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Intangible assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the year | $ 834,687 | $ 909,279
Cost, beginning | 2,176,592 | 2,543,799
Accumulated amortization and impairment, beginning | (1,341,905) | (1,634,520)
Additions | 1,994 | 5,748
Disposals and write-offs | (1) | (342)
Amortization | (51,749) | (68,145)
Impairment (loss) reversal of long-lived assets | 83,843 | 9,534
Foreign exchange effect | 10,178 | (22,300)
Effect of new subsidiary acquisition | 7 |
Transfers | (1,031) | 913
Balance at the end of the year | 877,928 | 834,687
Cost, ending | 2,213,991 | 2,176,592
Accumulated amortization and impairment, ending | (1,336,063) | (1,341,905)
Goodwill [member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the year | 305,397 | 307,112
Cost, beginning | 316,087 | 630,787
Accumulated amortization and impairment, beginning | (10,690) | (323,675)
Foreign exchange effect | 811 | (1,715)
Balance at the end of the year | 306,208 | 305,397
Cost, ending | 318,239 | 316,087
Accumulated amortization and impairment, ending | (12,031) | (10,690)
Mining rights [member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the year | 507,491 | 579,551
Cost, beginning | 1,810,609 | 1,859,147
Accumulated amortization and impairment, beginning | (1,303,118) | (1,279,596)
Disposals and write-offs |  | (226)
Amortization | (48,122) | (65,710)
Impairment (loss) reversal of long-lived assets | 83,817 | 9,534
Foreign exchange effect | 6,844 | (15,433)
Transfers | (1,184) | (225)
Balance at the end of the year | 548,846 | 507,491
Cost, ending | 1,844,122 | 1,810,609
Accumulated amortization and impairment, ending | (1,295,276) | (1,303,118)
Other intangible assets [member] |  |
IfrsStatementLineItems [Line Items] |  |
Balance at the beginning of the year | 21,799 | 22,616
Cost, beginning | 49,896 | 53,865
Accumulated amortization and impairment, beginning | (28,097) | (31,249)
Additions | 1,994 | 5,748
Disposals and write-offs | (1) | (116)
Amortization | (3,627) | (2,435)
Impairment (loss) reversal of long-lived assets | 26 |
Foreign exchange effect | 2,523 | (5,152)
Effect of new subsidiary acquisition | 7 |
Transfers | 153 | 1,138
Balance at the end of the year | 22,874 | 21,799
Cost, ending | 51,630 | 49,896
Accumulated amortization and impairment, ending | $ (28,756) | $ (28,097)
Average annual depreciation rates | 5.00% | 5.00%

X
- Definition The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Total for all business combinations [member]; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_i&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The increase (decrease) in intangible assets and goodwill resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -Clause vii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e_vii&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The increase (decrease) in intangible assets and goodwill resulting from transfers. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2024-en-r&anchor=para_118_e&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of intangible assets and goodwill held by the entity. [Refer: Goodwill; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of amortization of intangible assets other than goodwill. [Refer: Depreciation and amortization expense; Intangible assets other than goodwill] + References No definition available. + Details
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- References No definition available. + Details
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- Definition The amount of impairment loss recognised in profit or loss for intangible assets and goodwill. [Refer: Impairment loss recognised in profit or loss; Intangible assets and goodwill] + References No definition available. + Details
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- Definition The effects tof new subsidiary acquisition + References No definition available. + Details
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- Definition The amount of accumulated amortization and impairment. + References No definition available. + Details
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