v2.4.0.6
Loans and Allowance for Credit Losses, by Loan to Value Ratio, 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 Loan to Value, 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
Residential Mortgage [Member]
         
Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract]          
Purchased Credit Impaired Loans, Carrying Value 29,952 33,495      
Loans 314,885 326,384      
Residential Mortgage [Member] | Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member]
         
Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract]          
0-60% 59,170 62,622      
60.01-80% 62,553 60,286      
80.01-100% 57,054 63,752      
100.01-120% 36,945 42,034      
Greater than 120% 37,234 42,871      
No LTV/CLTV Available 5,422 5,810      
Government insured/guaranteed loans 26,555 15,514      
Loans, excluding Purchased Credit Impaired Loans 284,933 292,889      
Real estate 1-4 family first mortgage [Member]
         
Loans by Loan to Value, 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 first mortgage [Member] | Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member]
         
Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract]          
0-60% 46,476 47,808      
60.01-80% 46,831 42,542      
80.01-100% 36,764 39,497      
100.01-120% 21,116 24,147      
Greater than 120% 18,608 24,243      
No LTV/CLTV Available 2,798 3,239      
Government insured/guaranteed loans 26,555 15,514      
Loans, excluding Purchased Credit Impaired Loans 199,148 196,990      
Real estate 1-4 family junior lien mortgage [Member]
         
Loans by Loan to Value, 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
Real estate 1-4 family junior lien mortgage [Member] | Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member]
         
Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract]          
0-60% 12,694 14,814      
60.01-80% 15,722 17,744      
80.01-100% 20,290 24,255      
100.01-120% 15,829 17,887      
Greater than 120% 18,626 18,628      
No LTV/CLTV Available 2,624 2,571      
Government insured/guaranteed loans 0 0      
Loans, excluding Purchased Credit Impaired Loans $ 85,785 $ 95,899