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 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Commercial [Member]
       
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance $ 668 $ 552 $ 1,496 $ 1,402
Carrying Value 644 521 1,354 1,336
Net Charge-Offs 27 6 32 30
Commercial Credit Card Financing Receivable [Member] | U.S. Commercial
       
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance 361 152 853 558
Carrying Value 357 143 771 534
Net Charge-Offs 27 0 28 15
Financing Receivable, Modifications, Payment Default, Carrying Value 128 129 128 129
Commercial Credit Card Financing Receivable [Member] | Non-U.S. Commercial
       
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance    22 21 87
Carrying Value    22 7 87
Net Charge-Offs            
Commercial Real Estate [Member]
       
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance 305 373 615 737
Carrying Value 284 350 569 695
Net Charge-Offs    5 3 12
Financing Receivable, Modifications, Payment Default, Carrying Value 269 390 269 390
U.S. Small Business Commercial
       
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance 2 [1] 5 [1] 7 [1] 20 [1]
Carrying Value 3 [1] 6 [1] 7 [1] 20 [1]
Net Charge-Offs    [1] 1 [1] 1 [1] 3 [1]
U.S. Small Business Commercial | U.S. Commercial
       
Financing Receivable, Modifications [Line Items]        
Financing Receivable, Modifications, Payment Default, Carrying Value $ 1 $ 28 $ 1 $ 28
[1] U.S. small business commercial TDRs are comprised of renegotiated small business card loans.