Segment Reporting - Schedule of Financial Information by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	$ 1,497,879	$ 1,208,809	$ 4,280,679	$ 3,393,326
Share-based compensation	(40,166)	(26,413)	(116,656)	(98,189)
Restructuring costs			(43,002)	(4,858)
Interest expense	(57,284)	(72,753)	(188,206)	(220,689)
Other (income) expense, net	4,577	(18,597)	(61,988)	(30,252)
Earnings (loss) before income taxes	9,890	(31,851)	157,597	(157,555)
Expenditures for property, plant, and equipment	111,819	93,242	309,486	246,909
Networking
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	897,317	618,824	2,476,102	1,615,908
Materials
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	236,672	238,982	717,574	737,300
Lasers
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	363,890	351,003	1,087,003	1,040,118
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	1,497,879	1,208,809	4,280,679	3,393,326
Segment profit	352,227	210,074	957,886	580,700
Operating Segments | Networking
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	897,317	618,824	2,476,102	1,615,908
Segment profit	175,352	97,737	464,527	253,800
Expenditures for property, plant, and equipment	69,267	20,884	188,164	74,751
Operating Segments | Materials
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	236,672	238,982	717,574	737,300
Segment profit	83,814	70,656	249,039	176,978
Expenditures for property, plant, and equipment	33,909	61,119	98,408	156,142
Operating Segments | Lasers
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	363,890	351,003	1,087,003	1,040,118
Segment profit	93,061	41,681	244,320	149,922
Expenditures for property, plant, and equipment	8,643	11,239	22,914	16,016
Unallocated
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	149,746	144,582	431,929	353,076
Intersegment
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	0	0	0	0
Intersegment | Networking
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	(14,678)	(10,892)	(41,689)	(33,758)
Intersegment | Materials
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	(133,178)	(132,177)	(384,468)	(315,961)
Intersegment | Lasers
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	(1,890)	(1,513)	(5,772)	(3,357)
Corporate expenses
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Corporate and centralized function costs	(72,974)	(58,132)	(196,035)	(165,336)
Share-based compensation	(40,166)	(26,413)	(116,656)	(98,189)
Restructuring costs	(73,769)	(11,530)	(106,154)	(12,978)
Integration, site consolidation and other costs	(6,404)	(19,442)	(24,485)	(54,894)
Amortization of intangibles	(87,163)	(72,252)	(230,741)	(216,421)
Interest expense	(57,284)	(72,753)	(188,206)	(220,689)
Other (income) expense, net	(4,577)	18,597	61,988	30,252
Earnings (loss) before income taxes	9,890	(31,851)	157,597	(157,555)
Consulting and legal costs related to projects to integrate recent acquisitions	5,000	11,000	21,000	34,000
Manufacturing inefficiencies, employee severance and retention costs and duplicative labor	$ 1,000	$ 8,000	$ 3,000	$ 21,000