Segment and Geographic Reporting - Schedule of Segment Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting, Asset Reconciling Item [Line Items]
Segment assets	$ 14,910,936	$ 14,488,634	$ 13,711,133
Operating Segments \| Networking
Segment Reporting, Asset Reconciling Item [Line Items]
Segment assets	4,027,777	3,472,866	3,188,873
Operating Segments \| Materials
Segment Reporting, Asset Reconciling Item [Line Items]
Segment assets	2,779,093	3,017,858	2,043,241
Operating Segments \| Lasers
Segment Reporting, Asset Reconciling Item [Line Items]
Segment assets	7,541,129	7,361,731	7,751,937
Corporate and shared services
Segment Reporting, Asset Reconciling Item [Line Items]
Segment assets	$ 562,937	$ 636,179	$ 727,082

Amount of asset recognized for present right to economic benefit.

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+ Details