XML 195 R210.htm IDEA: XBRL DOCUMENT v3.20.1
Operating expenses, net (Details) - Minera Yanacocha SRL and subsidiary [Member] - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of Operating Expenses [line items]      
Operating expenses, net $ 35,987 $ 76,155 $ 63,514
Exploration and advanced projects [Member]      
Disclosure of Operating Expenses [line items]      
Operating expenses, net 33,669 62,643 51,694
Severance program [Member]      
Disclosure of Operating Expenses [line items]      
Operating expenses, net 2,210 8,678 9,419
Cost of fixed assets sold [Member]      
Disclosure of Operating Expenses [line items]      
Operating expenses, net 2,092 5,445 1,632
Tax fine [Member]      
Disclosure of Operating Expenses [line items]      
Operating expenses, net 2,019 3,954 0
Write-off of fixed assets [Member]      
Disclosure of Operating Expenses [line items]      
Operating expenses, net 1,204 0 1,368
Income from fixed asset sales [Member]      
Disclosure of Operating Expenses [line items]      
Operating expenses, net (8,088) (4,821) (2,235)
Others, net [Member]      
Disclosure of Operating Expenses [line items]      
Operating expenses, net $ 2,881 $ 256 $ 1,636