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Components Of Net Inventories (Detail) - USD ($)
$ in Millions
Sep. 28, 2018
Dec. 29, 2017
[1]
Inventory, Net [Abstract]    
Raw materials $ 93.3 $ 85.2
Work-in-process 13.2 12.4
Finished goods 179.8 167.0
Total inventories $ 286.3 $ 264.6 [2]
[1] See Note 2 for a summary of adjustments
[2] See Note 2 for a summary of adjustments