v2.4.0.6
Mortgage Banking Activities, Liability for Mortage Loan Repurchase Losses (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Liability For Mortgage Loan Repurchase Losses [Abstract]    
Balance, beginning of period $ 1,326 $ 1,289
Loan sales 62 35
Change in estimate 368 214
Total additions 430 249
Losses (312) (331)
Balance, end of period $ 1,444 $ 1,207