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Estimated contingent liabilities for which the possibility of loss is classified as possible are set out in the following table: (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]    
Total $ 44,505 $ 38,869
Tax contingent liability [member]    
IfrsStatementLineItems [Line Items]    
Total 28,376 24,785
Labor related contingent liability [member]    
IfrsStatementLineItems [Line Items]    
Total 8,066 7,172
Civil related contingent liability [member]    
IfrsStatementLineItems [Line Items]    
Total 6,710 5,720
Civil related environmental contingent liability [member]    
IfrsStatementLineItems [Line Items]    
Total $ 1,353 $ 1,192