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Other disclosures - (Tables)
 6 Months Ended
Jun. 30, 2019
Other Disclosures [Abstract]  
Summary of transactions and balances with equity accounted units
Income statement items
Six months
to 30 June 2019
US$m

Six months
to 30 June 2018
US$m

Purchases from equity accounted units
(529
)
(551
)
Sales to equity accounted units
141

310






Cash flow statement items




Dividends from equity accounted units
318

418

Net funding of equity accounted units
(12
)
(3
)
Balance sheet items
30 June 2019
US$m

31 December 2018
US$m

Investments in equity accounted units(a)
4,216

4,299

Loans to equity accounted units
40

38

Trade and other receivables: amounts due from equity accounted units
267

278

Trade and other payables: amounts due to equity accounted units
(223
)
(223
)
(a)
Investments in equity accounted units include quasi equity loans.