Revenues from contracts with customers - Schedule of Revenues by End Market and Product (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 29, 2024	Mar. 31, 2023	Mar. 29, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Revenues	$ 731,535	$ 665,281	$ 2,129,706	$ 1,989,366
Revenue from contract with customer benchmark | Geographic concentration risk
Disaggregation of Revenue [Line Items]
Revenues, percentage	100.00%	100.00%	100.00%	100.00%
Revenue from contract with customer benchmark | Product concentration risk
Disaggregation of Revenue [Line Items]
Revenues, percentage	100.00%	100.00%	100.00%	100.00%
Optical communications
Disaggregation of Revenue [Line Items]
Revenues	$ 591,448	$ 502,615	$ 1,692,639	$ 1,506,232
Optical communications | Revenue from contract with customer benchmark | Product concentration risk
Disaggregation of Revenue [Line Items]
Revenues, percentage	80.90%	75.50%	79.50%	75.70%
Datacom
Disaggregation of Revenue [Line Items]
Revenues	$ 305,478	$ 122,385	$ 835,642	$ 328,271
Telecom
Disaggregation of Revenue [Line Items]
Revenues	285,970	380,230	856,997	1,177,961
Non-optical communications
Disaggregation of Revenue [Line Items]
Revenues	$ 140,087	$ 162,666	$ 437,067	$ 483,134
Non-optical communications | Revenue from contract with customer benchmark | Product concentration risk
Disaggregation of Revenue [Line Items]
Revenues, percentage	19.10%	24.50%	20.50%	24.30%
Automotive
Disaggregation of Revenue [Line Items]
Revenues	$ 73,636	$ 94,107	$ 241,166	$ 275,704
Industrial laser
Disaggregation of Revenue [Line Items]
Revenues	30,319	31,040	90,582	97,396
Others
Disaggregation of Revenue [Line Items]
Revenues	$ 36,132	$ 37,519	$ 105,319	$ 110,034