EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Basic earnings per share
Net income attributable to OpenText	$ 92,805	$ 98,285	$ 407,035	$ 216,861
Basic earnings per share attributable to OpenText (in dollars per share)	$ 0.35	$ 0.36	$ 1.54	$ 0.80
Diluted earnings per share
Net income attributable to OpenText	$ 92,805	$ 98,285	$ 407,035	$ 216,861
Diluted earnings per share attributable to OpenText (in dollars per share)	$ 0.35	$ 0.36	$ 1.53	$ 0.80
Weighted-average number of shares outstanding (in ‘000’s)
Basic (in shares)	262,841	272,272	265,132	271,671
Effect of dilutive securities (in shares)	993	761	478	678
Diluted (in shares)	263,834	273,033	265,610	272,349
Excluded as anti-dilutive (in shares)	12,864	7,414	12,424	7,631

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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