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Other financial assets and liabilities (Details 1) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]    
Other Provision, beginning $ 2,970  
Revision to estimates and new provisions 774  
Monetary and present value adjustments 443  
Disbursements (318)  
Other Provision, ending 3,869  
Current liabilities 591 $ 416
Non-current liabilities 3,278 2,554
Liabilities 3,869 $ 2,970
Payment Obligation [Member]    
IfrsStatementLineItems [Line Items]    
Other Provision, beginning 954  
Revision to estimates and new provisions 55  
Monetary and present value adjustments 176  
Disbursements (55)  
Other Provision, ending $ 1,130  
Discount rate in nominal terms 11.04% 11.04%
Remaining term of obligations 34 years  
Liabilities $ 1,130 $ 954
Infrastructure Investment [Member]    
IfrsStatementLineItems [Line Items]    
Other Provision, beginning 2,016  
Revision to estimates and new provisions 719  
Monetary and present value adjustments 267  
Disbursements (263)  
Other Provision, ending $ 2,739  
Remaining term of obligations 8 years  
Liabilities $ 2,739 $ 2,016
Infrastructure Investment [Member] | Bottom of range [member]    
IfrsStatementLineItems [Line Items]    
Discount rate in nominal terms 5.17% 6.08%
Infrastructure Investment [Member] | Top of range [member]    
IfrsStatementLineItems [Line Items]    
Discount rate in nominal terms 5.54% 6.23%