Components Of Net Inventories (Detail) - USD ($) $ in Millions	Jun. 29, 2018	Dec. 29, 2017	[1]
Inventory, Net [Abstract]
Raw materials	$ 91.3	$ 85.2
Work-in-process	11.6	12.4
Finished goods	179.5	167.0
Total inventories	$ 282.4	$ 264.6	[2],[3]

[1] See Note 2 for a summary of adjustments

[2] See Note 2 for a summary of adjustments

[3] See Note 2 for a summary of adjustments