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Tax situation - Summary of assessments (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses $ 252,412  
Tax Assessments, penalties and interest expenses 468,400  
Total 720,812  
Year 2003 - 2005 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses 8,684  
Tax Assessments, penalties and interest expenses 39,402  
Total 48,086  
Year 2006 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses 10,998  
Tax Assessments, penalties and interest expenses 51,565  
Total 62,563  
Year 2007 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses 11,579  
Tax Assessments, penalties and interest expenses 22,102  
Total 33,681  
Year 2008 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses 16,907  
Tax Assessments, penalties and interest expenses 16,923  
Total 33,830  
Year 2009 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses 56,000  
Tax Assessments, penalties and interest expenses 51,604  
Total 107,604  
Year 2010 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses 53,573  
Tax Assessments, penalties and interest expenses 121,952  
Total 175,525  
Year 2011 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses 40,593  
Tax Assessments, penalties and interest expenses 65,366  
Total 105,959  
Year 2012 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses 869  
Tax Assessments, penalties and interest expenses 6,718  
Total 7,587  
Year 2013 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses 48,063  
Tax Assessments, penalties and interest expenses 65,014  
Total 113,077  
Year 2014 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses 181  
Tax Assessments, penalties and interest expenses 3,208  
Total 3,389  
Year 2015 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses 763  
Tax Assessments, penalties and interest expenses 21,894  
Total 22,657  
Year 2016 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses 4,202  
Tax Assessments, penalties and interest expenses 2,652  
Total $ 6,854  
Sociedad Minera Cerro Verde S.A.A. [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses   $ 252,412
Tax Assessments, penalties and interest expenses   468,400
Total   720,812
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2003 - 2005 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses   8,684
Tax Assessments, penalties and interest expenses   39,402
Total   48,086
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2006 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses   10,998
Tax Assessments, penalties and interest expenses   51,565
Total   62,563
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2007 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses   11,579
Tax Assessments, penalties and interest expenses   22,102
Total   33,681
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2008 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses   16,907
Tax Assessments, penalties and interest expenses   16,923
Total   33,830
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2009 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses   56,000
Tax Assessments, penalties and interest expenses   51,604
Total   107,604
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2010 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses   53,573
Tax Assessments, penalties and interest expenses   121,952
Total   175,525
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2011 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses   40,593
Tax Assessments, penalties and interest expenses   65,366
Total   105,959
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2012 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses   869
Tax Assessments, penalties and interest expenses   6,718
Total   7,587
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2013 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses   48,063
Tax Assessments, penalties and interest expenses   65,014
Total   113,077
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2014 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses   181
Tax Assessments, penalties and interest expenses   3,208
Total   3,389
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2015 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses   763
Tax Assessments, penalties and interest expenses   21,894
Total   22,657
Sociedad Minera Cerro Verde S.A.A. [Member] | Year 2016 [Member]    
Disclosure Of Income Tax Explanatory    
Tax assessments, Estimated possible losses   4,202
Tax Assessments, penalties and interest expenses   2,652
Total   $ 6,854