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Provisions (Details Textual) - USD ($)
 12 Months Ended
Dec. 07, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Jun. 27, 2016
Dec. 31, 2014
Disclosure of provisions [Line Items]            
Provision for closure of mining units and exploration projects at future value   $ 230,900,000        
Provision for closure of mining units and exploration projects at present value   200.2        
Provision for closure of mining units and exploration projects   200,183,000 $ 206,462,000 $ 166,403,000    
Letter of credit   109,600,000 117,700,000      
Reclamation Expense   $ 109 78,000,000      
Employee's profit share on annual taxable income   8.00%        
Other provisions   $ 3,695,000 1,703,000      
Notional amount   275,000,000 275,000,000   $ 275,000,000  
Non-current provisions   $ 164,877,000 174,190,000      
Future value of non current provisions     $ 368,800,000      
Annual risk free rate   2.73% 2.97%      
Provision for obligations with communities   $ 19,376,000 $ 4,710,000      
Increase (decrease) through transfers and other changes, other provisions   3,700,000        
Disputed mining royalties, noncurrent   127,500,000        
Net asset tax included in provisions   19,600,000        
Penalties of royalties   1,400,000        
Income and non-income tax contingencies included in other long-term liabilities   11,400,000        
Ministry of Energy and Mines [Member]            
Disclosure of provisions [Line Items]            
Notional amount   35,500,000        
Provision for remediation and mine closure [Member]            
Disclosure of provisions [Line Items]            
Non-current provisions   156,900,000 153,300,000      
Future value of non current provisions   374,400,000        
Increase (decrease) through transfers and other changes, other provisions   (3,710,000) (16,091,000)      
La Joya [Member] | Irrigation Project [Member] | Provision for social commitments [Member]            
Disclosure of provisions [Line Items]            
Other provisions   5,500,000        
Alata-Congata Road [Member] | Repaving Project [Member] | Provision for social commitments [Member]            
Disclosure of provisions [Line Items]            
Other provisions   $ 5,500,000        
Number of days of work [Member]            
Disclosure of provisions [Line Items]            
Percentage of distribution   50.00%        
Annual salary levels [Member]            
Disclosure of provisions [Line Items]            
Percentage of distribution   50.00%        
Gross carrying amount [member]            
Disclosure of provisions [Line Items]            
Additions other than through business combinations, property, plant and equipment   $ 277,824,000 408,898,000      
Gross carrying amount [member] | Asset retirement and mine closure cost asset [member]            
Disclosure of provisions [Line Items]            
Additions other than through business combinations, property, plant and equipment     352,000,000      
Minera Yanacocha SRL and subsidiary [Member]            
Disclosure of provisions [Line Items]            
Provision for closure of mining units and exploration projects   1,234,731,000 [1] 1,012,888,000 [1] 578,959,000   $ 557,457,000
Additional provisions made to reclamation obligations $ 430,000,000 221,450,000 430,292,000 10,434,000    
Reclamation Expense   124,124,000 78,494,000 $ 0    
Other provisions   3,243,000 23,809,000      
Non-current provisions   1,236,965,000 1,025,025,000      
Minera Yanacocha SRL and subsidiary [Member] | Gross carrying amount [member]            
Disclosure of provisions [Line Items]            
Additions other than through business combinations, property, plant and equipment   148,950,000 456,908,000      
Minera Yanacocha SRL and subsidiary [Member] | Gross carrying amount [member] | Asset retirement and mine closure cost asset [member]            
Disclosure of provisions [Line Items]            
Additions other than through business combinations, property, plant and equipment   $ 97,326,000 $ 351,798,000      
Bottom of range [member]            
Disclosure of provisions [Line Items]            
Actuarial assumption of discount rates   0.30% 1.40%      
Top of range [member]            
Disclosure of provisions [Line Items]            
Discount rate used to reflect time value of money for provisions   3.55%        
Notional amount           $ 800
Actuarial assumption of discount rates   2.90% 4.20%      
[1] Provision for closure of mining units and explorations projects - The Company's mining and exploration activities are subject to various laws and regulations governing the protection of the environment. These laws and regulations are continually changing and are generally becoming more restrictive. The Company conducts its operations so as to protect the public health and environment and believes its operations are in compliance with all applicable laws and regulations in all material respects. The Company has made, and expects to make in the future, expenditures to comply with such laws and regulations, but cannot predict the amount of such future expenditures. Estimated future reclamation costs are based principally on legal and regulatory requirements.