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Related-party transactions (Tables)
 12 Months Ended
Dec. 31, 2021
Related party transactions [abstract]  
Summary of transactions and balances with equity accounted units


Note
2021
US$m
2020
US$m
2019
US$m
Income statement items
Purchases from equity accounted units
(1,167)(960)(1,155)
Sales to equity accounted units
432 271 268 

Cash flow statement items
Dividends from equity accounted units
1,431 594 669 
Net receipts/(funding) from/of equity accounted units6 (43)(33)

Balance sheet items
Investments in equity accounted units(a)
153,504 3,764 3,971 
Loans to equity accounted units
19— 41 39 
Trade and other receivables: amounts due from equity accounted units(b)
18251 251 259 
Trade and other payables: amounts due to equity accounted units
24(253)(241)(271)
(a)Investments in equity accounted units include quasi equity loans. Further information about investments in equity accounted units is set out in notes 34 and 35.
(b)This includes prepayments of tolling charges.