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Disclosure of information on segments (Details 4) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers $ 1,174,137 $ 1,275,594 $ 1,067,045
Commercial Deductions In Revenue From Contract With Customers 1,325,616 1,479,097 1,258,338
Revenue From Contract With Customers Net 1,129,751 1,225,158 1,013,924
Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   266,482 242,824
Commercial Deductions In Revenue From Contract With Customers 299,286 321,011 289,101
Revenue From Contract With Customers Net 257,840 266,482 242,824
Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   256,957 243,795
Commercial Deductions In Revenue From Contract With Customers 154,114 258,102 244,462
Revenue From Contract With Customers Net 153,240 256,957 243,795
Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   41,120 55,401
Commercial Deductions In Revenue From Contract With Customers 37,460 45,236 60,916
Revenue From Contract With Customers Net 33,864 41,120 55,401
Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   36,685 46,561
Commercial Deductions In Revenue From Contract With Customers 19,980 43,473 59,765
Revenue From Contract With Customers Net 16,799 36,685 46,561
Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   118,376  
Commercial Deductions In Revenue From Contract With Customers 229,948 120,730  
Revenue From Contract With Customers Net 225,339 118,376  
Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   333,097 226,381
Commercial Deductions In Revenue From Contract With Customers 481,535 517,841 404,826
Revenue From Contract With Customers Net 339,581 333,097 226,381
La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   163,995 180,063
Commercial Deductions In Revenue From Contract With Customers 96,941 164,923 183,226
Revenue From Contract With Customers Net 96,600 163,995 180,063
Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   10,603 12,633
Commercial Deductions In Revenue From Contract With Customers   0 0
Revenue From Contract With Customers Net   0 0
Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   60,639 57,312
Commercial Deductions In Revenue From Contract With Customers 0 0 0
Revenue From Contract With Customers Net 0 0 0
Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   14,377 12,675
Commercial Deductions In Revenue From Contract With Customers 0 0 0
Revenue From Contract With Customers Net 0 0 0
Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   20,739 24,339
Commercial Deductions In Revenue From Contract With Customers 0 0 0
Revenue From Contract With Customers Net 0 0 0
Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   615 615
Commercial Deductions In Revenue From Contract With Customers 0 0 0
Revenue From Contract With Customers Net 0 0 0
Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   25,975 25,489
Commercial Deductions In Revenue From Contract With Customers 6,655 6,317 5,982
Revenue From Contract With Customers Net 6,655 6,317 5,982
Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   34,016 191,657
Commercial Deductions In Revenue From Contract With Customers 0 34,132 191,837
Revenue From Contract With Customers Net 0 34,016 191,657
Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   (108,082) (252,700)
Commercial Deductions In Revenue From Contract With Customers (303) (32,668) (181,777)
Revenue From Contract With Customers Net (167) (31,887) (178,740)
Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   1,383,676 1,319,745
Commercial Deductions In Revenue From Contract With Customers 1,325,919 1,511,765 1,440,115
Revenue From Contract With Customers Net 1,129,918 1,257,045 1,192,664
Metal and concentrates sales [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 1,129,751 1,225,158 1,013,924
Metal and concentrates sales [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 257,840 266,482 242,824
Metal and concentrates sales [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 153,240 256,957 243,795
Metal and concentrates sales [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 33,864 41,120 55,401
Metal and concentrates sales [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 16,799 36,685 46,561
Metal and concentrates sales [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 225,339 118,376  
Metal and concentrates sales [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 339,581 333,097 226,381
Metal and concentrates sales [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 96,600 163,995 180,063
Metal and concentrates sales [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0 0
Metal and concentrates sales [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 6,655 6,317 5,982
Metal and concentrates sales [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 34,016 191,657
Metal and concentrates sales [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (167) (31,887) (178,740)
Metal and concentrates sales [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 1,129,918 1,257,045 1,192,664
Metal and concentrates sales [Member] | Peru [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 537,816 551,243 396,733
Metal and concentrates sales [Member] | Peru [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 170,986 209,300 194,647
Metal and concentrates sales [Member] | Peru [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 10,808 17,774 14,463
Metal and concentrates sales [Member] | Peru [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 15,261 13,049 13,243
Metal and concentrates sales [Member] | Peru [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 16,799 35,189 44,671
Metal and concentrates sales [Member] | Peru [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 63,049 34,337  
Metal and concentrates sales [Member] | Peru [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 257,559 239,317 125,628
Metal and concentrates sales [Member] | Peru [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 2,770 32,607 180,063
Metal and concentrates sales [Member] | Peru [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0 0
Metal and concentrates sales [Member] | Peru [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Peru [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Peru [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Peru [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Peru [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 751 852 497
Metal and concentrates sales [Member] | Peru [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 705 2,261
Metal and concentrates sales [Member] | Peru [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (167) (31,887) (178,740)
Metal and concentrates sales [Member] | Peru [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 537,983 583,130 575,473
Metal and concentrates sales [Member] | America [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 370,624 471,863 397,795
Metal and concentrates sales [Member] | America [member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | America [member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 142,432 239,183 229,332
Metal and concentrates sales [Member] | America [member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | America [member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | America [member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 159,530 84,039  
Metal and concentrates sales [Member] | America [member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 459 2,191
Metal and concentrates sales [Member] | America [member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 67,756 125,875 0
Metal and concentrates sales [Member] | America [member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0 0
