Quarterly report pursuant to Section 13 or 15(d)

Mortgage Servicing Rights - Rollforward of Mortgage Servicing Rights (Details)

v3.4.0.3
Mortgage Servicing Rights - Rollforward of Mortgage Servicing Rights (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Activity for residential first mortgage MSRs    
Balance, January 1 $ 3,087 $ 3,530
Additions 136 179
Sales (1) 0
Amortization of expected cash flows (211) (230)
Impact of changes in interest rates and other market factors (376) (176)
Model and other cash flow assumption changes:    
Projected cash flows, including changes in costs to service loans 0 87
Impact of changes in the Home Price Index (10) (12)
Impact of changes to the prepayment model 0 9
Other model changes 6 7
Balance, end of period 2,631 3,394
Mortgage loans serviced for investors (in billions) 386,000 475,000
Consumer Portfolio Segment | United States    
Model and other cash flow assumption changes:    
Balance, end of period 2,200 3,100
Consumer Portfolio Segment | Non United States    
Model and other cash flow assumption changes:    
Balance, end of period $ 479 $ 286