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Inventories (Details) - USD ($)
$ in Millions
Jun. 30, 2015
Dec. 31, 2014
Inventory Disclosure [Abstract]    
Raw materials $ 83.3 $ 78.8
In process 47.3 47.2
Finished products 164.8 177.7
Other 27.4 29.1
Total inventories $ 322.8 $ 332.8