Segment information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 30, 2018
Sales, by segment
Sales	$ 17,634,333	$ 19,518,592	$ 19,036,892
Operating income (expense):
Operating income (loss) before restructuring charges, integration, amortization of acquired intangible assets, and other	424,600	774,200	739,200
Restructuring, integration and other expenses	(81,870)	(108,144)	(145,125)
Goodwill and intangible asset impairment expenses	(144,092)	(137,396)	(181,440)
Amortization of acquired intangible assets and other	(81,600)	(84,300)	(91,900)
Operating (loss) income	(4,628)	365,911	209,218
Assets:
Assets	8,105,197	8,564,556	9,596,800
Capital expenditures:
Purchases of property, plant and equipment	73,516	122,690	155,873
Depreciation & amortization expense:
Depreciation and amortization expense	182,200	180,800	234,900
Corporate
Operating income (expense):
Corporate Overhead Expenses	(121,600)	(78,500)	(111,500)
Assets:
Assets	536,400	189,300	488,000
Capital expenditures:
Purchases of property, plant and equipment	7,600	8,600	9,300
Depreciation & amortization expense:
Depreciation and amortization expense	5,300	5,700	7,100
Electronic Components
Sales, by segment
Sales	16,340,100	18,060,300	17,543,600
Capital expenditures:
Purchases of property, plant and equipment	46,300	80,100	127,500
Depreciation & amortization expense:
Depreciation and amortization expense	88,400	86,600	133,300
Electronic Components | Segment
Operating income (expense):
Operating income (loss) before restructuring charges, integration, amortization of acquired intangible assets, and other	349,100	614,900	587,300
Assets:
Assets	6,096,700	6,795,000	7,510,100
Farnell
Sales, by segment
Sales	1,294,200	1,458,300	1,493,300
Capital expenditures:
Purchases of property, plant and equipment	19,600	34,000	19,100
Depreciation & amortization expense:
Depreciation and amortization expense	88,500	88,500	94,500
Farnell | Segment
Operating income (expense):
Operating income (loss) before restructuring charges, integration, amortization of acquired intangible assets, and other	75,500	159,300	151,900
Assets:
Assets	$ 1,472,100	$ 1,580,300	$ 1,598,700