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Debt - Schedule of Maturities of Long-term Debt (Details)
$ in Millions
Dec. 31, 2017
USD ($)
Debt Disclosure [Abstract]  
2018 $ 72.4
2019 92.9
2020 59.3
2021 442.1
2022 5.7
Thereafter 1,090.1
Total $ 1,762.5