Accumulated Other Comprehensive (Loss) Income - Reclassifications Out of Accumulated Other Comprehensive (Loss) Income (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of sales	$ (287.3)	$ (268.1)
Income tax (expense) benefit	(0.9)	(1.7)
Net income (loss)	362.0	(34.4)
Foreign currency translation adjustments	(9.4)
Reclassification Out of Accumulated Other Comprehensive (Loss) Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	(27.2)	0.6
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	(0.9)	0.7
Total before taxes	(0.9)	0.7
Income tax (expense) benefit	0.0	0.0
Net income (loss)	(0.9)	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]
Amortization of pension benefit plan items Recognized net actuarial loss	(16.9)
Prior service costs		(0.1)
Total before taxes	(16.9)	(0.1)
Income tax (expense) benefit	0.0	0.0
Net income (loss)	$ (16.9)	$ (0.1)