Accumulated Other Comprehensive (Loss) Income - Reclassifications Out of Accumulated Other Comprehensive (Loss) Income (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jan. 02, 2016	Oct. 03, 2015	Jul. 04, 2015	Apr. 04, 2015	Jan. 03, 2015	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of Sales	$ (477.7)	$ (523.1)	$ (539.2)	$ (508.5)	$ (471.7)	$ (465.5)	$ (470.2)	$ (418.9)	$ (2,048.5)	$ (1,826.3)	$ (1,818.6)
Income tax (expense) benefit									22.7	61.4	(1.8)
Net (loss) income									20.6	16.4	$ 22.0
Reclassification Out of Accumulated Other Comprehensive (Loss) Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net (loss) income									(1.1)	(1.0)
Reclassification Out of Accumulated Other Comprehensive (Loss) Income [Member] | Gains and Losses on Derivative Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of Sales									(1.5)	(1.0)
Total before taxes									(1.5)	(1.0)
Income tax (expense) benefit									0.8	0.3
Net (loss) income									(0.7)	(0.7)
Reclassification Out of Accumulated Other Comprehensive (Loss) Income [Member] | Pension Benefit Plan Items [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Prior service costs									(0.1)	(0.1)
Actuarial adjustments									0.0	0.0
Actuarial (losses)/gains									(0.4)	(0.3)
Total before taxes									(0.5)	(0.4)
Income tax (expense) benefit									0.1	0.1
Net (loss) income									$ (0.4)	$ (0.3)