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) (Consumer Portfolio Segment [Member], Countrywide [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2012
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 $ 4,872 $ 4,990
Accretion (258) (534)
Disposals/Transfers (1) (25)
Reclassifications to Nonaccretable Difference 220 402
Accretable Yield, End of Period $ 4,833 $ 4,833