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
3 Months Ended
Mar. 31, 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% $ 262
Change in Fair Value, Impact of 20% 552
Change in Fair Value, Impact of 100 bps 236
Change in Fair Value, Impact Of 200 bps 494
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% (239)
Change in Fair Value, Impact of 20% (457)
Change in Fair Value, Impact of 100 bps (217)
Change in Fair Value, Impact Of 200 bps $ (418)
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 5 months 1 day
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 2 months 1 day
Impact of 20 percent change 3 months 25 days