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Finance debt (Details Narrative) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2022
Dec. 31, 2021
DisclosureFinanceDebtLineItems [Line Items]    
Description of repaid financial debt The balance in global notes has maturities between 2024 to 2115 and does not require collateral. Such financing was carried out in dollars, euros and pounds, 87%, 2% and 11%, of the total global notes, respectively.  
Repayment of financial debt $ 6,393  
Repurchase and withdraw global bonds 3,986  
Level 1 of fair value hierarchy [member] | United States of America, Dollars    
DisclosureFinanceDebtLineItems [Line Items]    
Fair value measurement, liabilities 14,402 $ 20,770
Level 2 of fair value hierarchy [member] | United States of America, Dollars    
DisclosureFinanceDebtLineItems [Line Items]    
Fair value measurement, liabilities $ 16,179 $ 17,121