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Basis of preparation (Details)
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Canadian Dollar          
Schedule of Foreign Currency [Line Items]          
Foreign current exchange rate at period end 1.39   1.39   1.44
Average foreign currency exchange rate 1.38 1.36 1.40 1.36  
Euro          
Schedule of Foreign Currency [Line Items]          
Foreign current exchange rate at period end 0.85   0.85   0.96
Average foreign currency exchange rate 0.86 0.91 0.89 0.92  
RMB          
Schedule of Foreign Currency [Line Items]          
Foreign current exchange rate at period end 7.12   7.12   7.30
Average foreign currency exchange rate 7.16 7.16 7.22 7.20