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DEFERRED REVENUE - Changes in Deferred Revenue (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Revenue From Contract With Customer [Roll Forward] |  |
Contract liabilities at beginning of period | $ 251.6 | $ 240.8
Proceeds from gold prepayment | 119.3 |
Deferred revenue recognized | 235.7 |
Finance costs | 15.9 | 10.8
Contract liabilities at end of period | 151.1 | 251.6
Current portion of deferred revenue | 151.1 | 240.7
Deferred revenue | 0.0 | 10.9
Current portion of deferred revenue | 151.1 |
2022 Prepay Arrangements |  |
Revenue From Contract With Customer [Roll Forward] |  |
Contract liabilities at beginning of period | 251.6 | 240.8
Proceeds from gold prepayment | 0.0 |
Deferred revenue recognized | 235.7 |
Finance costs | 6.7 | 10.8
Contract liabilities at end of period | 22.6 | 251.6
Current portion of deferred revenue | 22.6 |
Deferred revenue | 0.0 |
Current portion of deferred revenue | 22.6 |
2024 Q1 Prepay Arrangements |  |
Revenue From Contract With Customer [Roll Forward] |  |
Contract liabilities at beginning of period | 0.0 | 0.0
Proceeds from gold prepayment | 59.9 |
Deferred revenue recognized | 0.0 |
Finance costs | 5.6 | 0.0
Contract liabilities at end of period | 65.5 | 0.0
Current portion of deferred revenue | 65.5 |
Deferred revenue | 0.0 |
Current portion of deferred revenue | 65.5 |
2024 Q2 Prepay Arrangements |  |
Revenue From Contract With Customer [Roll Forward] |  |
Contract liabilities at beginning of period | 0.0 | 0.0
Proceeds from gold prepayment | 59.4 |
Deferred revenue recognized | 0.0 |
Finance costs | 3.6 | 0.0
Contract liabilities at end of period | 63.0 | $ 0.0
Current portion of deferred revenue | 63.0 |
Deferred revenue | 0.0 |
Current portion of deferred revenue | $ 63.0 |

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- Definition The amount of an entity’s obligation to transfer goods or services to a customer for which the entity has received consideration (or the amount is due) from the customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 105 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_105&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 116 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_116_a&doctype=Standard -URIDate 2024-03-27 + Details
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