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Revenue from sales (Tables) | 12 Months Ended
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Dec. 31, 2017
Minera Yanacocha SRL and subsidiary [member] |
Disclosure Of Detailed Information About Net Sales To Customers By Geographical Areas [Text Block] | The Company’s revenues are mainly from sales of gold ounces. The table below presents the net sales to customers by geographic region:
|  | 2017 |  | 2016 |  | 2015 |
|  | US$(000) |  | US$(000) |  | US$(000) |
Sales and services by geographic region: |  |  |  |  |  |  |  |  |  |
Metal sales |  |  |  |  |  |  |  |  |  |
Suiza |  |  | 491,887 |  |  | 558,723 |  |  | 754,335 |
America |  |  | 179,018 |  |  | 233,043 |  |  | 315,686 |
|  |  | 670,905 |  |  | 791,766 |  |  | 1,070,021 |
Royalties, note 1(a) and 21 |  |  | (20,739) |  |  | (24,339) |  |  | (32,414) |
Mining royalties to the government |  |  | (4,990) |  |  | (6,234) |  |  | (6,433) |
|  |  | 645,176 |  |  | 761,193 |  |  | 1,031,174 |

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- Definition The disclosure of detailed information about net sales to customers by geographical areas. + References No definition available. + Details
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