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Leases - Future Minimum Lease Payments (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Maturity of Lease Liabilities  
2021 $ 31.7
2022 27.3
2023 21.5
2024 17.6
2025 16.8
Thereafter 103.5
Total undiscounted lease payments 218.4
Less: Present value adjustment (41.7)
Present value of lease liabilities $ 176.7