Metal and concentrates sales [Member] | America [member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | America [member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | America [member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | America [member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | America [member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 906 3,776 5,485
Metal and concentrates sales [Member] | America [member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 18,531 160,787
Metal and concentrates sales [Member] | America [member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | America [member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 370,624 471,863 397,795
Metal and concentrates sales [Member] | Asias [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 120,519 120,719 97,467
Metal and concentrates sales [Member] | Asias [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 29,382 19,078 798
Metal and concentrates sales [Member] | Asias [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Asias [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 9,115 12,140 17,943
Metal and concentrates sales [Member] | Asias [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Asias [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Metal and concentrates sales [Member] | Asias [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 82,022 89,501 78,726
Metal and concentrates sales [Member] | Asias [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Asias [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0 0
Metal and concentrates sales [Member] | Asias [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Asias [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Asias [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Asias [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Asias [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Asias [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Asias [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Asias [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 120,519 120,719 97,467
Metal and concentrates sales [Member] | Europes [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 100,792 81,333 121,929
Metal and concentrates sales [Member] | Europes [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 57,472 38,104 47,379
Metal and concentrates sales [Member] | Europes [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Europes [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 9,488 15,931 24,215
Metal and concentrates sales [Member] | Europes [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 1,496 1,890
Metal and concentrates sales [Member] | Europes [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 2,760 0  
Metal and concentrates sales [Member] | Europes [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 3,820 19,836
Metal and concentrates sales [Member] | Europes [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 26,074 5,513 0
Metal and concentrates sales [Member] | Europes [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0 0
Metal and concentrates sales [Member] | Europes [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Europes [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Europes [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Europes [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Europes [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 4,998 1,689 0
Metal and concentrates sales [Member] | Europes [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 14,780 28,609
Metal and concentrates sales [Member] | Europes [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Metal and concentrates sales [Member] | Europes [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 100,792 81,333 121,929
Services [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 24,001 29,697 28,782
Services [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Services [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   10,603 12,633
Services [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 62,962 60,639 57,312
Services [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 14,986 14,377 12,675
Services [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 615 615 615
Services [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 19,909 19,658 19,507
Services [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (74,471) (76,195) (73,960)
Services [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 98,472 105,892 102,742
Services [Member] | Peru [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 23,712 14,903 28,782
Services [Member] | Peru [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Peru [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Peru [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Peru [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Peru [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Services [Member] | Peru [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Peru [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Peru [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   10,014 12,633
Services [Member] | Peru [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 62,962 60,639 57,312
Services [Member] | Peru [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 14,787 14,205 12,675
Services [Member] | Peru [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Peru [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 615 615 615
Services [Member] | Peru [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 19,909 19,658 19,507
Services [Member] | Peru [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Services [Member] | Peru [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (74,561) (90,228) (73,960)
Services [Member] | Peru [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 98,273 105,131 102,742
Services [Member] | America [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 289 14,794  
Services [Member] | America [member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Services [Member] | America [member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Services [Member] | America [member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Services [Member] | America [member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Services [Member] | America [member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Services [Member] | America [member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Services [Member] | America [member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Services [Member] | America [member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   589  
Services [Member] | America [member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Services [Member] | America [member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 199 172  
Services [Member] | America [member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Services [Member] | America [member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Services [Member] | America [member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Services [Member] | America [member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Services [Member] | America [member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 90 14,033  
Services [Member] | America [member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 199 761  
Royalties [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 1,174,137 1,275,594 1,067,045
Royalties [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 257,840 266,482 242,824
Royalties [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 153,240 256,957 243,795
