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