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COVER PAGE - shares
 6 Months Ended
Dec. 31, 2022
Jan. 27, 2023
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Dec. 31, 2022  
Document Transition Report false  
Entity File Number 0-27544  
Entity Registrant Name OPEN TEXT CORP  
Entity Incorporation, State or Country Code Z4  
Entity Tax Identification Number 98-0154400  
Entity Address, Address Line One 275 Frank Tompa Drive,  
Entity Address, City or Town Waterloo,  
Entity Address, State or Province ON  
Entity Address, Country CA  
Entity Address, Postal Zip Code N2L 0A1  
City Area Code 519  
Local Phone Number 888-7111  
Title of 12(b) Security Common stock without par value  
Trading Symbol OTEX  
Security Exchange Name NASDAQ  
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  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   270,463,119
Entity Central Index Key 0001002638  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Current Fiscal Year End Date --06-30