Annual report pursuant to Section 13 and 15(d)

Mortgage Servicing Rights - Sensitivity Impacts (Details)

v3.3.1.900
Mortgage Servicing Rights - Sensitivity Impacts (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2015
USD ($)
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]  
Prepayment rates, impact of 10 percent decrease $ 183
Prepayment rates, impact of 20 percent decrease 389
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 10 Percent Increase in Prepayment Speed (163)
Sensitivity Analysis of Fair Value, Transferor's Interests in Transferred Financial Assets, Impact of 20 Percent Increase in Prepayment Speed (310)
OAS level, impact of 100 bps decrease 124
OAS level, impact of 200 bps decrease 259
OAS level, impact of 100 bps increase (115)
OAS level, impact of 200 bps increase $ (221)
Fixed  
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]  
Impact of 10 percent decrease 3 months 18 days
Impact of 20 percent decrease 7 months 21 days
Impact of 10 percent increase 3 months 4 days
Impact of 20 percent increase 6 months
Adjustable  
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]  
Impact of 10 percent decrease 3 months 4 days
Impact of 20 percent decrease 6 months 18 days
Impact of 10 percent increase 2 months 23 days
Impact of 20 percent increase 5 months 5 days