Schedule of Other Expense Net (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012
Components of Other Income (Expense) [Line Items]
Interest expense	$ 1.5	$ 1.7	$ 4.8	$ 5.7
Interest income	(0.2)	(0.6)	(0.5)	(1.8)
Other (income) expense, net	0.1	0.1	3.3	0.3
Other expense, net	$ 1.4	$ 1.2	$ 7.6	$ 4.2