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Financial instruments and financial risk factors - Assets Measured at Fair Value (Details) - Recurring fair value measurement - USD ($)
Jan. 31, 2022
Oct. 31, 2021
Disclosure of detailed information about financial instruments [line items]    
Financial assets $ 5,815,394 $ 4,072,701
Accounts receivable    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 5,815,394 4,072,701
Level 2    
Disclosure of detailed information about financial instruments [line items]    
Financial assets 5,815,394 4,072,701
Level 2 | Accounts receivable    
Disclosure of detailed information about financial instruments [line items]    
Financial assets $ 5,815,394 $ 4,072,701