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Employee benefits (Details 3) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]    
Opening Balance $ 9,374  
Closing Balance 10,675 $ 9,374
Employee benefits [member]    
IfrsStatementLineItems [Line Items]    
Opening Balance 349 900
Effects in the statement of income 16 (11)
Enrollments 18 30
Revision of provisions (2) (41)
Effects in cash and cash equivalents (199) (497)
Terminations in the period (199) (497)
Cumulative translation adjustment 26 (43)
Closing Balance 192 349
Current 75 207
Non-current $ 117 $ 142