Summary of Significant Accounting Policies - Impact of the Reclassification to Selling, General and Administrative Expenses from Cost of Sales as Presented in the Consolidated Statement of Operations (Detail) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Jan. 03, 2015	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Decrease to cost of sales		$ (4.8)	$ (0.2)
Decrease to SG&A expenses		$ (0.2)	(0.1)
Increase to property, plant and equipment, net	$ 8.9
Reclassification [Member]
Decrease to cost of sales				$ (22.7)
Increase to SG&A expenses				22.7
Decrease to SG&A expenses			(41.3)	(3.1)
Increase to acquisition and integration expenses			$ 41.3	$ 3.1
Decrease to inventories	(8.9)
Increase to property, plant and equipment, net	$ 8.9