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Directors’ and key management personnel remuneration - Additional information (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 USD ($) director | Dec. 31, 2023 USD ($) director | Dec. 31, 2022 USD ($) director
Disclosure Of Directors And Key Management Remuneration [Line Items] |  |  |
Aggregate remuneration, including pension contributions | $ 17,141 | $ 16,227 | $ 11,427
Aggregate pension contribution to defined contribution plans | 186 | 155 | 174
Other employment costs | 2,316 | 1,321 | 1,173
– Rio Tinto plc |  |  |
Disclosure Of Directors And Key Management Remuneration [Line Items] |  |  |
Aggregate remuneration, including pension contributions | 16,185 | 15,184 | 10,692
Aggregate pension contribution to defined contribution plans | 26 | 20 | 10
– Rio Tinto Limited |  |  |
Disclosure Of Directors And Key Management Remuneration [Line Items] |  |  |
Aggregate remuneration, including pension contributions | 956 | 1,043 | 735
Aggregate pension contribution to defined contribution plans | $ 0 | $ 0 | $ 0
Defined Benefit Plan |  |  |
Disclosure Of Directors And Key Management Remuneration [Line Items] |  |  |
Number of directors accrued retirement benefits under defined contribution arrangements | director | 0 | 0 | 0
Defined Contribution Plans |  |  |
Disclosure Of Directors And Key Management Remuneration [Line Items] |  |  |
Number of directors accrued retirement benefits under defined contribution arrangements | director | 2 | 2 | 2

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- Definition The amount of compensation to key management personnel in the form of post-employment benefits. [Refer: Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2024-01-01 -Paragraph 17 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2024-en-r&anchor=para_17_b&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The number of participants in a retirement benefit plan receiving benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2024-01-01 -Paragraph 36 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2024-en-r&anchor=para_36_b&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of employee expenses that the entity does not separately disclose in the same statement or note. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 5 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_5&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition Key management personnel compensation including pension contributions and other retirement benefits. + References No definition available. + Details
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- Details
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