Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Commercial Loans TDRs (Details)

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Outstanding Loans and Leases - Commercial Loans TDRs (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Financing Receivable, Modifications [Line Items]        
Threshold period past due for nonperforming status of financing receivables     90 days  
Commercial        
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance $ 666 $ 581 $ 891 $ 1,072
Carrying Value 647 576 871 1,058
Net Charge-offs 3 0 $ 6 2
Threshold period past due for nonperforming status of financing receivables     90 days  
Commercial | U.S. Commercial        
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance 602 493 $ 794 740
Carrying Value 583 488 773 726
Net Charge-offs 3 0 6 2
Trouble debt restructurings entered payment default that were modified during the preceding twelve months     132 63
Commercial | Non United States        
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance 59 46 66 46
Carrying Value 59 46 66 46
Net Charge-offs 0 0 0 0
Commercial | Commercial Real Estate        
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance 4 39 28 282
Carrying Value 4 39 28 282
Net Charge-offs 0 0 0 0
Trouble debt restructurings entered payment default that were modified during the preceding twelve months     28 82
Commercial | Small Business Commercial        
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance 1 3 3 4
Carrying Value 1 3 4 4
Net Charge-offs $ 0 $ 0 $ 0 $ 0