v3.26.1
Reinsurance - Effects Of Reinsurance (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Premiums and other considerations:        
Premiums and other considerations, Direct $ 1,612.9 $ 1,538.1 $ 2,889.3 $ 3,421.5
Premiums and other considerations, Ceded (152.1) (141.6) (280.4) (273.7)
Net premiums and other considerations 1,460.8 1,396.5 2,608.9 3,147.8
Benefits, claims and settlement expenses:        
Benefits, claims and settlement expenses, Direct 2,406.9 2,322.3 4,442.4 4,920.3
Benefits, claims and settlement expenses, Ceded (414.8) (482.4) (839.2) (860.4)
Net benefits, claims and settlement expenses 1,992.1 1,839.9 3,603.2 4,059.9
LFPB remeasurement (gain) loss:        
LFPB remeasurement (gain) loss, Direct 22.9 (11.8) 24.0 (5.7)
LFPB remeasurement (gain) loss, Ceded (15.5) 7.5 (31.3) 3.6
Net LFPB remeasurement (gain) loss $ 7.4 $ (4.3) $ (7.3) $ (2.1)