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Financial structure and financial costs - Credit risk (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Credit risk      
Maximum credit risk exposure $ 102,990 $ 94,548 $ 70,664
Net margin call (paid) received (2,857) (7,299) 1,556
Sale of receivables      
Credit risk      
Net value of receivables sold 8,681    
Financial asset remaining recognized after date of sale 0    
Financial liability remaining recognized after date of sale 0    
Reverse factoring      
Credit risk      
Net value of receivables sold 491    
Loans to equity affiliates      
Credit risk      
Maximum credit risk exposure 3,733 4,532 5,129
Loans and advances      
Credit risk      
Maximum credit risk exposure 1,837 2,107 2,458
Other non-current financial assets related to operational activities      
Credit risk      
Maximum credit risk exposure 250 312 287
Non-current financial assets      
Credit risk      
Maximum credit risk exposure 2,731 2,404 4,781
Accounts receivable      
Credit risk      
Maximum credit risk exposure 24,378 21,983 14,068
Other operating receivables      
Credit risk      
Maximum credit risk exposure 28,289 29,553 8,043
Current financial assets      
Credit risk      
Maximum credit risk exposure 8,746 12,315 4,630
Cash and cash equivalents      
Credit risk      
Maximum credit risk exposure $ 33,026 $ 21,342 $ 31,268