Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Net Earnings (Loss)	$ (15,730)	$ 2,546	$ (111,739)	$ (81,224)
Other Comprehensive Income (Loss):
Foreign currency translation adjustments	(146,770)	58,141	(27,885)	157,805
Pension adjustment, net of taxes	476	709	824	1,151
Comprehensive Income (Loss)	(155,046)	46,870	(156,213)	91,397
Comprehensive Loss Attributable to Noncontrolling Interests	(2,543)	0	(4,027)	0
Foreign Currency Translation Adjustments Attributable to Noncontrolling Interests	(294)	0	771	0
Comprehensive Income (Loss) Attributable to Coherent Corp.	(152,209)	46,870	(152,957)	91,397
Interest Rate Swap
Other Comprehensive Income (Loss):
Change in fair value of interest rate swap and interest rate cap, net of taxes	(4,359)	(6,251)	(17,034)	6,019
Interest Rate Cap
Other Comprehensive Income (Loss):
Change in fair value of interest rate swap and interest rate cap, net of taxes	$ 11,337	$ (8,275)	$ (379)	$ 7,646