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Inventories - Components of Inventories (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Finished goods $ 93.7 $ 86.8
Raw materials 86.6 79.5
Work in process 21.1 16.6
Total inventories $ 201.4 $ 182.9