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Equity - Narrative (Details)
 1 Months Ended 12 Months Ended
Nov. 30, 2021
USD ($)
shares
tranche
$ / shares
Dec. 31, 2023
USD ($)
shares
plan
Dec. 31, 2022
USD ($)
shares
$ / shares
Dec. 31, 2021
shares
Mar. 31, 2021
USD ($)
Disclosure of classes of share capital [line items]          
Number of shares issued (in shares)   224,902 112,451    
Total purchase consideration | $   $ 3,068,000 $ 1,782,000    
Deferred finance cost | $   $ 15,000 $ 20,000    
Shares issued (in shares)   298,935,706 298,394,203    
Equity (in shares)   298,935,706 298,394,203    
Compensation expense | $   $ 10,720,000 $ 8,939,000    
Options exercised (in shares)   152,120 304,635    
Proceeds from exercise of options | $   $ 335,000 $ 916,000    
Options granted (in shares)   0 1,263,685    
Weighted average exercise price of options granted (in usd per share) | (per share)   $ 0 $ 8.97    
Options outstanding (in shares)   4,390,222 4,807,620 4,041,567  
Shares to be issued (in shares)   17,140,498 18,844,127    
Share-based compensation | $   $ 10,959,000 $ 9,408,000    
Ballard Motive Solutions          
Disclosure of classes of share capital [line items]          
Number of shares issued (in shares) 337,353        
Number of tranches | tranche 3        
Price per share (usd per share) | $ / shares $ 18.30        
Net proceeds | $ $ 4,851,000        
Prospectus          
Disclosure of classes of share capital [line items]          
Sale of stock authorized amount | $         $ 1,500,000,000
Renewal term   2 years      
Share Distribution Plan          
Disclosure of classes of share capital [line items]          
Shares issued (in shares)   0 0    
Compensation expense | $   $ 0 $ 0    
Common shares          
Disclosure of classes of share capital [line items]          
Options exercised (in shares)   152,120 304,635    
Proceeds from exercise of options | $   $ 335,000 $ 916,000    
Stock Option          
Disclosure of classes of share capital [line items]          
Award term (years)   7 years      
Compensation expense | $   $ 3,035,000 5,931,000    
Award vesting period (years)   3 years      
Stock Option | Tranche One          
Disclosure of classes of share capital [line items]          
Award vesting percentage   33.33%      
Stock Option | Tranche Two          
Disclosure of classes of share capital [line items]          
Award vesting percentage   33.33%      
Stock Option | Tranche Three          
Disclosure of classes of share capital [line items]          
Award vesting percentage   33.33%      
DSUs          
Disclosure of classes of share capital [line items]          
Compensation expense | $   $ 397,000 $ 529,000    
Number of common shares each unit is redeemable for (in shares)   1      
Number of shares granted (in shares)   93,188 80,319    
Exercised (in shares)   65,499 126,862    
Common shares issued (in shares)   31,736 58,990    
Share-based compensation | $   $ 171,000 $ 753,000    
Outstanding (in shares)   737,369 709,680 756,223  
Granted (in shares)   93,188 80,319    
RSUs          
Disclosure of classes of share capital [line items]          
Compensation expense | $   $ 7,288,000 $ 2,479,000    
Options exercised (in shares)   132,745 217,832    
Award vesting period (years)   3 years      
Number of common shares each unit is redeemable for (in shares)   1      
Exercised (in shares)   279,668 460,681    
Share-based compensation | $   $ 585,000 $ 2,466,000    
Outstanding (in shares)   3,141,446 1,002,080 966,220  
Number of plans | plan   2      
Granted (in shares)   2,996,387 567,693