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Debt - Aggregate Annual Maturities of Long-term Debt (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Debt Disclosure [Abstract]    
2021 $ 57.3  
2022 70.1  
2023 94.9  
2024 144.9  
2025 93.1  
Thereafter 902.2  
Total Debt $ 1,362.4 $ 1,501.6