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Financial - risk management objectives and policies - Credit risk exposure (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Disclosure of credit risk exposure [line items] |  |
Trade receivables | $ 181,968 | $ 226,112
Trade receivables | $ 159,840 | $ 204,096
Expected credit loss rate | 0.00% | 0.00%
Expected credit loss | $ (31,845) | $ (32,022)
Other receivables | 183,054 | 182,137
Other Receivables | 173,337 | 172,131
Total trade and other receivables | 365,022 | 408,249
Minera Yanacocha SRL and subsidiary [Member] |  |
Disclosure of credit risk exposure [line items] |  |
Trade receivables | $ 29,042 | $ 16,400
Expected credit loss rate | 4.77% | 8.44%
Expected credit loss | $ (1,384) | $ (1,384)
Other receivables | 34,185 | 43,311
Other Receivables | 32,801 | 41,927
Total trade and other receivables | 27,658 | 15,016
Current [member] |  |
Disclosure of credit risk exposure [line items] |  |
Trade receivables | $ 159,840 | $ 204,096
Expected credit loss rate | 0.00% | 0.00%
Expected credit loss | $ 0 | $ 0
Other receivables | 172,116 | 125,409
Total trade and other receivables | 331,956 | 329,505
Not later than one month [member] |  |
Disclosure of credit risk exposure [line items] |  |
Trade receivables | $ 0 | $ 0
Expected credit loss rate | 0.00% | 0.00%
Expected credit loss | $ 0 | $ 0
Other receivables | 0 | 42,390
Total trade and other receivables | 0 | 42,390
Not later than one month [member] | Minera Yanacocha SRL and subsidiary [Member] |  |
Disclosure of credit risk exposure [line items] |  |
Trade receivables | 21,274 | 5,047
Total trade and other receivables | 21,274 | 5,047
Later than one month and not later than three months [member] |  |
Disclosure of credit risk exposure [line items] |  |
Trade receivables | $ 0 | $ 0
Expected credit loss rate | 0.00% | 0.00%
Expected credit loss | $ 0 | $ 0
Other receivables | 1,221 | 4,332
Total trade and other receivables | 1,221 | 4,332
Later than one month and not later than three months [member] | Minera Yanacocha SRL and subsidiary [Member] |  |
Disclosure of credit risk exposure [line items] |  |
Trade receivables | 2,797 | 7,976
Total trade and other receivables | 2,797 | 7,976
Later than three months [member] |  |
Disclosure of credit risk exposure [line items] |  |
Trade receivables | $ 22,128 | $ 22,016
Expected credit loss rate | 100.00% | 100.00%
Expected credit loss | $ (31,845) | $ (32,022)
Other receivables | 9,717 | 10,006
Total trade and other receivables | 31,845 | 32,022
Later than three months [member] | Minera Yanacocha SRL and subsidiary [Member] |  |
Disclosure of credit risk exposure [line items] |  |
Trade receivables | $ 4,971 | $ 3,377
Expected credit loss rate | 27.84% | 40.98%
Expected credit loss | $ (1,384) | $ (1,384)
Total trade and other receivables | $ 3,587 | $ 1,993

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- Definition Amount, before allowance, of receivables classified as other receivables. + References No definition available. + Details
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- Definition The amount of trade receivables and other receivables. + References No definition available. + Details
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- Definition The rate of expected credit losses, calculated as percentage of the gross carrying amount. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph IG20D -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_IG20D&doctype=Implementation%20Guidance -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph 35N -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_35N&doctype=Standard -URIDate 2020-01-01 + Details
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