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Other reserves	12 Months Ended
	Dec. 31, 2017
Rio Tinto plc [member]
Disclosure Of Reserves Within Equity [Line Items]
Other reserves	F Other reserves Other reserves include US$11,936 million (2016: US$11,936 million) which represents the difference between the nominal value and issue price of the shares issued arising from Rio Tinto plc’s rights issue completed in July 2009.

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- Definition

The disclosure of reserves within equity. [Refer: Other reserves [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2016-01-13
-Paragraph 79
-Subparagraph b
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-URIDate 2016-03-31

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

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