Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Name:	us-gaap_IncomeLossFromEquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

PREPAID EXPENSES AND OTHER ASSETS - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Schedule of Equity Method Investments [Line Items]
OpenText share in net income of equity investees	$ (18,194)	$ (23,077)	$ 58,702
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%