Annual report pursuant to Section 13 and 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
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Rollforward of Accretable Yield    
Accretable yield, beginning of period $ 3,805 $ 4,569
Accretion (601) (722)
Disposals/transfers (634) (486)
Reclassifications from nonaccretable difference 219 444
Accretable yield, end of period 2,789 3,805
Purchased credit impaired loans sold $ 803 $ 549