v3.26.1
Borrowed Funds - Narrative (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Debt Disclosure [Abstract]    
Interest payable $ 41 $ 39
FHLB lockout period 5 years  
Advances and letters of credit $ 8,300 8,300
Total long-term debt $ 6,686 $ 8,184