Inventories (Schedule of Inventories) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Finished goods	$ 80.5	$ 72.0
Goods in process	3.3	4.2
Raw materials and supplies	32.4	32.0
Less LIFO and other reserves	(7.2)	(6.8)
Total inventories, net	$ 109.0	$ 101.4