Inventories - Summary of Inventories (Detail) - USD ($) $ in Millions	Dec. 30, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Raw materials	$ 68.1	$ 56.5
Finished goods	34.3	42.7
Resale items	21.8	22.0
Other	3.4	3.4
Total	$ 127.6	$ 124.6