v3.26.1
Property, plant, equipment and development costs - Carrying amounts of right-of-use assets recognized (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of Mining concessions, development costs, property, plant and equipment, net [Line Items]    
Opening Balance $ 6,572  
Addition 2,400 $ 1,900
Ending Balance 6,829 6,572
Sociedad Minera Cerro Verde S.A.A.    
Disclosure of Mining concessions, development costs, property, plant and equipment, net [Line Items]    
Opening Balance 40,306 50,048
Ending Balance 107,520 40,306
Sociedad Minera Cerro Verde S.A.A. | Gross carrying amount [Member]    
Disclosure of Mining concessions, development costs, property, plant and equipment, net [Line Items]    
Opening Balance 99,847 99,779
Addition 84,435 1,478
Disposals and or/sales (10,481) (1,410)
Transfers (3,253)  
Ending Balance 170,548 99,847
Sociedad Minera Cerro Verde S.A.A. | Gross carrying amount [Member] | Land    
Disclosure of Mining concessions, development costs, property, plant and equipment, net [Line Items]    
Opening Balance 10,550 10,491
Addition 16,891 59
Disposals and or/sales (9,851) 0
Transfers 0  
Ending Balance 17,590 10,550
Sociedad Minera Cerro Verde S.A.A. | Gross carrying amount [Member] | Buildings and other constructions    
Disclosure of Mining concessions, development costs, property, plant and equipment, net [Line Items]    
Opening Balance 58,081 58,213
Addition 302 741
Disposals and or/sales (630) (873)
Transfers 0  
Ending Balance 57,753 58,081
Sociedad Minera Cerro Verde S.A.A. | Gross carrying amount [Member] | Machinery and equipment    
Disclosure of Mining concessions, development costs, property, plant and equipment, net [Line Items]    
Opening Balance 31,216 31,075
Addition 67,242 678
Disposals and or/sales 0 (537)
Transfers (3,253)  
Ending Balance 95,205 31,216
Sociedad Minera Cerro Verde S.A.A. | Accumulated depreciation, amortisation and impairment [member]    
Disclosure of Mining concessions, development costs, property, plant and equipment, net [Line Items]    
Opening Balance (59,541) (49,731)
Addition 14,202 11,152
Disposals and or/sales (10,454) (1,342)
Transfers (261)  
Ending Balance (63,028) (59,541)
Sociedad Minera Cerro Verde S.A.A. | Accumulated depreciation, amortisation and impairment [member] | Land    
Disclosure of Mining concessions, development costs, property, plant and equipment, net [Line Items]    
Opening Balance (9,547) (7,874)
Addition 1,609 1,673
Disposals and or/sales (9,851) 0
Transfers 0  
Ending Balance (1,305) (9,547)
Sociedad Minera Cerro Verde S.A.A. | Accumulated depreciation, amortisation and impairment [member] | Buildings and other constructions    
Disclosure of Mining concessions, development costs, property, plant and equipment, net [Line Items]    
Opening Balance (32,770) (27,364)
Addition 6,037 6,210
Disposals and or/sales (603) (804)
Transfers 0  
Ending Balance (38,204) (32,770)
Sociedad Minera Cerro Verde S.A.A. | Accumulated depreciation, amortisation and impairment [member] | Machinery and equipment    
Disclosure of Mining concessions, development costs, property, plant and equipment, net [Line Items]    
Opening Balance (17,224) (14,493)
Addition 6,556 3,269
Disposals and or/sales 0 (538)
Transfers (261)  
Ending Balance $ (23,519) $ (17,224)