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Schedule of changes in credit losses provision (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Trade and other receivables [abstract]    
Opening balance $ 1,448 $ 1,596
Additions 72 42
Write-offs (21)
Reversals (38) (75)
Cumulative translation adjustment 51 30
Closing balance 1,512 1,593
Current 190 199
Non-current $ 1,322 $ 1,394