Restructuring expenses (Textuals) (Details) $ in Thousands	12 Months Ended
	Jul. 01, 2017 USD ($) employee	Jul. 02, 2016 USD ($)
Electronic Components
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 28,400
Premier Farnell
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	3,000
Business Support
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 10,300
Fiscal Year 2017 Restructuring Liabilities
Restructuring Cost and Reserve [Line Items]
Number of employee reductions under Severance charges | employee	350
Restructuring expenses	$ 41,719
Restructuring Reserve	12,262
Fiscal Year 2016 Restructuring Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	2,791	$ 10,987
Fiscal Year 2015 And Prior Restructuring Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 1,900	$ 4,500