Quarterly report pursuant to Section 13 or 15(d)

Mortgage Servicing Rights - Sensitivity Impacts (Details)

v2.4.0.8
Mortgage Servicing Rights - Sensitivity Impacts (Details) (USD $)
In Millions, unless otherwise specified
 6 Months Ended
Jun. 30, 2014
Decrease [Member]
  
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]  
Change in Fair Value, Impact of 10% $ 264
Change in Fair Value, Impact of 20% 558
Change in Fair Value, Impact of 100 bps 217
Change in Fair Value, Impact Of 200 bps 453
Increase [Member]
  
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]  
Change in Fair Value, Impact of 10% (238)
Change in Fair Value, Impact of 20% (455)
Change in Fair Value, Impact of 100 bps (199)
Change in Fair Value, Impact Of 200 bps $ (382)
Fixed [Member] | Decrease [Member]
  
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 change 2 months 26 days
Impact of 20 percent change 6 months 3 days
Fixed [Member] | Increase [Member]
  
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 change 2 months 19 days
Impact of 20 percent change 4 months 27 days
Adjustable [Member] | Decrease [Member]
  
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 change 2 months 8 days
Impact of 20 percent change 4 months 28 days
Adjustable [Member] | Increase [Member]
  
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 change 1 month 28 days
Impact of 20 percent change 3 months 22 days