Restructuring - Restructuring Related Costs Included in Selling, General & Administrative expenses on Consolidated Statements of Income (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 28, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 0.7	$ 0.0
Severance and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring costs	0.8	0.0
Other
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ (0.1)	$ 0.0