Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Credit Card and Other Consumer - Renegotiated TDRs Entered into During the Period by Program Type (Details)

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Outstanding Loans and Leases - Credit Card and Other Consumer - Renegotiated TDRs Entered into During the Period by Program Type (Details) - Credit card and other consumer - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Financing Receivable, Modifications [Line Items]        
Carrying Value $ 90 $ 107 $ 216 $ 278
Internal Programs        
Financing Receivable, Modifications [Line Items]        
Carrying Value 28 42 73 122
External Programs        
Financing Receivable, Modifications [Line Items]        
Carrying Value 24 25 66 69
Other        
Financing Receivable, Modifications [Line Items]        
Carrying Value 38 40 77 87
Direct/Indirect Consumer        
Financing Receivable, Modifications [Line Items]        
Carrying Value 4 4 $ 9 10
Percent expected to be in payment default within 12 months after modification     14.00%  
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 0 1 $ 2 3
Direct/Indirect Consumer | Internal Programs        
Financing Receivable, Modifications [Line Items]        
Carrying Value 0 0 0 1
Direct/Indirect Consumer | External Programs        
Financing Receivable, Modifications [Line Items]        
Carrying Value 0 0 0 0
Direct/Indirect Consumer | Other        
Financing Receivable, Modifications [Line Items]        
Carrying Value 4 4 9 9
United States | Credit Card Receivable        
Financing Receivable, Modifications [Line Items]        
Carrying Value 50 65 $ 134 184
Percent expected to be in payment default within 12 months after modification     14.00%  
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 7 11 $ 23 33
United States | Credit Card Receivable | Internal Programs        
Financing Receivable, Modifications [Line Items]        
Carrying Value 27 41 71 118
United States | Credit Card Receivable | External Programs        
Financing Receivable, Modifications [Line Items]        
Carrying Value 23 24 63 66
United States | Credit Card Receivable | Other        
Financing Receivable, Modifications [Line Items]        
Carrying Value 0 0 0 0
Non United States | Credit Card Receivable        
Financing Receivable, Modifications [Line Items]        
Carrying Value 36 38 $ 73 84
Percent expected to be in payment default within 12 months after modification     90.00%  
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 31 37 $ 95 117
Non United States | Credit Card Receivable | Internal Programs        
Financing Receivable, Modifications [Line Items]        
Carrying Value 1 1 2 3
Non United States | Credit Card Receivable | External Programs        
Financing Receivable, Modifications [Line Items]        
Carrying Value 1 1 3 3
Non United States | Credit Card Receivable | Other        
Financing Receivable, Modifications [Line Items]        
Carrying Value $ 34 $ 36 $ 68 $ 78