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
9 Months Ended
Sep. 30, 2013
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% $ 303
Change in Fair Value, Impact of 20% 639
Change in Fair Value, Impact of 100 bps 261
Change in Fair Value, Impact Of 200 bps 545
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% (275)
Change in Fair Value, Impact of 20% (526)
Change in Fair Value, Impact of 100 bps (240)
Change in Fair Value, Impact Of 200 bps $ (461)
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 5 months 1 day
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 24 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 27 days
Impact of 20 percent change 3 months 21 days