Goodwill and intangible assets Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 27, 2020	Apr. 03, 2021
Finite-Lived Intangible Assets [Line Items]
Acquired amount	$ 406,276	$ 439,938
Accumulated Amortization	(340,839)	(406,168)
Net Book Value	65,437	33,770
Intangible asset impairment	17,473
Customer related
Finite-Lived Intangible Assets [Line Items]
Acquired amount	300,937	324,923
Accumulated Amortization	(266,759)	(312,189)
Net Book Value	34,178	12,734
Trade name
Finite-Lived Intangible Assets [Line Items]
Acquired amount	51,698	57,259
Accumulated Amortization	(32,493)	(42,788)
Net Book Value	19,205	14,471
Technology and other
Finite-Lived Intangible Assets [Line Items]
Acquired amount	53,641	57,756
Accumulated Amortization	(41,587)	(51,191)
Net Book Value	$ 12,054	$ 6,565