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Leases - Maturity of Lease Liabilities (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Leases [Abstract]  
2021 $ 8.9
2022 7.9
2023 4.9
2024 1.9
2025 0.5
Thereafter 0.9
Total lease payments 25.0
Less: Imputed interest 1.3
Present value of operating lease liabilities $ 23.7