XML 284 R277.htm IDEA: XBRL DOCUMENT v3.8.0.1

Trade and other payables - Additional information (Detail) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Trade And Other Payables [Line Items]
Trade and other payables	$ 7,917	$ 7,150
Rio Tinto plc [member] | LIBOR [Member]
Disclosure Of Trade And Other Payables [Line Items]
Trade and other payables	$ 12,265	$ 12,079

X

- Definition

The amount of trade payables and other payables. [Refer: Trade payables; Other payables]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2016-01-13
-Paragraph 54
-Subparagraph k
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_54_k&doctype=Standard
-URIDate 2016-03-31

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Disclosure of trade and other payables.

+ References

No definition available.

+ Details

Name:	rio_DisclosureOfTradeAndOtherPayablesLineItems
Namespace Prefix:	rio_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=rio_RioTintoPlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=rio_LondonInterbankOfferedRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: