v3.25.1
Loss and Loss Adjustment Expense Reserves (Tables)
3 Months Ended
Mar. 31, 2025
Insurance [Abstract]  
Summary of loss and LAE reserve activity
The following table summarizes the loss and loss adjustment expense (“LAE”) reserve activity of the Ark/WM Outrigger segment for the three months ended March 31, 2025 and 2024:

Three Months Ended March 31,
Millions20252024
Gross beginning balance$2,127.5 $1,605.1 
Less: beginning reinsurance recoverable on unpaid losses(434.4)(340.8)
Net loss and LAE reserves1,693.1 1,264.3 
Loss and LAE incurred relating to:
Current year losses286.3 180.3 
Prior year losses(52.8)(.3)
Net incurred loss and LAE233.5 180.0 
Loss and LAE paid relating to:
Current year losses(83.2)(4.0)
Prior year losses(75.8)(96.7)
Net paid loss and LAE(159.0)(100.7)
Foreign currency translation and other adjustments to loss and LAE reserves5.7 (3.6)
Net ending balance1,773.3 1,340.0 
Plus: ending reinsurance recoverable on unpaid losses480.6 404.5 
Gross ending balance$2,253.9 $1,744.5