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Investments in equity accounted units | 12 Months Ended
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Dec. 31, 2018
Disclosure Of Investments Accounted For Using Equity Method Explanatory [Abstract] |
Investments in equity accounted units | 15 Investments in equity accounted units
|  | 2018 |  |  | 2017 |
Summary balance sheet (Rio Tinto share) | US$m |  | US$m |
Rio Tinto's share of assets |  |  |  |  |  |
– Non-current assets |  | 6,000 |  |  | 5,913 |
– Current assets |  | 887 |  |  | 990 |
|  | 6,887 |  |  | 6,903 |
Rio Tinto's share of liabilities |  |  |  |  |  |
– Current liabilities |  | (607 | ) |  | (654 | )
– Non-current liabilities |  | (1,981 | ) |  | (1,763 | )
|  | (2,588 | ) |  | (2,417 | )
Rio Tinto's share of net assets |  | 4,299 |  |  | 4,486 |
Further details of investments in equity accounted units are set out in notes 35 and 36. At 31 December 2018 and 2017, the Group had no investments in equity accounted units with shares listed on recognised stock exchanges. At 31 December 2018, net debt of equity accounted units, excluding amounts due to Rio Tinto, was US$1,158 million (2017: US$1,244 million).

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- Definition The disclosure of investments accounted for using the equity method. [Refer: Investments accounted for using equity method] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_10_e&doctype=Standard -URIDate 2017-03-09 + Details
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