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Summary of Significant Accounting Policies (Details)
 12 Months Ended
Dec. 31, 2017
Bottom of range [member]  
Disclosure of subsidiaries [line items]  
Long-term average commodity price period 3 years
Top of range [member]  
Disclosure of subsidiaries [line items]  
Leach column test duration 400 days
Projected metal recovery period 3 years
Long-term average commodity price period 5 years
Weighted average [member]  
Disclosure of subsidiaries [line items]  
Leach column test duration 150 days
Mobile equipment [member] | Bottom of range [member]  
Disclosure of subsidiaries [line items]  
Useful lives of plant and equipment 3 years
Mobile equipment [member] | Top of range [member]  
Disclosure of subsidiaries [line items]  
Useful lives of plant and equipment 7 years
Buildings and plant facilities [member] | Bottom of range [member]  
Disclosure of subsidiaries [line items]  
Useful lives of plant and equipment 25 years
Buildings and plant facilities [member] | Top of range [member]  
Disclosure of subsidiaries [line items]  
Useful lives of plant and equipment 50 years
Huaron mine [member]  
Disclosure of subsidiaries [line items]  
Proportion of ownership interest in subsidiary 100.00%
Morococha mine [member]  
Disclosure of subsidiaries [line items]  
Proportion of ownership interest in subsidiary 92.00%
Alamo Dorado mine [member]  
Disclosure of subsidiaries [line items]  
Proportion of ownership interest in subsidiary 100.00%
La Colorada mine [member]  
Disclosure of subsidiaries [line items]  
Proportion of ownership interest in subsidiary 100.00%
Dolores mine [member]  
Disclosure of subsidiaries [line items]  
Proportion of ownership interest in subsidiary 100.00%
Manantial Espejo Mine and COSE Project [member]  
Disclosure of subsidiaries [line items]  
Proportion of ownership interest in subsidiary 100.00%
Joaquin Project [member]  
Disclosure of subsidiaries [line items]  
Proportion of ownership interest in subsidiary 100.00%
San Vicente mine [member]  
Disclosure of subsidiaries [line items]  
Proportion of ownership interest in subsidiary 95.00%
Navidad project [member]  
Disclosure of subsidiaries [line items]  
Proportion of ownership interest in subsidiary 100.00%