Restructuring expenses (Textuals) (Details) $ in Thousands	6 Months Ended
	Dec. 28, 2019 USD ($) employee	Jun. 29, 2019 USD ($)
Minimum
Restructuring Cost and Reserve [Line Items]
Number of employee reductions under Severance charges | employee	300
Fiscal Year 2020 Restructuring Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 27,826
Restructuring Reserve	8,600
Fiscal Year 2020 Restructuring Liabilities | Electronic Components
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	23,800
Fiscal Year 2020 Restructuring Liabilities | Farnell
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	4,000
Fiscal Year 2019 And Prior Restructuring Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 9,814	$ 26,918