Segment Reporting - Financial Information of Company's Operation by Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Jun. 30, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	$ 827,724	$ 783,232	$ 2,429,654	$ 2,297,885
Inter-segment revenues	0	0	0	0
Operating income	106,768	85,080	300,041	304,925
Interest expense	(43,499)	(13,034)	(72,752)	(45,833)
Other (expense) income, net	(241)	21,432	5,535	246
Income taxes	(14,027)	(12,387)	(41,701)	(44,081)
Net earnings	49,002	81,092	191,123	215,258
Depreciation and amortization	72,817	67,985	213,535	199,870
Expenditures for property, plant & equipment	94,302	26,002	195,991	105,331
Segment assets	7,767,196		7,767,196		$ 6,512,650
Goodwill	1,292,649		1,292,649		1,296,727
Unallocated & Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	0	0	0	0
Inter-segment revenues	(83,290)	(73,481)	(279,868)	(221,037)
Operating income	(9,604)	(15,728)	(29,511)	(15,728)
Interest expense	0	0	0	0
Other (expense) income, net	0	0	0	0
Income taxes	0	0	0	0
Net earnings	0	0	0	0
Depreciation and amortization	0	0	0	0
Expenditures for property, plant & equipment	0	0	0	0
Segment assets	0		0
Goodwill	0		0
Photonic Solutions
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Goodwill	1,052,171		1,052,171		1,053,028
Photonic Solutions | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	567,790	507,981	1,628,782	1,488,587
Inter-segment revenues	10,039	12,209	35,979	27,866
Operating income	54,604	48,286	160,863	147,159
Interest expense	0	0	0	0
Other (expense) income, net	0	0	0	0
Income taxes	0	0	0	0
Net earnings	0	0	0	0
Depreciation and amortization	44,402	41,060	129,388	119,510
Expenditures for property, plant & equipment	18,415	16,364	55,277	62,450
Segment assets	4,991,163		4,991,163
Goodwill	1,052,171		1,052,171
Compound Semiconductors
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Goodwill	240,478		240,478		$ 243,699
Compound Semiconductors | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	259,934	275,251	800,872	809,298
Inter-segment revenues	73,251	61,272	243,889	193,171
Operating income	61,768	52,522	168,688	173,494
Interest expense	0	0	0	0
Other (expense) income, net	0	0	0	0
Income taxes	0	0	0	0
Net earnings	0	0	0	0
Depreciation and amortization	28,415	26,925	84,147	80,360
Expenditures for property, plant & equipment	75,887	$ 9,639	140,714	$ 42,881
Segment assets	2,776,033		2,776,033
Goodwill	$ 240,478		$ 240,478