Revenue from Contracts with Customers - Schedule of Disaggregated Revenue by Market and Product (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 1,131,434	$ 1,370,285	$ 2,184,517	$ 2,714,855
Networking | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	524,235	608,680	997,084	1,205,228
Materials | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	253,678	382,396	498,318	738,040
Lasers | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	353,521	379,209	689,115	771,587
Industrial
Disaggregation of Revenue [Line Items]
Revenues	423,368	450,231	827,702	911,248
Industrial | Networking | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	14,746	15,926	30,711	34,619
Industrial | Materials | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	137,128	149,454	270,331	293,537
Industrial | Lasers | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	271,494	284,851	526,660	583,092
Communications
Disaggregation of Revenue [Line Items]
Revenues	520,334	600,055	979,860	1,185,453
Communications | Networking | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	499,350	579,393	945,624	1,142,914
Communications | Materials | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	20,984	20,662	34,236	42,539
Communications | Lasers | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Electronics
Disaggregation of Revenue [Line Items]
Revenues	88,732	199,955	178,521	380,399
Electronics | Networking | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	1,453	3,003	3,177	6,825
Electronics | Materials | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	87,279	196,952	175,344	373,574
Electronics | Lasers | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Instrumentation
Disaggregation of Revenue [Line Items]
Revenues	99,000	120,044	198,434	237,755
Instrumentation | Networking | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	8,686	10,358	17,572	20,870
Instrumentation | Materials | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	8,287	15,328	18,407	28,390
Instrumentation | Lasers | Operating Segments
Disaggregation of Revenue [Line Items]
Revenues	$ 82,027	$ 94,358	$ 162,455	$ 188,495