Segment and Geographic Reporting - Financial Information of Company's Operation by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Net revenues	$ 3,316,616	$ 3,105,891	$ 2,380,071
Inter-segment revenues	0	0	0
Operating income (loss)	414,294	402,119	39,479
Interest expense	(121,254)	(59,899)	(89,409)
Other income, net	(11,233)	10,370	(13,998)
Income taxes	(47,048)	(55,038)	(3,101)
Net Earnings (Loss)	234,759	297,552	(67,029)
Depreciation and amortization	286,779	270,069	220,882
Expenditures for property, plant & equipment	314,332	146,337	136,877
Segment assets	7,844,846	6,512,650	5,234,714
Goodwill	1,285,759	1,296,727	1,239,009
Photonic Solutions
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Goodwill	1,048,743	1,053,028	1,052,494
Compound Semiconductors
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Goodwill	237,016	243,699	186,515
Operating Segments | Photonic Solutions
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Net revenues	2,226,196	2,038,284	1,536,790
Inter-segment revenues	36,898	35,358	31,515
Operating income (loss)	230,094	207,652	49,930
Interest expense	0	0	0
Other income, net	0	0	0
Income taxes	0	0	0
Net Earnings (Loss)	0	0	0
Depreciation and amortization	172,851	161,208	112,203
Expenditures for property, plant & equipment	89,818	87,304	45,795
Segment assets	4,875,053	4,231,289	3,502,467
Goodwill	1,048,743	1,053,028	1,052,494
Operating Segments | Compound Semiconductors
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Net revenues	1,090,420	1,067,607	821,230
Inter-segment revenues	329,342	244,407	164,884
Operating income (loss)	220,070	221,239	62,279
Interest expense	0	0	0
Other income, net	0	0	0
Income taxes	0	0	0
Net Earnings (Loss)	0	0	0
Depreciation and amortization	113,928	108,861	104,936
Expenditures for property, plant & equipment	224,514	59,033	88,318
Segment assets	2,969,793	2,281,361	1,732,247
Goodwill	237,016	243,699	186,515
Unallocated & Other
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Net revenues	0	0	22,051
Inter-segment revenues	(366,240)	(279,765)	(196,399)
Operating income (loss)	(35,870)	(26,772)	(72,730)
Interest expense	0	0	0
Other income, net	0	0	0
Income taxes	0	0	0
Net Earnings (Loss)	0	0	0
Depreciation and amortization	0	0	3,743
Expenditures for property, plant & equipment	0	0	2,764
Segment assets	0	0	0
Goodwill	$ 0	$ 0	$ 0