v3.25.2
Reinsurance (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Fronting        
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]        
Gross losses and loss adjustment expenses $ 1,300.0 $ 593.9 $ 2,300.0 $ 1,200.0