v3.26.1
Loss and Loss Adjustment Expense Reserves (Tables)
6 Months Ended
Jun. 30, 2026
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 and six months ended June 30, 2026 and 2025:
Three Months Ended June 30,Six Months Ended June 30,
Millions2026202520262025
Gross beginning balance$2,585.6 $2,253.9 $2,481.0 $2,127.5 
Less: beginning reinsurance recoverable on unpaid losses(528.6)(480.6)(508.3)(434.4)
Net loss and LAE reserves2,057.0 1,773.3 1,972.7 1,693.1 
Loss and LAE incurred relating to:
Current year losses204.1 181.1 429.1 467.4 
Prior year losses(28.5)(17.1)(46.8)(69.9)
Net incurred loss and LAE175.6 164.0 382.3 397.5 
Loss and LAE paid relating to:
Current year losses(36.5)(29.5)(46.9)(112.7)
Prior year losses(141.4)(104.0)(249.9)(179.8)
Net paid loss and LAE(177.9)(133.5)(296.8)(292.5)
Foreign currency translation and other adjustments
   to loss and LAE reserves
(.9)16.2 (4.4)21.9 
Net ending balance2,053.8 1,820.0 2,053.8 1,820.0 
Plus: ending reinsurance recoverable on unpaid losses570.0 468.5 570.0 468.5 
Gross ending balance$2,623.8 $2,288.5 $2,623.8 $2,288.5