Special Charges (Recoveries) (Schedule Of Restructuring Reserve) (Details) $ in Thousands	3 Months Ended
Sep. 30, 2015 USD ($)
OpenText/Actuate Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Balance as of June 30, 2015	$ 5,968
Accruals and adjustments	15,474
Cash payments	(8,058)
Foreign exchange	127
Balance as of September 30, 2015	13,511
OpenText/Actuate Restructuring Plan [Member] \| Workforce Reduction [Member]
Restructuring Reserve [Roll Forward]
Balance as of June 30, 2015	3,842
Accruals and adjustments	15,084
Cash payments	(7,657)
Foreign exchange	(470)
Balance as of September 30, 2015	10,799
OpenText/Actuate Restructuring Plan [Member] \| Facility Costs [Member]
Restructuring Reserve [Roll Forward]
Balance as of June 30, 2015	2,126
Accruals and adjustments	390
Cash payments	(401)
Foreign exchange	597
Balance as of September 30, 2015	2,712
OpenText/GXS Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Balance as of June 30, 2015	7,282
Accruals and adjustments	(155)
Cash payments	(1,175)
Foreign exchange	105
Balance as of September 30, 2015	6,057
OpenText/GXS Restructuring Plan [Member] \| Workforce Reduction [Member]
Restructuring Reserve [Roll Forward]
Balance as of June 30, 2015	2,846
Accruals and adjustments	(156)
Cash payments	(328)
Foreign exchange	128
Balance as of September 30, 2015	2,490
OpenText/GXS Restructuring Plan [Member] \| Facility Costs [Member]
Restructuring Reserve [Roll Forward]
Balance as of June 30, 2015	4,436
Accruals and adjustments	1
Cash payments	(847)
Foreign exchange	(23)
Balance as of September 30, 2015	$ 3,567

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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Amount of (expense) reversal of expense related to a previously accrued restructuring cost liability. Excludes adjustments for costs incurred, costs settled, and foreign currency translation adjustments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 40

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6394291&loc=d3e17658-110867

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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- Definition

Amount of gain (loss) from translating a restructuring reserve to the currency of the reporting entity from an amount denominated or measured in a different currency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b)(2))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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-Publisher FASB

-Name Accounting Standards Codification

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-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

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