Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Rollforward of Accretable Yield (Details)

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Outstanding Loans and Leases - Rollforward of Accretable Yield (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Rollforward of Accretable Yield        
Accretable yield, beginning of period $ 3,550   $ 3,805  
Accretion (155)   (318)  
Disposals/transfers (148)   (239)  
Reclassifications from nonaccretable difference 41   40  
Accretable yield, ending of period 3,288   3,288  
Purchased credit impaired loans sold 189 $ 150 189 $ 324
Purchased Credit-impaired        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Financing receivable allowance sold $ 15 $ 19 $ 15 $ 39