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PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Property, Plant and Equipment [Abstract] |  |  |  |
Interest costs capitalized adjustment | $ 0.1 | $ 0.1 | $ 0.2 | $ 0.4
Depreciation inclusive of amortization | $ 65.5 | $ 64.2 | $ 131.4 | $ 129.8

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