Schedule of Derivatives not Designated as Hedging Instruments (Detail) - Not Designated as Hedging Instrument - USD ($) $ in Millions	6 Months Ended
	Jun. 26, 2016	Jun. 28, 2015	Dec. 27, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount			$ 20.1
Fair Value	$ 0.0		0.0
Amount of Gain (Loss) Recognized In Income	(0.6)	$ (0.6)
Total revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized In Income		0.1
Expenses
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized In Income		$ (0.7)
Other Expense Net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized In Income	(0.6)
Other Current Assets
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount			14.7
Fair Value	0.0		0.0
Other Current Liabilities
Derivative Instruments, Gain (Loss) [Line Items]
Notional Amount			5.4
Fair Value	$ 0.0		$ 0.0