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Principal subsidiaries - Subsidiaries financial information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of subsidiaries [line items] |  |  |  |
Revenue |  | $ 53,658 | $ 54,041 | $ 55,554
Profit/(loss) after tax |  | 11,574 | 9,953 | 13,048
Profit/(loss) after tax – attributable to non-controlling interests |  | 22 | (105) | 656
Profit/(loss) after tax – attributable to owners of Rio Tinto |  | 11,552 | 10,058 | 12,392
Other comprehensive (loss)/income |  | (3,374) | 319 | (1,897)
Total comprehensive income/(loss) | [1] | 8,200 | 10,272 | 11,151
Non-current assets |  | 83,666 | 82,039 |
Current assets |  | 19,120 | 21,510 |
Current liabilities |  | (11,743) | (12,743) |
Non-current liabilities |  | (33,078) | (34,465) |
Net assets/(liabilities) |  | 57,965 | 56,341 |
– attributable to non-controlling interests |  | 2,719 | 1,755 |
– attributable to Rio Tinto |  | 55,246 | 54,586 |
Cash flow from operations |  | 15,599 | 15,160 | 16,134
Dividends paid to non-controlling interests |  | (477) | (462) | $ (421)
Iron Ore Company of Canada |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Revenue |  | 2,255 | 2,314 |
Profit/(loss) after tax |  | 321 | 445 |
Profit/(loss) after tax – attributable to non-controlling interests |  | 133 | 184 |
Profit/(loss) after tax – attributable to owners of Rio Tinto |  | 188 | 261 |
Other comprehensive (loss)/income |  | (205) | 60 |
Total comprehensive income/(loss) |  | 116 | 505 |
Non-current assets |  | 2,987 | 3,170 |
Current assets |  | 711 | 866 |
Current liabilities |  | (541) | (519) |
Non-current liabilities |  | (937) | (1,005) |
Net assets/(liabilities) |  | 2,220 | 2,512 |
– attributable to non-controlling interests |  | 934 | 1,052 |
– attributable to Rio Tinto |  | 1,286 | 1,460 |
Cash flow from operations |  | 735 | 801 |
Dividends paid to non-controlling interests |  | (165) | (103) |
Simfer Jersey |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Revenue |  | 0 | 0 |
Profit/(loss) after tax |  | (25) | (199) |
Profit/(loss) after tax – attributable to non-controlling interests |  | (18) | (114) |
Profit/(loss) after tax – attributable to owners of Rio Tinto |  | (7) | (85) |
Other comprehensive (loss)/income |  | 0 | 0 |
Total comprehensive income/(loss) |  | (25) | (199) |
Non-current assets |  | 2,908 | 789 |
Current assets |  | 545 | 83 |
Current liabilities |  | (402) | (67) |
Non-current liabilities |  | (45) | (1,016) |
Net assets/(liabilities) |  | 3,006 | (211) |
– attributable to non-controlling interests |  | 1,335 | (130) |
– attributable to Rio Tinto |  | 1,671 | (81) |
Cash flow from operations |  | (850) | 262 |
Dividends paid to non-controlling interests |  | 0 | 0 |
Oyu Tolgoi LLC |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Revenue |  | 2,184 | 1,625 |
Profit/(loss) after tax |  | (1,077) | (1,024) |
Profit/(loss) after tax – attributable to non-controlling interests |  | (436) | (352) |
Profit/(loss) after tax – attributable to owners of Rio Tinto |  | (641) | (672) |
Other comprehensive (loss)/income |  | 0 | 0 |
Total comprehensive income/(loss) |  | (1,077) | (1,024) |
Non-current assets |  | 16,535 | 15,335 |
Current assets |  | 581 | 511 |
Current liabilities |  | (672) | (4,920) |
Non-current liabilities |  | (18,860) | (12,544) |
Net assets/(liabilities) |  | (2,416) | (1,618) |
– attributable to non-controlling interests |  | (994) | (558) |
– attributable to Rio Tinto |  | (1,422) | (1,060) |
Cash flow from operations |  | 1,039 | 345 |
Dividends paid to non-controlling interests |  | 0 | 0 |
Robe River Mining Co Pty Ltd |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Revenue |  | 1,746 | 1,753 |
Profit/(loss) after tax |  | 782 | 848 |
Profit/(loss) after tax – attributable to non-controlling interests |  | 313 | 339 |
Profit/(loss) after tax – attributable to owners of Rio Tinto |  | 469 | 509 |
Other comprehensive (loss)/income |  | (279) | 40 |
Total comprehensive income/(loss) |  | 503 | 888 |
Non-current assets |  | 2,695 | 2,899 |
Current assets |  | 743 | 808 |
Current liabilities |  | (124) | (157) |
Non-current liabilities |  | (422) | (443) |
Net assets/(liabilities) |  | 2,892 | 3,107 |
– attributable to non-controlling interests |  | 1,153 | 1,241 |
– attributable to Rio Tinto |  | 1,739 | 1,866 |
Cash flow from operations |  | 1,274 | 1,480 |
Dividends paid to non-controlling interests |  | $ (282) | $ (345) |
[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.

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