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Intangible assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
IfrsStatementLineItems [Line Items]      
Balance at January 1, 2021 $ 3,025 $ 14,948  
Cost 4,162 4,087 $ 16,072
Accumulated amortization and impairment (1,176) (1,062) (1,124)
Addition 1,079 271  
Capitalized borrowing costs 11 5  
Write-offs (18) (15)  
Transfers (12) (91)  
Signature Bonuses Transfers (1,177) (11,629)  
Amortization (77) (60)  
Impairment reversal (1) 1  
Translation adjustment 156 (405)  
Balance at December 31, 2021 2,986 3,025  
Service concession rights [member]      
IfrsStatementLineItems [Line Items]      
Balance at January 1, 2021 2,695 14,714  
Cost 2,578 2,744 14,803
Accumulated amortization and impairment (55) (49) (89)
Addition 898 106  
Capitalized borrowing costs  
Write-offs (12) (12)  
Transfers (11) (94)  
Signature Bonuses Transfers (1,177) (11,629)  
Amortization (4) (6)  
Impairment reversal  
Translation adjustment 134 (384)  
Balance at December 31, 2021 2,523 2,695  
Software Licenses [Member]      
IfrsStatementLineItems [Line Items]      
Balance at January 1, 2021 308 210  
Cost 1,560 1,321 1,245
Accumulated amortization and impairment (1,121) (1,013) (1,035)
Addition 181 165  
Capitalized borrowing costs 11 5  
Write-offs (6) (3)  
Transfers (1) 3  
Signature Bonuses Transfers  
Amortization (73) (54)  
Impairment reversal (1) 1  
Translation adjustment 20 (19)  
Balance at December 31, 2021 $ 439 $ 308  
Estimated useful life in years 5 years 5 years  
Goodwill [member]      
IfrsStatementLineItems [Line Items]      
Balance at January 1, 2021 $ 22 $ 24  
Cost 24 22 $ 24
Addition  
Capitalized borrowing costs  
Write-offs  
Transfers  
Signature Bonuses Transfers  
Amortization  
Impairment reversal  
Translation adjustment 2 (2)  
Balance at December 31, 2021 $ 24 $ 22