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Investments in associates (Details 2) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | --- | ---
Disclosure of Investments in associates [Line Items] |  |  |  |
Current assets | $ 701,862 | $ 501,928 |  |
Non-current assets | 3,630,951 | 3,764,487 |  |
Current liabilities | 521,194 | 445,125 |  |
Non-current liabilities | 747,992 | 774,077 |  |
Shareholders’ equity, reported | 3,063,627 | 3,047,213 | $ 3,389,236 | $ 3,762,125
Investments in associates | 1,536,887 | 1,536,607 | 2,043,983 |
Minera Yanacocha S.R.L. [Member] |  |  |  |
Disclosure of Investments in associates [Line Items] |  |  |  |
Current assets | 1,055,135 | 1,107,893 |  |
Non-current assets | 964,260 | 937,992 |  |
Current liabilities | 123,315 | (135,136) |  |
Non-current liabilities | (1,236,965) | (1,025,025) |  |
Shareholders’ equity, reported | 659,115 | 885,724 |  |
Groups’ interest (45.95% in 2017 and 43.65% in 2016) | 302,863 | 386,618 |  |
Goodwill | 21,998 | 16,248 |  |
Investments in associates | $ 324,861 | $ 402,866 | $ 0 |

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