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Long-Term Debt - Long-Term Debt Maturities (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Debt Disclosure [Abstract]  
2021 $ 70.9
2022 15.0
2023 14.9
2024 589.9
2025 614.9
Thereafter 2,648.8
Total debt maturities $ 3,954.4