Goodwill and intangible assets Textuals (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 02, 2016	Jun. 27, 2015	Jun. 28, 2014
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill	$ 0	$ 0	$ 0
Weighted average life of intangible assets	4 years
Intangible asset amortization expense	$ 28,076	51,674	$ 44,724
Fiscal Year 2015 Restructuring Liabilities | Intangible Assets, Amortization Period
Finite-Lived Intangible Assets [Line Items]
Intangible asset amortization expense		$ 8,500