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Leases - Components of Lease Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Leases [Abstract]      
Operating lease cost $ 12.7 $ 10.1 $ 8.2
Short-term lease cost 0.7 0.5 0.3
Variable lease cost 0.0 0.2 0.6
Finance lease cost:      
Depreciation on leased assets 2.2 0.7 0.4
Interest on lease liabilities 3.4 3.1 3.0
Total lease cost $ 19.0 $ 14.6 $ 12.5