Schedule of Other Expense Net (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014
Components of Other Income (Expense) [Line Items]
Interest expense	$ 1.5	$ 2.1	$ 2.8	$ 3.4
Interest income	(0.1)	(0.2)	(0.3)	(0.4)
Other, net	0.2	0.7	0.3	0.7
Other expense, net	$ 1.6	$ 2.6	$ 2.8	$ 3.7