Restructuring expenses (Textuals) (Details) $ in Thousands	12 Months Ended
	Jun. 29, 2019 USD ($) employee	Jun. 30, 2018 USD ($)
Fiscal Year 2019 Restructuring Liabilities Member
Restructuring Cost and Reserve [Line Items]
Number of employee reductions under Severance charges | employee	600
Restructuring expenses	$ 95,519
Restructuring Reserve	23,648
Fiscal Year 2019 Restructuring Liabilities Member | Electronic Components
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	92,400
Fiscal Year 2019 Restructuring Liabilities Member | Farnell
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	2,000
Fiscal Year 2019 Restructuring Liabilities Member | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	1,100
Fiscal Year 2018 And Prior Restructuring Liabilities Member
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 3,270	$ 29,224