Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Inventories
Raw materials and supplies	$ 654.0	$ 607.0
Work-in-process and finished goods	820.0	839.0
Less inventory reserves	(41.0)	(33.0)
Inventories, net	$ 1,433.0	$ 1,413.0