Quarterly report pursuant to Section 13 or 15(d)

Inventories - Summary of Inventories (Detail)

v3.10.0.1
Inventories - Summary of Inventories (Detail) - USD ($)
$ in Millions
Sep. 30, 2018
Dec. 31, 2017
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 36.7 $ 23.2
Work-in-process 73.4 73.5
Finished goods 108.7 111.4
Total inventories $ 218.8 $ 208.1