer (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]    
Purchased Credit Impaired Loans, Carrying Value $ 35,534 $ 36,719
Loans 766,521 769,631
Real estate 1-4 family first mortgage [Member]
    
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]    
Purchased Credit Impaired Loans, Carrying Value 29,082 29,746
Loans 228,885 228,894
Real estate 1-4 family junior lien mortgage [Member]
    
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]    
Purchased Credit Impaired Loans, Carrying Value 198 206
Loans 83,173 85,991
Credit Card [Member]
    
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]    
Purchased Credit Impaired Loans, Carrying Value 0 0
Loans 21,998 22,836
Other revolving credit and installment [Member]
    
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]    
Purchased Credit Impaired Loans, Carrying Value 0 0
Loans 86,716 86,460
Total Consumer [Member]
    
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]    
Purchased Credit Impaired Loans, Carrying Value 29,280 29,952
Loans 420,772 424,181
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
    
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]    
Less than 600 20,733 21,604
600-639 10,895 10,978
640-679 15,402 15,563
680-719 23,703 23,622
720-759 27,387 27,417
760-799 47,741 47,337
Greater than 800 22,648 21,381
No FICO available 3,391 4,691
FICO not required 0 0
Government insured/guaranteed loans 27,903 26,555
Loans, excluding Purchased Credit Impaired Loans 199,803 199,148
Loans Excluding Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
    
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]    
Less than 600 7,197 7,428
600-639 4,019 4,086
640-679 7,058 7,187
680-719 12,196 12,497
720-759 17,094 17,574
760-799 23,831 24,979
Greater than 800 9,816 10,247
No FICO available 1,764 1,787
FICO not required 0 0
Government insured/guaranteed loans 0 0
Loans, excluding Purchased Credit Impaired Loans 82,975 85,785
Loans Excluding Purchased Credit-Impaired Loans [Member] | Credit Card [Member]
    
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]    
Less than 600 2,360 2,323
600-639 1,802 1,787
640-679 3,330 3,383
680-719 4,370 4,697
720-759 4,425 4,760
760-799 3,441 3,517
Greater than 800 1,883 1,969
No FICO available 387 400
FICO not required 0 0
Government insured/guaranteed loans 0 0
Loans, excluding Purchased Credit Impaired Loans 21,998 22,836
Loans Excluding Purchased Credit-Impaired Loans [Member] | Other revolving credit and installment [Member]
    
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]    
Less than 600 8,365 8,921
600-639 5,839 6,222
640-679 9,191 9,350
680-719 10,544 10,465
720-759 9,874 9,936
760-799 11,242 11,163
Greater than 800 5,866 5,674
No FICO available 6,208 4,393
FICO not required 4,831 4,990
Government insured/guaranteed loans 14,756 15,346
Loans, excluding Purchased Credit Impaired Loans 86,716 86,460
Loans Excluding Purchased Credit-Impaired Loans [Member] | Total Consumer [Member]
    
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]    
Less than 600 38,655 40,276
600-639 22,555 23,073
640-679 34,981 35,483
680-719 50,813 51,281
720-759 58,780 59,687
760-799 86,255 86,996
Greater than 800 40,213 39,271
No FICO available 11,750 11,271
FICO not required 4,831 4,990
Government insured/guaranteed loans 42,659 41,901
Loans, excluding Purchased Credit Impaired Loans $ 391,492 $ 394,229