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v3.19.1

Investments in associates and joint ventures (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of Investments in associates [Line Items] |  |  |
Proportion of ownership interest in associate | 43.65% |  |
Joint ventures | $ 2,673 | $ 0 |
Investments in associates | 1,473,382 | 1,536,887 | $ 1,536,607
Investment In Associates And Joint Ventures | $ 1,473,382 | $ 1,536,887 |
Sociedad Minera Cerro Verde S.A.A. [Member] |  |  |
Disclosure of Investments in associates [Line Items] |  |  |
Proportion of ownership interest in associate | 19.58% | 19.58% |
Investments in associates | $ 1,108,284 | $ 1,124,008 |
Compania Minera Coimolache S.A. [Member] |  |  |
Disclosure of Investments in associates [Line Items] |  |  |
Proportion of ownership interest in associate | 40.10% | 40.10% |
Investments in associates | $ 0 | $ 0 | 0
Minera Yanacocha S.R.L. [Member] |  |  |
Disclosure of Investments in associates [Line Items] |  |  |
Proportion of ownership interest in associate | 43.65% | 45.95% |
Investments in associates | $ 0 | $ 0 | $ 0
Other minor investments [Member] |  |  |
Disclosure of Investments in associates [Line Items] |  |  |
Investments in associates | 1,835 | 1,835 |
Investment In Associates Excluding Minor Investments [Member] |  |  |
Disclosure of Investments in associates [Line Items] |  |  |
Investments in associates | $ 1,468,874 | $ 1,535,052 |

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- Definition The amount of investments in associates in an entity's separate financial statements. [Refer: Associates [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2018-01-01 -Paragraph 10 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_10&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of investments in joint ventures in an entity's separate financial statements. [Refer: Joint ventures [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2018-01-01 -Paragraph 10 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2018-03-01&anchor=para_10&doctype=Standard -URIDate 2018-03-16 + Details
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