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 (Details)

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Outstanding Loans and Leases - Credit Card and Other Consumer - Renegotiated TDRs Entered into During the Period (Details) - Credit card and other consumer - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance $ 81 $ 104 $ 152 $ 202
Carrying Value $ 87 $ 113 $ 162 $ 219
Pre-Modification Interest Rate 19.54% 19.19% 19.30% 19.17%
Post-Modification Interest Rate 3.30% 3.22% 3.47% 3.35%
Net Charge-offs $ 13 $ 18 $ 17 $ 25
Direct/Indirect Consumer        
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance 7 7 12 12
Carrying Value $ 4 $ 5 $ 7 $ 7
Pre-Modification Interest Rate 4.52% 6.03% 4.50% 6.59%
Post-Modification Interest Rate 4.34% 5.05% 4.29% 5.41%
Net Charge-offs $ 3 $ 2 $ 5 $ 5
United States | Credit Card Receivable        
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance 44 61 87 123
Carrying Value $ 47 $ 66 $ 93 $ 133
Pre-Modification Interest Rate 17.57% 16.96% 17.47% 16.98%
Post-Modification Interest Rate 5.41% 4.90% 5.47% 5.01%
Net Charge-offs $ 3 $ 6 $ 4 $ 8
Non United States | Credit Card Receivable        
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance 30 36 53 67
Carrying Value $ 36 $ 42 $ 62 $ 79
Pre-Modification Interest Rate 24.01% 24.19% 23.80% 24.08%
Post-Modification Interest Rate 0.35% 0.34% 0.37% 0.33%
Net Charge-offs $ 7 $ 10 $ 8 $ 12