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Leases - Maturities of Operating Lease Liabilities (Details)
$ in Millions
Mar. 31, 2019
USD ($)
Leases [Abstract]  
2019, remaining $ 19.2
2020 20.8
2021 16.4
2022 11.4
2023 6.1
2024 3.1
Thereafter 3.7
Total future lease payments 80.7
Less: Imputed interest 8.9
Total $ 71.8