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Inventories (Details) - USD ($)
$ in Millions
Jun. 30, 2016
Dec. 31, 2015
Inventory Disclosure [Abstract]    
Raw materials $ 56.6 $ 47.1
In process 37.8 33.4
Finished products 118.7 98.2
Other 20.7 20.1
Total inventories $ 233.8 $ 198.8