Inventories (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Inventory [Line Items]
Inventory, Raw Materials and Supplies, Gross	$ 97.2	$ 65.7
Inventory, Work in Process, Gross	37.4	31.6
Inventory, Finished Goods, Gross	74.3	72.4
Inventories, net	208.9	169.7
Inventory Valuation Reserves	8.5	$ 10.1
Hudson [Member]
Inventory [Line Items]
Inventory, Raw Materials and Supplies, Gross	21.3
Inventories, net	$ 23.1