Business and Recent Accounting Pronouncements - Impact of the Reclassification to Selling, General and Administrative Expenses from Cost of Sales as Presented in the Consolidated Statement of Operations (Detail) - Adjustments [Member] - USD ($) $ in Millions		3 Months Ended	6 Months Ended
	Jan. 03, 2015	Jun. 28, 2014	Jun. 28, 2014
Decrease to cost of sales		$ (5.8)	$ (11.5)
Increase to SG&A expenses		5.8	11.5
Decrease to SG&A expenses		(1.8)	(2.9)
Increase to acquisition and integration expenses		$ 1.8	$ 2.9
Decrease to inventories	$ (8.9)
Increase to property, plant and equipment, net	$ 8.9