Condensed Consolidated Statements of Earnings (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Revenues	$ 1,348,135	$ 1,053,083
Costs, Expenses, and Other Expense (Income)
Cost of goods sold	888,003	746,188
Research and development	131,602	113,488
Selling, general and administrative	228,968	211,697
Restructuring charges	24,364	3,018
Interest expense	66,644	73,258
Other income, net	(10,749)	(6,269)
Total Costs, Expenses, & Other Expense	1,328,832	1,141,380
Earnings (Loss) Before Income Taxes	19,303	(88,297)
Income Tax Benefit	(5,558)	(20,763)
Net Earnings (Loss)	24,861	(67,534)
Net Loss Attributable to Noncontrolling Interests	(1,026)	0
Net Earnings (Loss) Attributable to Coherent Corp.	25,887	(67,534)
Less: Dividends on Preferred Stock	31,833	30,173
Net Loss Available to the Common Shareholders	$ (5,946)	$ (97,707)
Basic Loss Per Share (in usd per share)	$ (0.04)	$ (0.65)
Diluted Loss Per Share (in usd per share)	$ (0.04)	$ (0.65)