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Employee benefits (Details 3) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
IfrsStatementLineItems [Line Items]    
Opening Balance $ 10,675  
Translation adjustment 21 $ (30)
Closing Balance 11,976  
Employee Benefits [Member]    
IfrsStatementLineItems [Line Items]    
Opening Balance 192 349
Effects in the statement of income (6) 4
Enrollments 4 4
Revision of provisions (10)
Effects in cash and cash equivalents (33) (155)
Terminations in the period (33) (155)
Translation adjustment 14 26
Closing Balance 167 224
Current 70 123
Non-current $ 97 $ 101