Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Commercial Loans - Impaired Loans (Details)

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Outstanding Loans and Leases - Commercial Loans - Impaired Loans (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Commercial lease financing | United States          
Average Carrying Value          
With no recorded allowance $ 7 $ 0 $ 6 $ 0  
Interest Income Recognized          
With no recorded allowance 0 0 0 0  
Commercial Portfolio Segment          
Financing Receivable, Impaired [Line Items]          
Lending commitments 317   317   $ 205
Real estate acquired through foreclosure 21   21   52
Commercial Portfolio Segment | United States          
Unpaid Principal Balance          
With no recorded allowance 599   599   576
With an allowance recorded 1,529   1,529   1,393
Total 2,128   2,128   1,969
Carrying Value          
With no recorded allowance 596   596   571
With an allowance recorded 1,246   1,246   1,109
Total 1,842   1,842   1,680
Related Allowance 140   140   98
Average Carrying Value          
With no recorded allowance 684 857 678 870  
With an allowance recorded 1,221 1,264 1,163 1,376  
Total 1,905 2,121 1,841 2,246  
Interest Income Recognized          
With no recorded allowance 4 3 8 6  
With an allowance recorded 10 7 21 16  
Total 14 10 29 22  
Commercial Portfolio Segment | Non United States          
Unpaid Principal Balance          
With no recorded allowance 8   8   14
With an allowance recorded 426   426   528
Total 434   434   542
Carrying Value          
With no recorded allowance 8   8   11
With an allowance recorded 395   395   507
Total 403   403   518
Related Allowance 41   41   58
Average Carrying Value          
With no recorded allowance 61 43 61 75  
With an allowance recorded 386 482 416 469  
Total 447 525 477 544  
Interest Income Recognized          
With no recorded allowance 0 0 2 0  
With an allowance recorded 4 3 6 6  
Total 4 3 8 6  
Commercial Portfolio Segment | Commercial Real Estate          
Unpaid Principal Balance          
With no recorded allowance 112   112   83
With an allowance recorded 100   100   133
Total 212   212   216
Carrying Value          
With no recorded allowance 104   104   80
With an allowance recorded 20   20   41
Total 124   124   121
Related Allowance 3   3   4
Average Carrying Value          
With no recorded allowance 81 48 75 54  
With an allowance recorded 8 106 22 91  
Total 89 154 97 145  
Interest Income Recognized          
With no recorded allowance 1 0 1 0  
With an allowance recorded 0 1 0 2  
Total 1 1 1 2  
Commercial Portfolio Segment | Commercial lease financing          
Unpaid Principal Balance          
With no recorded allowance 3   3   0
With an allowance recorded 45   45   20
Total 48   48   20
Carrying Value          
With no recorded allowance 3   3   0
With an allowance recorded 44   44   18
Total 47   47   18
Related Allowance 0   0   3
Average Carrying Value          
With an allowance recorded 25 4 18 4  
Total 32 4 24 4  
Interest Income Recognized          
With an allowance recorded 0 0 0 0  
Total 0 0 0 0  
Commercial Portfolio Segment | Small Business Commercial          
Unpaid Principal Balance          
With an allowance recorded 86   86   84
Total 86   86   84
Carrying Value          
With an allowance recorded 73   73   70
Total 73   73   70
Related Allowance 28   28   $ 27
Average Carrying Value          
With an allowance recorded 73 77 74 75  
Total 73 77 74 75  
Interest Income Recognized          
With an allowance recorded 0 0 0 0  
Total $ 0 $ 0 $ 0 $ 0