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Other current assets (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Other current assets [abstract]    
VAT Receivable $ 509 $ 487
Withholding tax recoverable 50 58
Prepaid expenses - third party 911 1,102
Contingent consideration receivable 43  
Other receivables and current assets 958 793
Total other current assets $ 2,471 $ 2,440