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v3.25.2

Commitments and contingencies (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Dec. 31, 2023 | Dec. 31, 2024
Other Disclosures [Line Items] |  |  |
Contingent liabilities indemnities and other performance guarantees | $ 197.0 |  | $ 192.0
Contingent liabilities incurred in relation to interests in joint ventures | 0.0 |  |
Capital commitments | 8,519.0 |  | 5,556.0
Contractual capital commitments | $ 2,905.0 |  | 1,872.0
Simfer Jersey Limited | Winning Consortium Simandou Railway Pte Ltd And Winning Consortium Simandou Ports Pte Ltd |  |  |
Other Disclosures [Line Items] |  |  |
Proportion of ownership interest in associate | 34.00% |  |
Rio Tinto Finance Usa Limited And Rio Tinto Finance Usa Plc | Contingent liabilities related to joint ventures |  |  |
Other Disclosures [Line Items] |  |  |
Contractual payments |  | $ 10.5 |
Total for all joint ventures |  |  |
Other Disclosures [Line Items] |  |  |
Capital commitments | $ 1,107.0 |  | $ 1,551.0

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