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Other current assets (Tables)
 12 Months Ended
Dec. 31, 2020
Other current assets [abstract]  
Other current assets
(USD millions)
2020
2019
VAT receivable
544
508
Withholding tax recoverable
73
108
Prepaid expenses
943
898
Receivables from associated companies
1
Other receivables and current assets
963
1 165
Total other current assets
2 523
2 680