XML 182 R91.htm IDEA: XBRL DOCUMENT v3.22.4
Goodwill and Mortgage Servicing Rights (Commercial and Residential Mortgage Loan Servicing Assets - Key Valuation Assumptions) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
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]        
Fair Value $ 3,423 $ 1,818    
Mortgage Servicing Rights | Commercial real estate        
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]        
Fair Value $ 1,113 $ 740 $ 569 $ 649
Weighted-average life 4 years 4 years 2 months 12 days    
Decline in fair value from 10% adverse change in prepayment rate $ 8 $ 12    
Decline in fair value from 20% adverse change in prepayment rate 15 21    
Decline in fair value from 10% adverse change in interest rate 34 20    
Decline in fair value from 20% adverse change in interest rate 68 40    
Mortgage Servicing Rights | Residential Mortgages        
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]        
Fair Value $ 2,310 $ 1,078 $ 673 $ 995
Weighted-average life 8 years 5 years 8 months 12 days    
Decline in fair value from 10% adverse change in prepayment rate $ 55 $ 46    
Decline in fair value from 20% adverse change in prepayment rate $ 107 $ 89    
Spread over the benchmark curve 7.66% 8.57%    
Decline in fair value from 10% adverse change in adjusted spread $ 69 $ 31    
Decline in fair value from 20% adverse change in adjusted spread $ 134 $ 60    
Mortgage Servicing Rights | Measurement Input, Constant Prepayment Rate | Commercial real estate        
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]        
Servicing asset, measurement input 0.0428 0.0549    
Mortgage Servicing Rights | Measurement Input, Constant Prepayment Rate | Residential Mortgages        
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]        
Servicing asset, measurement input 0.0672 0.1263    
Mortgage Servicing Rights | Measurement Input, Discount Rate | Commercial real estate        
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]        
Servicing asset, measurement input 0.0977 0.0775