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Intangible assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]      
Balance at January 1, 2023 $ 3,042 $ 2,986  
Cost 3,433 4,405 $ 4,162
Accumulated amortization and impairment (1,178) (1,363) (1,176)
Addition 225 348  
Capitalized borrowing costs 12 13  
Write-offs (20) (41)  
Transfers 7 (9)  
Signature Bonuses Transfers (3)   (16)  
Amortization (134) (104)  
Impairment recognition (note 25) (224) (364)
Translation adjustment (653) 229  
Balance at December 31, 2023 2,255 3,042 2,986
Service concession rights [member]      
IfrsStatementLineItems [Line Items]      
Balance at January 1, 2023 2,425 2,523  
Cost 1,750 2,489 2,578
Accumulated amortization and impairment (53) (64) (55)
Addition 24 148  
Capitalized borrowing costs  
Write-offs (18) (41)  
Transfers (11)  
Signature Bonuses Transfers (3)   (16)  
Amortization (4) (4)  
Impairment recognition (note 25) (224) (364)  
Translation adjustment (506) 190  
Balance at December 31, 2023 $ 1,697 $ 2,425 2,523
Estimated useful life in years 2 years 2 years  
Software Licenses [Member]      
IfrsStatementLineItems [Line Items]      
Balance at January 1, 2023 $ 592 $ 439  
Cost 1,663 1,891 1,560
Accumulated amortization and impairment (1,125) (1,299) (1,121)
Addition 201 200  
Capitalized borrowing costs 12 13  
Write-offs (2)  
Transfers 7 2  
Signature Bonuses Transfers (3)    
Amortization (130) (100)  
Impairment recognition (note 25)  
Translation adjustment (142) 38  
Balance at December 31, 2023 $ 538 $ 592 439
Estimated useful life in years 5 years 5 years  
Goodwill [member]      
IfrsStatementLineItems [Line Items]      
Balance at January 1, 2023 $ 25 $ 24  
Cost 20 25 24
Addition  
Capitalized borrowing costs  
Write-offs  
Transfers  
Signature Bonuses Transfers (3)    
Amortization  
Impairment recognition (note 25)  
Translation adjustment (5) 1  
Balance at December 31, 2023 $ 20 $ 25 $ 24