v3.26.1
Mortgage Servicing Assets - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Agency commercial mortgage-backed securities    
Servicing Assets at Fair Value [Line Items]    
Contractual fee income from servicing commercial mortgage loans $ 174 $ 209
Amortization of servicing commercial mortgage loans 63 62
Residential mortgage-backed securities    
Servicing Assets at Fair Value [Line Items]    
Contractual fee income from servicing commercial mortgage loans 17 20
Amortization of servicing commercial mortgage loans $ 7 $ 6