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Group balance sheet (Parenthetical) shares in Millions | 6 Months Ended
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Jun. 30, 2023 shares
Rio Tinto Plc |
Statements [Line Items] |
Weighted average number of ordinary shares outstanding (in shares) | 1,255.9
Rio Tinto Limited |
Statements [Line Items] |
Weighted average number of ordinary shares outstanding (in shares) | 371.2

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- Definition The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 33 -IssueDate 2023-01-01 -Paragraph 70 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=33&code=ifrs-tx-2023-en-r&anchor=para_70_b&doctype=Standard -URIDate 2023-03-23 + Details
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Balance Type: | na
Period Type: | duration

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- Definition Statements line items. + References No definition available. + Details
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Namespace Prefix: | rio_
Data Type: | xbrli:stringItemType
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Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |