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ASSETS AND LIABILITIES HELD FOR SALE - Disposal of senegal assets (Details) - USD ($) $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Apr. 25, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |
Cash and cash equivalents |  | $ 367.1 | $ 407.8 | $ 544.9
Property, plant and equipment |  | 3,496.5 | 2,598.0 |
Other non-current assets |  | 76.3 | 128.8 |
Accounts payable and accrued liabilities |  | (317.6) | (294.1) |
Non-controlling interests |  | 58.1 | 76.0 |
Assets |  | 4,537.9 | 4,425.1 |
Net earnings (loss) from discontinued operations |  | 6.3 | (16.4) |
Discontinued operations |  |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |
Assets |  | 34.6 | 785.6 |
Net earnings (loss) from discontinued operations |  | $ 6.3 | $ (16.4) |
Senegal Assets | Discontinued operations |  |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |
Portion of consideration paid (received) consisting of cash and cash equivalents | $ 165.6 |  |  |
Portion of deferred consideration received consisting of cash and cash equivalents | 32.0 |  |  |
Transaction Costs Related To Disposal Of Subsidiaries | (3.7) |  |  |
Proceeds from disposal of non-current assets or disposal groups classified as held for sale and discontinued operations | 193.9 |  |  |
Net earnings (loss) from discontinued operations | 109.1 |  |  |
Assets and liabilities classified as held for sale | Senegal Assets | Discontinued operations |  |  |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |  |  |
Cash and cash equivalents | 1.4 |  |  |
Property, plant and equipment | 83.3 |  |  |
Other non-current assets | 1.1 |  |  |
Accounts payable and accrued liabilities | (0.6) |  |  |
Net carrying amount | 85.2 |  |  |
Non-controlling interests | (0.4) |  |  |
Assets | $ 84.8 |  |  |

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