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Transactions with associates companies (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure Of Transactions with associates companies [Abstract] |
Disclosure of detailed information of transactions with associates companies [Text Block] | The Group has carried out the following transactions with its associates in the years 2017, 2016 and 2015:
|  | 2017 |  | 2016 |  | 2015 |
|  | US$(000) |  | US$(000) |  | US$(000) |
Royalties collected to Minera Yanacocha S.R.L.: |  |  |  |  |  |  |  |  |  |
S.M.R.L. Chaupiloma Dos de Cajamarca (c) |  |  | 20,739 |  |  | 24,339 |  |  | 32,414 |
Services provided to Minera Yanacocha S.R.L. by: |  |  |  |  |  |  |  |  |  |
Consorcio Energético de Huancavelica S.A. (operation and maintenance) |  |  | 381 |  |  | 915 |  |  | 1,694 |
Buenaventura Ingenieros S.A (execution of specific work orders) |  |  | 227 |  |  | 177 |  |  | 845 |
Consorcio Energético de Huancavelica S.A. (energy transmission) |  |  | 212 |  |  | - |  |  | - |
|  | 2017 |  | 2016 |  | 2015 |
|  | US$(000) |  | US$(000) |  | US$(000) |
Dividends received by: |  |  |  |  |  |  |  |  |  |
Compañía Minera Coimolache S.A. |  |  | 9,823 |  |  | 11,390 |  |  | 6,691 |
Minera Yanacocha S.R.L. |  |  | - |  |  | 130,950 |  |  | - |
Loans collected (granted) to: |  |  |  |  |  |  |  |  |  |
Sociedad Minera Cerro Verde S.A.A. |  |  | 124,800 |  |  | - |  |  | (124,800) |
Sales of supplies to Compañía Minera Coimolache S.A. by: |  |  |  |  |  |  |  |  |  |
Compañía de Minas Buenaventura S.A.A. |  |  | 2 |  |  | 1 |  |  | 56 |
Minera La Zanja S.R.L. |  |  | 2 |  |  | - |  |  | 74 |
Sales of mineral to Minera Yanacocha S.R.L. by: |  |  |  |  |  |  |  |  |  |
Minera La Zanja S.R.L. |  |  | 710 |  |  | - |  |  | - |
Compañía de Minas Buenaventura S.A.A. |  |  | 704 |  |  | 1,271 |  |  | 2,114 |
Interest income over loans granted by Compañía Minera Coimolache S.A. to: |  |  |  |  |  |  |  |  |  |
Consorcio Energético de Huancavelica S.A.A. |  |  | - |  |  | 3 |  |  | 19 |
Supplies purchase to Compañía Minera Coimolache S.A. by: |  |  |  |  |  |  |  |  |  |
Consorcio Energético de Huancavelica S.A.A. |  |  | 18 |  |  | 10 |  |  | 1 |
Minera La Zanja S.R.L. |  |  | 6 |  |  | 10 |  |  | 6 |
Buenaventura Ingenieros S.A. |  |  | 4 |  |  | - |  |  | - |
Compañía de Minas Buenaventura S.A.A. |  |  | - |  |  | 1 |  |  | 29 |
Interest income over loans granted by associates, note 26(a) |  |  | 1,685 |  |  | 4,164 |  |  | 2,286 |
Services provided to Compañía Minera Coimolache S.A. by: |  |  |  |  |  |  |  |  |  |
Empresa de Generación Huanza S.A. (sale of energy) |  |  | 2,137 |  |  | 1,679 |  |  | 1,676 |
Consorcio Energético de Huancavelica S.A. (construction services) |  |  | 1,332 |  |  | 1,152 |  |  | 346 |
Buenaventura Ingenieros S.A (execution of specific work orders) |  |  | 835 |  |  | 824 |  |  | 471 |
Consorcio Energético de Huancavelica S.A. (operation and maintenance) |  |  | 178 |  |  | 332 |  |  | 559 |
Services provided by to Sociedad Minera Cerro Verde S.A.A. by: |  |  |  |  |  |  |  |  |  |
Buenaventura Ingenieros S.A (execution of specific work orders) |  |  | 57 |  |  | - |  |  | - |
|  | 2017 |  | 2016 |  | 2015 |
|  | US$(000) |  | US$(000) |  | US$(000) |
Services received by Compañía Minera Coimolache S.A. for: |  |  |  |  |  |  |  |  |  |
Minera La Zanja S.R.L. (administrative services) |  |  | 149 |  |  | 200 |  |  | - |
Purchase of assets of Compañía Minera Coimolache S.A. from: |  |  |  |  |  |  |  |  |  |
Consorcio Energético de Huancavelica S.A. (operation and maintenance) |  |  | 336 |  |  | - |  |  | - |
Disclosure Detailed information of accounts receivable and payable fromto associates [Text Block] | As a result of the transactions indicated in the paragraph (a), the Group had the following accounts receivable and payable from/to associates:
|  | 2017 |  | 2016 |
|  | US$(000) |  | US$(000) |
Trade and other receivables, note 7(a) - |  |  |  |  |  |  |
Trade receivables |  |  |  |  |  |  |
Minera Yanacocha S.R.L. (c) |  |  | 6,740 |  |  | 7,079 |
Compañía Minera Coimolache S.A. |  |  | 592 |  |  | 681 |
Sociedad Minera Cerro Verde S.A.A. |  |  | 16 |  |  | - |
|  |  | 7,348 |  |  | 7,760 |
Other receivables |  |  |  |  |  |  |
Compañía Minera Coimolache S.A. |  |  | 732 |  |  | 240 |
Sociedad Minera Cerro Verde S.A.A. (d) |  |  | - |  |  | 126,050 |
Minera Yanacocha S.R.L. |  |  | - |  |  | 379 |
|  |  | 732 |  |  | 126,669 |
Total trade and other receivables |  |  | 8,080 |  |  | 134,429 |
Classification by maturity: |  |  |  |  |  |  |
Current portion |  |  | 8,080 |  |  | 8,379 |
Non-current portion |  |  | - |  |  | 126,050 |
Total trade and other receivables |  |  | 8,080 |  |  | 134,429 |
Trade and other payables, note 14(a) - |  |  |  |  |  |  |
Trade payables |  |  |  |  |  |  |
Compañía Minera Coimolache S.A. |  |  | 15 |  |  | 25 |
Minera Yanacocha S.R.L. |  |  | - |  |  | 1,347 |
|  |  | 15 |  |  | 1,372 |
Other payables |  |  |  |  |  |  |
Compañía Minera Coimolache S.A. |  |  | 42 |  |  | 3 |
Other |  |  | 20 |  |  | - |
|  |  | 62 |  |  | 3 |
Total trade and other payables |  |  | 77 |  |  | 1,375 |
Disclosure of amounts incurred by entity for provision of key management personnel services provided by separate management entities [text block] | The Group’s key executives’ compensation (including the related income taxes assumed by the Group) for the years 2017 and 2016 are presented below:
|  | 2017 |  | 2016 |
|  | US$(000) |  | US$(000) |
Accounts payable: |  |  |  |  |  |  |
Directors’ remuneration |  |  | 1,641 |  |  | - |
Salaries |  |  | 1,257 |  |  | 1,034 |
Directors’ compensations |  |  | 1,200 |  |  | 1,016 |
Other payments to officers |  |  | 1,899 |  |  | 598 |
|  |  | 5,997 |  |  | 2,648 |
Disbursements: |  |  |  |  |  |  |
Salaries |  |  | 10,530 |  |  | 9,922 |

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