Restructuring, integration and other expenses (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jul. 02, 2016	Jun. 27, 2015	Jun. 28, 2014
Charges related to the acquisition and integration activities [Abstract]
Restructuring, integration and other expenses before tax	$ 79,318	$ 90,805	$ 94,623
Fiscal Year 2016 Restructuring Liabilities
Charges related to the acquisition and integration activities [Abstract]
Restructuring expenses	52,781
Integration costs	10,425
Other costs, including acquisition costs	19,784
Changes in estimates for prior year restructuring liabilities	(3,672)
Restructuring, integration and other expenses before tax	79,318
Restructuring, integration and other expenses after tax	$ 52,343
Restructuring, integration and other expenses per share on a diluted basis (in dollars per share)	$ 0.39
Fiscal Year 2015 Restructuring Liabilities
Charges related to the acquisition and integration activities [Abstract]
Restructuring expenses		58,677
Integration costs		19,144
Other costs, including acquisition costs		13,724
Changes in estimates for prior year restructuring liabilities		(740)
Restructuring, integration and other expenses before tax		90,805
Restructuring, integration and other expenses after tax		$ 65,897
Restructuring, integration and other expenses per share on a diluted basis (in dollars per share)		$ 0.47
Fiscal Year 2014 And Prior Restructuring Liabilities
Charges related to the acquisition and integration activities [Abstract]
Restructuring expenses			65,749
Integration costs			20,455
Other costs, including acquisition costs			8,767
Changes in estimates for prior year restructuring liabilities			(348)
Restructuring, integration and other expenses before tax			94,623
Restructuring, integration and other expenses after tax			$ 70,773
Restructuring, integration and other expenses per share on a diluted basis (in dollars per share)			$ 0.50