v3.26.3
Debt - Narrative (Details)
$ / shares in Units, Tsh in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 29, 2026
USD ($)
$ / shares
shares
Nov. 12, 2025
$ / shares
shares
Aug. 29, 2025
USD ($)
Aug. 08, 2025
USD ($)
$ / shares
shares
Mar. 27, 2024
USD ($)
d
derivative
$ / shares
Jun. 30, 2026
USD ($)
$ / shares
Sep. 30, 2025
USD ($)
$ / shares
Jun. 30, 2025
USD ($)
$ / shares
Sep. 30, 2026
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
$ / shares
Apr. 29, 2026
USD ($)
Mar. 16, 2026
USD ($)
Aug. 08, 2025
TZS (Tsh)
shares
Dec. 31, 2024
USD ($)
Disclosure of detailed information about financial instruments [line items]                              
Unsecured convertible debentures         $ 50,000,000.0                    
Unsecured convertible debentures bear interest term         48 months                    
Borrowings, interest, payment in kind accrual period         2 years                    
Unsecured convertible debentures price (in dollars per share) | $ / shares         $ 8.00                    
Interest paid                 $ 4,278,974            
Weighted average rate         30.00%                    
Exercise price of issued shares (in dollars per share) | $ / shares         $ 8.00                    
Conversion price rate         50.00%                    
Number of trading days | d         15                    
Number of consecutive trading days | d         30                    
Number of embedded derivatives | derivative         2                    
Financial assets at fair value through profit or loss             $ 32,730,915   36,268,625 $ 32,730,915 $ 34,521,935       $ 26,235,808
Debt instruments held at amortised cost                 40,924,117   43,628,118        
Embedded derivatives           $ 3,604,000 $ 9,518,000 $ 6,623,000 $ 3,282,000 9,518,000 $ 5,153,000       20,768,000
Share price (in dollars per share) | $ / shares           $ 3.88 $ 5.48 $ 4.12 $ 3.76   $ 4.27        
Conversion price (in dollars per share) | $ / shares                 $ 8.00            
Increase in share price volatility result in increase in fair value                 $ 515,000            
Decrease in share price volatility result in decrease in fair value                 856,000            
Exercise price, warrants (in dollars per share) | $ / shares   $ 4.00                          
Debt instrument     $ 20,000,000                        
Drawings from senior secured bridge loan facility     19,700,000           21,700,000 19,742,077          
Deferred financing costs                 2,387,264   $ 5,218,063        
Deferred financing costs set off against debt                 $ 8,170,000   $ 3,440,000        
Exercise prices (in dollars per share) | $ / shares   $ 4.00   $ 5.42                      
Warrants issued (in shares) | shares                 21,802,814            
Number of ordinary shares exchangeable (in shares) | shares   1                          
Expected lives                 3 years 7 months 6 days            
Price of warrants (in dollars per share) | $ / shares   $ 2.50                          
Warrants issued in connection with the 2025 Offering                              
Disclosure of detailed information about financial instruments [line items]                              
Exercise prices (in dollars per share) | $ / shares                 $ 4.00            
Warrants issued (in shares) | shares                 4,411,764            
Warrant units                              
Disclosure of detailed information about financial instruments [line items]                              
Increase in share price volatility result in increase in fair value                 $ 860,000            
Decrease in share price volatility result in decrease in fair value                 $ 890,000            
Expected lives   4 years             3 years 1 month 13 days   3 years 10 months 13 days        
Expected volatility                 75.00%   70.00%        
Risk-free interest rate                 4.76%   3.59%        
Weighted average price (in dollars per share) | $ / shares                 $ 3.76            
Senior Secured Bridge Loan Facility Warrants                              
Disclosure of detailed information about financial instruments [line items]                              
Financial covenants ratio       1.1:1                      
Financial liabilities, at fair value                 $ 37,815,931   $ 19,063,612        
Undrawn borrowing facilities             $ 16,515,692   $ 36,083,812 $ 16,515,692 16,677,872       $ 0
Senior Secured Bridge Loan Facility Warrants | Warrant units                              
Disclosure of detailed information about financial instruments [line items]                              
Number of warrants to be issued | shares 500,000               500,000            
Financial liabilities, at fair value $ 1,080,000.00                            
Utilisation period                 90 days            
Exercise prices (in dollars per share) | $ / shares $ 6.25                            
Senior Secured Bridge Loan Facility Warrants | Kabanga Nickel Limited                              
Disclosure of detailed information about financial instruments [line items]                              
Interest rate       9.25%                   9.25%  
Borrowing capacity     60,000,000 $ 60,000,000         $ 18,300,000            
Option to extend term       6 months                      
Arrangement fee percentage       2.25%                   2.25%  
Commitment fee percentage       2.50%                   2.50%  
Carrying amount of assets affected by currency not being exchangeable       $ 5,000,000                      
Carrying amount of freely tradeable currency       $ 4,000,000                   Tsh 1  
Number of warrants to be issued | shares       2,500,000                   2,500,000  
Exercise price, warrants (in dollars per share) | $ / shares       $ 5.42                      
Expiration period for issuance of warrants       5 years                      
Fair value of warrants (in dollars per share) | $ / shares       $ 2.26                      
Financial liabilities, at fair value       $ 5,650,000                      
Partial drawdown of second tranche                       $ 16,700,000 $ 5,000,000    
Transactions costs pertaining to third tranche     $ 18,300,000                        
Deferred financing costs                 10,560,000   $ 8,660,000        
Amount received from first tranche for finance fund                 $ 41,700,000            
Other material actuarial assumptions                              
Disclosure of detailed information about financial instruments [line items]                              
Percentage of reasonably possible increase in actuarial assumption                 10.00%            
Percentage of reasonably possible decrease in actuarial assumption                 10.00%            
Share Price                              
Disclosure of detailed information about financial instruments [line items]                              
Key Inputs $3.96 (closing share price on June 26, 2026)     $4.32 based on Lifezone's 30 day VWAP closing share price on the NYSE         3.76   4.27        
Secured Overnight Financing Rate                              
Disclosure of detailed information about financial instruments [line items]                              
Interest rate         4.00%                    
Secured overnight financing floor rate         3.00%                    
Secured Overnight Financing Rate | Lifezone                              
Disclosure of detailed information about financial instruments [line items]                              
Interest rate         105.00%                    
Unsecured Convertible Debentures                              
Disclosure of detailed information about financial instruments [line items]                              
Unsecured convertible debentures price (in dollars per share) | $ / shares         $ 4.0