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Assets and liabilities held for sale	12 Months Ended
	Dec. 31, 2017
Noncurrent Assets Or Disposal Groups Classified As Held For Sale Or As Held For Distribution To Owners [Abstract]
Assets and liabilities held for sale	19 Assets and liabilities held for sale As at 31 December 2017, assets and liabilities held for sale includes Rio Tinto's interest in the Dunkerque aluminium smelter (US$355 million) and certain other separate assets. At 31 December 2016, assets and liabilities held for sale included Blair Athol and certain other separate assets.

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- Definition

The disclosure of non-current assets or disposal groups classified as held for sale. [Refer: Non-current assets or disposal groups classified as held for sale]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2016-01-13
-Paragraph 10
-Subparagraph e
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-URIDate 2016-03-31

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- References

No definition available.

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