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Principal joint operations - Additional information (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($)
Disclosure of joint operations [abstract] |
Non-cancellable operating lease commitments not expected to be charged against EBITDA | $ 929

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

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- Definition Noncancellable operating lease commitments not expected to be charged against EBITDA. + References No definition available. + Details
Name: | rio_NoncancellableOperatingLeaseCommitmentsNotExpectedToBeChargedAgainstEBITDA
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration