v3.26.3
Loss and Loss Adjustment Expense Reserves (Tables)
9 Months Ended
Sep. 30, 2026
Insurance [Abstract]  
Summary of loss and LAE reserve activity
The following table presents the loss and loss adjustment expense (“LAE”) reserve activity for the Ark/WM Outrigger segment for the three and nine months ended September 30, 2026 and 2025:
Three Months Ended September 30,Nine Months Ended September 30,
Millions2026202520262025
Gross beginning balance$2,623.8 $2,288.5 $2,481.0 $2,127.5 
Less: beginning reinsurance recoverable on unpaid losses(570.0)(468.5)(508.3)(434.4)
Net loss and LAE reserves2,053.8 1,820.0 1,972.7 1,693.1 
Loss and LAE incurred relating to:
Current year losses249.8 254.7 678.9 722.1 
Prior year losses(19.7)(.1)(66.5)(70.0)
Net incurred loss and LAE230.1 254.6 612.4 652.1 
Loss and LAE paid relating to:
Current year losses(50.8)(33.3)(97.7)(146.0)
Prior year losses(93.9)(84.9)(343.8)(264.7)
Net paid loss and LAE(144.7)(118.2)(441.5)(410.7)
Foreign currency translation and other adjustments
   to loss and LAE reserves
(.6)(1.0)(5.0)20.9 
Net ending balance2,138.6 1,955.4 2,138.6 1,955.4 
Plus: ending reinsurance recoverable on unpaid losses608.8 522.5 608.8 522.5 
Gross ending balance$2,747.4 $2,477.9 $2,747.4 $2,477.9