Inventories - Components of Inventories (Details) - USD ($) $ in Millions		Sep. 30, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Finished goods		$ 80.0	$ 77.6
Raw materials		54.3	35.3
Work in process		9.6	7.2
Total inventories	[1]	$ 143.9	$ 120.1

[1] Amounts at September 30, 2017 include inventories acquired in the TBEI acquisition - see Note 2 – Acquisitions.