Segment information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 28, 2020	Mar. 30, 2019
Sales, by segment
Sales	$ 4,309,818	$ 4,698,824	$ 13,474,632	$ 14,837,683
Operating income (expense):
Restructuring, integration and other expenses	(19,211)	(2,939)	(58,073)	(79,986)
Goodwill and intangible asset impairment expense	(145,836)		(145,836)
Amortization of acquired intangible assets and other	(21,071)	(22,080)	(62,603)	(63,520)
Operating (loss) income	(115,760)	153,085	(6,548)	395,951
Segment
Operating income (expense):
Operating (loss) income	108,191	198,970	355,380	599,871
Corporate
Operating income (expense):
Corporate	(37,833)	(20,866)	(95,416)	(60,414)
Electronic Components | Segment
Sales, by segment
Sales	3,974,669	4,331,351	12,472,484	13,722,890
Operating income (expense):
Operating (loss) income	84,841	153,319	290,271	473,783
Farnell | Segment
Sales, by segment
Sales	335,149	367,473	1,002,148	1,114,793
Operating income (expense):
Operating (loss) income	$ 23,350	$ 45,651	$ 65,109	$ 126,088