Schedule of Derivatives not Designated as Hedging Instruments (Detail) (Not Designated as Hedging Instrument, USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 29, 2015	Dec. 28, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	$ 28.7	$ 28.6
Fair Value	(0.1)	0.1
Amount of Gain (Loss) Recognized In Income	(0.3)
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	(0.4)
Foreign Exchange Contracts | Current Assets
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	5.7	8.5
Fair Value		0.1
Foreign Exchange Contracts | Current Liabilities
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount	23.0	20.1
Fair Value	$ (0.1)