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Unpaid Loss and Loss Adjustment Expense (Tables)
 6 Months Ended
Jun. 30, 2024
Insurance [Abstract]  
Activity in the liability for unpaid loss and LAE
The following table presents the activity in the liability for unpaid loss and loss adjustment expense ("LAE") for the six months ended June 30, 2024 and 2023 ($ in millions):
June 30,
20242023
Unpaid loss and LAE at beginning of period$262.3 $256.2 
Less: Reinsurance recoverable at beginning of period (1)
120.2 124.6 
Net unpaid loss and LAE at beginning of period142.1 131.6 
Add: Incurred loss and LAE, net of reinsurance, related to:
Current year145.0 140.8 
Prior years(8.6)(1.3)
Total incurred136.4 139.5 
Deduct: Paid loss and LAE, net of reinsurance, related to:
Current year82.1 75.0 
Prior years51.9 59.7 
Total paid134.0 134.7 
Unpaid loss and LAE, net of reinsurance recoverable, at end of period144.5 136.4 
Reinsurance recoverable at end of period (1)
137.7 119.2 
Unpaid loss and LAE, gross of reinsurance recoverable, at end of period$282.2 $255.6 

(1) Reinsurance recoverable in this table includes only ceded unpaid loss and LAE.