Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Credit Card and Other Consumer (Details)

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Outstanding Loans and Leases - Credit Card and Other Consumer (Details) - Credit card and other consumer - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Financing Receivable, Impaired [Line Items]          
Fixed payment plan period for loans modified     60 months    
Direct/Indirect Consumer          
Unpaid Principal Balance          
With no recorded allowance $ 53   $ 53   $ 49
With an allowance recorded 1   1   3
Total 54   54   52
Carrying Value          
With no recorded allowance 25   25   22
With an allowance recorded 2   2   3
Total 27   27   25
Related Allowance 0   0   0
Average Carrying Value          
With no recorded allowance 20 $ 21 19 $ 21  
With an allowance recorded 2 7 2 12  
Total 22 28 21 33  
Interest Income Recognized          
With no recorded allowance 0 0 0 0  
With an allowance recorded 0 0 0 0  
Total 0 0 0 0  
United States | Credit Card Receivable          
Unpaid Principal Balance          
With an allowance recorded 452   452   479
Total 452   452   479
Carrying Value          
With an allowance recorded 458   458   485
Total 458   458   485
Related Allowance 125   125   128
Average Carrying Value          
With an allowance recorded 457 539 466 571  
Total 457 539 466 571  
Interest Income Recognized          
With an allowance recorded 6 7 18 24  
Total 6 7 18 24  
Non United States | Credit Card Receivable          
Unpaid Principal Balance          
With an allowance recorded, including loans held for sale         88
Total, including loans held for sale         88
Carrying Value          
With an allowance recorded, including loans held for sale         100
Total, including loans held for sale         100
Related allowance, including loans held for sale         $ 61
Average Carrying Value          
With an allowance recorded   107   115  
With an allowance recorded, including loans held for sale 0   62    
Total, including loans held for sale 0   62    
Total   107   115  
Interest Income Recognized          
With an allowance recorded   0   2  
With an allowance recorded, including loans held for sale 0   1    
Total, including loans held for sale $ 0   $ 1    
Total   $ 0   $ 2