v2.4.0.6
Securitizations and Variable Interest Entities, Cash Flow Securitizations (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Mortgage loans [Member]
     
Cash Flow Securitizations [Abstract]      
Sales proceeds from securitizations $ 337,357 $ 374,488 $ 394,632
Servicing fees 4,401 4,316 4,283
Other interests held 1,779 1,786 3,757
Purchases of delinquent assets 9 25 45
Net servicing advances 29 49 257
Other financial assets [Member]
     
Cash Flow Securitizations [Abstract]      
Sales proceeds from securitizations 0 0 0
Servicing fees 11 34 42
Other interests held 263 442 310
Purchases of delinquent assets 0 0 0
Net servicing advances $ 0 $ 0 $ 0