Quarterly report pursuant to Section 13 or 15(d)

Mortgage Servicing Rights (Details)

 v2.3.0.11
Mortgage Servicing Rights (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Mar. 31, 2011
Adjustable [Member]
Mar. 31, 2010
Adjustable [Member]
Activity for residential first mortgage MSRs            
Balance, January 1     $ 14,900,000,000 $ 19,465,000,000 $ 15,282,000,000 $ 18,842,000,000
Net additions 176,000,000 882,000,000 1,017,000,000 2,013,000,000    
Impact of customer payments (639,000,000) (981,000,000) (1,345,000,000) (2,037,000,000)    
Impact of changes in interest rates and other market factors (1,094,000,000) (3,817,000,000) (385,000,000) (4,000,000,000)    
Model and other cash flow assumption changes:            
Projected cash flows, primarily due to increases in cost to service loans (1,501,000,000) (524,000,000) (2,029,000,000) (1,076,000,000)    
Impact of changes in the Home Price Index 212,000,000 (34,000,000) 434,000,000 (34,000,000)    
Impact of changes to the prepayment model 303,000,000 385,000,000 126,000,000 427,000,000    
Other model changes (367,000,000) (8,000,000) (346,000,000) (13,000,000)    
Balance, June 30 12,372,000,000 14,745,000,000 12,372,000,000 14,745,000,000 15,282,000,000 18,842,000,000
Mortgage loans serviced for investors $ 1,578,000,000,000 $ 1,706,000,000,000 $ 1,578,000,000,000 $ 1,706,000,000,000