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Leases - Summary of Minimum Non-Cancelable Operating Lease Commitments (Details)
$ in Millions
Dec. 31, 2018
USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity  
2019 $ 19.2
2020 15.5
2021 11.9
2022 9.7
2023 7.7
Thereafter 27.9
Total $ 91.9