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LEASES Total Minimum Lease Payments as of December 31, 2018 (Details) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Leases [Abstract]    
2019 $ 16.1 $ 22.2
2020 16.5 16.8
2021 12.5 12.6
2022 10.2 10.2
2023 8.1 8.1
2024 and thereafter 47.1 46.4
Total minimum lease payments $ 110.5 $ 116.3