Quarterly report pursuant to Section 13 or 15(d)

Mortgage Servicing Rights (Details)

v2.4.0.6
Mortgage Servicing Rights (Details) (USD $)
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2012
Commercial and Residential Reverse Mortgage [Member]
Dec. 31, 2011
Commercial and Residential Reverse Mortgage [Member]
Servicing Assets at Fair Value [Line Items]        
Servicing Asset at Amortized Cost     $ 134,000,000 $ 132,000,000
Activity for residential first mortgage MSRs        
Balance, January 1 7,378,000,000 14,900,000,000    
Additions 77,000,000 841,000,000    
Impact of customer payments (521,000,000) [1] (706,000,000) [1]    
Impact of changes in interest rates and other market factors 975,000,000 [2] 709,000,000 [2]    
Model and other cash flow assumption changes:        
Projected cash flows, primarily due to increases in cost to service loans (273,000,000) [3] (528,000,000) [3]    
Impact of changes in the Home Price Index 15,000,000 [3] 222,000,000 [3]    
Impact of changes to the prepayment model    [3] (177,000,000) [3]    
Other model changes (62,000,000) [3] 21,000,000 [3]    
Balance, March 31 7,589,000,000 15,282,000,000    
Mortgage loans serviced for investors (in billions) $ 1,313,000,000,000 $ 1,610,000,000,000    
[1] Represents the change in the market value of the MSR asset due to the impact of customer payments received during the period.
[2] These amounts reflect the changes in modeled MSR fair value primarily due to observed changes in interest rates, volatility, spreads and the shape of the forward swap curve.
[3] These amounts reflect periodic adjustments to the valuation model as well as changes in certain cash flow assumptions such as costs to service and ancillary income per loan.