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Our capital and liquidity - Summary of capital and liquidity risk management (Detail) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of detailed information about hedging instruments [Line Items]      
Equity attributable to owners of Rio Tinto (see consolidated balance sheet) $ 55,246 $ 54,586  
Equity attributable to non-controlling interests (see consolidated balance sheet) 2,719 1,755  
Net debt 5,491 4,231 $ 4,188
Capital and liquidity risk management      
Disclosure of detailed information about hedging instruments [Line Items]      
Equity attributable to owners of Rio Tinto (see consolidated balance sheet) 55,246 54,586  
Equity attributable to non-controlling interests (see consolidated balance sheet) 2,719 1,755  
Net debt 5,491 4,231  
Total capital $ 63,456 $ 60,572