Name:	ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The amount of liabilities arising from share-based payment transactions. Share-based payment transactions are transactions in which the entity: (a) receives goods or services from the supplier of those goods or services (including an employee) in a share-based payment arrangement; or (b) incurs an obligation to settle the transaction with the supplier in a share-based payment arrangement when another group entity receives those goods or services. [Refer: Share-based payment arrangements [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2023-01-01
-Paragraph 51
-Subparagraph b
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_51_b_i&doctype=Standard
-URIDate 2023-03-23

Name:	ifrs-full_LiabilitiesFromSharebasedPaymentTransactions2011
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Number of shares cash-settled awards outstanding in share-based payment arrangement.

No definition available.

Name:	rio_NumberOfSharesCashsettledAwardsOutstandingInSharebasedPaymentArrangement
Namespace Prefix:	rio_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Percentage Of Bonus Deferral

No definition available.

Name:	rio_PercentageOfBonusDeferral
Namespace Prefix:	rio_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

Percentage of cancellations employees electing to withdraw their investment shares before vesting.

No definition available.

Name:	rio_PercentageOfCancellationsEmployeesElectingToWithdrawTheirInvestmentSharesBeforeVesting
Namespace Prefix:	rio_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

Percentage Of Cancellations Employees Electing To Withdraw Their Investment Shares Before Vesting, Per Annum

No definition available.

Name:	rio_PercentageOfCancellationsEmployeesElectingToWithdrawTheirInvestmentSharesBeforeVestingPerAnnum
Namespace Prefix:	rio_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Percentage of forfeitures, prior to vesting, on outstanding awards.

No definition available.

Name:	rio_PercentageOfForfeituresPriorToVestingOnOutstandingAwards
Namespace Prefix:	rio_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

Percentage of share-based payment charge for plan.

No definition available.

Name:	rio_PercentageOfSharebasedPaymentChargeForPlan
Namespace Prefix:	rio_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

Name:	dei_LegalEntityAxis=rio_RioTintoLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=rio_PerformanceSharePlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=rio_ManagementSharePlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=rio_BonusDeferralPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=rio_ExecutiveDirectorsAndProductGroupExecutivesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=rio_GlobalEmployeeSharePlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: