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Unpaid Loss and Loss Adjustment Expense (Tables)
9 Months Ended
Sep. 30, 2020
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 nine months ended September 30, 2020 and 2019 ($ in millions):
Nine Months Ended
September 30,
20202019
Unpaid loss and LAE at beginning of period$28.2 $13.1 
Less: Reinsurance recoverable at beginning of period (1).
18.5 11.3 
Net unpaid loss and LAE at beginning of period9.7 1.8 
Add: Incurred loss and LAE, net of reinsurance, related to:
Current year44.1 32.2 
Prior years1.3 (1.8)
Total incurred45.4 30.4 
Deduct: Paid loss and LAE, net of reinsurance, related to:
Current year36.4 36.0 
Prior years11.0 (12.0)
Total paid47.4 24.0 
Unpaid loss and LAE, net of reinsurance recoverable, at end of period7.7 8.2 
Reinsurance recoverable at end of period (1)
32.0 16.4 
Unpaid loss and LAE, gross of reinsurance recoverable, at end of period$39.7 $24.6 
(1)    Reinsurance recoverable in this table includes only ceded unpaid loss and LAE