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Our capital and liquidity - Summary of capital and liquidity risk management (Detail) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of detailed information about hedging instruments [Line Items]        
Equity attributable to owners of Rio Tinto (see Group balance sheet) $ 54,586 $ 50,634 [1]   $ 47,570
Equity attributable to non-controlling interests (see Group balance sheet) 1,755 2,107 [1]    
Net debt 4,231 4,188 $ (1,576)  
Capital and liquidity risk management        
Disclosure of detailed information about hedging instruments [Line Items]        
Equity attributable to owners of Rio Tinto (see Group balance sheet) 54,586 50,175    
Equity attributable to non-controlling interests (see Group balance sheet) 1,755 2,099    
Net debt 4,231 4,188    
Total capital $ 60,572 $ 56,462    
[1] Comparative information has been restated to reflect the adoption of narrow-scope amendments to IAS 12. Refer to page 166 for details.