v2.4.0.6
Loans and Allowance for Credit Losses, by FICO Score, Consumer (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Dec. 31, 2007
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]          
Purchased Credit Impaired Loans, Carrying Value $ 36,719 $ 41,430 $ 51,705 $ 58,797  
Loans 769,631 757,267 782,770 864,830 382,195
Real estate 1-4 family first mortgage [Member]
          
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]          
Purchased Credit Impaired Loans, Carrying Value 29,746 33,245 38,386 39,214  
Loans 228,894 230,235 229,536 247,894 71,415
Real estate 1-4 family junior lien mortgage [Member]
          
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]          
Purchased Credit Impaired Loans, Carrying Value 206 250 331 728  
Loans 85,991 96,149 103,708 110,164 75,565
Credit Card [Member]
          
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]          
Purchased Credit Impaired Loans, Carrying Value 0 0      
Loans 22,836 22,260 24,003 23,555 18,762
Other revolving credit and installment [Member]
          
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]          
Purchased Credit Impaired Loans, Carrying Value 0 0 0 151  
Loans 86,460 86,565 89,058 93,253 56,171
Total Consumer [Member]
          
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]          
Purchased Credit Impaired Loans, Carrying Value 29,952 33,495 38,717 40,093  
Loans 424,181 435,209 446,305 474,866 221,913
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Real estate 1-4 family first mortgage [Member]
          
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]          
Less than 600 21,604 26,013      
600-639 10,978 11,105      
640-679 15,563 16,202      
680-719 23,622 25,549      
720-759 27,417 29,443      
760-799 47,337 47,250      
Greater than 800 21,381 19,719      
No FICO available 4,691 6,195      
FICO not required 0 0      
Financing Receivable, Government Issued or Guaranteed 26,555 15,514      
Loans, excluding Purchased Credit Impaired Loans 199,148 196,990      
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Real estate 1-4 family junior lien mortgage [Member]
          
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]          
Less than 600 7,428 9,126      
600-639 4,086 4,457      
640-679 7,187 7,678      
680-719 12,497 13,759      
720-759 17,574 20,334      
760-799 24,979 27,222      
Greater than 800 10,247 10,607      
No FICO available 1,787 2,716      
FICO not required 0 0      
Financing Receivable, Government Issued or Guaranteed 0 0      
Loans, excluding Purchased Credit Impaired Loans 85,785 95,899      
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Credit Card [Member]
          
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]          
Less than 600 2,323 2,872      
600-639 1,787 1,826      
640-679 3,383 3,305      
680-719 4,697 4,522      
720-759 4,760 4,441      
760-799 3,517 3,215      
Greater than 800 1,969 1,794      
No FICO available 400 285      
FICO not required 0 0      
Financing Receivable, Government Issued or Guaranteed 0 0      
Loans, excluding Purchased Credit Impaired Loans 22,836 22,260      
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Other revolving credit and installment [Member]
          
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]          
Less than 600 8,921 10,806      
600-639 6,222 5,965      
640-679 9,350 8,344      
680-719 10,465 9,480      
720-759 9,936 8,808      
760-799 11,163 9,357      
Greater than 800 5,674 4,692      
No FICO available 4,393 7,528      
FICO not required 4,990 4,132      
Financing Receivable, Government Issued or Guaranteed 15,346 17,453      
Loans, excluding Purchased Credit Impaired Loans 86,460 86,565      
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total Consumer [Member]
          
Loans by FICO, Excluding Purchased Credit Impaired Loans [Abstract]          
Less than 600 40,276 48,817      
600-639 23,073 23,353      
640-679 35,483 35,529      
680-719 51,281 53,310      
720-759 59,687 63,026      
760-799 86,996 87,044      
Greater than 800 39,271 36,812      
No FICO available 11,271 16,724      
FICO not required 4,990 4,132      
Financing Receivable, Government Issued or Guaranteed 41,901 32,967      
Loans, excluding Purchased Credit Impaired Loans $ 394,229 $ 401,714