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Provisions (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Jun. 30, 2022
IfrsStatementLineItems [Line Items]      
Current liabilities $ 849 $ 1,036  
Non-current liabilities 2,700 2,446  
Legal proceedings provision [member]      
IfrsStatementLineItems [Line Items]      
Current liabilities 121 106 $ 108
Non-current liabilities 1,347 1,186 $ 1,125
Employee Postretirement Obligation Provision [Member]      
IfrsStatementLineItems [Line Items]      
Current liabilities 68 66  
Non-current liabilities 1,353 1,260  
Payroll Related Charges And Other Remunerations [Member]      
IfrsStatementLineItems [Line Items]      
Current liabilities $ 660 $ 864