v3.26.1
Reinsurance (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Fronting    
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]    
Gross losses and loss adjustment expenses $ 1,200.0 $ 957.5