Consolidated Statements of Shareholders' Equity and Mezzanine Equity - USD ($) $ in Thousands	Total	Coherent Inc.	Cumulative Effect, Period of Adoption, Adjustment	Interest Rate Swap	Interest Rate Cap	Preferred Shares	Common Stock	Common Stock Coherent Inc.	Common Stock Cumulative Effect, Period of Adoption, Adjustment	Preferred Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Interest Rate Swap	Accumulated Other Comprehensive Income (Loss) Interest Rate Cap	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, Preferred Stock (in shares)										0
Beginning balance, Common Stock (in shares) at Jun. 30, 2020							105,916,000
Beginning balance, Treasury Stock (in shares) at Jun. 30, 2020																(13,356,000)
Beginning Balance at Jun. 30, 2020	$ 2,076,803						$ 1,486,947			$ 0	$ (87,383)			$ 876,552		$ (199,313)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based and deferred compensation activities (in shares)							2,512,000									284,000
Share-based and deferred compensation activities	83,584						$ 102,737									$ (19,153)
Stock issued in underwritten public offering (in shares)							10,698,000			2,300,000
Shares issued in underwritten public offering	883,908						$ 438,589			$ 445,319
Net earnings (loss)	297,552													297,552
Foreign currency translation adjustments	86,991										86,991
Change in fair value of interest rate swap/cap, net of taxes				$ 12,312	$ 0							$ 12,312
Pension adjustment, net of taxes	2,347										2,347
Dividends and deemed dividends	(37,327)													(37,327)
Ending balance, Common Stock, (in shares) at Jun. 30, 2021							119,127,000
Ending balance, Preferred Stock (in shares) at Jun. 30, 2021										2,300,000
Ending balance, Treasury Stock (in shares) at Jun. 30, 2021																(13,640,000)
Ending Balance at Jun. 30, 2021	3,406,170		$ (11,472)				$ 2,028,273		$ (56,388)	$ 445,319	14,267			1,136,777	$ 44,916	$ (218,466)
Mezzanine Equity
Series B shares issued in March 2021 (in shares)						75,000
Series B shares issued in March 2021						$ 716,087
Dividends						$ 10,091
Ending balance (in shares) at Jun. 30, 2021						75,000
Ending balance at Jun. 30, 2021						$ 726,178
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, Preferred Stock (in shares)										2,300,000
Mezzanine Equity
Beginning balance (in shares)						75,000
Share-based and deferred compensation activities (in shares)							1,796,000									333,000
Share-based and deferred compensation activities	71,779						$ 92,667									$ (20,888)
Net earnings (loss)	234,759													234,759
Foreign currency translation adjustments	(89,967)										(89,967)
Change in fair value of interest rate swap/cap, net of taxes				43,508	14,306							43,508	$ 14,306
Pension adjustment, net of taxes	15,719										15,719
Dividends and deemed dividends	$ (68,327)													(68,327)
Ending balance, Common Stock, (in shares) at Jun. 30, 2022							120,923,000
Ending balance, Preferred Stock (in shares) at Jun. 30, 2022										2,300,000
Ending balance, Treasury Stock (in shares) at Jun. 30, 2022	(13,972,758)															(13,973,000)
Ending Balance at Jun. 30, 2022	$ 3,616,475						$ 2,064,552			$ 445,319	(2,167)			1,348,125		$ (239,354)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2020-06 [Member]
Mezzanine Equity
Dividends						$ 40,625
Ending balance (in shares) at Jun. 30, 2022						75,000
Ending balance at Jun. 30, 2022						$ 766,803
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, Preferred Stock (in shares)										2,300,000
Mezzanine Equity
Beginning balance (in shares)						75,000
Share-based and deferred compensation activities (in shares)							4,029,000									1,164,000
Share-based and deferred compensation activities	$ 117,361						$ 171,128									$ (53,767)
Coherent acquisition (in shares)								22,588,000
Coherent acquisition		$ 1,207,591						$ 1,207,591
Convertible debt conversions (in shares)							7,181,000
Convertible debt conversions	337,940						$ 337,940
Net earnings (loss)	(259,458)													(259,458)
Foreign currency translation adjustments	87,927										87,927
Change in fair value of interest rate swap/cap, net of taxes				$ 7,749	$ 22,322							$ 7,749	$ 22,322
Pension adjustment, net of taxes	(6,105)										(6,105)
Dividends and deemed dividends	$ (144,251)													(144,251)
Ending balance, Common Stock, (in shares) at Jun. 30, 2023							154,721,000
Ending balance, Preferred Stock (in shares) at Jun. 30, 2023										2,300,000
Ending balance, Treasury Stock (in shares) at Jun. 30, 2023	(15,135,711)															(15,137,000)
Ending Balance at Jun. 30, 2023	$ 4,987,551						$ 3,781,211			$ 445,319	$ 109,726			$ 944,416		$ (293,121)
Mezzanine Equity
Series B shares issued in March 2021 (in shares)						140,000
Series B shares issued in March 2021						$ 1,358,000
Dividends						$ 116,612
Ending balance (in shares) at Jun. 30, 2023						215,000
Ending balance at Jun. 30, 2023						$ 2,241,415
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance, Preferred Stock (in shares)										2,300,000
Mezzanine Equity
Beginning balance (in shares)						215,000