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 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Rollforward of Accretable Yield        
Accretable yield, beginning of period $ 3,288   $ 3,805  
Accretion (147)   (465)  
Disposals/transfers (282)   (521)  
Reclassifications from nonaccretable difference 80   120  
Accretable yield, end of period 2,939   2,939  
Purchased credit impaired loans sold 538 $ 111 742 $ 435
Purchased Credit-impaired        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Financing receivable allowance sold $ 45 $ 11 $ 80 $ 50