Segment information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jul. 02, 2016
Sales, by segment
Sales	$ 19,036,892	$ 17,439,963	$ 16,740,597
Operating income (expense):
Operating income (expense) before restructuring charges, integration, amortization of acquired intangible assets, and other	748,100	760,800	728,700
Restructuring, integration and other expenses (Note 14)	(145,125)	(137,415)	(44,761)
Impairment of goodwill	(181,440)	0	0
Amortization of acquired intangible assets and other	(91,900)	(54,500)	(9,800)
Operating income	230,516	461,400	572,912
Assets:
Assets	9,596,845	9,699,589	11,239,800
Capital expenditures:
Purchases of property, plant and equipment	155,873	120,397	137,375
Depreciation & amortization expense:
Depreciation and amortization expense	234,900	155,400	79,600
Corporate
Operating income (expense):
Corporate Overhead Expenses	(99,200)	(107,500)	(101,200)
Assets:
Assets	488,000	1,084,000	608,800
Capital expenditures:
Purchases of property, plant and equipment	9,300	23,100	36,500
Depreciation & amortization expense:
Depreciation and amortization expense	7,100	37,300	34,700
Electronic Components
Sales, by segment
Sales	17,543,600	16,474,100	16,740,600
Operating income (expense):
Impairment of goodwill	(181,440)
Capital expenditures:
Purchases of property, plant and equipment	127,500	81,600	100,900
Depreciation & amortization expense:
Depreciation and amortization expense	133,300	64,400	44,900
Electronic Components | Segment
Operating income (expense):
Operating income (expense) before restructuring charges, integration, amortization of acquired intangible assets, and other	587,300	661,000	728,700
Assets:
Assets	7,510,100	7,126,000	7,163,100
Premier Farnell
Sales, by segment
Sales	1,493,300	965,900
Capital expenditures:
Purchases of property, plant and equipment	19,100	15,700
Depreciation & amortization expense:
Depreciation and amortization expense	94,500	53,700
Premier Farnell | Segment
Operating income (expense):
Operating income (expense) before restructuring charges, integration, amortization of acquired intangible assets, and other	160,800	99,800
Assets:
Assets	$ 1,598,700	$ 1,489,600
Disposal Group, Disposed of by Sale, Not Discontinued Operations | TS Business
Assets:
Assets of discontinued operations			$ 3,467,900