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Trade and other payables (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2007
Trade payables      
Trade payables $ 194,757 $ 234,117  
Other payables      
Other payables 62 3  
Other current payables 39,261 55,305  
Trade and other current payables 233,355 273,440  
Classification by maturity:      
Trade and other current payables 233,355 273,440  
Trade and other non-current payables 663 15,982  
Classification by nature:      
Trade and other payables (87,839) (130,772)  
Minera Yanacocha SRL and subsidiary [Member]      
Trade payables      
Accounts payable 53,070 44,634 $ 43,108
Other payables      
Other current payables 30,750 12,788  
Trade and other current payables 83,820 66,474  
Classification by maturity:      
Trade and other current payables 83,820 66,474  
Sociedad Minera Cerro Verde S.A.A. [Member]      
Trade payables      
Accounts payable 194,958 168,357  
Other payables      
Other current payables 40,182 3,619  
Classification by nature:      
Current payables for purchase of non-current assets 33,700 12,700  
Domestic suppliers [Member]      
Trade payables      
Trade payables 194,742 232,745  
Domestic suppliers [Member] | Minera Yanacocha SRL and subsidiary [Member]      
Trade payables      
Accounts payable 43,108 44,634  
Related entities [Member]      
Trade payables      
Trade payables [1] 15 1,372  
Other payables      
Other payables [1] 62 3  
Related entities [Member] | Minera Yanacocha SRL and subsidiary [Member]      
Trade payables      
Accounts payable [2] 9,962 9,052  
Taxes payable [Member]      
Other payables      
Other payables 9,405 16,708  
Taxes payable [Member] | Minera Yanacocha SRL and subsidiary [Member]      
Other payables      
Other current payables 2,605 3,174  
Non-controlling interests [member]      
Other payables      
Other payables 0 15,661  
Remuneration and similar benefits payable [Member]      
Other payables      
Other payables 11,585 9,796  
Remuneration and similar benefits payable [Member] | Minera Yanacocha SRL and subsidiary [Member]      
Other payables      
Other current payables 27,419 8,516  
Royalties payable to the Peruvian State [Member]      
Other payables      
Other payables 4,571 3,670  
Royalties payable to the Peruvian State [Member] | Minera Yanacocha SRL and subsidiary [Member]      
Other payables      
Other current payables 726 1,098  
Dividends payable [Member]      
Other payables      
Other payables 730 1,018  
Other liability [Member]      
Other payables      
Other payables 5,756 4,196  
Financial payables [Member]      
Classification by nature:      
Trade and other payables 220,042 269,044  
Non financial payables [Member]      
Classification by nature:      
Trade and other payables $ 13,976 $ 20,378  
[1] Trade payables arise mainly from the acquisition of material, supplies and spare parts and services provided by third parties. These obligations have current maturities, accrue no interest and are not secured.
[2] Trade payables arise mainly from the acquisition of materials, supplies and spare parts and services provided by third parties. These obligations, have current maturities, accrue no interest, are not secured and are mostly denominated in U.S. dollars.