Operating Segments and Geographic Information - Schedule of Information on Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Jan. 01, 2022	Dec. 31, 2022	Jan. 01, 2022
Information on reportable segments
Net revenue	$ 506.0	$ 446.7	$ 1,012.8	$ 895.1
Gross profit	166.2	207.5	367.4	439.7
Stock-based compensation	(36.6)	(27.3)	(83.2)	(52.1)
Amortization of acquired intangibles	(36.1)	(21.5)	(68.3)	(42.9)
Gain recognized on disposition of land and building			(7.2)	5.0
Disposed of by Sale | Manufacturing Site | Equipment
Information on reportable segments
Gain recognized on disposition of land and building		5.9		5.9
Operating segments
Information on reportable segments
Net revenue	506.0	446.7	1,012.8	895.1
Gross profit	227.0	228.0	471.1	474.7
Operating segments | OpComms
Information on reportable segments
Net revenue	448.8	397.4	902.2	803.4
Gross profit	197.0	201.8	413.0	427.7
Operating segments | Lasers
Information on reportable segments
Net revenue	57.2	49.3	110.6	91.7
Gross profit	30.0	26.2	58.1	47.0
Unallocated corporate items:
Information on reportable segments
Stock-based compensation	(6.7)	(5.2)	(12.2)	(9.8)
Amortization of acquired intangibles	(24.8)	(15.9)	(47.7)	(31.7)
Amortization of acquired inventory fair value adjustments	(9.6)	0.0	(14.2)	0.0
Inventory and fixed asset write down due to product line exits	0.0	(0.1)	0.0	(0.1)
Integration related costs	(2.8)	0.0	(2.8)	0.0
Other (charges) gains, net	(16.9)	$ 0.7	(26.8)	$ 6.6
Supply chain constraints	$ 11.7		$ 19.0