v2.4.0.6
Loans and Allowance for Credit Losses, PCI, by Loan to Value Ratio, Consumer (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Purchased Credit Impaired Loans by Loan to Value [Abstract]    
Purchased Credit Impaired Loans, Carrying Value $ 35,534 $ 36,719
Residential Mortgage [Member]
    
Purchased Credit Impaired Loans by Loan to Value [Abstract]    
Purchased Credit Impaired Loans, Carrying Value 29,280 29,952
Real estate 1-4 family first mortgage [Member]
    
Purchased Credit Impaired Loans by Loan to Value [Abstract]    
Purchased Credit Impaired Loans, Carrying Value 29,082 29,746
Real estate 1-4 family junior lien mortgage [Member]
    
Purchased Credit Impaired Loans by Loan to Value [Abstract]    
Purchased Credit Impaired Loans, Carrying Value 198 206
Purchased Credit-Impaired Loans [Member] | Residential Mortgage [Member]
    
Purchased Credit Impaired Loans by Loan to Value [Abstract]    
0-60% 1,252 1,268
60.01-80% 3,893 3,855
80.01-100% 9,141 9,404
100.01-120% 9,515 9,550
Greater than 120% 13,691 14,564
No LTV/CLTV Available 83 103
Purchased Credit Impaired Loans 37,575 38,744
Purchased Credit Impaired Loans, Carrying Value 29,280 29,952
Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family first mortgage [Member]
    
Purchased Credit Impaired Loans by Loan to Value [Abstract]    
0-60% 1,232 1,243
60.01-80% 3,846 3,806
80.01-100% 9,080 9,341
100.01-120% 9,438 9,471
Greater than 120% 13,455 14,318
No LTV/CLTV Available 76 100
Purchased Credit Impaired Loans 37,127 38,279
Purchased Credit Impaired Loans, Carrying Value 29,082 29,746
Purchased Credit-Impaired Loans [Member] | Real estate 1-4 family junior lien mortgage [Member]
    
Purchased Credit Impaired Loans by Loan to Value [Abstract]    
0-60% 20 25
60.01-80% 47 49
80.01-100% 61 63
100.01-120% 77 79
Greater than 120% 236 246
No LTV/CLTV Available 7 3
Purchased Credit Impaired Loans 448 465
Purchased Credit Impaired Loans, Carrying Value $ 198 $ 206