XML 221 R214.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Contingencies and commitments - Summary of aggregate amount of minimum lease payments under non-cancellable operating leases (Parenthetical) (Detail) $ in Millions | Dec. 31, 2016 USD ($)
--- | ---
Disclosure Of Finance Lease And Operating Lease By Lessee [Abstract] |
2016 minimum lease payments amended to exclude contractual obligations which do not qualify as leases | $ 125

X
- References No definition available. + Details
Name: | ifrs-full_DisclosureOfFinanceLeaseAndOperatingLeaseByLesseeAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum lease payments amended to exclude contractual obligations which do not qualify as leases. + References No definition available. + Details
Name: | rio_MinimumLeasePaymentsAmendedToExcludeContractualObligationsWhichDoNotQualifyAsLeases
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant