XML 53 R46.htm IDEA: XBRL DOCUMENT
v3.22.2

Non-controlling interests material to the Group - Additional Information (Details) $ in Billions | Jan. 25, 2022 USD ($)
--- | ---
Equity1 [Abstract] |
Borrowings, amount forgiven | $ 2.4
Interest, amount forgiven | $ 1.0

X
- Definition Borrowings, Amount Forgiven + References No definition available. + Details
Name: | rio_BorrowingsAmountForgiven
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Equity [Abstract] + References No definition available. + Details
Name: | rio_Equity1Abstract
Namespace Prefix: | rio_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Interest Payable, Forgiven + References No definition available. + Details
Name: | rio_InterestPayableForgiven
Namespace Prefix: | rio_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration