XML 587 R204.htm IDEA: XBRL DOCUMENT v3.25.0.1

Contingencies and commitments - Additional information (Details) - USD ($) $ in Millions		12 Months Ended
	Mar. 06, 2023	Dec. 31, 2024	Dec. 31, 2023
Disclosure of contingent liabilities [line items]
Contractual capital commitments		$ 1,872.0	$ 1,400.0
Contractually committed decarbonisation capital commitments		114.0	123.0
Borrowings		12,442.0	13,001.0
Notional amount		$ 890.0	1,050.0
Oyu Tolgoi LLC
Disclosure of contingent liabilities [line items]
Proportion of ownership interest in joint venture (%)		66.00%
Oyu Tolgoi LLC | Project Finance Debt
Disclosure of contingent liabilities [line items]
Borrowings		$ 5,500.0	4,700.0
Oyu Tolgoi LLC | Project Finance Debt | External Third Party Lenders
Disclosure of contingent liabilities [line items]
Borrowings		$ 3,900.0	3,900.0
Erdenes Oyu Tolgoi LLC
Disclosure of contingent liabilities [line items]
Proportion of ownership interest in joint venture (%)		34.00%
Larger Than Twenty Five Years
Disclosure of contingent liabilities [line items]
Other commitments		$ 154.0	173.0
Due within 1 year
Disclosure of contingent liabilities [line items]
Other commitments		27.0	10.0
Notional amount		174.0	169.0
Bottom of range
Disclosure of contingent liabilities [line items]
Estimated incremental capital expenditures		5,000.0
Top of range
Disclosure of contingent liabilities [line items]
Estimated incremental capital expenditures		6,000.0
Minera Escondida Ltda
Disclosure of contingent liabilities [line items]
Minera Escondida Limitada undrawn shareholder line of credit Rio Tinto share		$ 225.0	$ 225.0
Proportion of ownership interest in joint venture (%)		30.00%	30.00%
Contingent liabilities related to joint ventures | Rio Tinto Finance (USA) Limited and Rio Tinto Finance (USA) plc
Disclosure of contingent liabilities [line items]
Contractual payments	$ 10.5
Contingent liabilities related to joint ventures | Rio Tinto Finance (USA) Limited and Rio Tinto Finance (USA) plc | Financial guarantee contracts
Disclosure of contingent liabilities [line items]
Amounts guaranteed by parent companies		$ 7,500.0	$ 7,500.0
Contingent liabilities related to joint ventures | Rio Tinto Finance (USA) Limited and Rio Tinto Finance (USA) plc | Bonds | Financial guarantee contracts
Disclosure of contingent liabilities [line items]
Amounts guaranteed by parent companies		6,200.0	6,200.0
Contingent liabilities related to joint ventures | Rio Tinto Finance (USA) Limited and Rio Tinto Finance (USA) plc | Debt securities | Financial guarantee contracts
Disclosure of contingent liabilities [line items]
Amounts guaranteed by parent companies		$ 600.0	$ 1,100.0

X

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

+ Details

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

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

X

- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_NotionalAmount
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Total for all joint ventures [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_17_b_iii&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 16
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b_iii&doctype=Standard
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2024-01-01
-Paragraph 21
-Subparagraph a
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_iv&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_ProportionOfOwnershipInterestInJointVenture
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of undrawn borrowing facilities that may be available for future operating activities and to settle capital commitments. [Refer: Capital commitments]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 50
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_50_a&doctype=Standard
-URIDate 2024-03-27

+ Details

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

X

- Definition

Amounts guaranteed by parent companies.

+ References

No definition available.

+ Details

Name:	rio_AmountsGuaranteedByParentCompanies
Namespace Prefix:	rio_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Contractual Capital Commitments, Decarbonisation Projects

+ References

No definition available.

+ Details

Name:	rio_ContractualCapitalCommitmentsDecarbonisationProjects
Namespace Prefix:	rio_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Contractual payments.

+ References

No definition available.

+ Details

Name:	rio_ContractualPayments
Namespace Prefix:	rio_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Enforceable contractual capital commitments.

+ References

No definition available.

+ Details

Name:	rio_EnforceableContractualCapitalCommitments
Namespace Prefix:	rio_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Estimated Incremental Capital Expenditures, Decarbonisation Projects

+ References

No definition available.

+ Details

Name:	rio_EstimatedIncrementalCapitalExpendituresDecarbonisationProjects
Namespace Prefix:	rio_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Other Commitments

+ References

No definition available.

+ Details

Name:	rio_OtherCommitments
Namespace Prefix:	rio_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=rio_ProjectFinanceDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CounterpartiesAxis=rio_ExternalThirdPartyLendersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	ifrs-full_MaturityAxis=rio_LargerThanTwentyFiveYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

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

X

- Details

Name:	ifrs-full_JointVenturesAxis=rio_MineraEscondidaLimitadaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfContingentLiabilitiesAxis=ifrs-full_ContingentLiabilitiesOfJointVentureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_JointVenturesAxis=rio_RioTintoFinanceUsaLimitedAndRioTintoFinanceUsaPlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=ifrs-full_FinancialGuaranteeContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=rio_BondMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=ifrs-full_DebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: