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Tax situation (Details 3) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 USD ($)
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | $ 256,555
Tax Assesments, penalties and interest expenses | 607,528
Year 2003 - 2005 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 12,220
Tax Assesments, penalties and interest expenses | 58,930
Year 2006 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 10,990
Tax Assesments, penalties and interest expenses | 62,928
Year 2007 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 12,376
Tax Assesments, penalties and interest expenses | 30,221
Year 2008 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 20,797
Tax Assesments, penalties and interest expenses | 33,765
Year 2009 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 56,388
Tax Assesments, penalties and interest expenses | 107,607
Year 2010 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 62,581
Tax Assesments, penalties and interest expenses | 167,806
Year 2011 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 49,055
Tax Assesments, penalties and interest expenses | 114,123
Year 2014 -2017 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 32,148
Tax Assesments, penalties and interest expenses | 32,148
Sociedad Minera Cerro Verde S.A.A. [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 256,555
Tax Assesments, penalties and interest expenses | 350,973
Tax Assesments,estimated possible losses including penalties and interest expenses | 607,528
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2003 - 2005 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 12,220
Tax Assesments, penalties and interest expenses | 46,710
Tax Assesments,estimated possible losses including penalties and interest expenses | 58,930
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2006 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 10,990
Tax Assesments, penalties and interest expenses | 51,938
Tax Assesments,estimated possible losses including penalties and interest expenses | 62,928
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2007 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 12,376
Tax Assesments, penalties and interest expenses | 17,845
Tax Assesments,estimated possible losses including penalties and interest expenses | 30,221
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2008 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 20,797
Tax Assesments, penalties and interest expenses | 12,968
Tax Assesments,estimated possible losses including penalties and interest expenses | 33,765
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2009 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 56,388
Tax Assesments, penalties and interest expenses | 51,219
Tax Assesments,estimated possible losses including penalties and interest expenses | 107,607
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2010 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 62,581
Tax Assesments, penalties and interest expenses | 105,225
Tax Assesments,estimated possible losses including penalties and interest expenses | 167,806
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2011 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 49,055
Tax Assesments, penalties and interest expenses | 65,068
Tax Assesments,estimated possible losses including penalties and interest expenses | 114,123
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2014 -2017 [Member] |
Disclosure Of Income Tax Explanatory [Line Items] |
Tax assesments, Estimated possible losses | 32,148
Tax Assesments, penalties and interest expenses | 0
Tax Assesments,estimated possible losses including penalties and interest expenses | $ 32,148

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