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Financial instruments - Schedule of net US dollar exposure (Details)
Sep. 30, 2022
CAD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2021
CAD ($)
Sep. 30, 2020
CAD ($)
Sep. 30, 2020
USD ($)
Dec. 31, 2019
CAD ($)
Disclosure of detailed information about financial instruments [line items]            
Assets $ 7,323,463   $ 8,717,846 $ 5,312,777   $ 700,087
Liabilities $ (8,326,354)   $ (2,594,118) $ (1,427,913)   $ (931,483)
U.S. subsidiary [Member]            
Disclosure of detailed information about financial instruments [line items]            
Net U.S. dollar exposure   $ 34,623        
U.S. dollar exposure [Member]            
Disclosure of detailed information about financial instruments [line items]            
Assets   70,187     $ 222,262  
Liabilities   (1,015,090)     (88,019)  
Net U.S. dollar exposure   (979,526)     134,243  
Impact to profit or loss if 5% movement in the US dollar   $ (48,976)     $ 6,712