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Cost of sales | 12 Months Ended
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Dec. 31, 2017
Disclosure of cost of sales [Line Items] |
Disclosure of cost of sales [text block] |
21. | Cost of sales, without considering depreciation and amortization
| (a) | The cost of sales of goods is made up as follows:
|  | 2017 |  | 2016 |  | 2015 |
|  | US$(000) |  | US$(000) |  | US$(000) |
Beginning balance of finished goods and products in process, net of depreciation and amortization |  |  | 58,633 |  |  | 69,932 |  |  | 105,944 |
Cost of production |  |  |  |  |  |  |  |  |  |
Services provided by third parties |  |  | 262,195 |  |  | 211,325 |  |  | 230,148 |
Consumption of materials and supplies |  |  | 134,070 |  |  | 100,401 |  |  | 100,241 |
Direct labor |  |  | 87,886 |  |  | 72,344 |  |  | 66,745 |
Electricity and water |  |  | 44,345 |  |  | 41,989 |  |  | 34,972 |
Rentals |  |  | 26,591 |  |  | 10,852 |  |  | 5,783 |
Maintenance and repair |  |  | 22,839 |  |  | 17,792 |  |  | 7,401 |
Transport |  |  | 16,254 |  |  | 10,880 |  |  | 9,502 |
Insurances |  |  | 6,637 |  |  | 4,347 |  |  | 5,247 |
Provision (reversal) for impairment of finished goods and product in progress, note 8(b) |  |  | 2,118 |  |  | (7,581) |  |  | 13,096 |
Cost of concentrate purchased to associates |  |  | 439 |  |  | 2,958 |  |  | - |
Other production expenses |  |  | 10,464 |  |  | 9,789 |  |  | 7,078 |
Total cost of production of the period |  |  | 613,838 |  |  | 475,096 |  |  | 480,213 |
Final balance of products in process and finished goods, net of depreciation and amortization |  |  | (45,038) |  |  | (47,216) |  |  | (72,667) |
Cost of sales of goods, without considering depreciation and amortization |  |  | 627,433 |  |  | 497,812 |  |  | 513,490 |
| (a) | The cost of services is made up as follows:
|  | 2017 |  | 2016 |  | 2015 |
|  | US$(000) |  | US$(000) |  | US$(000) |
Direct labor |  |  | 7,398 |  |  | 5,983 |  |  | 18,314 |
Services provided by third parties |  |  | 1,782 |  |  | 1,689 |  |  | 16,247 |
Consumption of materials and supplies |  |  | 1,026 |  |  | 868 |  |  | 7,865 |
Maintenance and repair |  |  | 946 |  |  | 217 |  |  | 637 |
Electricity and water |  |  | 586 |  |  | 633 |  |  | 7,134 |
Rentals |  |  | 423 |  |  | 480 |  |  | 2,544 |
Insurances |  |  | 246 |  |  | 212 |  |  | 1,233 |
Transport |  |  | 98 |  |  | 213 |  |  | 3,868 |
Other |  |  | 449 |  |  | 459 |  |  | 1,770 |
Cost of sales of services, without considering depreciation and amortization |  |  | 12,954 |  |  | 10,754 |  |  | 59,612 |
Sociedad Minera Cerro Verde S.A.A. [Member] |
Disclosure of cost of sales [Line Items] |
Disclosure of cost of sales [text block] |
16. | Cost of sales
This item is made up as follows:
|  | For the year ended |  | For the year ended |  | For the year ended |
|  | December 31, 2017 |  | December 31, 2016 |  | December 31, 2015 |
|  | US$(000) |  | US$(000) |  | US$(000) |
Materials and supplies |  |  | 556,022 |  |  | 496,918 |  |  | 364,234 |
Depreciation and amortization |  |  | 456,467 |  |  | 472,997 |  |  | 244,477 |
Labor (a) |  |  | 286,058 |  |  | 215,839 |  |  | 146,395 |
Energy |  |  | 229,272 |  |  | 229,035 |  |  | 118,019 |
Third parties services |  |  | 144,829 |  |  | 100,897 |  |  | 95,087 |
Change in work in process inventory |  |  | 51,412 |  |  | (3,789) |  |  | (118,327) |
Management Fees |  |  | 2,867 |  |  | 2,793 |  |  | 3,565 |
Change in finished goods inventory |  |  | 2,060 |  |  | (3,951) |  |  | 467 |
Other costs |  |  | 39,251 |  |  | 42,301 |  |  | 8,087 |
|  |  | 1,768,238 |  |  | 1,553,040 |  |  | 862,004 |
| (a) | Labor includes an expense of US$86.4 million related to profit sharing for the year ended December 31, 2017 (US$36.8 million for the year ended December 31, 2016 and credit of US$1.6 million for the year ended December 31, 2015).
In compliance with corporate policies, the Company recognizes administrative costs directly to cost of production (approximately U$34.4 million for the year ended December 31, 2017, and US$23.4 million for the year ended December 31, 2016 and US$19.5 million for the year ended December 31, 2015). The effect of this policy is immaterial to the financial statements as a whole.
Minera Yanacocha SRL and subsidiary [Member] |
Disclosure of cost of sales [Line Items] |
Disclosure of cost of sales [text block] |
16. | Costs applicable to sales
This caption is made up as follows:
|  | 2017 |  | 2016 |  | 2015 |
|  | US$(000) |  | US$(000) |  | US$(000) |
Beginning balance of finished goods and in-process |  |  | 446,503 |  |  | 544,325 |  |  | 660,763 |
Beginning balance of provision for net realizable value, note 8(b) |  |  | (84,374) |  |  | (90,298) |  |  | (163,094) |
Consumption of supplies |  |  | 240,881 |  |  | 228,376 |  |  | 210,384 |
Personnel expenses |  |  | 99,702 |  |  | 87,258 |  |  | 102,867 |
Other services |  |  | 66,408 |  |  | 73,779 |  |  | 82,787 |
Maintenance |  |  | 24,033 |  |  | 36,213 |  |  | 38,646 |
Power |  |  | 23,565 |  |  | 27,270 |  |  | 27,713 |
Depreciation and amortization |  |  | 87,783 |  |  | 140,712 |  |  | 223,142 |
Workers' profit participation |  |  | 1,242 |  |  | 12,394 |  |  | 28,852 |
Reclamation expenses related to leach pads, note 12(b) |  |  | 124,124 |  |  | 78,494 |  |  | - |
Ending balance of provision for net realizable value, note 8(b) |  |  | 62,540 |  |  | 84,374 |  |  | 90,298 |
Ending balance of finished goods and in-process |  |  | (345,489) |  |  | (446,503) |  |  | (544,325) |
|  |  | 746,918 |  |  | 776,394 |  |  | 758,033 |

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