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Leases - Components of Lease Expense (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Finance lease cost (cost resulting from lease payments)    
Interest expense on lease liabilities $ 0.7 $ 0.7
Amortization of right-of-use assets 0.9 0.9
Operating lease cost 10.6 8.4
Short-term lease expense 3.4 2.3
Variable lease expense 0.6 0.0
Total lease cost $ 16.2 $ 12.3