Document and Entity Information	9 Months Ended
	May 31, 2021 shares
Cover [Abstract]
Entity Registrant Name	Enertopia Corp.
Entity Central Index Key	0001346022
Document Period End Date	May 31, 2021
Document Type	10-Q
Amendment Flag	false
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2021
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding	136,431,700
Entity Filer Category	Non-accelerated Filer
Current Fiscal Year End Date	--08-31
Entity Small Business	true
Entity Interactive Data Current	Yes
Entity Emerging Growth Company	false
Entity Shell Company	false