Special Charges (Recoveries) - Schedule of Restructuring Reserve (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2017	Jun. 30, 2016
Fiscal 2017 Restructuring Plan
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2016	$ 0
Accruals and adjustments	33,827
Cash payments	(16,612)
Foreign exchange and other non-cash adjustments	(5,801)
Balance payable as at June 30, 2017	11,414	$ 0
Fiscal 2017 Restructuring Plan \| Workforce Reduction
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2016	0
Accruals and adjustments	31,595
Cash payments	(16,156)
Foreign exchange and other non-cash adjustments	(5,394)
Balance payable as at June 30, 2017	10,045	0
Fiscal 2017 Restructuring Plan \| Facility Costs
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2016	0
Accruals and adjustments	2,232
Cash payments	(456)
Foreign exchange and other non-cash adjustments	(407)
Balance payable as at June 30, 2017	1,369	0
Fiscal 2015 Restructuring Plan
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2016	8,191	5,968
Accruals and adjustments	(1,518)	22,179
Cash payments	(3,052)	(19,651)
Foreign exchange and other non-cash adjustments	(123)	(305)
Balance payable as at June 30, 2017	3,498	8,191
Fiscal 2015 Restructuring Plan \| Workforce Reduction
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2016	3,145	3,842
Accruals and adjustments	(1,161)	17,249
Cash payments	(1,694)	(17,290)
Foreign exchange and other non-cash adjustments	(83)	(656)
Balance payable as at June 30, 2017	207	3,145
Fiscal 2015 Restructuring Plan \| Facility Costs
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2016	5,046	2,126
Accruals and adjustments	(357)	4,930
Cash payments	(1,358)	(2,361)
Foreign exchange and other non-cash adjustments	(40)	351
Balance payable as at June 30, 2017	3,291	5,046
OpenText/GXS Restructuring Plan
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2016	721	7,282
Accruals and adjustments	1,191	(3,427)
Cash payments	(530)	(2,363)
Foreign exchange and other non-cash adjustments	(29)	(771)
Balance payable as at June 30, 2017	1,353	721
OpenText/GXS Restructuring Plan \| Workforce Reduction
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2016	115	2,846
Accruals and adjustments	74	(1,878)
Cash payments	0	(648)
Foreign exchange and other non-cash adjustments	(92)	(205)
Balance payable as at June 30, 2017	97	115
OpenText/GXS Restructuring Plan \| Facility Costs
Restructuring Reserve [Roll Forward]
Balance payable as at June 30, 2016	606	4,436
Accruals and adjustments	1,117	(1,549)
Cash payments	(530)	(1,715)
Foreign exchange and other non-cash adjustments	63	(566)
Balance payable as at June 30, 2017	$ 1,256	$ 606

Restructuring Reserve, Foreign Currency Translation Gain (Loss) and Settled without Cash

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585

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- Definition

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

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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- Definition

Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: 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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- Definition

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

+ References

No definition available.

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