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Financial instruments and financial risk factors - Additional Information (Detail) - Li Cycle Holdings Corp [Member]
$ in Millions
12 Months Ended
Oct. 31, 2021
USD ($)
Disclosure of fair value measurement of liabilities [line items]  
Description about transfers between levels There were no transfers between the levels during the current or prior year.
Currency risk [member]  
Disclosure of fair value measurement of liabilities [line items]  
Percentage Of strengthening of candian dollar aganst american dollar 5.00%
Percentage Of weakling of canadian dollar against american dollar 5.00%
Increase decrease through foreign exchange, financial assets $ 0.9
Currency risk [member] | Canadian Dollar Denominated Cash [Member]  
Disclosure of fair value measurement of liabilities [line items]  
Value at risk 1.3
Currency risk [member] | Canadian Dollar Net Liabilities And Loan Payable [Member]  
Disclosure of fair value measurement of liabilities [line items]  
Value at risk $ 23.9