Derivative financial instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jun. 27, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (8,624)	$ 274	$ (3,139)
Foreign Exchange Forward
Derivative Instruments, Gain (Loss) [Line Items]
Average length of time of Foreign exchange contracts	56 days	55 days
Other expenses, net
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (35,000)
Equity securities | Other expenses, net | Not Designated as Hedging Instrument | Foreign Exchange Forward
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ (34,000)