Revenue from Contracts with Customers - Schedule of Disaggregated Revenue by Market (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Revenues	$ 1,434,665	$ 1,131,434	$ 2,782,800	$ 2,184,517
Industrial
Disaggregation of Revenue [Line Items]
Revenues	437,445	423,368	844,385	827,702
Communications
Disaggregation of Revenue [Line Items]
Revenues	823,099	520,334	1,597,390	979,860
Electronics
Disaggregation of Revenue [Line Items]
Revenues	78,235	88,732	154,463	178,521
Instrumentation
Disaggregation of Revenue [Line Items]
Revenues	95,886	99,000	186,562	198,434
Networking
Disaggregation of Revenue [Line Items]
Revenues	815,913	524,235	1,578,785	997,084
Networking | Industrial
Disaggregation of Revenue [Line Items]
Revenues	13,851	14,746	28,231	30,711
Networking | Communications
Disaggregation of Revenue [Line Items]
Revenues	792,862	499,350	1,532,018	945,624
Networking | Electronics
Disaggregation of Revenue [Line Items]
Revenues	1,793	1,453	3,964	3,177
Networking | Instrumentation
Disaggregation of Revenue [Line Items]
Revenues	7,407	8,686	14,572	17,572
Materials
Disaggregation of Revenue [Line Items]
Revenues	243,475	253,678	480,902	498,318
Materials | Industrial
Disaggregation of Revenue [Line Items]
Revenues	126,381	137,128	246,027	270,331
Materials | Communications
Disaggregation of Revenue [Line Items]
Revenues	30,237	20,984	65,372	34,236
Materials | Electronics
Disaggregation of Revenue [Line Items]
Revenues	76,424	87,279	150,481	175,344
Materials | Instrumentation
Disaggregation of Revenue [Line Items]
Revenues	10,433	8,287	19,022	18,407
Lasers
Disaggregation of Revenue [Line Items]
Revenues	375,277	353,521	723,113	689,115
Lasers | Industrial
Disaggregation of Revenue [Line Items]
Revenues	297,213	271,494	570,127	526,660
Lasers | Communications
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	0
Lasers | Electronics
Disaggregation of Revenue [Line Items]
Revenues	18	0	18	0
Lasers | Instrumentation
Disaggregation of Revenue [Line Items]
Revenues	$ 78,046	$ 82,027	$ 152,968	$ 162,455