v2.4.0.6
Loans and Allowance for Credit Losses, PCI, Allowance for Credit Losses (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Changes in allowance for PCI loan losses [Abstract]      
Beginning Balance $ 298 $ 333 $ 0
Provision for losses due to credit deterioration 160 771 853
Charge-offs (227) (806) (520)
Ending Balance 231 298 333
Commercial and Industrial Loans [Member]
     
Changes in allowance for PCI loan losses [Abstract]      
Beginning Balance 266 330 0
Provision for losses due to credit deterioration 106 712 850
Charge-offs (207) (776) (520)
Ending Balance 165 266 330
Pick-a-pay [Member]
     
Changes in allowance for PCI loan losses [Abstract]      
Beginning Balance 0 0 0
Provision for losses due to credit deterioration 0 0 0
Charge-offs 0 0 0
Ending Balance 0 0 0
Other Consumer [Member]
     
Changes in allowance for PCI loan losses [Abstract]      
Beginning Balance 32 3 0
Provision for losses due to credit deterioration 54 59 3
Charge-offs (20) (30) 0
Ending Balance $ 66 $ 32 $ 3