v3.26.1
Property, plant, equipment and development costs - Net cost (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Mining concessions, development costs, property, plant and equipment, net    
Opening balance $ 1,889,785 $ 1,600,295
Final balances 2,314,432 1,889,785
Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 5,580,816 5,528,663
Final balances 5,755,547 5,580,816
Gross carrying amount [Member]    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 4,604,469 4,165,696
Additions 496,152 378,238
Sales and disposals (65,160) (9,030)
Sales (9,865) (11,367)
Transfer/Other changes 0 0
Final balances 5,094,206 4,604,469
Gross carrying amount [Member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 10,980,559 10,428,554
Additions 839,221 672,770
Adjustments and reclassifications (8,409) (36,885)
Sales and disposals (53,306) (83,880)
Transfer/Other changes 0 0
Final balances 11,758,065 10,980,559
Accumulated depreciation, amortisation and impairment [member]    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 2,703,955 2,558,856
Additions 135,172 157,416
Sales and disposals (63,318) (979)
Sales 9,022 11,338
Transfer/Other changes 0 0
Final balances 2,769,045 2,703,955
Accumulated depreciation, amortisation and impairment [member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 5,399,743 4,899,891
Additions 651,696 583,004
Adjustments and reclassifications 0 0
Sales and disposals (48,921) (83,152)
Transfer/Other changes 0 0
Final balances 6,002,518 5,399,743
Buildings and constructions [Member] | Gross carrying amount [Member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 2,681,209 2,673,262
Additions 0 0
Adjustments and reclassifications 538 716
Sales and disposals (7,501) (3,901)
Transfer/Other changes 15,932 11,132
Final balances 2,690,178 2,681,209
Buildings and constructions [Member] | Accumulated depreciation, amortisation and impairment [member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 729,902 658,105
Additions 73,940 75,268
Adjustments and reclassifications 183 418
Sales and disposals (4,365) (3,889)
Transfer/Other changes 0 0
Final balances 799,660 729,902
Transportation units | Gross carrying amount [Member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 45,775 40,632
Additions 0 0
Adjustments and reclassifications 0 0
Sales and disposals (3,719) (306)
Transfer/Other changes 1,583 5,449
Final balances 43,639 45,775
Transportation units | Accumulated depreciation, amortisation and impairment [member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 26,079 23,181
Additions 3,396 3,159
Adjustments and reclassifications 0 0
Sales and disposals (3,166) (261)
Transfer/Other changes 0 0
Final balances 26,309 26,079
Machinery and equipment | Gross carrying amount [Member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 5,490,062 5,342,285
Additions 0 0
Adjustments and reclassifications (780) (716)
Sales and disposals (16,981) (77,827)
Transfer/Other changes 250,865 226,320
Final balances 5,723,166 5,490,062
Machinery and equipment | Accumulated depreciation, amortisation and impairment [member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 3,247,485 3,031,301
Additions 298,541 293,826
Adjustments and reclassifications (183) (418)
Sales and disposals (16,312) (77,224)
Transfer/Other changes 261 0
Final balances 3,529,792 3,247,485
Land | Gross carrying amount [Member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 33,562 33,562
Additions 0 0
Adjustments and reclassifications 0 0
Sales and disposals 0 0
Transfer/Other changes 1,782 0
Final balances 35,344 33,562
Fixtures and fittings | Gross carrying amount [Member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 572 572
Additions 0 0
Adjustments and reclassifications 0 0
Sales and disposals 0 0
Transfer/Other changes 0 0
Final balances 572 572
Fixtures and fittings | Accumulated depreciation, amortisation and impairment [member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 572 572
Additions 0 0
Adjustments and reclassifications 0 0
Sales and disposals 0 0
Transfer/Other changes 0 0
Final balances 572 572
Other equipment | Gross carrying amount [Member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 36,241 36,404
Additions 0 0
Adjustments and reclassifications 0 0
Sales and disposals (14,624) (436)
Transfer/Other changes 35 273
Final balances 21,652 36,241
Other equipment | Accumulated depreciation, amortisation and impairment [member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 32,938 30,286
Additions 2,195 3,088
Adjustments and reclassifications 0 0
Sales and disposals (14,624) (436)
Transfer/Other changes 0 0
Final balances 20,509 32,938
Work in Progress [Member] | Gross carrying amount [Member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 300,578 185,068
Additions 373,171 358,684
Adjustments and reclassifications 0 0
Sales and disposals 0 0
Transfer/Other changes (266,944) (243,174)
Final balances 406,805 300,578
Right-of-use assets [member] | Gross carrying amount [Member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 99,847 99,779
Additions 84,435 1,478
Adjustments and reclassifications 0 0
Sales and disposals (10,481) (1,410)
Transfer/Other changes (3,253) 0
Final balances 170,548 99,847
Right-of-use assets [member] | Accumulated depreciation, amortisation and impairment [member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 59,541 49,731
Additions 14,202 11,152
Adjustments and reclassifications 0 0
Sales and disposals (10,454) (1,342)
Transfer/Other changes (261) 0
Final balances 63,028 59,541
Stripping activity asset [Member] | Gross carrying amount [Member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 2,120,689 1,808,081
Additions 381,615 312,608
Adjustments and reclassifications 0 0
Sales and disposals 0 0
Transfer/Other changes 0 0
Final balances 2,502,304 2,120,689
Stripping activity asset [Member] | Accumulated depreciation, amortisation and impairment [member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 1,250,637 1,059,567
Additions 255,247 191,070
Adjustments and reclassifications 0 0
Sales and disposals 0 0
Transfer/Other changes 0 0
Final balances 1,505,884 1,250,637
Asset retirement costs [Member] | Gross carrying amount [Member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 172,024 208,909
Additions 0 0
Adjustments and reclassifications (8,167) (36,885)
Sales and disposals 0 0
Transfer/Other changes 0 0
Final balances 163,857 172,024
Asset retirement costs [Member] | Accumulated depreciation, amortisation and impairment [member] | Sociedad Minera Cerro Verde S.A.A.    
Mining concessions, development costs, property, plant and equipment, net    
Opening balance 52,589 47,148
Additions 4,175 5,441
Adjustments and reclassifications 0 0
Sales and disposals 0 0
Transfer/Other changes 0 0
Final balances $ 56,764 $ 52,589