Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Commercial Loans TDRs (Details)

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Outstanding Loans and Leases - Commercial Loans TDRs (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Financing Receivable, Modifications [Line Items]      
Carrying Value $ 179 $ 179  
Commercial [Member]
      
Financing Receivable, Modifications [Line Items]      
Real Estate Acquired Through Foreclosure 85   90
Unpaid Principal Balance 772 666  
Carrying Value 605 621  
Net Charge-Offs 2 0  
Commercial Credit Card Financing Receivable [Member] | U.S. Commercial
      
Financing Receivable, Modifications [Line Items]      
Unpaid Principal Balance 443 397  
Carrying Value 276 394  
Net Charge-Offs 2 0  
Financing Receivable, Modifications, Payment Default, Carrying Value 95 156  
Commercial Credit Card Financing Receivable [Member] | Non-U.S. Commercial
      
Financing Receivable, Modifications [Line Items]      
Unpaid Principal Balance 58    
Carrying Value 58    
Net Charge-Offs       
Commercial Real Estate [Member]
      
Financing Receivable, Modifications [Line Items]      
Unpaid Principal Balance 269 266  
Carrying Value 269 223  
Net Charge-Offs    0  
Financing Receivable, Modifications, Payment Default, Carrying Value 121 416  
U.S. Small Business Commercial
      
Financing Receivable, Modifications [Line Items]      
Unpaid Principal Balance 2 [1] 3 [1]  
Carrying Value 2 [1] 4 [1]  
Net Charge-Offs    [1]    [1]  
U.S. Small Business Commercial | U.S. Commercial
      
Financing Receivable, Modifications [Line Items]      
Financing Receivable, Modifications, Payment Default, Carrying Value $ 1 $ 2  
[1] U.S. small business commercial TDRs are comprised of renegotiated small business card loans.