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Significant accounting policies (Details 2) | 12 Months Ended
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Dec. 31, 2020
Water rights and rights of way [member] | Bottom of range [member] |
Significant accounting policies [Line Items] |
Description of useful life, intangible assets other than goodwill | Indefinite
Water rights and rights of way [member] | Top of range [member] |
Significant accounting policies [Line Items] |
Description of useful life, intangible assets other than goodwill | Indefinite
Mining rights granted by Corfo [member] | Bottom of range [member] |
Significant accounting policies [Line Items] |
Useful life measured as period of time, intangible assets other than goodwill | 10 years
Mining rights granted by Corfo [member] | Top of range [member] |
Significant accounting policies [Line Items] |
Useful life measured as period of time, intangible assets other than goodwill | 10 years
Mining rights [member] |
Significant accounting policies [Line Items] |
Description of useful life, intangible assets other than goodwill | Unit-production method
IT programs [member] | Bottom of range [member] |
Significant accounting policies [Line Items] |
Useful life measured as period of time, intangible assets other than goodwill | 2 years
IT programs [member] | Top of range [member] |
Significant accounting policies [Line Items] |
Useful life measured as period of time, intangible assets other than goodwill | 8 years

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- Definition Description of useful life used for intangible assets other than goodwill. [Refer: Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_a&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The useful life, measured as period of time, used for intangible assets other than goodwill. [Refer: Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2020-01-01 -Paragraph 118 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2020-en-r&anchor=para_118_a&doctype=Standard -URIDate 2020-01-01 + Details
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- References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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