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ACCOUNTING POLICIES AND RECENT ACCOUNTING PRONOUNCEMENTS - Accounts Receivable and Allowance for Doubtful Accounts (Details) | 12 Months Ended
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Jun. 30, 2020
Accounting Policies [Abstract] |
Percentage for allowance maintained on bad-debts | 100.00%

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- Definition Percentage for Allowance Maintained on Bad-Debts + References No definition available. + Details
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Namespace Prefix: | otex_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration