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Summary of material accounting policies (Details)
 12 Months Ended
Dec. 31, 2024
USD ($)
Disclosure of detailed information about intangible assets [line items]  
Operating lease, capitalization threshold $ 30,000
Expiration Date 2042  
Disclosure of detailed information about intangible assets [line items]  
Power agreement terms 25 years
Expiration date 2025  
Disclosure of detailed information about intangible assets [line items]  
Power agreement terms 15 years
Bottom of range | Trademarks  
Disclosure of detailed information about intangible assets [line items]  
Useful life measured as period of time, intangible assets other than goodwill 10 years
Bottom of range | Software  
Disclosure of detailed information about intangible assets [line items]  
Useful life measured as period of time, intangible assets other than goodwill 3 years
Top of range | Trademarks  
Disclosure of detailed information about intangible assets [line items]  
Useful life measured as period of time, intangible assets other than goodwill 20 years
Top of range | Software  
Disclosure of detailed information about intangible assets [line items]  
Useful life measured as period of time, intangible assets other than goodwill 5 years