v2.4.0.6
Securitizations and Variable Interest Entities, Principal Balances of Off-Balance Sheet Securitized Loans (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]      
Total Loans $ 1,403,693   $ 1,414,103
Delinquent loans 29,724   33,900
Net charge-offs (recoveries) 327 340  
Total Commercial [Member]
     
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]      
Total Loans 118,408   128,564
Delinquent loans 9,049   12,216
Net charge-offs (recoveries) 72 54  
Real estate mortgage [Member]
     
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]      
Total Loans 118,408   128,564
Delinquent loans 9,049   12,216
Net charge-offs (recoveries) 72 54  
Total Consumer [Member]
     
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]      
Total Loans 1,285,285   1,285,539
Delinquent loans 20,675   21,684
Net charge-offs (recoveries) 255 286  
Real estate 1-4 family first mortgage [Member]
     
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]      
Total Loans 1,283,304   1,283,504
Delinquent loans 20,574   21,574
Net charge-offs (recoveries) 255 286  
Real estate 1-4 family junior lien mortgage [Member]
     
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]      
Total Loans 1   1
Delinquent loans 0   0
Net charge-offs (recoveries) 0 0  
Other revolving credit and installment [Member]
     
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]      
Total Loans 1,980   2,034
Delinquent loans 101   110
Net charge-offs (recoveries) $ 0 $ 0