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Non-current financial debt (Details 4) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Disclosure of fair value measurement of liabilities [line items]    
Straight bonds $ 22,341 $ 25,296
Total 22,485 25,523
Balance sheet    
Disclosure of fair value measurement of liabilities [line items]    
Straight bonds 22,341 25,296
Others 144 227
Total 22,485 25,523
Fair values    
Disclosure of fair value measurement of liabilities [line items]    
Straight bonds 20,277 27,079
Others 144 227
Total $ 20,421 $ 27,306