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Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Mining concessions, development costs, property, plant and equipment, net      
Opening balance $ 1,754,372 $ 1,847,615  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 1,650,361 1,754,372 $ 1,847,615
Final balances 1,650,361 1,754,372 1,847,615
Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 3,781,326 3,727,403  
Additions 109,325 133,070  
Disposals (14,270) (48,153)  
Sales (104,403) (45,772)  
Reclassifications and transfers   (3,750)  
Implementation IFRS 16   18,528  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 3,771,978 3,781,326 3,727,403
Final balances 3,771,978 3,781,326 3,727,403
Accumulated depreciation, amortisation and impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (1,998,596) (1,853,513)  
Additions (199,586) (222,221)  
Disposals 1,595 36,331  
Sales 101,245 40,807  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (2,095,342) (1,998,596) (1,853,513)
Final balances (2,095,342) (1,998,596) (1,853,513)
Accumulated impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (28,358) (26,275)  
Additions 2,083 2,083  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (26,275) (28,358) (26,275)
Final balances (26,275) (28,358) (26,275)
Land | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 17,517 21,761  
Additions 133 630  
Sales   (135)  
Reclassifications and transfers   (4,739)  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 17,650 17,517 21,761
Final balances 17,650 17,517 21,761
Mining concessions [Member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 151,873 151,873  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 151,873 151,873 151,873
Final balances 151,873 151,873 151,873
Mining concessions [Member] | Accumulated depreciation, amortisation and impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (40,259) (40,249)  
Additions (11) (10)  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (40,270) (40,259) (40,249)
Final balances (40,270) (40,259) (40,249)
Development costs [Member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 788,044 743,259  
Additions 33,233 46,047  
Disposals   (443)  
Sales 8,657    
Reclassifications and transfers 612 (819)  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 813,232 788,044 743,259
Final balances 813,232 788,044 743,259
Development costs [Member] | Accumulated depreciation, amortisation and impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (328,517) (298,553)  
Additions (21,139) (29,964)  
Sales 8,657    
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (340,999) (328,517) (298,553)
Final balances (340,999) (328,517) (298,553)
Buildings and other constructions | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 1,359,841 1,342,621  
Additions 99 39  
Disposals (132) (3,559)  
Sales 45,624 (5,380)  
Reclassifications and transfers 28,876 26,120  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 1,343,060 1,359,841 1,342,621
Final balances 1,343,060 1,359,841 1,342,621
Buildings and other constructions | Accumulated depreciation, amortisation and impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (667,319) (591,643)  
Additions (74,719) (83,274)  
Disposals 53 3,391  
Sales 44,096 (3,569)  
Reclassifications and transfers 435 (638)  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (698,324) (667,319) (591,643)
Final balances (698,324) (667,319) (591,643)
Machinery and equipment | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 912,704 958,466  
Additions 4 12  
Disposals (419) (30,235)  
Sales 42,319 (38,322)  
Reclassifications and transfers 13,222 22,783  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 883,192 912,704 958,466
Final balances 883,192 912,704 958,466
Machinery and equipment | Accumulated depreciation, amortisation and impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (667,937) (665,357)  
Additions (60,034) (66,020)  
Disposals 265 28,619  
Sales 40,805 35,459  
Reclassifications and transfers (435) 638  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (686,466) (667,937) (665,357)
Final balances (686,466) (667,937) (665,357)
Transportation units [Member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 8,892 10,885  
Additions   33  
Disposals   (540)  
Sales 577 (1,856)  
Reclassifications and transfers 94 370  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 8,409 8,892 10,885
Final balances 8,409 8,892 10,885
Transportation units [Member] | Accumulated depreciation, amortisation and impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (7,026) (8,599)  
Additions (607) (744)  
Disposals   538  
Sales 550 1,779  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (7,083) (7,026) (8,599)
Final balances (7,083) (7,026) (8,599)
Fixtures and fittings [Member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 12,010 13,306  
Additions 3 2  
Disposals (74) (1,310)  
Sales 408 (1)  
Reclassifications and transfers 206 13  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 11,737 12,010 13,306
Final balances 11,737 12,010 13,306
Fixtures and fittings [Member] | Accumulated depreciation, amortisation and impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (9,604) (10,123)  
Additions (614) (653)  
Disposals 46 1,172  
