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Identification and business activity (Details Textual) lb in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 USD ($) lb t bbl | Dec. 31, 2017 USD ($) lb | Dec. 31, 2016 USD ($) lb
Disclosure of identification and business activity [Line Items] |  |  |
Proceeds from sales of property, plant and equipment, classified as investing activities | $ 2,240 | $ 1,962 | $ 7,180
Assets | 4,217,221 | 4,332,813 | 4,266,415
Reversal of impairment loss | $ 0 | $ (11,770) | $ 0
Processing Capacity | t | 548,500 |  |
Concentrator Facility Capacity | t | 409,500 |  |
Pre Expansion Capacity Approved | t | 361,500 |  |
Capacity of Crushed Leach Facility | t | 39,000 |  |
Run Of Mine Capacity | t | 100,000 |  |
Quecher Main project [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Average production capacity | bbl | 200,000 |  |
Minera Yanacocha SRL and subsidiary [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Volume of gold produced | lb | 520 | 530 | 660
Description Of Location of Entity Operation | The Company's operations are located approximately 375 miles (604 kilometers) north of Lima and 30 miles (48 kilometers) north of the city of Cajamarca and are primarily accessible by paved roads. The Yanacocha property began production in 1993 and consists of the following open pit mines: the La Quinua Complex, the Yanacocha Complex, the Carachugo Complex and Maqui Maqui. In addition, The Company has four leach pads (La Quinua, Yanacocha, Carachugo and Maqui Maqui), three gold processing plants (Pampa Larga, Yanacocha Norte and La Quinua), one limestone processing facility (China Linda) and one mill (Yanacocha Gold Mill). |  |
Sociedads Mineras Cerro Verde Saa [Member] | Quecher Main project [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Average production capacity | bbl | 200,000,000 |  |
Newmont Second Capital Corporation [Member] | Minera Yanacocha SRL and subsidiary [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 51.35% |  |
S.M.R.L. Chaupiloma Dos de Cajamarca [Member] | Minera Yanacocha SRL and subsidiary [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Royalty rate on net sales | 3.00% |  |
Newmont Mining Corporation [Member] | Minera Yanacocha SRL and subsidiary [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 100.00% |  |
Cyprus Climax Metals [Member] | Sociedads Mineras Cerro Verde Saa [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 53.56% |  |
SMM Cerro Verde Netherlands B.V [Member] | Sociedads Mineras Cerro Verde Saa [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proportion of ownership interests held by non-controlling interests | 21.00% |  |
Compania de Minas Buenaventura S.A.A. [Member] | Sociedads Mineras Cerro Verde Saa [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proportion of ownership interests held by non-controlling interests | 19.58% |  |
other stakeholders [Member] | Sociedads Mineras Cerro Verde Saa [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proportion of ownership interests held by non-controlling interests | 5.86% |  |
Mining activities [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Losses on disposals of non-current assets |  | $ 4,000 |
Reversal of impairment loss |  | $ 11,800 |
El Brocal [Member] | Mining activities [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proportion of voting rights held in subsidiary | 61.43% | 61.43% |
El Brocal [Member] | Mining activities [Member] | Indirect [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proportion of voting rights held in subsidiary | 58.24% | 58.24% |
Colquijirca S.A. [Member] | Mining activities [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proportion of voting rights held in subsidiary | 99.99% | 99.99% |
Antapite [Member] | Mining activities [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proceeds from sales of property, plant and equipment, classified as investing activities |  |  | $ 1,000
Losses on disposals of non-current assets |  |  | $ 3,000
Compania Minera Condesa S.A. [Member] | Minera Yanacocha SRL and subsidiary [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proportion of ownership interests held by non-controlling interests | 43.65% |  |
Compania Minera Condesa S.A. [Member] | Mining activities [Member] | Indirect [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 0.00% | 0.00% |
Minas Buenaventura S.A.A [Member] | Minera Yanacocha SRL and subsidiary [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proportion of ownership interest in subsidiary | 100.00% |  |
Breapampa [Member] | Mining activities [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proceeds from sales of property, plant and equipment, classified as investing activities |  | $ 2,000 |
Reversal of impairment loss | $ 7,400 |  |
Recuperada [Member] | Mining activities [Member] |  |  |
Disclosure of identification and business activity [Line Items] |  |  |
Proceeds from sales of property, plant and equipment, classified as investing activities |  | $ 600 |
Reversal of impairment loss | $ 7,100 |  |

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