XML 56 R48.htm IDEA: XBRL DOCUMENT
v3.21.2

Segmental information - Narrative (Details) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Disclosure of operating segments [line items] |  |
Percentage of capital expenditure | 100.00% |
Percentage of depreciation and amortisation | 100.00% |
Capitalised depreciation | $ 54 | $ 118
Net foreign exchange loss | 4 | 170
Net foreign exchange gain | 351 | 21
Subsidiaries |  |
Disclosure of operating segments [line items] |  |
Share of sales revenue of equity accounted units | 22 | (15)
Gross product sales |  |
Disclosure of operating segments [line items] |  |
Share of sales revenue of equity accounted units | $ 1,567 | $ 986

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfOperatingSegmentsLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net gain arising from foreign exchange differences. [Refer: Foreign exchange gain (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 21 -IssueDate 2020-01-01 -Paragraph 52 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=21&code=ifrs-tx-2020-en-r&anchor=para_52_a&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_NetForeignExchangeGain
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The net loss arising from foreign exchange differences. [Refer: Foreign exchange gain (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 21 -IssueDate 2020-01-01 -Paragraph 52 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=21&code=ifrs-tx-2020-en-r&anchor=para_52_a&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_NetForeignExchangeLoss
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Depreciation Expense Capitalised + References No definition available. + Details
Name: | rio_DepreciationExpenseCapitalised
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of capital expenditure. + References No definition available. + Details
Name: | rio_PercentageOfCapitalExpenditure
Namespace Prefix: | rio_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of depreciation and amortisation. + References No definition available. + Details
Name: | rio_PercentageOfDepreciationAndAmortisation
Namespace Prefix: | rio_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of subsidiary sales to equity accounted units. + References No definition available. + Details
Name: | rio_ShareOfSalesRevenueOfEquityAccountedUnits
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=ifrs-full_SubsidiariesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SegmentsAxis=rio_GrossProductSalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |