Revenue Recognition - Schedule of Percentage of Total Net Revenue Attributable to Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 02, 2022	Apr. 03, 2021	Apr. 02, 2022	Apr. 03, 2021
Concentration Risk
Net Revenue	$ 395.4	$ 419.5	$ 1,290.5	$ 1,350.7
Product offerings | OpComms
Concentration Risk
Net Revenue	$ 344.2	$ 387.9	$ 1,147.6	$ 1,265.5
Product offerings | OpComms | Revenue
Concentration Risk
Concentration risk (as a percent)	87.10%	92.50%	88.90%	93.70%
Product offerings | Lasers
Concentration Risk
Net Revenue		$ 31.6	$ 142.9	$ 85.2
Product offerings | Lasers | Revenue
Concentration Risk
Concentration risk (as a percent)	12.90%	7.50%	11.10%	6.30%
Telecom and Datacom | Product offerings | OpComms
Concentration Risk
Net Revenue	$ 243.5	$ 255.8	$ 726.6	$ 803.3
Telecom and Datacom | Product offerings | OpComms | Revenue
Concentration Risk
Concentration risk (as a percent)	61.60%	61.00%	56.30%	59.50%
Industrial and Consumer | Product offerings | OpComms
Concentration Risk
Net Revenue	$ 100.7	$ 132.1	$ 421.0	$ 462.2
Industrial and Consumer | Product offerings | OpComms | Revenue
Concentration Risk
Concentration risk (as a percent)	25.50%	31.50%	32.60%	34.20%