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Employee benefits (Details Narrative) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
IfrsStatementLineItems [Line Items]      
Payment relating to the PPP provisioned $ 557    
Provision relating to PPP 270 $ 247  
Payment relating to the PRL provisioned 134    
Provision relating to PLR 67 65  
Temination benefits $ 11,745   $ 11,688
Description of installments As of June 30, 2023, from the balance of US$ 167, US$ 30 refers to the second installment of 565 retired employees and US$137 refers to 1,225 employees enrolled in voluntary severance programs with expected termination by September 2025.    
P P 1 [Member]      
IfrsStatementLineItems [Line Items]      
Post-employment benefit expense, defined contribution plans $ 451 1,689  
Financial commitment 1,339    
P P 2 [Member]      
IfrsStatementLineItems [Line Items]      
Post-employment benefit expense, defined contribution plans $ 102 $ 1