v3.26.1
Loss and loss adjustment expense reserves (Tables)
6 Months Ended
Jun. 30, 2026
Insurance [Abstract]  
Schedule of Loss and Loss Adjustment Expense Reserves
The following table represents the activity in the loss and loss adjustment expense reserves for the three and six months ended June 30, 2026 and 2025:
June 30,
2026
June 30,
2025
Gross reserves for loss and loss adjustment expenses, beginning of period$5,782.5 $5,653.9 
Less: loss and loss adjustment expenses recoverable, beginning of period(2,102.3)(2,315.3)
Less: deferred gains (charges) on retroactive reinsurance contracts (2)
— 8.5 
Net reserves for loss and loss adjustment expenses, beginning of period3,680.2 3,347.1 
Increase (decrease) in net loss and loss adjustment expenses incurred in respect of losses occurring in:
     Current year754.0 817.3 
     Prior years (32.9)(42.9)
Total incurred loss and loss adjustment expenses721.1 774.4 
Net loss and loss adjustment expenses paid in respect of losses occurring in:
     Current year(234.7)(297.9)
     Prior years(396.7)(325.7)
Total net paid losses(631.4)(623.6)
Foreign currency translation(11.0)55.6 
Net reserves for loss and loss adjustment expenses, end of period3,758.9 3,553.5 
Plus: loss and loss adjustment expenses recoverable, end of period1,991.4 2,263.9 
Gross reserves for loss and loss adjustment expenses, end of period$5,750.3 $5,817.4 
(1)Deferred gains on retroactive reinsurance were previously presented as a separate line item on the Company’s consolidated balance sheets. As of June 30, 2026 and December 31, 2025, the deferred gain is fully amortized.