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Financial instruments - Summary of changes in fair value of Level 3 financial assets and financial liabilities (Detail) $ in Millions | 6 Months Ended
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Jun. 30, 2022 USD ($)
Disclosure of detailed information about financial instruments [line items] |
Currency translation adjustments | $ (587)
Level 3 |
Disclosure of detailed information about financial instruments [line items] |
Opening balance | 177
Currency translation adjustments | (8)
Total realised gains/(losses) included in consolidated sales revenue | 11
Total realised gains/(losses) included in net operating costs | (31)
Total unrealised gains included in net operating costs | 32
Total unrealised losses transferred into other comprehensive income through cash flow hedges | (60)
Additions to financial instruments | 36
Disposals/maturity of financial instruments | 29
Closing balance | 186
Net gains included in the income statement for assets and liabilities held at period end | $ 20

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- Definition The increase in the fair value measurement of assets resulting from purchases of those assets. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 13 -IssueDate 2021-01-01 -Paragraph 93 -Subparagraph e -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2021-en-r&anchor=para_93_e_iii&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition Disposal or maturity of financial instruments. + References No definition available. + Details
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- Definition Financial assets and financial liabilities at fair value. + References No definition available. + Details
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Balance Type: | debit
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- Definition Gains (losses) recognised in profit or loss for assets and liabilities held. + References No definition available. + Details
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Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Total realised gains or losses related to Level 3 financial assets and liabilities included in consolidated sales revenue. + References No definition available. + Details
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- Definition Total realised gains or losses related to Level 3 financial assets and liabilities included in net operating costs. + References No definition available. + Details
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Namespace Prefix: | rio_
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Period Type: | duration

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- Definition Unrealised gain or loss transferred into other comprehensive income. + References No definition available. + Details
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- Definition Total unrealised gains related to Level 3 financial assets and liabilities included in net operating costs. + References No definition available. + Details
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- Details
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