Document And Entity Information	3 Months Ended
	Sep. 30, 2014	Oct. 21, 2014
Document And Entity Information [Abstract]
Entity Registrant Name	OPEN TEXT CORP
Entity Central Index Key	0001002638
Current Fiscal Year End Date	--06-30
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2014
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	otex
Amendment Flag	false
Entity Common Stock, Shares Outstanding		122,037,521
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes