Quarterly report pursuant to Section 13 or 15(d)

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

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Outstanding Loans and Leases - Credit Card and Other Consumer - Impaired Loans (Details) - Credit card and other consumer - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Financing Receivable, Impaired [Line Items]      
Fixed payment plan period for loans modified 60 months    
Direct/Indirect Consumer      
Unpaid Principal Balance      
With no recorded allowance $ 59   $ 58
With an allowance recorded 1   1
Total 60   59
Carrying Value      
With no recorded allowance 28   28
With an allowance recorded 1   1
Total 29   29
Related Allowance 0   0
Average Carrying Value      
With no recorded allowance 27 $ 19  
With an allowance recorded 1 3  
Total 28 22  
Interest Income Recognized      
With no recorded allowance 0 0  
With an allowance recorded 0 0  
Total 0 0  
United States | Credit Card Receivable      
Unpaid Principal Balance      
With an allowance recorded 465   454
Total 465   454
Carrying Value      
With an allowance recorded 472   461
Total 472   461
Related Allowance 128   $ 125
Average Carrying Value      
With an allowance recorded 465 477  
Total 465 477  
Interest Income Recognized      
With an allowance recorded 6 6  
Total 6 6  
Non United States | Credit Card Receivable      
Average Carrying Value      
With an allowance recorded, including loans held for sale 0 102  
Total, including loans held for sale 0 102  
Interest Income Recognized      
With an allowance recorded, including loans held for sale 0 1  
Total, including loans held for sale $ 0 $ 1