Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
Outstanding Loans and Leases - Credit Card and Other Consumer - TDRs Entered into During the Period (Details) - Credit card and other consumer - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Financing Receivable, Modifications [Line Items]    
Unpaid Principal Balance $ 91 $ 96
Carrying Value $ 90 $ 101
Pre- Modification Interest Rate 17.24% 19.51%
Post- Modification Interest Rate 5.14% 3.28%
Net charge-offs $ 8 $ 6
Direct/Indirect Consumer    
Financing Receivable, Modifications [Line Items]    
Unpaid Principal Balance 17 10
Carrying Value $ 10 $ 6
Pre- Modification Interest Rate 4.98% 4.08%
Post- Modification Interest Rate 4.67% 4.04%
United States | Credit Card Receivable    
Financing Receivable, Modifications [Line Items]    
Unpaid Principal Balance $ 74 $ 52
Carrying Value $ 80 $ 55
Pre- Modification Interest Rate 18.83% 18.01%
Post- Modification Interest Rate 5.20% 5.30%
Non United States | Credit Card Receivable    
Financing Receivable, Modifications [Line Items]    
Unpaid Principal Balance   $ 34
Carrying Value   $ 40
Pre- Modification Interest Rate   23.89%
Post- Modification Interest Rate   0.34%