Schedule of Other Expense Net (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Components of Other Income (Expense) [Line Items]
Interest expense	$ 1.5	$ 1.5	$ 4.9	$ 4.8
Interest income	(0.1)	(0.2)	(0.5)	(0.5)
Other, net	0.1	0.1	0.8	3.3
Other expense, net	$ 1.5	$ 1.4	$ 5.2	$ 7.6