Restructuring expenses (Textuals) (Details) $ in Thousands	12 Months Ended
	Jun. 27, 2020 USD ($) employee	Jun. 29, 2019 USD ($)
Fiscal Year 2020 Restructuring Liabilities
Restructuring Cost and Reserve [Line Items]
Number of employee reductions under Severance charges | employee	500
Restructuring expenses	$ 45,543
Restructuring Reserve	11,712
Fiscal Year 2020 Restructuring Liabilities | Electronic Components
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	32,400
Fiscal Year 2020 Restructuring Liabilities | Farnell
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	10,200
Fiscal Year 2020 Restructuring Liabilities | Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	2,900
Fiscal Year 2019 And Prior Restructuring Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 5,230	$ 26,918