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Accounts Payable And Accrued Liabilities (Narrative) (Details) (USD $) In Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2011	Jun. 30, 2011
Accounts Payable And Accrued Liabilities [Abstract]
Acquisition accruals	$ 2.6	$ 3.3
Present value of asset retirement obligation	5.0	6.1
Undiscounted value of asset retirement obligation	$ 5.5	$ 6.5

X

- Definition

The present value of a liability for an asset retirement obligation associated with the disposal or retirement of a tangible long-lived asset that results from acquisition, construction or development, or the normal operations of a long-lived asset including obligations from operating leases.

+ Details

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Period Type:	duration

X

- Definition

Asset Retirement Obligation Undiscounted Value

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- Definition

Remaining balance of acquisition accruals

+ Details

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Namespace Prefix:	otex
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

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