Goodwill and intangible assets Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 27, 2020	Jul. 03, 2021
Finite-Lived Intangible Assets [Line Items]
Acquired amount	$ 406,276	$ 439,409
Accumulated Amortization	(340,839)	(410,870)
Net Book Value	65,437	28,539
Intangible asset impairment	17,473
Customer related
Finite-Lived Intangible Assets [Line Items]
Acquired amount	300,937	324,416
Accumulated Amortization	(266,759)	(312,392)
Net Book Value	34,178	12,024
Trade name
Finite-Lived Intangible Assets [Line Items]
Acquired amount	51,698	57,184
Accumulated Amortization	(32,493)	(45,019)
Net Book Value	19,205	12,165
Other
Finite-Lived Intangible Assets [Line Items]
Acquired amount	53,641	57,809
Accumulated Amortization	(41,587)	(53,459)
Net Book Value	$ 12,054	$ 4,350