Schedule of Derivatives not Designated as Hedging Instruments (Detail) (Not Designated as Hedging Instrument, USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Dec. 29, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	$ 25.6		$ 13.3
Fair Value	(0.1)
Amount of Gain (Loss) Recognized In Income	(0.2)	(0.6)
Foreign Exchange Contracts | Current Assets
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	2.5		2.3
Foreign Exchange Contracts | Current Liabilities
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	23.1		11.0
Fair Value	(0.1)
Foreign Exchange Contracts | Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized In Income		0.1
Foreign Exchange Contracts | Expenses
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized In Income	$ (0.2)	$ (0.7)