v3.26.1
Investment Securities - Allowance for Credit Losses, Available-for-Sale (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Debt Securities, Available-for-Sale, Allowance for Credit Loss [Roll Forward]    
Beginning balance $ 0.0 $ 0.4
Recovery of credit losses 0.0 (0.2)
Charge-offs 0.0 0.0
Recoveries 0.0 0.0
Ending balance $ 0.0 $ 0.2