v2.4.0.6
Loans and Allowance for Credit Losses, PCI, Allowance for Credit Losses (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 48 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Changes in allowance for PCI loan losses [Abstract]    
Balance, beginning of period $ 117 $ 0
Provision for losses due to credit deterioration (32) 1,816
Charge-offs (5) (1,699)
Balance, end of period 80 117
Commercial Portfolio Segment [Member]
   
Changes in allowance for PCI loan losses [Abstract]    
Balance, beginning of period 88 0
Provision for losses due to credit deterioration (32) 1,693
Charge-offs (3) (1,605)
Balance, end of period 53 88
Pick-a-pay [Member]
   
Changes in allowance for PCI loan losses [Abstract]    
Balance, beginning of period 0 0
Provision for losses due to credit deterioration 0 0
Charge-offs 0 0
Balance, end of period 0 0
Other Consumer [Member]
   
Changes in allowance for PCI loan losses [Abstract]    
Balance, beginning of period 29 0
Provision for losses due to credit deterioration 0 123
Charge-offs (2) (94)
Balance, end of period $ 27 $ 29