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Inventories, Net (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Finished goods $ 49.8 $ 45.3
Semi-finished goods 45.6 48.8
Raw materials, supplies and other 25.5 19.3
Inventory, net $ 120.9 $ 113.4