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) - Commercial Portfolio Segment - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Financing Receivable, Impaired [Line Items]      
Lending commitments $ 425   $ 461
Real estate acquired through foreclosure 35   14
United States      
Unpaid Principal Balance      
With no recorded allowance 983   860
With an allowance recorded 1,676   2,018
Total 2,659   2,878
Carrying Value      
With no recorded allowance 937   827
With an allowance recorded 1,330   1,569
Total 2,267   2,396
Related Allowance 131   132
Average Carrying Value      
With no recorded allowance 882 $ 583  
With an allowance recorded 1,487 1,439  
Total 2,369 2,022  
Interest Income Recognized      
With no recorded allowance 3 2  
With an allowance recorded 9 14  
Total 12 16  
Non United States      
Unpaid Principal Balance      
With no recorded allowance 85   130
With an allowance recorded 568   545
Total 653   675
Carrying Value      
With no recorded allowance 85   130
With an allowance recorded 476   432
Total 561   562
Related Allowance 103   104
Average Carrying Value      
With no recorded allowance 108 5  
With an allowance recorded 453 368  
Total 561 373  
Interest Income Recognized      
With no recorded allowance 0 0  
With an allowance recorded 3 3  
Total 3 3  
Commercial Real Estate      
Unpaid Principal Balance      
With no recorded allowance 54   77
With an allowance recorded 201   243
Total 255   320
Carrying Value      
With no recorded allowance 48   71
With an allowance recorded 65   96
Total 113   167
Related Allowance 12   10
Average Carrying Value      
With no recorded allowance 60 77  
With an allowance recorded 76 104  
Total 136 181  
Interest Income Recognized      
With no recorded allowance 0 0  
With an allowance recorded 1 1  
Total 1 1  
Commercial lease financing      
Unpaid Principal Balance      
With an allowance recorded 5   6
Total 5   6
Carrying Value      
With an allowance recorded 2   4
Total 2   4
Related Allowance 0   0
Average Carrying Value      
With an allowance recorded 3 0  
Total 3 0  
Interest Income Recognized      
With an allowance recorded 0 0  
Total 0 0  
Small Business Commercial      
Unpaid Principal Balance      
With an allowance recorded 87   85
Total 87   85
Carrying Value      
With an allowance recorded 73   73
Total 73   73
Related Allowance 28   $ 27
Average Carrying Value      
With an allowance recorded 74 102  
Total 74 102  
Interest Income Recognized      
With an allowance recorded 0 0  
Total $ 0 $ 0