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Right-of-use assets - Schedule of consolidated statements of changes in shareholders' equity (deficit) (Details) - CAD ($)
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure of quantitative information about right-of-use assets [line items]          
Deficit $ (25,909,239) $ (15,388,949) $ (6,073,577) $ (2,536,799)  
Total shareholders' equity (deficit) $ (1,002,891) $ 6,123,728 3,884,864 (231,396) $ (1,389,319)
As previously reported [Member]          
Disclosure of quantitative information about right-of-use assets [line items]          
Deficit     (6,102,058) (2,686,799)  
Total shareholders' equity (deficit)     3,856,383 (381,396)  
Adjustment [Member]          
Disclosure of quantitative information about right-of-use assets [line items]          
Deficit     28,481 150,000  
Total shareholders' equity (deficit)     $ 28,481 $ 150,000