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Cover - USD ($)
 12 Months Ended
Jun. 30, 2023
Aug. 15, 2023
Dec. 31, 2022
Entity Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Jun. 30, 2023    
Current Fiscal Year End Date --06-30    
Document Transition Report false    
Entity File Number 001-39375    
Entity Registrant Name COHERENT CORP.    
Entity Incorporation, State or Country Code PA    
Entity Tax Identification Number 25-1214948    
Entity Address, Address Line One 375 Saxonburg Blvd.    
Entity Address, City or Town Saxonburg    
Entity Address, State or Province PA    
Entity Address, Postal Zip Code 16056    
City Area Code 724    
Local Phone Number 352-4455    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 4,841,177,890
Entity Common Stock, Shares Outstanding   150,397,328  
Amendment Flag false    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000820318    
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the registrant’s definitive proxy statement, which will be issued in connection with the 2023 Annual Meeting of Shareholders of Coherent Corp., are incorporated by reference into Part III of this Annual Report on Form 10-K.
    
Common Stock, no par      
Entity Information [Line Items]      
Title of 12(b) Security Common Stock, no par value    
Trading Symbol COHR    
Security Exchange Name NYSE    
Series A Mandatory Convertible Preferred Stock, no par value      
Entity Information [Line Items]      
Title of 12(b) Security Series A Mandatory Convertible Preferred Stock, no par value    
No Trading Symbol Flag true