Royalties [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 33,864 41,120 55,401
Royalties [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 16,799 36,685 46,561
Royalties [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 225,339 118,376  
Royalties [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 339,581 333,097 226,381
Royalties [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 96,600 163,995 180,063
Royalties [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   10,603 12,633
Royalties [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 62,962 60,639 57,312
Royalties [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 14,986 14,377 12,675
Royalties [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 20,385 20,739 24,339
Royalties [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 615 615 615
Royalties [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 26,564 25,975 25,489
Royalties [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 34,016 191,657
Royalties [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (74,638) (108,082) 252,700
Royalties [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 1,248,775 1,383,676 1,319,745
Royalties [Member] | Peru [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 20,385 20,739 24,339
Royalties [Member] | Peru [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties [Member] | Peru [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties [Member] | Peru [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties [Member] | Peru [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties [Member] | Peru [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Royalties [Member] | Peru [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties [Member] | Peru [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties [Member] | Peru [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0 0
Royalties [Member] | Peru [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties [Member] | Peru [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties [Member] | Peru [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 20,385 20,739 24,339
Royalties [Member] | Peru [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties [Member] | Peru [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties [Member] | Peru [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties [Member] | Peru [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties [Member] | Peru [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 20,385 20,739 24,339
Gold (per ounce) [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 411,926 511,434 440,603
Gold (per ounce) [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 11 345 347
Gold (per ounce) [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 149,092 247,909 232,940
Gold (per ounce) [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 28 0 42
Gold (per ounce) [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 49 452 1,374
Gold (per ounce) [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 150,939 80,796  
Gold (per ounce) [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 18,463 20,301 16,463
Gold (per ounce) [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 93,358 160,489 179,362
Gold (per ounce) [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0 0
Gold (per ounce) [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Gold (per ounce) [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Gold (per ounce) [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Gold (per ounce) [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Gold (per ounce) [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Gold (per ounce) [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 32,875 188,120
Gold (per ounce) [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (14) (31,733) (178,045)
Gold (per ounce) [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 411,940 543,167 618,648
Silver [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 369,167 409,775 385,989
Silver [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 217,843 256,608 260,431
Silver [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 5,243 9,595 11,279
Silver [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 35,307 40,384 55,502
Silver [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 7,045 16,518 25,368
Silver [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 54,109 27,285  
Silver [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 46,060 54,629 29,560
Silver [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 3,583 4,434 3,864
Silver [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0 0
Silver [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Silver [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Silver [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Silver [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Silver [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Silver [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 1,257 3,717
Silver [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (23) (935) (3,732)
Silver [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 369,190 410,710 389,721
Copper [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 274,761 268,527 224,649
Copper [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Copper [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (221) 598 243
Copper [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 129 192 230
Copper [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Copper [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Copper [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 275,119 267,737 224,176
Copper [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Copper [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0 0
Copper [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Copper [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Copper [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Copper [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Copper [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Copper [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Copper [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (266) 0 0
Copper [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 275,027 268,527 224,649
Zinc [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 174,048 188,023 142,425
Zinc [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 45,194 31,814 12,042
Zinc [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Zinc [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Zinc [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 9,382 17,505 19,767
Zinc [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 18,197 7,914  
Zinc [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 101,275 130,790 110,616
Zinc [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Zinc [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0 0
Zinc [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Zinc [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Zinc [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Zinc [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Zinc [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Zinc [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Zinc [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Zinc [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 174,048 188,023 142,425
Lead [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 89,059 94,955 58,690
Lead [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 36,238 32,244 16,281
