v3.26.3
Loss and Loss Adjustment Expense Reserves - Reconciliation of Losses and Loss Adjustment Expenses (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]        
Reserve for losses and LAE gross of reinsurance recoverables on unpaid losses and LAE as of beginning of the period     $ 420.4 $ 350.0
Reinsurance recoverables on unpaid losses and LAE     (289.0) (229.9)
Reserve for losses and LAE, net of reinsurance recoverables as of beginning of the period     131.4 120.1
Add: Incurred losses and LAE, net of reinsurance, related to:        
Current year     184.6 195.0
Prior years     (4.6) (10.6)
Total incurred $ 72.7 $ 47.5 180.0 184.4
Deduct: Loss and LAE payments, net of reinsurance, related to:        
Current year     78.1 120.6
Prior year     49.5 57.2
Total paid     127.6 177.8
Reserve for losses and LAE, net of reinsurance recoverables at end of period 183.8 126.7 183.8 126.7
Add: Reinsurance recoverables on unpaid losses and LAE at end of period 458.9 257.7 458.9 257.7
Reserve for losses and LAE gross of reinsurance recoverables on unpaid losses and LAE as of end of the period $ 642.7 $ 384.4 $ 642.7 $ 384.4