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v3.23.1

Significant accounting policies (Tables) | 12 Months Ended
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Dec. 31, 2022
Significant accounting policies |
Schedule of foreign exchange rates used to translate monetary items | The main exchange rates and UF used to translate monetary assets and liabilities, expressed in foreign currency at the end and average of each period in respect to U.S. dollars, are as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ | ​ |  | ​ | ​ | ​
​ | ​ | Closing exchange rates | ​ | Average exchange rates
​ | ​ | As of | ​ | As of | ​ | As of | ​ | As of
​ | ​ | December 31, | ​ | December 31, | ​ | December 31, | ​ | December 31,
Currencies |  | 2022 |  | 2021 |  | 2022 |  | 2021
​ |  | ThUS$ |  | ThUS$ |  | ThUS$ |  | ThUS$
Brazilian real |  | 5.28 |  | 5.57 |  | 5.25 |  | 5.66
New Peruvian sol |  | 3.81 |  | 3.99 |  | 3.83 |  | 4.04
Japanese yen |  | 131.32 |  | 115.18 |  | 134.70 |  | 113.87
Euro |  | 0.93 |  | 0.88 |  | 0.94 |  | 0.88
Mexican peso |  | 19.50 |  | 20.54 |  | 19.60 |  | 20.90
Australian dollar |  | 1.47 |  | 1.38 |  | 1.48 |  | 1.40
Pound Sterling |  | 0.83 |  | 0.74 |  | 0.82 |  | 0.75
South African rand |  | 17.01 |  | 15.94 |  | 17.28 |  | 15.88
Chilean peso |  | 855.86 |  | 844.69 |  | 873.81 |  | 849.46
Chinese yuan |  | 6.92 |  | 6.38 |  | 6.98 |  | 6.37
Indian rupee |  | 82.73 |  | 74.42 |  | 82.52 |  | 75.40
Thai Baht |  | 34.64 |  | 33.32 |  | 34.76 |  | 33.55
Turkish lira |  | 18.71 |  | 13.28 |  | 18.66 |  | 13.54
Korean Won | ​ | 1,259.98 | ​ | 1,188.79 | ​ | 1,291.64 | ​ | 1,183.95
Indonesian Rupiah | ​ | 15,570.00 | ​ | 14,265.00 | ​ | 15,596.90 | ​ | 14,320.57
United Arab Emirates dirham | ​ | 3.67 | ​ | 3.67 | ​ | 3.67 | ​ | 3.67
Polish Zloty | ​ | 4.37 | ​ | 4.06 | ​ | 4.42 | ​ | 4.08
UF (*) |  | 41.02 |  | 36.69 |  | 40.18 |  | 36.48
Schedule of useful lives of property, plant and equipment | The useful lives used for the depreciation and amortization of assets included in property, plant and equipment in years are presented below:
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Minimum life or |  | Maximum life or |  | Life or average rate
Classes of property, plant and equipment | ​ | rate (years) | ​ | rate (years) | ​ | in years
Mining assets |  | 3 |  | 10 |  | 8
Energy generating assets |  | 5 |  | 16 |  | 10
Buildings |  | 3 |  | 25 |  | 13
Supplies and accessories |  | 4 |  | 10 |  | 8
Office equipment |  | 5 |  | 10 |  | 9
Transport equipment |  | 8 |  | 9 |  | 9
Network and communication equipment |  | 4 |  | 12 |  | 8
IT equipment |  | 5 |  | 10 |  | 8
Machinery, plant and equipment |  | 3 |  | 25 |  | 10
Other fixed assets |  | 3 |  | 15 |  | 9
​
Schedule of useful lives of intangible assets | Minimum and maximum amortization lives or rates of intangible assets:
​ | ​ | ​ | ​ | ​
​ |  | Minimum Life or |  | Maximum Life or
Estimated useful life or amortization rate | ​ | Rate | ​ | Rate
Water rights |  | 5 years |  | Indefinite
Rights of way |  | Indefinite |  | Indefinite
Corfo Mining properties (1) |  | 8 years |  | 8 years
Mining rights |  | Unit-production method
Intellectual property |  | 9 years |  | 9 years
IT programs |  | 3 years |  | 9 years

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