Derivative Financial Instruments (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 30, 2017	Dec. 31, 2016	Oct. 01, 2016	Sep. 01, 2015
Derivative [Line Items]
Derivative, Notional Amount	$ 51.3		$ 51.3
Contract maturity date			Dec. 24, 2019
Foreign currency forward contracts entered	7.2	$ 6.7	$ 7.2	$ 6.7
Foreign currency forward contracts settled	11.2	$ 5.0	16.6	$ 10.2
Derivative, Fixed Interest Rate					1.97%
Net amount of existing losses expected to be reclassified into earnings within the next 12 months	$ 3.0		$ 3.0
Interest Rate Swap
Derivative [Line Items]
Derivative, Notional Amount						$ 25.0