v2.4.0.8
Securitizations and Variable Interest Entities, Cash Flow Securitizations (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Mortgage loans [Member]
       
Cash Flow Securitizations [Abstract]        
Sales proceeds from securitizations $ 115,287 $ 133,764 $ 221,593 $ 276,869
Servicing fees 1,051 1,113 2,127 2,224
Other interests held 441 441 847 867
Purchases of delinquent assets 7 52 16 52
Net servicing advances 12 112 814 126
Other financial assets [Member]
       
Cash Flow Securitizations [Abstract]        
Sales proceeds from securitizations 0 0 0 0
Servicing fees 3 2 5 5
Other interests held 21 45 48 94
Purchases of delinquent assets 0 0 0 0
Net servicing advances $ 0 $ 0 $ 0 $ 0