Inventories (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Inventories
Raw materials and supplies	$ 437.8	$ 479.2
Work-in-process and finished goods	504.2	579.2
Less inventory reserves	(43.6)	(41.7)
Inventories, net	$ 898.4	$ 1,016.7