Revenue from Contracts with Customers - Schedule of Disaggregated Revenue by Market (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 4,707,688	$ 5,160,100	$ 3,316,616
Industrial
Disaggregation of Revenue [Line Items]
Revenues	1,680,176	1,761,621	746,763
Communications
Disaggregation of Revenue [Line Items]
Revenues	2,273,761	2,293,380	2,154,830
Electronics
Disaggregation of Revenue [Line Items]
Revenues	355,905	625,639	310,374
Instrumentation
Disaggregation of Revenue [Line Items]
Revenues	397,846	479,460	104,649
Networking
Disaggregation of Revenue [Line Items]
Revenues	2,295,729	2,340,930	2,197,249
Networking | Industrial
Disaggregation of Revenue [Line Items]
Revenues	63,905	70,076	84,032
Networking | Communications
Disaggregation of Revenue [Line Items]
Revenues	2,192,286	2,219,677	2,064,424
Networking | Electronics
Disaggregation of Revenue [Line Items]
Revenues	6,655	11,488	12,218
Networking | Instrumentation
Disaggregation of Revenue [Line Items]
Revenues	32,883	39,689	36,575
Materials
Disaggregation of Revenue [Line Items]
Revenues	1,016,573	1,349,758	1,119,367
Materials | Industrial
Disaggregation of Revenue [Line Items]
Revenues	546,003	603,664	662,731
Materials | Communications
Disaggregation of Revenue [Line Items]
Revenues	81,475	73,703	90,406
Materials | Electronics
Disaggregation of Revenue [Line Items]
Revenues	349,250	614,151	298,156
Materials | Instrumentation
Disaggregation of Revenue [Line Items]
Revenues	39,845	58,240	68,074
Lasers
Disaggregation of Revenue [Line Items]
Revenues	1,395,386	1,469,412	0
Lasers | Industrial
Disaggregation of Revenue [Line Items]
Revenues	1,070,268	1,087,881	0
Lasers | Communications
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Lasers | Electronics
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
Lasers | Instrumentation
Disaggregation of Revenue [Line Items]
Revenues	$ 325,118	$ 381,531	$ 0