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Significant accounting policies - Useful Lives of Property, Plant and Equipment (Details)
 12 Months Ended
Dec. 31, 2022
Minimum | Mining assets  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 3 years
Minimum | Energy generating assets  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 5 years
Minimum | Buildings  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 3 years
Minimum | Supplies and accessories  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 4 years
Minimum | Office equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 5 years
Minimum | Transport equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 8 years
Minimum | Network and communication equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 4 years
Minimum | IT equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 5 years
Minimum | Machinery, plant and equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 3 years
Minimum | Other fixed assets  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 3 years
Maximum | Mining assets  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 10 years
Maximum | Energy generating assets  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 16 years
Maximum | Buildings  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 25 years
Maximum | Supplies and accessories  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 10 years
Maximum | Office equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 10 years
Maximum | Transport equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 9 years
Maximum | Network and communication equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 12 years
Maximum | IT equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 10 years
Maximum | Machinery, plant and equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 25 years
Maximum | Other fixed assets  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 15 years
Average | Mining assets  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 8 years
Average | Energy generating assets  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 10 years
Average | Buildings  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 13 years
Average | Supplies and accessories  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 8 years
Average | Office equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 9 years
Average | Transport equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 9 years
Average | Network and communication equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 8 years
Average | IT equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 8 years
Average | Machinery, plant and equipment  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 10 years
Average | Other fixed assets  
Significant accounting policies [Line Items]  
Useful life measured as period of time, property, plant and equipment 9 years