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Debt - Scheduled Maturities (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Sep. 30, 2019
Debt    
2020 (six months remaining) $ 39.8  
2021 25.2  
2022 269.9  
2023 13.2  
2024 4.7  
Thereafter 1,800.3  
Total debt $ 2,153.1 $ 3,352.5