BASIS OF PRESENTATION (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Noncontrolling Interest [Line Items]
Decrease in retained earnings	$ (2,153,326)	$ (2,159,396)
Allowance for credit loss, current	(438,547)	(466,357)
Decrease in contract assets	(25,344)	(29,570)
Increase to deferred tax assets	$ 796,738	911,565
Adjustment
Noncontrolling Interest [Line Items]
Decrease in retained earnings		2,500
Allowance for credit loss, current		3,000
Decrease in contract assets		300
Increase to deferred tax assets		$ 800
OT South Africa
Noncontrolling Interest [Line Items]
Ownership percentage by Open Text	70.00%
GXS Singapore
Noncontrolling Interest [Line Items]
Ownership percentage by Open Text	81.00%

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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