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Summary of Significant Accounting Policies (Details) | 12 Months Ended
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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%

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