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IMPAIRMENT (REVERSAL) CHARGE - Property, plant and equipment (Details) - USD ($) $ / shares in Units, $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Impairment charges |  |  |  |
Impairment (reversal) charge |  | $ (74.1) | $ 38.9 |
Accumulated depreciation, depletion, amortization and impairment |  |  |  |
Impairment charges |  |  |  |
Impairment reversal |  | 74.1 |  |
Round Mountain |  |  |  |
Impairment charges |  |  |  |
Impairment reversal |  | $ 74.1 |  |
Impairment (reversal) charge | $ (74.1) |  |  |
Impairment reversal on income tax expense | 0.7 |  |  |
Carrying amounts of property, plant and equipment | 464.5 |  |  |
Estimated long term gold price 2024 |  |  | $ 2,300 | $ 1,700
Estimated long term gold price 2025 |  |  | 2,300 | 1,700
Estimated long term gold price 2026 |  |  | 2,200 | 1,700
Estimated long term gold price per ounce |  |  | $ 2,000 | $ 1,600
Discount rate used in current estimate of value in use |  |  | 5.02% | 5.20%
Compania Minera Mantos de Oro |  |  |  |
Impairment charges |  |  |  |
Impairment reversal | $ 0.0 |  |  |
Estimated long term oil price 2024 |  |  | $ 80 |
Estimated long term oil price 2025 |  |  | 70 |
Estimated long term oil price 2026 |  |  | 70 |
Estimated long term oil price per barrel |  |  | $ 70 |
Discount rate used in current estimate of value in use |  |  | 10.40% |

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- Definition The amount of reversal of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Reversal of impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2023-01-01 -Paragraph 73 -Subparagraph e -Clause vi -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2023-en-r&anchor=para_73_e_vi&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 98 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_98_a&doctype=Standard -URIDate 2023-03-23 + Details
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