v3.26.1
Future Policy Benefits and Claims - Liability for Unpaid Claims (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Change in unpaid claims    
Balance at beginning of period, unpaid claims $ 1,342.4 $ 1,379.9
Balance at beginning of period, reinsurance recoverables for unpaid claims 62.6 61.2
Net balance at beginning of period, unpaid claims 1,279.8 1,318.7
Incurred:    
Incurred: Current year 932.0 926.1
Incurred: Prior years (83.3) (71.1)
Total incurred 848.7 855.0
Payments:    
Payments: Current year 625.4 615.5
Payments: Prior years 241.1 254.1
Total payments 866.5 869.6
Net balance at end of period, unpaid claims 1,262.0 1,304.1
Balance at end of period, reinsurance recoverables for unpaid claims 61.7 59.7
Balance at end of period, unpaid claims $ 1,323.7 $ 1,363.8