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Other disclosures (Tables) | 6 Months Ended
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Jun. 30, 2018
Other Disclosures [Abstract] |
Summary of transactions and balances with equity accounted units | Details of the Group's principal equity accounted units are given in the 2017 Annual report.
|  | Six months |  | Six months
|  | to 30 June |  | to 30 June
|  | 2018 |  | 2017
Income statement items |  | US$m |  | US$m
Purchases from equity accounted units |  | (551) |  | (569)
Sales to equity accounted units |  | 310 |  | 134
Cash flow statement items |  |  |  |
Dividends from equity accounted units |  | 418 |  | 169
Net funding of equity accounted units |  | (3) |  | (2)
|  | 30 June |  | 31 December
|  | 2018 |  | 2017
Balance sheet items |  | US$m |  | US$m
Investments in equity accounted units(a) |  | 4,512 |  | 4,486
Loans to equity accounted units |  | 37 |  | 39
Loans from equity accounted units |  | (25) |  | (31)
Trade and other receivables: amounts due from equity accounted units |  | 315 |  | 299
Trade and other payables: amounts due to equity accounted units |  | (176) |  | (175)
| (a) | Investments in equity accounted units include quasi equity loans.

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- Definition The disclosure of transactions between the entity and its related parties. [Refer: Related parties [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2017-01-01 -Paragraph 18 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2017-03-01&anchor=para_18&doctype=Standard -URIDate 2017-03-09 + Details
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