Accumulated Other Comprehensive (Loss) Income - Reclassifications Out of Accumulated Other Comprehensive (Loss) Income (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of Sales	$ (471.5)	$ (478.2)	$ (1,373.4)	$ (1,414.4)
Total before taxes			2.0	34.7
Tax (expense) or benefit	(1.8)	(0.1)	(3.4)	(2.3)
Net income (loss)	1.7	13.3	(5.4)	32.4
Gains and Losses on Derivative Instruments [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of Sales	(0.1)	(0.1)	(0.1)	(0.5)
Reclassification Out of Accumulated Other Comprehensive (Loss) Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	(0.2)	0.2	(0.2)	(0.3)
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	(0.1)	0.1	0.1	0.3
Total before taxes	(0.1)	0.1	0.1	0.3
Tax (expense) or benefit	0	0	0	0
Net income (loss)	(0.1)	0.1	0.1	0.3
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	(0.3)	(0.2)
Actuarial adjustments	0	0	0	(0.1)
Actuarial losses	0	0	0	(0.1)
Total before taxes	(0.1)	0.1	(0.3)	(0.4)
Tax (expense) or benefit	0	0	0	(0.2)
Net income (loss)	$ (0.1)	$ 0.1	$ (0.3)	$ (0.6)