XML 581 R198.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Share capital - Rio Tinto plc - Additional information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
– Rio Tinto plc |  |  |
Disclosure of classes of share capital [line items] |  |  |
Shares held in the employee share ownership trusts on behalf of Rio Tinto plc (in shares) | 229,749 | 253,371 | 232,621
Shares and ADRs |  |  |
Disclosure of classes of share capital [line items] |  |  |
Value of shares purchased by employee share ownership trusts | $ 13 | $ 17 | $ 16
ADRs | – Rio Tinto plc |  |  |
Disclosure of classes of share capital [line items] |  |  |
American depository receipts in entity held in employee share ownership trust (in shares) | 48,990 | 45,694 | 49,777

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

X
- Definition American depository reciepts in entity held in employee share ownership trust. + References No definition available. + Details
Name: | rio_AmericanDepositoryReceiptsInEntityHeldInEmployeeShareOwnershipTrust
Namespace Prefix: | rio_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | rio_SharesInEntityHeldInEmployeeShareOwnershipTrust
Namespace Prefix: | rio_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Value of shares purchased by employee share ownership trusts. + References No definition available. + Details
Name: | rio_ValueOfSharesPurchasedByEmployeeShareOwnershipTrusts
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=rio_ShareOfRioTintoPlcAndAmericanDepositoryReceiptsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_ClassesOfFinancialInstrumentsAxis=rio_AmericanDepositoryReceiptsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |