v3.26.1
PREPAID EXPENSES AND OTHER ASSETS - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Schedule of Equity Method Investments [Line Items]      
OpenText share in net income of equity investees $ (4,049) $ 230 $ (18,194)
Minimum | Limited Partner Investments      
Schedule of Equity Method Investments [Line Items]      
Ownership by noncontrolling owners (as a percent) 4.00%    
Maximum | Limited Partner Investments      
Schedule of Equity Method Investments [Line Items]      
Ownership by noncontrolling owners (as a percent) 20.00%