Sales 348    
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (9,824) (9,604) (10,123)
Final balances (9,824) (9,604) (10,123)
Units in transit [Member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 3,754 2,682  
Disposals (373) (1)  
Reclassifications and transfers   1,073  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 3,381 3,754 2,682
Final balances 3,381 3,754 2,682
Work in Progress [Member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 50,365 56,662  
Additions 27,322 44,319  
Disposals (325) (1,168)  
Sales 30 (78)  
Reclassifications and transfers (42,398) (49,370)  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 34,934 50,365 56,662
Final balances 34,934 50,365 56,662
Stripping activity asset [Member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 154,090 141,726  
Additions 10,752 11,545  
Disposals (11,633)    
Reclassifications and transfers (612) 819  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 152,597 154,090 141,726
Final balances 152,597 154,090 141,726
Stripping activity asset [Member] | Accumulated depreciation, amortisation and impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (88,923) (70,518)  
Additions (22,532) (18,405)  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (111,455) (88,923) (70,518)
Final balances (111,455) (88,923) (70,518)
Right-of-use assets [member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 11,352    
Additions 6,221 3,721  
Disposals (1,314) (10,897)  
Implementation IFRS 16   18,528  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 16,259 11,352  
Final balances 16,259 11,352  
Right-of-use assets [member] | Accumulated depreciation, amortisation and impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (5,167)    
Additions (5,145) 7,778  
Disposals 1,231 2,611  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (9,081) (5,167)  
Final balances (9,081) (5,167)  
Mine closure costs [Member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 310,884 284,162  
Additions 31,558 26,722  
Sales 6,788    
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 335,654 310,884 284,162
Final balances 335,654 310,884 284,162
Mine closure costs [Member] | Accumulated depreciation, amortisation and impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (183,844) (168,471)  
Additions (14,785) (15,373)  
Sales 6,789    
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (191,840) (183,844) (168,471)
Final balances (191,840) (183,844) (168,471)
Mine closure costs [Member] | Accumulated impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (15,290) (13,207)  
Additions 2,083 2,083  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (13,207) (15,290) (13,207)
Final balances (13,207) (15,290) (13,207)
Mine Development Cost [Member] | Accumulated impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (10,153) (10,153)  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (10,153) (10,153) (10,153)
Final balances (10,153) (10,153) (10,153)
Mining Concessions And Development Costs [Member] | Accumulated impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (2,915) (2,915)  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (2,915) (2,915) (2,915)
Final balances (2,915) (2,915) (2,915)
Sociedad Minera Cerro Verde S.A.A. [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 5,690,851 5,602,902  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 5,495,976 5,690,851 5,602,902
Final balances 5,495,976 5,690,851 5,602,902
Sociedad Minera Cerro Verde S.A.A. [Member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 8,753,310 8,166,652  
Additions 294,846 529,708  
Disposals (15,146) (36,886)  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 9,026,755 8,753,310 8,166,652
Final balances 9,026,755 8,753,310 8,166,652
Sociedad Minera Cerro Verde S.A.A. [Member] | Gross carrying amount [Member] | IFRS 16 [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions     95,728
Sociedad Minera Cerro Verde S.A.A. [Member] | Land | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 24,905 24,663  
Additions 0 0  
Disposals 0 (80)  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 24,905 24,905 24,663
Final balances 24,905 24,905 24,663
Sociedad Minera Cerro Verde S.A.A. [Member] | Land | Gross carrying amount [Member] | IFRS 16 [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions     0
Sociedad Minera Cerro Verde S.A.A. [Member] | Machinery and equipment | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 4,854,613 4,694,050  
Additions 0 0  
Disposals (12,814) (30,482)  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 4,985,749 4,854,613 4,694,050
Final balances 4,985,749 4,854,613 4,694,050
Sociedad Minera Cerro Verde S.A.A. [Member] | Machinery and equipment | Gross carrying amount [Member] | IFRS 16 [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions     0
Sociedad Minera Cerro Verde S.A.A. [Member] | Transportation units [Member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 26,365 23,251  
Additions 0 0  
Disposals 0 (32)  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 30,098 26,365 23,251
Final balances 30,098 26,365 23,251
Sociedad Minera Cerro Verde S.A.A. [Member] | Transportation units [Member] | Gross carrying amount [Member] | IFRS 16 [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions     0