Lead [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Lead [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 1,996 4,660 5,142
Lead [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 3,504 8,998 13,256
Lead [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 6,703 4,735  
Lead [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 40,618 44,318 24,011
Lead [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Lead [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0 0
Lead [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Lead [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Lead [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Lead [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Lead [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Lead [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Lead [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Lead [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 89,059 94,955 58,690
Manganese sulfate [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 6,655 6,317 5,982
Manganese sulfate [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Manganese sulfate [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Manganese sulfate [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Manganese sulfate [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Manganese sulfate [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Manganese sulfate [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Manganese sulfate [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Manganese sulfate [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0 0
Manganese sulfate [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Manganese sulfate [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Manganese sulfate [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Manganese sulfate [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Manganese sulfate [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 6,655 6,317 5,982
Manganese sulfate [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Manganese sulfate [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Manganese sulfate [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 6,655 6,317 5,982
Indium [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   66  
Indium [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   66  
Indium [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0  
Indium [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0  
Indium [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0  
Indium [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0  
Indium [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0  
Indium [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0  
Indium [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0  
Indium [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0  
Indium [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0  
Indium [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   66  
Commercial deductions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (195,865) (253,939) (244,414)
Commercial deductions [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (41,446) (54,529) (46,277)
Commercial deductions [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (874) (1,145) (667)
Commercial deductions [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (3,596) (4,116) (5,515)
Commercial deductions [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (3,181) (6,788) (13,204)
Commercial deductions [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (4,609) (2,354)  
Commercial deductions [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (141,954) (184,744) (178,445)
Commercial deductions [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (341) (928) (3,163)
Commercial deductions [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0 0
Commercial deductions [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Commercial deductions [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Commercial deductions [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Commercial deductions [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Commercial deductions [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Commercial deductions [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 (116) (180)
Commercial deductions [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 136 781 3,037
Commercial deductions [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (196,001) (254,720) (247,451)
Sales by services [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 24,001 29,697 28,782
Sales by services [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Sales by services [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Sales by services [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Sales by services [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Sales by services [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Sales by services [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Sales by services [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Sales by services [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   10,603 12,633
Sales by services [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 62,962 60,639 57,312
Sales by services [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 14,986 14,377 12,675
Sales by services [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Sales by services [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 615 615 615
Sales by services [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 19,909 19,658 19,507
Sales by services [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Sales by services [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers (74,471) (76,195) (73,960)
Sales by services [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 98,472 105,892 102,742
Royalties income [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 20,385 20,739 24,339
Royalties income [Member] | Ucchuchacua [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties income [Member] | Orcopampa [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties income [Member] | Julcani [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties income [Member] | Mallay [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties income [Member] | Tambomayo [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0  
Royalties income [Member] | Colquijirca [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties income [Member] | La Zanja [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties income [Member] | Construction and engineering [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers   0 0
Royalties income [Member] | Energy generation and transmission [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties income [Member] | Insurance brokerage [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties income [Member] | Rental of mining concessions [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 20,385 20,739 24,339
Royalties income [Member] | Holding of investment in shares [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties income [Member] | Industrial activities [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties income [Member] | Corporates [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties income [Member] | Adjustments and eliminations [Member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers 0 0 0
Royalties income [Member] | Reportable segments [member]      
Disclosure of information on segments [Line Items]      
Revenue from contracts with customers $ 20,385 $ 20,739 $ 24,339