Segment information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 28, 2019	Dec. 29, 2018
Sales, by segment
Sales	$ 4,534,806	$ 5,048,980	$ 9,164,814	$ 10,138,859
Operating income (expense):
Restructuring, integration and other expenses	(14,265)	(62,260)	(38,863)	(77,048)
Amortization of acquired intangible assets and other	(21,454)	(20,513)	(41,532)	(41,440)
Operating income	46,475	96,050	109,212	242,866
Segment
Operating income (expense):
Operating income	113,098	198,195	247,189	400,900
Corporate
Operating income (expense):
Corporate	(30,904)	(19,372)	(57,582)	(39,546)
Electronic Components | Segment
Sales, by segment
Sales	4,203,629	4,680,714	8,497,815	9,391,540
Operating income (expense):
Operating income	93,144	158,551	205,430	320,464
Farnell | Segment
Sales, by segment
Sales	331,177	368,266	666,999	747,319
Operating income (expense):
Operating income	$ 19,954	$ 39,644	$ 41,759	$ 80,436