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Partners' equity, net (Details Textual) - USD ($)
 1 Months Ended 12 Months Ended
Dec. 21, 2017
Jan. 02, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Feb. 19, 2019
Jun. 14, 2018
Disclosure Of Partners Equity Net LineItems [Line Items]              
Dividends recognised as distributions to owners     $ 28,420,000 $ 28,135,000 $ 15,021,000    
Payments to acquire or redeem entity's shares     $ 0 $ 0 1,210,000    
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         $ 300,000,000    
Subsidiary Sale Of Stock Shares Approved For Reduction           63,922,565  
Subsidiary Sale Of Stock Shares Approved For Sale             63,922,565
Minera Yanacocha SRL and subsidiary [Member] | Treasury shares [member]              
Disclosure Of Partners Equity Net LineItems [Line Items]              
Number of shares purchased 63,922,565            
Percentage of stock purchased 5.00%            
Payments to acquire or redeem entity's shares $ 47,910,000            
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