v3.26.1
Deferred income tax assets and liabilities and income tax expense - Schedule of temporary difference unused tax losses and unused tax credits (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance $ 60,833    
Profit (loss) 43,951 $ (312,982) $ 132,011
Other comprehensive income (loss) 13 (3,570) 2,298
Ending balance 262,150 60,833  
Net deferred income tax liabilities [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (60,833) (377,385)  
Profit (loss) (43,951) 312,982  
Incorporation through Business Combination (157,353)    
Other comprehensive income (loss) (13) 3,570  
Ending balance (262,150) (60,833) (377,385)
Assets for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance 40,409 13,457  
Profit (loss)   23,382  
Other comprehensive income (loss)   3,570  
Ending balance   40,409 13,457
Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (101,242) (390,842)  
Profit (loss)   289,600  
Ending balance   (101,242) (390,842)
Assets for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance 37,747    
Profit (loss) 17,261    
Incorporation through Business Combination (32,527)    
Other comprehensive income (loss) (13)    
Ending balance 22,468 37,747  
Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (98,580)    
Profit (loss) (61,212)    
Incorporation through Business Combination (124,826)    
Ending balance (284,618) (98,580)  
Tax losses and other unused tax credits [member] | Assets for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance 222 7,932  
Profit (loss)   (7,710)  
Ending balance   222 7,932
Tax losses and other unused tax credits [member] | Assets for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance 222    
Profit (loss) (222)    
Ending balance 0 222  
Employee benefit [member] | Assets for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance 37,525 1,255  
Profit (loss)   32,700  
Other comprehensive income (loss)   3,570  
Ending balance   37,525 1,255
Employee benefit [member] | Assets for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance 37,525    
Profit (loss) (23,444)    
Other comprehensive income (loss) (13)    
Ending balance 14,068 37,525  
Trade and other payables [member] | Assets for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Profit (loss) 40,927    
Incorporation through Business Combination (32,527)    
Ending balance 8,400    
Property, plant and equipment [member] | Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (46,549) (278,724)  
Profit (loss)   232,175  
Ending balance   (46,549) (278,724)
Property, plant and equipment [member] | Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (46,549)    
Profit (loss) (103,902)    
Incorporation through Business Combination (119,193)    
Ending balance (269,644) (46,549)  
Tax inflation adjustments [member] | Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (35,664) (102,239)  
Profit (loss)   66,575  
Ending balance   (35,664) (102,239)
Tax inflation adjustments [member] | Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (35,664)    
Profit (loss) 44,164    
Incorporation through Business Combination (8,500)    
Ending balance 0 (35,664)  
Trade and other receivables [member] | Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (10,782) (11,700)  
Profit (loss)   918  
Ending balance   (10,782) (11,700)
Trade and other receivables [member] | Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (10,782)    
Profit (loss) 7,542    
Ending balance (3,240) (10,782)  
Right-of-use assets, net [member] | Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (4,979) 3,305  
Profit (loss)   (8,284)  
Ending balance   (4,979) 3,305
Right-of-use assets, net [member] | Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (4,979)    
Profit (loss) 1,696    
Ending balance (3,283) (4,979)  
Borrowings [member] | Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (3,050) (968)  
Profit (loss)   (2,082)  
Ending balance   (3,050) (968)
Borrowings [member] | Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (3,050)    
Profit (loss) (3,592)    
Ending balance (6,642) (3,050)  
Provisions [member] | Assets for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance 2,662 4,270  
Profit (loss)   (1,608)  
Ending balance   2,662 4,270
Provisions [member] | Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance 2,662    
Profit (loss) (4,042)    
Incorporation through Business Combination 1,183    
Ending balance (197) 2,662  
Other [member] | Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (218) (516)  
Profit (loss)   298  
Ending balance   (218) $ (516)
Other [member] | Liabilities for deferred income tax [member]      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Beginning balance (218)    
Profit (loss) (3,078)    
Incorporation through Business Combination 1,684    
Ending balance $ (1,612) $ (218)