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Partners' equity, net (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Jan. 02, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Disclosure Of Partners Equity Net LineItems [Line Items]        
Dividends recognised as distributions to owners   $ (28,135) $ (15,021) $ (10,488)
Minera Yanacocha SRL and subsidiary [Member]        
Disclosure Of Partners Equity Net LineItems [Line Items]        
Number of shares issued and fully paid   656,484,745    
Applicable Dividend Distribution Tax Rate 5.00% 6.80%    
Dividends recognised as distributions to owners     (300,000)  
Minera Yanacocha SRL and subsidiary [Member] | Ordinary shares [member]        
Disclosure Of Partners Equity Net LineItems [Line Items]        
Number of shares issued and fully paid   1,214,528,739    
Dividends recognised as distributions to owners     $ 300,000