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Other non-financial assets (Tables) | 12 Months Ended
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Dec. 31, 2017
Sociedad Minera Cerro Verde S.A.A. [Member] |
Disclosure of other non financial assets [Line Items] |
Disclosure of detailed information about other non financial assets [Table Text Block] | This item is made up as follows:
|  | December 31, |  | December 31, |
|  | 2017 |  | 2016 |
|  | US$(000) |  | US$(000) |
Current |  |  |  |  |  |  |
Value added tax (VAT) credit |  |  | 18,153 |  |  | 308,177 |
Other taxes to be recovered |  |  | 2,929 |  |  | 2,830 |
Total current |  |  | 21,082 |  |  | 311,007 |
Non-current |  |  |  |  |  |  |
Other receivables (a) |  |  | 184,802 |  |  | 180,741 |
Income tax prepayments (b) |  |  | 4,212 |  |  | 19,550 |
Installment program (mining royalties case) (c) |  |  | - |  |  | 96,233 |
Total non-current |  |  | 189,014 |  |  | 296,524 |
Total other non-financial assets |  |  | 210,096 |  |  | 607,531 |
| (a) | Represents disbursement made by the Company in connection with disputed tax assessments related to reviews by SUNAT (Superintendencia Nacional de Administración Tributaria) from years 2004 to 2011 (see Note 14(c) and 14(e)). According to current tax procedures and the time frame for resolving these types of claims, management and its legal advisors expect resolution of this matter will be favorable to the Company and amounts will be recoverable.
| (b) | Represents disbursements made by the Company for the prepayment of income tax, which the Company expects to use to offset future tax obligations or will be refunded to the Company by SUNAT (see Note 14(b)).
| (c) | The balance as of December 31, 2016, represented payments made under protest by the Company for an installment program approved by SUNAT associated with mining royalties for the period December 2006 to December 2008. As of result of the October 2017, Peruvian Supreme Court ruling on the 2008 royalty assessments, these payments were applied to the provision for royalties (see Notes 12 and 14(d)).

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