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Operating expenses, net (Tables)
 12 Months Ended
Dec. 31, 2018
Minera Yanacocha SRL and subsidiary [member]  
Disclosure Of Detailed Information About Operating Expenses,net [Text Block]
This caption is made up as follows:
 
 
 
2018
 
 
2017
 
 
2016
 
 
 
US$(000)
 
 
US$(000)
 
 
US$(000)
 
 
 
 
 
 
 
 
 
 
 
Exploration and advanced projects
 
 
62,643
 
 
 
51,694
 
 
 
49,580
 
Severance program
 
 
8,678
 
 
 
9,419
 
 
 
9,659
 
Cost of fixed assets sold
 
 
5,445
 
 
 
1,632
 
 
 
160
 
Income from fixed assets sold
 
 
(4,821
)
 
 
(2,235
)
 
 
(471
)
Tax fine
 
 
3,954
 
 
 
-
 
 
 
-
 
Others, net
 
 
256
 
 
 
1,636
 
 
 
(1,468
)
Write-off of fixed assets
 
 
-
 
 
 
1,368
 
 
 
14,036
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
76,155
 
 
 
63,514
 
 
 
71,496