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Entities accounted under the equity method Principal joint ventures - Principal joint ventures and associates (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure Of Joint Ventures And Associates [Line Items]      
(Loss)/profit after tax $ 11,574 $ 9,953 $ 13,048
Other comprehensive (loss)/income (3,374) 319 (1,897)
Total comprehensive income/(loss) [1] 8,200 10,272 $ 11,151
Total for all associates      
Disclosure Of Joint Ventures And Associates [Line Items]      
Carrying value of Group's interest 2,351 1,878  
(Loss)/profit after tax (42) 26  
Other comprehensive (loss)/income (44) 15  
Total comprehensive income/(loss) $ (86) $ 41  
[1] Refer to the consolidated statement of comprehensive income for further details. Adjustments to other reserves include currency translation attributable to owners of Rio Tinto, other than that
arising on Rio Tinto Limited’s share capital.