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Other financial assets and liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Other Financial Assets And Liabilities    
Restricted cash non current $ 13 $ 4
Derivative financial instruments current 53 271
Derivative financial instruments non current 15 544
Investments in equity securities non current 54 45
Total other financial assets - Current 53 271
Total other financial assets non current 82 593
Derivative financial instruments current 197 36
Derivative financial instruments non current 428 95
Other financial liabilities - Related parties - Current 291 290
Other financial liabilities, Liabilities related to the concession grant-Current 467 591
Liabilities related to the concession grant non current 1,887 3,278
Other financial liabilities current 588 759
Other financial liabilities non current 32  
Total other financial liabilities - Current 1,543 1,676
Total other financial liabilities non current $ 2,347 $ 3,373