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Summary of significant differences between accounting principles followed by the Company and U.S. Generally Accepted Accounting Principles (Details) - USD ($)
$ in Thousands
 12 Months Ended 48 Months Ended
Dec. 31, 2020
Dec. 31, 2016
Dec. 31, 2016
Disclosure of Summary of significant differences between accounting principles followed by the Company and U.S. Generally Accepted Accounting Principles [Line Items]      
Impairment loss   $ 0  
US GAAP [Member] | Minimum      
Disclosure of Summary of significant differences between accounting principles followed by the Company and U.S. Generally Accepted Accounting Principles [Line Items]      
Percentage of Events Likely To Occur 70.00%    
US GAAP [Member] | Maximum      
Disclosure of Summary of significant differences between accounting principles followed by the Company and U.S. Generally Accepted Accounting Principles [Line Items]      
Percentage of Events Likely To Occur 80.00%    
Conga [Member]      
Disclosure of Summary of significant differences between accounting principles followed by the Company and U.S. Generally Accepted Accounting Principles [Line Items]      
Impairment loss     $ 1,126,543
Yanacocha mine [Member]      
Disclosure of Summary of significant differences between accounting principles followed by the Company and U.S. Generally Accepted Accounting Principles [Line Items]      
Impairment loss   $ 933,200 $ 1,342,645