XML 102 R61.htm IDEA: XBRL DOCUMENT v3.23.1
Goodwill Mortgage Servicing Rights (Commercial and Residential Mortgage Servicing Rights - Key Valuation Assumptions) (Details)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
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 $ 3,293 $ 3,423    
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 $ 1,061 $ 1,113 $ 886 $ 740
Weighted-average life (years) 3 years 10 months 24 days 4 years    
Decline in fair value from 10% adverse change in prepayment rate $ 8 $ 8    
Decline in fair value from 20% adverse change in prepayment rate 14 15    
Decline in fair value from 10% adverse change in interest rate 31 34    
Decline in fair value from 20% adverse change in interest rate 63 68    
Mortgage Servicing Rights | Residential mortgage loans held for sale        
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 $ 2,232 $ 2,310 $ 1,322 $ 1,078
Weighted-average life (years) 7 years 8 months 12 days 8 years    
Decline in fair value from 10% adverse change in prepayment rate $ 57 $ 55    
Decline in fair value from 20% adverse change in prepayment rate $ 111 $ 107    
Spread over the benchmark curve 7.68% 7.66%    
Decline in fair value from 10% adverse change in adjusted spread $ 66 $ 69    
Decline in fair value from 20% adverse change in adjusted spread $ 129 $ 134    
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 0.0439 0.0428    
Mortgage Servicing Rights | Measurement Input, Constant Prepayment Rate | Residential mortgage loans held for sale        
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 0.0722 0.0672    
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 0.0954 0.0977