v3.26.1
Servicing of Financial Assets (Analysis Of Residential and Commerical MSRs Under The Fair Value Measurement Method) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Servicing Asset at Fair Value, Amount [Roll Forward]    
Carrying Value, beginning of period $ 970  
Carrying value, end of period 954  
Residential Mortgage    
Servicing Asset at Fair Value, Amount [Roll Forward]    
Carrying Value, beginning of period 970 $ 1,007
Additions 9 6
Servicing Asset, at fair value, purchases 4 4
Increase (decrease) in fair value, due to change in valuation inputs or assumptions 1 (10)
Increase (decrease) in fair value, economic amortization associated with borrower repayments (30) (28)
Carrying value, end of period 954 979
Commercial Real Estate    
Servicing Asset at Fair Value, Amount [Roll Forward]    
Carrying Value, beginning of period 93 97
Additions 5 2
Increase (decrease) in fair value, due to change in valuation inputs or assumptions 0 (1)
Increase (decrease) in fair value, economic amortization associated with borrower repayments (5) (4)
Carrying value, end of period $ 93 $ 94