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Other Assets (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Property and equipment $ 33.9 $ 34.9
Prepaid expenses 11.7 11.3
Claims receivable 1.6 5.6
Lease right-of-use assets 5.9 10.6
Deferred policy acquisition costs 9.7 0.0
Other 5.7 6.8
Total other assets $ 68.5 $ 69.2