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Transactions with related parties (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Related Party Transactions [Abstract] |  |  |
Royalty Expense | $ (31,217) | $ (27,611) | $ 27,188
Minera Yanacocha SRL and subsidiary [Member] | S.M.R.L. Chaupiloma Dos de Cajamarca [Member] |  |  |
Related Party Transactions [Abstract] |  |  |
Royalty Expense | (20,739) | (24,339) | (32,414)
Minera Yanacocha SRL and subsidiary [Member] | Newmont Peru S.R.L [Member] |  |  |
Services rendered by [Abstract] |  |  |
Expense arising from exploration for and evaluation of mineral resources | 8,985 | 10,420 | 24,644
Minera Yanacocha SRL and subsidiary [Member] | Newmont USA Limited [Member] |  |  |
Services rendered by [Abstract] |  |  |
Expense arising from exploration for and evaluation of mineral resources | $ 5,607 | $ 6,438 | $ 9,076

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- Definition The amount of expense arising from the search for mineral resources, including minerals, oil, natural gas and similar non-regenerative resources after the entity has obtained legal rights to explore in a specific area, as well as the determination of the technical feasibility and commercial viability of extracting the mineral resource. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 6 -IssueDate 2017-01-01 -Paragraph 24 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=6&date=2017-03-01&anchor=para_24_b&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of expense arising from royalties. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_85&doctype=Standard -URIDate 2017-03-09 + Details
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