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Property, plant and equipment - Summary of property, plant and equipment (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance $ 3,596,262 $ 4,003,211
(Write-down) recovery of assets (9,719) (32,499)
Capitalized interest 17,087 0
Ending balance 3,755,559 3,596,262
Land and buildings    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 153,697 156,178
Ending balance 146,343 153,697
Plant and equipment    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 1,227,606 1,294,975
Ending balance 1,224,926 1,227,606
Capital works in progress    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 123,605 109,813
Ending balance 112,543 123,605
Mineral properties    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 1,852,376 1,779,096
Ending balance 2,032,672 1,852,376
Pre-development properties    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 238,978 663,149
Ending balance 239,075 238,978
Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 6,985,213 7,164,602
Additions/transfers 429,505 291,463
(Write-down) recovery of assets (3,183) (38,332)
Other movements/transfers (4,471) 1,705
Assets reclassified as held for sale 217 (425,587)
Disposals (4,554) (8,638)
Capitalized interest 17,087  
Ending balance 7,419,814 6,985,213
Cost | Land and buildings    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 243,332 233,262
Additions/transfers 2,034 7,420
(Write-down) recovery of assets 0 (44)
Other movements/transfers 12,311 4,691
Assets reclassified as held for sale 0 0
Disposals (197) (1,997)
Capitalized interest 0  
Ending balance 257,480 243,332
Cost | Plant and equipment    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 2,623,733 2,568,179
Additions/transfers 43,352 21,901
(Write-down) recovery of assets 0 (37,264)
Other movements/transfers 100,710 77,274
Assets reclassified as held for sale 0 0
Disposals (3,382) (6,357)
Capitalized interest 0  
Ending balance 2,764,413 2,623,733
Cost | Capital works in progress    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 123,605 109,813
Additions/transfers 158,430 181,216
(Write-down) recovery of assets 0 (343)
Other movements/transfers (168,761) (167,081)
Assets reclassified as held for sale 0 0
Disposals (731) 0
Capitalized interest 0  
Ending balance 112,543 123,605
Cost | Mineral properties    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 3,751,842 3,580,743
Additions/transfers 225,664 84,065
(Write-down) recovery of assets (3,183) 225
Other movements/transfers 51,269 86,821
Assets reclassified as held for sale 0 0
Disposals (126) (12)
Capitalized interest 17,087  
Ending balance 4,042,553 3,751,842
Cost | Pre-development properties    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 242,701 672,605
Additions/transfers 25 (3,139)
(Write-down) recovery of assets 0 (906)
Other movements/transfers 0 0
Assets reclassified as held for sale 217 (425,587)
Disposals (118) (272)
Capitalized interest 0  
Ending balance 242,825 242,701
Accumulated depreciation    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance (3,388,951) (3,161,391)
Depreciation for the year (274,288) (250,490)
(Write-down) recovery of assets   12,475
Impairment   (394,723)
Other movements/transfers (3,196) (2,965)
Assets reclassified as held for sale (39) 400,856
Disposals 2,219 7,287
Ending balance (3,664,255) (3,388,951)
Accumulated depreciation | Land and buildings    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance (89,635) (77,084)
Depreciation for the year (21,540) (14,303)
(Write-down) recovery of assets   0
Impairment   0
Other movements/transfers (106) 261
Assets reclassified as held for sale 0 0
Disposals 144 1,491
Ending balance (111,137) (89,635)
Accumulated depreciation | Plant and equipment    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance (1,396,127) (1,273,204)
Depreciation for the year (143,008) (139,188)
(Write-down) recovery of assets   12,475
Impairment   0
Other movements/transfers (2,387) (1,752)
Assets reclassified as held for sale 0 0
Disposals 2,035 5,542
Ending balance (1,539,487) (1,396,127)
Accumulated depreciation | Capital works in progress    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 0 0
Depreciation for the year 0 0
(Write-down) recovery of assets   0
Impairment   0
Other movements/transfers 0 0
Assets reclassified as held for sale 0 0
Disposals 0 0
Ending balance 0 0
Accumulated depreciation | Mineral properties    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance (1,899,466) (1,801,647)
Depreciation for the year (109,740) (96,999)
(Write-down) recovery of assets   0
Impairment   0
Other movements/transfers (676) (820)
Assets reclassified as held for sale 0 0
Disposals 1 0
Ending balance (2,009,881) (1,899,466)
Accumulated depreciation | Pre-development properties    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance (3,723) (9,456)
Depreciation for the year 0 0
(Write-down) recovery of assets   0
Impairment   (394,723)
Other movements/transfers (27) (654)
Assets reclassified as held for sale (39) 400,856
Disposals 39 254
Ending balance $ (3,750) $ (3,723)