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Loss per share (Tables) - Li Cycle Holdings Corp [Member]
 12 Months Ended
Oct. 31, 2021
Statement [Line Items]  
Summary of Weighted Average Number of Ordinary Shares
     Year Ended October 31,  
    
2021
      2020      2019  
Net loss
   
$
(226,559,288
) 
    $ (9,275,962 )     $ (4,100,782 ) 
Weighted average number of ordinary shares
   
 
110,119,135
 
      82,571,828        71,891,372  
    
 
 
     
 
 
     
 
 
  
Basic and diluted loss per share
   
$
(2.06
) 
    $ (0.11 )     $ (0.06 ) 
    
 
 
     
 
 
     
 
 
  
Summary of Anti Dilutive Potential Ordinary Shares Excluded from Weighted Average Number of Ordinary Shares The following potential common shares are anti-dilutive and are therefore excluded from the weighted average number of common shares for the purpose of diluted earnings per share:
 
     Year Ended October 31,  
    
2021
      2020      2019  
Stock options
   
 
5,296,553
 
      5,327,985        3,991,000  
Warrants
   
 
22,999,894
 
      —          —    
Convertible debt
   
 
7,493,795
 
      —
  
        536,231  
Restricted share units
   
 
716,763
 
      87,084        —    
    
 
 
     
 
 
     
 
 
  
    
 
36,507,005
 
      5,415,069        4,527,231