v2.4.0.6
Securitizations and Variable Interest Entities, Principal Balances of Off-Balance Sheet Securitized Loans (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]    
Total Loans $ 1,414,103 $ 1,311,060
Delinquent loans 33,900 35,508
Net charge-offs (recoveries) 1,711 2,091
Real estate mortgage [Member]
   
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]    
Total Loans 128,564 137,121
Delinquent loans 12,216 11,142
Net charge-offs (recoveries) 541 569
Total Commercial [Member]
   
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]    
Total Loans 128,564 137,121
Delinquent loans 12,216 11,142
Net charge-offs (recoveries) 541 569
Real estate 1-4 family first mortgage [Member]
   
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]    
Total Loans 1,283,504 1,171,666
Delinquent loans 21,574 24,235
Net charge-offs (recoveries) 1,170 1,506
Real estate 1-4 family junior lien mortgage [Member]
   
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]    
Total Loans 1 2
Delinquent loans 0 0
Net charge-offs (recoveries) 0 16
Other revolving credit and installment [Member]
   
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]    
Total Loans 2,034 2,271
Delinquent loans 110 131
Net charge-offs (recoveries) 0 0
Total Consumer [Member]
   
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]    
Total Loans 1,285,539 1,173,939
Delinquent loans 21,684 24,366
Net charge-offs (recoveries) $ 1,170 $ 1,522