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Goodwill - Summary of goodwill (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Disclosure of reconciliation of changes in goodwill [Line Items] |  |
Goodwill at beginning of period | $ 797 | $ 826
Adjustment on currency translation | (45) | (29)
Company no longer consolidated | (25) | 0
Goodwill at end of period | 727 | 797
Richards Bay Minerals |  |
Disclosure of reconciliation of changes in goodwill [Line Items] |  |
Goodwill at beginning of period | 370 |
Goodwill at end of period | 364 | 370
Pilbara |  |
Disclosure of reconciliation of changes in goodwill [Line Items] |  |
Goodwill at beginning of period | 342 |
Goodwill at end of period | 310 | 342
Dampier Salt |  |
Disclosure of reconciliation of changes in goodwill [Line Items] |  |
Goodwill at beginning of period | 85 |
Goodwill at end of period | 53 | 85
- cost |  |
Disclosure of reconciliation of changes in goodwill [Line Items] |  |
Goodwill at beginning of period | 16,237 | 15,974
Goodwill at end of period | 14,959 | 16,237
- accumulated impairment |  |
Disclosure of reconciliation of changes in goodwill [Line Items] |  |
Goodwill at beginning of period | (15,440) | (15,148)
Goodwill at end of period | $ (14,232) | $ (15,440)

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- Definition The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Total for all business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2024-01-01 -Paragraph 134 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_134_a&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2024-01-01 -Paragraph 135 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2024-en-r&anchor=para_135_a&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2024-01-01 -Paragraph B67 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B67_d&doctype=Appendix&subtype=B -URIDate 2024-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 54 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_54_c&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of goodwill derecognised without having previously been included in a disposal group classified as held for sale. [Refer: Goodwill; Disposal groups classified as held for sale [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2024-01-01 -Paragraph B67 -Subparagraph d -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B67_d_iv&doctype=Appendix&subtype=B -URIDate 2024-03-27 + Details
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- Definition The increase (decrease) in goodwill resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2024-01-01 -Paragraph B67 -Subparagraph d -Clause vi -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2024-en-r&anchor=para_B67_d_vi&doctype=Appendix&subtype=B -URIDate 2024-03-27 + Details
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