XML 542 R159.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Financial instruments and risk management - Summary of financial instruments carried at fair value (Detail) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Disclosure of detailed information about financial instruments [line items] |  |
Cash and cash equivalents | $ 8,495 | $ 9,673
Loans related to equity accounted units | 509 | 0
Held at fair value |  |
Disclosure of detailed information about financial instruments [line items] |  |
Cash and cash equivalents | 8,495 | 9,673
Investments in equity shares and funds | 279 | 181
Other investments, including loans | 609 | 1,277
Trade and other financial receivables | 3,342 | 3,243
Loans related to equity accounted units | 509 | 0
Forward, option and embedded derivatives contracts | 27 | 0
Derivatives related to net debt | 24 | 87
Trade and other financial payables | (6,536) | (6,324)
Derivatives related to net debt | (367) | (516)
Held at fair value | Hedging instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Forward, option and embedded derivatives contracts | (180) | (174)
Held at fair value | Not Designated As Hedging Instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Forward, option and embedded derivatives contracts | 61 | 54
Forward, option and embedded derivatives contracts | (156) | (92)
Held at fair value | Level 1 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Cash and cash equivalents | 4,893 | 2,722
Investments in equity shares and funds | 96 | 85
Other investments, including loans | 230 | 896
Trade and other financial receivables | 15 | 9
Loans related to equity accounted units | 0 | 0
Forward, option and embedded derivatives contracts | 0 | 0
Derivatives related to net debt | 0 | 0
Trade and other financial payables | 0 | 0
Derivatives related to net debt | 0 | 0
Held at fair value | Level 1 | Hedging instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Forward, option and embedded derivatives contracts | 0 | 0
Held at fair value | Level 1 | Not Designated As Hedging Instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Forward, option and embedded derivatives contracts | 0 | 0
Forward, option and embedded derivatives contracts | 0 | 0
Held at fair value | Level 2 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Cash and cash equivalents | 0 | 0
Investments in equity shares and funds | 0 | 0
Other investments, including loans | 0 | 0
Trade and other financial receivables | 1,379 | 1,383
Loans related to equity accounted units | 0 | 0
Forward, option and embedded derivatives contracts | 0 | 0
Derivatives related to net debt | 24 | 87
Trade and other financial payables | (144) | (47)
Derivatives related to net debt | (367) | (516)
Held at fair value | Level 2 | Hedging instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Forward, option and embedded derivatives contracts | 0 | 0
Held at fair value | Level 2 | Not Designated As Hedging Instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Forward, option and embedded derivatives contracts | 42 | 28
Forward, option and embedded derivatives contracts | (48) | (63)
Held at fair value | Level 3 |  |
Disclosure of detailed information about financial instruments [line items] |  |
Cash and cash equivalents | 0 | 0
Investments in equity shares and funds | 183 | 96
Other investments, including loans | 275 | 228
Trade and other financial receivables | 0 | 0
Loans related to equity accounted units | 0 | 0
Forward, option and embedded derivatives contracts | 27 | 0
Derivatives related to net debt | 0 | 0
Trade and other financial payables | 0 | 0
Derivatives related to net debt | 0 | 0
Held at fair value | Level 3 | Hedging instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Forward, option and embedded derivatives contracts | (180) | (174)
Held at fair value | Level 3 | Not Designated As Hedging Instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Forward, option and embedded derivatives contracts | 19 | 26
Forward, option and embedded derivatives contracts | (108) | (29)
Held at amortised cost |  |
Disclosure of detailed information about financial instruments [line items] |  |
Cash and cash equivalents | 3,602 | 6,951
Investments in equity shares and funds | 0 | 0
Other investments, including loans | 104 | 153
Trade and other financial receivables | 1,948 | 1,851
Loans related to equity accounted units | 509 | 0
Forward, option and embedded derivatives contracts | 0 | 0
Derivatives related to net debt | 0 | 0
Trade and other financial payables | (6,392) | (6,277)
Derivatives related to net debt | 0 | 0
Held at amortised cost | Hedging instruments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Forward, option and embedded derivatives contracts | 0 | 0
Held at amortised cost | Not Designated As Hedging Instrument |  |
Disclosure of detailed information about financial instruments [line items] |  |
Forward, option and embedded derivatives contracts | 0 | 0
Forward, option and embedded derivatives contracts | $ 0 | $ 0

X
- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2024-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_45&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph B13 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B13_a&doctype=Appendix&subtype=B -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 54 -Subparagraph i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_i&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_CashAndCashEquivalents
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of financial assets classified as derivative instruments. [Refer: Financial assets; Derivatives [member]] + 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_DerivativeFinancialAssets
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]] + 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_DerivativeFinancialLiabilities
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_DisclosureOfFinancialInstrumentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Derivative Financial Assets Related To Net Debt At Fair Value + References No definition available. + Details
Name: | rio_DerivativeFinancialAssetsRelatedToNetDebtAtFairValue
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Derivative financial liabilities related to net debt at fair value. + References No definition available. + Details
Name: | rio_DerivativeFinancialLiabilitiesRelatedToNetDebtAtFairValue
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Investments In Equity Shares And Funds + References No definition available. + Details
Name: | rio_InvestmentsInEquitySharesAndFunds
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The combined total of current and non-current loans to equity accounted units classified as other financial assets. + References No definition available. + Details
Name: | rio_LoansToEquityAccountedUnits
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Other investments, including loans. + References No definition available. + Details
Name: | rio_OtherInvestmentsIncludingLoans
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Trade and other financial payables. + References No definition available. + Details
Name: | rio_TradeAndOtherFinancialPayables
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Trade and other financial receivables. + References No definition available. + Details
Name: | rio_TradeAndOtherFinancialReceivables
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | ifrs-full_MeasurementAxis=ifrs-full_AtFairValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfHedgesAxis=ifrs-full_HedgingInstrumentsDomain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfHedgesAxis=rio_NotDesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level1OfFairValueHierarchyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level2OfFairValueHierarchyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level3OfFairValueHierarchyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MeasurementAxis=rio_NotHeldAtFairValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |