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) (Federal National Mortgage Association FNMA [Member], Consumer Portfolio Segment [Member], Countrywide [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2014
Federal National Mortgage Association FNMA [Member] | Consumer Portfolio Segment [Member] | Countrywide [Member]
   
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]    
Accretable yield, beginning of period $ 6,706 $ 6,694
Accretion (273) (554)
Disposals/Transfers (92) (183)
Reclassifications to Nonaccretable Difference (122) 262
Accretable yield, end of period $ 6,219 $ 6,219