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Mining concessions, development costs, right-of-use assets, property, plant and equipment, net - Estimates prices for the current and long-term periods (Details) | Dec. 31, 2020 $ / t $ / oz
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Less than 1 year | Gold per ounce [Member] |
Mining concessions, development costs, property, plant and equipment, net |
Commodity price estimates | $ / oz | 1,800
Less than 1 year | Silver [Member] |
Mining concessions, development costs, property, plant and equipment, net |
Commodity price estimates | $ / oz | 23.00
Less than 1 year | Copper [Member] |
Mining concessions, development costs, property, plant and equipment, net |
Commodity price estimates | $ / t | 7,250
Less than 1 year | Lead [Member] |
Mining concessions, development costs, property, plant and equipment, net |
Commodity price estimates | $ / t | 1,850
Between 1 to 2 years | Gold per ounce [Member] |
Mining concessions, development costs, property, plant and equipment, net |
Commodity price estimates | $ / oz | 1,747
Between 1 to 2 years | Silver [Member] |
Mining concessions, development costs, property, plant and equipment, net |
Commodity price estimates | $ / oz | 21.20
Between 1 to 2 years | Copper [Member] |
Mining concessions, development costs, property, plant and equipment, net |
Commodity price estimates | $ / t | 7,083
Between 1 to 2 years | Lead [Member] |
Mining concessions, development costs, property, plant and equipment, net |
Commodity price estimates | $ / t | 2,056

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