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Inventories - Major Components of Inventory (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Finished goods $ 122.5 $ 118.5
Work in process 25.2 22.6
Raw materials and supplies 63.1 58.5
Total inventories $ 210.8 $ 199.6