Restructuring expenses (Textuals) (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2018 USD ($) employee	Jul. 01, 2017 USD ($)
Fiscal Year 2018 Restructuring Liabilities
Restructuring Cost and Reserve [Line Items]
Number of employee reductions under Severance charges | employee	900
Restructuring expenses	$ 60,618
Restructuring Reserve	26,014
Fiscal Year 2018 Restructuring Liabilities | Electronic Components
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	47,100
Fiscal Year 2018 Restructuring Liabilities | Premier Farnell
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	10,600
Fiscal Year 2018 Restructuring Liabilities | Business Support
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	2,900
Fiscal Year 2017 And Prior Restructuring Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 3,210	$ 16,995