Annual report pursuant to Section 13 and 15(d)

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

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Outstanding Loans and Leases - Commercial Loans - Impaired Loans (Details) - Commercial Portfolio Segment - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Financing Receivable, Impaired [Line Items]      
Lending commitments $ 461 $ 187  
Real estate acquired through foreclosure 14 15  
United States      
Unpaid Principal Balance      
With no recorded allowance 860 566  
With an allowance recorded 2,018 1,350  
Total 2,878 1,916  
Carrying Value      
With no recorded allowance 827 541  
With an allowance recorded 1,569 1,157  
Total 2,396 1,698  
Related Allowance 132 115  
Average Carrying Value      
With no recorded allowance 787 688 $ 546
With an allowance recorded 1,569 953 1,198
Total 2,356 1,641 1,744
Interest Income Recognized      
With no recorded allowance 14 14 12
With an allowance recorded 59 48 51
Total 73 62 63
Non United States      
Unpaid Principal Balance      
With no recorded allowance 130 4  
With an allowance recorded 545 531  
Total 675 535  
Carrying Value      
With no recorded allowance 130 4  
With an allowance recorded 432 381  
Total 562 385  
Related Allowance 104 56  
Average Carrying Value      
With no recorded allowance 34 29 15
With an allowance recorded 409 125 52
Total 443 154 67
Interest Income Recognized      
With no recorded allowance 1 1 0
With an allowance recorded 14 7 3
Total 15 8 3
Commercial Real Estate      
Unpaid Principal Balance      
With no recorded allowance 77 82  
With an allowance recorded 243 328  
Total 320 410  
Carrying Value      
With no recorded allowance 71 77  
With an allowance recorded 96 107  
Total 167 184  
Related Allowance 10 11  
Average Carrying Value      
With no recorded allowance 67 75 166
With an allowance recorded 92 216 632
Total 159 291 798
Interest Income Recognized      
With no recorded allowance 0 1 3
With an allowance recorded 4 7 16
Total 4 8 19
Commercial lease financing      
Unpaid Principal Balance      
With an allowance recorded 6 0  
Total 6 0  
Carrying Value      
With an allowance recorded 4 0  
Total 4 0  
Related Allowance 0 0  
Average Carrying Value      
With an allowance recorded 2 0 0
Total 2 0 0
Interest Income Recognized      
With an allowance recorded 0 0 0
Total 0 0 0
Small Business Commercial      
Unpaid Principal Balance      
With an allowance recorded 85 105  
Total 85 105  
Carrying Value      
With an allowance recorded 73 101  
Total 73 101  
Related Allowance 27 35  
Average Carrying Value      
With an allowance recorded 87 109 151
Total 87 109 151
Interest Income Recognized      
With an allowance recorded 1 1 3
Total $ 1 $ 1 $ 3