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Non-current financial debt (Details 2) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Borrowings $ 22,485 $ 25,523
Not later than one year [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Borrowings 2,241 2,621
Later than one year and not later than two years [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Borrowings 2,147 2,342
Later than two years and not later than three years [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Borrowings 3,281 2,144
Later than three years and not later than four years [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Borrowings 638 3,284
Later than four years and not later than five years [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Borrowings 2,909 693
Later than five years and not later than six years [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Borrowings   2,916
Later than five years [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Borrowings $ 11,269  
Later than six years [member]    
Disclosure of maturity analysis for non-derivative financial liabilities [line items]    
Borrowings   $ 11,523