v3.25.2
Medium- And Long-Term Debt (Narrative) (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Debt Disclosure [Abstract]    
Total FHLB borrowings $ 5,000  
Potential future borrowings 11,900  
Unamortized debt issuance cost $ 9 $ 10