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v3.25.2

Events after the balance sheet date (Details) - Joint ventures where entity is venturer | Jul. 23, 2025
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Rio Tinto Plc |
Entity Information [Line Items] |
Proportion of ownership interest in joint operation | 51.00%
Empresa Nacional de Minería (ENAMI) |
Entity Information [Line Items] |
Proportion of ownership interest in joint operation | 49.00%

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | dei_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The proportion of ownership interest in a joint operation attributable to the entity. [Refer: Total for all joint operations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2025-01-01 -Paragraph 21 -Subparagraph a -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_21_a_iv&doctype=Standard -URIDate 2025-03-27 + Details
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Balance Type: | na
Period Type: | duration

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

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

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- Details
Name: | dei_LegalEntityAxis=rio_EmpresaNacionalDeMineriaENAMIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |