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Intangible assets (Details) - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Dec. 31, 2021
IfrsStatementLineItems [Line Items]        
Balance at December 31, 2022 $ 3,042 $ 2,986    
Cost 3,927 4,705 $ 4,405 $ 4,162
Accumulated amortization and impairment (1,239) (1,318) (1,363) (1,176)
Addition 102 232    
Capitalized borrowing costs 4 6    
Write-offs   (35)    
Transfers 4 1    
Signature Bonuses Transfers (3)   (6)    
Amortization (67) (48)    
Translation adjustment (397) 251    
Balance at June 30, 2023 2,688 3,387    
Service concession rights [member]        
IfrsStatementLineItems [Line Items]        
Balance at December 31, 2022 2,425 2,523    
Cost 2,169 2,900 2,489 2,578
Accumulated amortization and impairment (57) (62) (64) (55)
Addition 1 148    
Capitalized borrowing costs    
Write-offs   (35)    
Transfers    
Signature Bonuses Transfers (3)   (6)    
Amortization (2) (2)    
Translation adjustment (312) 210    
Balance at June 30, 2023 $ 2,112 $ 2,838    
Estimated useful life in years 2 years 2 years    
Software Licenses [Member]        
IfrsStatementLineItems [Line Items]        
Balance at December 31, 2022 $ 592 $ 439    
Cost 1,736 1,779 1,891 1,560
Accumulated amortization and impairment (1,182) (1,256) (1,299) (1,121)
Addition 101 84    
Capitalized borrowing costs 4 6    
Write-offs      
Transfers 4 1    
Signature Bonuses Transfers (3)      
Amortization (65) (46)    
Translation adjustment (82) 39    
Balance at June 30, 2023 $ 554 $ 523    
Estimated useful life in years 5 years 5 years    
Goodwill [member]        
IfrsStatementLineItems [Line Items]        
Balance at December 31, 2022 $ 25 $ 24    
Cost 22 26 $ 25 $ 24
Addition    
Capitalized borrowing costs    
Write-offs      
Transfers    
Signature Bonuses Transfers (3)      
Amortization    
Translation adjustment (3) 2    
Balance at June 30, 2023 $ 22 $ 26