Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2022	May 11, 2022
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2022
Entity Registrant Name	INTELGENX TECHNOLOGIES CORP.
Entity Central Index Key	0001098880
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding		154,951,290
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Entity Shell Company	false
Entity Small Business	true
Entity Interactive Data Current	Yes
Entity Emerging Growth Company	false
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	6420 Abrams
Entity Address, City or Town	Ville Saint Laurent
Entity Address, State or Province	QC
Entity Address, Postal Zip Code	H4S 1Y2
Entity Address, Country	CA
City Area Code	514
Local Phone Number	331-7440
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	000-31187
Entity Tax Identification Number	87-0638336