v3.26.1
Investment Securities - Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Schedule of Held-to-maturity Securities [Line Items]    
Allowance for credit loss related to held-to-maturity securities $ 0 $ 0
Investment grade percentage 96.00% 97.00%
Non-agency CMBS    
Schedule of Held-to-maturity Securities [Line Items]    
Allowance for credit loss related to held-to-maturity securities $ 62 $ 60