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Other financial assets and liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Other Financial Assets And Liabilities    
Other financial assets, Restricted cash - Non-Current $ 4 $ 77
Other financial assets, Derivative financial instruments- Current 271 342
Other financial assets, Derivative financial instruments- Non-Current 544 196
Other financial assets, Investments in equity securities - Non- Current 45 7
Total other financial assets - Current 271 342
Total other financial assets - Non-Current 593 280
Other financial liabilities, Derivative financial instruments - Current 36 90
Other financial liabilities, Derivative financial instruments - Non-Current 95 186
Other financial liabilities - Related parties - Current 290 400
Other financial liabilities, Financial guarantees provided - Non-Current   103
Other financial liabilities, Liabilities related to the concession grant - Current 591 416
Other financial liabilities, Liabilities related to the concession grant - Non-Current 3,278 2,554
Other financial liabilities, Contract liability and other advances - Current 759 766
Total other financial liabilities - Current 1,676 1,672
Total other financial liabilities - Non-Current $ 3,373 $ 2,843