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Significant Accounting Policies Allowance for Doubtful Accounts (Details)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Accounting Policies [Abstract]
Percentage for Allowance Maintained on Bad-Debts	100.00%
Customer Accounted for More than Ten Percentage Accounts receivables	0	0

X

- Definition

Customer Accounted for More than Ten Percentage Accounts receivables

+ References

No definition available.

+ Details

Name:	otex_CustomerAccountedforMorethanTenPercentageAccountsreceivables
Namespace Prefix:	otex_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage for Allowance Maintained on Bad-Debts

+ References

No definition available.

+ Details

Name:	otex_PercentageforAllowanceMaintainedonBadDebts
Namespace Prefix:	otex_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_AccountingPoliciesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration