Inventories (Details) - USD ($) $ in Millions	Dec. 31, 2017		Dec. 31, 2016
Inventory Disclosure [Abstract]
Finished goods	$ 74.3		$ 77.6
Raw materials	52.6		35.3
Work in process	10.3		7.2
Total inventories	$ 137.2	[1]	$ 120.1

[1] Amounts at December 31, 2017 include inventories acquired in the TBEI acquisition - see Note 2 – Acquisitions.