Sociedad Minera Cerro Verde S.A.A. [Member] | Fixtures and fittings [Member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 949 949  
Additions 0 0  
Disposals 0 0  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 949 949 949
Final balances 949 949 949
Sociedad Minera Cerro Verde S.A.A. [Member] | Fixtures and fittings [Member] | Gross carrying amount [Member] | IFRS 16 [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions     0
Sociedad Minera Cerro Verde S.A.A. [Member] | Work in Progress [Member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 158,068 185,928  
Additions 161,059 271,364  
Disposals 0 0  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 118,430 158,068 185,928
Final balances 118,430 158,068 185,928
Sociedad Minera Cerro Verde S.A.A. [Member] | Work in Progress [Member] | Gross carrying amount [Member] | IFRS 16 [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions     0
Sociedad Minera Cerro Verde S.A.A. [Member] | Mine Maintenance Truck Shop [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions 13,400 78,200  
Additions for capitalization of interest 1,400    
Sociedad Minera Cerro Verde S.A.A. [Member] | Haul Trucks [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions 24,600 47,100  
Sociedad Minera Cerro Verde S.A.A. [Member] | Stators For Ball Mills [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions 7,000 18,300  
Additions for capitalization of interest 200    
Sociedad Minera Cerro Verde S.A.A. [Member] | Tailing Drain Expansion [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions   15,200  
Sociedad Minera Cerro Verde S.A.A. [Member] | Concentrator Optimization Project [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions   12,300  
Sociedad Minera Cerro Verde S.A.A. [Member] | Regrowth Of Leach Pad [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions   10,900  
Sociedad Minera Cerro Verde S.A.A. [Member] | Staged Flotation Reactor Engineering Project [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions   6,200  
Sociedad Minera Cerro Verde S.A.A. [Member] | New shovel and rebuild of another shovel      
Mining concessions, development costs, property, plant and equipment, net      
Additions 37,900    
Sociedad Minera Cerro Verde S.A.A. [Member] | Projects associated with the capitalization of main components of the mine heavy equipment      
Mining concessions, development costs, property, plant and equipment, net      
Additions 17,600    
Sociedad Minera Cerro Verde S.A.A. [Member] | Projects for the optimization of the Company's operating processes      
Mining concessions, development costs, property, plant and equipment, net      
Additions 14,800    
Sociedad Minera Cerro Verde S.A.A. [Member] | Rollers [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions 11,000    
Sociedad Minera Cerro Verde S.A.A. [Member] | Tailing dam projects related to drain expansion and jacking header extension      
Mining concessions, development costs, property, plant and equipment, net      
Additions 10,400    
Additions for capitalization of interest 400    
Sociedad Minera Cerro Verde S.A.A. [Member] | Other projects      
Mining concessions, development costs, property, plant and equipment, net      
Additions for capitalization of interest 500    
Sociedad Minera Cerro Verde S.A.A. [Member] | Stripping activity asset [Member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 852,747 655,709  
Additions 92,890 197,038  
Disposals 0 0  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 945,637 852,747 655,709
Final balances 945,637 852,747 655,709
Sociedad Minera Cerro Verde S.A.A. [Member] | Stripping activity asset [Member] | Gross carrying amount [Member] | IFRS 16 [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions     0
Sociedad Minera Cerro Verde S.A.A. [Member] | Right-of-use assets [member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 95,441    
Additions 3,328 1,342  
Disposals (2,318) (929)  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 96,451 95,441  
Final balances 96,451 95,441  
Sociedad Minera Cerro Verde S.A.A. [Member] | Right-of-use assets [member] | Gross carrying amount [Member] | IFRS 16 [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions     95,728
Sociedad Minera Cerro Verde S.A.A. [Member] | Right-of-use assets [member] | Accumulated depreciation, amortisation and impairment [member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance (10,585)    
Additions (11,320) 11,488  
Disposals 2,316 903  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net (19,589) (10,585)  
Final balances (19,589) (10,585)  
Sociedad Minera Cerro Verde S.A.A. [Member] | Other property, plant and equipment [Member] | Gross carrying amount [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Opening balance 25,100 25,491  
Additions 0 0  
Disposals 0 (594)  
Mining concessions, development costs, right-of-use asset, property, plant and equipment, net 30,965 25,100 25,491
Final balances $ 30,965 $ 25,100 25,491
Sociedad Minera Cerro Verde S.A.A. [Member] | Other property, plant and equipment [Member] | Gross carrying amount [Member] | IFRS 16 [Member]      
Mining concessions, development costs, property, plant and equipment, net      
Additions     $ 0