Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Purchased Credit-Impaired Loans (Details)

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Outstanding Loans and Leases - Purchased Credit-Impaired Loans (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]        
Accretable yield, beginning of period $ 4,250   $ 4,569  
Accretion (185)   (377)  
Disposals/transfers (124)   (235)  
Reclassifications from nonaccretable difference 101   85  
Accretable yield, end of period 4,042   4,042  
Purchased credit impaired loans sold 150 $ 401 324 $ 987
Purchased Credit - impaired        
Financing Receivable, Allowance for Credit Losses [Line Items]        
Financing receivable allowance sold $ 19 $ 65 $ 39 $ 175