Annual report pursuant to Section 13 and 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
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
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 $ 4,990 $ 5,481
Accretion (1,034) (1,285)
Disposals/Transfers (109) (118)
Reclassifications to Nonaccretable Difference 797 912
Accretable Yield, End of Period $ 4,644 $ 4,990