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Financial risk management (Details 3) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
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IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | $ 4,474,808 | $ 3,966,630
Not later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 1,287,478 | 1,017,482
Later than one year and not later than three years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 598,415 | 270,682
Later than three years and not later than five years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 586,527 | 1,245,465
Later than five years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 2,002,388 | 1,433,001
Loans And Financing [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 2,646,190 | 2,501,684
Loans And Financing [Member] | Not later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 153,014 | 148,077
Loans And Financing [Member] | Later than one year and not later than three years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 478,025 | 150,023
Loans And Financing [Member] | Later than three years and not later than five years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 433,708 | 1,175,144
Loans And Financing [Member] | Later than five years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 1,581,443 | 1,028,440
Lease liabilities [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 141,988 | 86,057
Lease liabilities [member] | Not later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 54,233 | 29,882
Lease liabilities [member] | Later than one year and not later than three years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 60,421 | 37,755
Lease liabilities [member] | Later than three years and not later than five years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 9,980 | 6,121
Lease liabilities [member] | Later than five years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 17,354 | 12,299
Derivatives [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 32,337 | 3,798
Derivatives [member] | Not later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 11,646 | 3,600
Derivatives [member] | Later than one year and not later than three years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 91 | 181
Derivatives [member] | Later than three years and not later than five years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 20,600 | 17
Trade Payables [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 500,025 | 443,288
Trade Payables [Member] | Not later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 500,025 | 443,288
Trade Payables [Member] | Later than one year and not later than three years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows |  |
Confirming Payable [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 415,388 | 268,175
Confirming Payable [Member] | Not later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 415,388 | 268,175
Salaries And Payroll Charges [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 83,597 | 70,234
Salaries And Payroll Charges [Member] | Not later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 83,597 | 70,234
Dividends Payable [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 26,918 | 3,707
Dividends Payable [Member] | Not later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 26,918 | 3,707
Total for all related parties [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 4,695 | 4,085
Total for all related parties [member] | Not later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows |  | 1,125
Total for all related parties [member] | Later than one year and not later than three years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 4,695 | 2,960
Provision for decommissioning, restoration and rehabilitation costs [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 585,306 | 549,154
Provision for decommissioning, restoration and rehabilitation costs [member] | Not later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 39,326 | 47,937
Provision for decommissioning, restoration and rehabilitation costs [member] | Later than one year and not later than three years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 51,641 | 76,583
Provision for decommissioning, restoration and rehabilitation costs [member] | Later than three years and not later than five years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 118,247 | 60,598
Provision for decommissioning, restoration and rehabilitation costs [member] | Later than five years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 376,092 | 364,036
Service Concession Arrangements [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 38,364 | 36,448
Service Concession Arrangements [Member] | Not later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 3,331 | 1,457
Service Concession Arrangements [Member] | Later than one year and not later than three years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 3,542 | 3,180
Service Concession Arrangements [Member] | Later than three years and not later than five years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | 3,992 | 3,585
Service Concession Arrangements [Member] | Later than five years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Non-derivative financial liabilities, undiscounted cash flows | $ 27,499 | $ 28,226

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