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Inventories (Details) - USD ($)
$ in Millions
Sep. 30, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Raw materials $ 63.5 $ 56.3
In process 64.4 49.1
Finished products 173.6 144.5
Other 35.0 31.2
Total inventory $ 336.5 $ 281.1