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Acquisitions - Additional information (Detail) - Rincon $ in Millions | Mar. 29, 2022 USD ($)
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Disclosure Of Acquisitions And Disposals [Line Items] |
Consideration transferred | $ 825
Goodwill | 0
Exploration and evaluation assets |
Disclosure Of Acquisitions And Disposals [Line Items] |
Consideration transferred | $ 822

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- Definition Consideration Transferred, Asset Acquisition + References No definition available. + Details
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Period Type: | instant

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- Definition Disclosure of acquisitions and disposals. + References No definition available. + Details
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- Definition Goodwill Recognized, Asset Acquisition + References No definition available. + Details
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Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Balance Type: |
Period Type: |