XML 72 R65.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Share of profit after tax of equity accounted units (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Disclosure Of Detailed Information About Share Of Profit After Tax Of Equity Accounted Units [Abstract] |
Summary of share of profit after tax of equity accounted units |
|  | 2017 |  |  | 2016 |  |  | 2015 |
| US$m |  | US$m |  | US$m |
Sales revenue: Rio Tinto share (a) |  | 1,960 |  |  | 1,727 |  |  | 2,149 |
Operating costs |  | (1,400 | ) |  | (1,237 | ) |  | (1,609 | )
Profit before finance items and taxation |  | 560 |  |  | 490 |  |  | 540 |
Finance items |  | (47 | ) |  | (33 | ) |  | (37 | )
Share of profit after tax of equity accounted units |  | 17 |  |  | 20 |  |  | 35 |
Profit before taxation |  | 530 |  |  | 477 |  |  | 538 |
Taxation |  | (191 | ) |  | (156 | ) |  | (177 | )
Profit for the year (Rio Tinto share) |  | 339 |  |  | 321 |  |  | 361 |
(a) | Sales revenue of equity accounted units includes sales by equity accounted units to Group subsidiaries.

X
- Definition Detailed information about share of profit after tax of equity accounted units. + References No definition available. + Details
Name: | rio_DisclosureOfDetailedInformationAboutShareOfProfitAfterTaxOfEquityAccountedUnitsAbstract
Namespace Prefix: | rio_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of detailed information about share of profit after tax of equity accounted units. + References No definition available. + Details
Name: | rio_DisclosureOfDetailedInformationAboutShareOfProfitAfterTaxOfEquityAccountedUnitsExplanatory
Namespace Prefix: | rio_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration