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INCOME TAX EXPENSE (Tables) | 12 Months Ended
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Dec. 31, 2024
INCOME TAX EXPENSE |
Schedule of components of the current and deferred tax expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years ended December 31,
​ |  | 2024 |  | 2023
Current tax expense |  | ​ |  |  | ​ |
Current period | ​ | $ | 376.3 | ​ | $ | 149.0
Settlement or adjustment for prior periods | ​ |  | (1.1) | ​ |  | 0.3
​ | ​ | ​ | ​ | ​ | ​ | ​
Deferred tax expense | ​ |  |  | ​ |  |
Origination and reversal of temporary differences | ​ |  | 115.8 | ​ |  | 56.4
Settlement or adjustment for prior periods | ​ | ​ | (32.6) | ​ | ​ | 57.3
Change in unrecognized deferred tax assets from impairment (reversal) charges | ​ | ​ | (17.8) | ​ | ​ | 8.8
Change in unrecognized deferred tax assets | ​ |  | 46.8 | ​ |  | 21.4
Total tax expense | ​ | $ | 487.4 | ​ | $ | 293.2
​ ​
Schedule of reconciliation of the combined Canadian federal and provincial statutory income tax rate to the effective tax rate | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Years ended December 31, | ​
​ | ​ | ​ | 2024 |  | ​ | 2023 | ​
Earnings before income tax | ​ | $ | 1,481.4 | ​ | $ | 708.6 | ​
Statutory Rate | ​ | ​ | 26.5 | % | ​ | 26.5 | %
Expected income tax expense | ​ | $ | 392.6 | ​ | $ | 187.8 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Increase (decrease) resulting from: |  | ​ |  |  | ​ |  | ​
Foreign exchange on deferred income taxes within income tax expenses |  | ​ | 86.4 | ​ | ​ | 29.3 | ​
Change in unrecognized deferred tax assets | ​ | ​ | 46.8 | ​ | ​ | 21.4 | ​
Mining and state taxes | ​ | ​ | 36.6 | ​ | ​ | 6.2 | ​
Difference in foreign tax rates | ​ | ​ | 15.4 | ​ | ​ | 20.9 | ​
Tax on (recovery from) repatriation of foreign earnings | ​ | ​ | 6.0 | ​ | ​ | (18.2) | ​
True-up of prior provisions to tax filings |  | ​ | 2.6 | ​ | ​ | 3.6 | ​
Tax impact on non-controlling interest | ​ | ​ | (9.7) | ​ | ​ | — | ​
Percentage of depletion | ​ | ​ | (11.7) | ​ | ​ | (12.9) | ​
Change in unrecognized deferred tax assets from impairment (reversal) charges | ​ | ​ | (17.8) | ​ | ​ | 8.8 | ​
Net accounting expenses (income) not deductible (taxable) for tax | ​ | ​ | (21.8) | ​ | ​ | 19.8 | ​
Change in income tax related uncertain tax positions | ​ | ​ | (35.5) | ​ | ​ | 22.3 | ​
Other |  | ​ | (2.5) | ​ | ​ | 4.2 | ​
Income tax expense |  | $ | 487.4 | ​ | $ | 293.2 | ​
​
Schedule of components of deferred income tax | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
​ | ​ | 2024 | ​ | 2023
Deferred tax assets |  | ​ |  |  | ​ |
Reclamation and remediation obligations | ​ | $ | 116.6 | ​ | $ | 105.9
Accrued expenses and other | ​ | ​ | 93.8 | ​ | ​ | 63.5
Property, plant and equipment | ​ |  | 4.8 | ​ |  | 5.8
Losses | ​ |  | 0.7 | ​ | ​ | 8.0
​ | ​ |  | 215.9 | ​ |  | 183.2
Deferred tax liabilities | ​ |  |  | ​ |  |
Property, plant and equipment | ​ |  | 694.2 | ​ |  | 581.1
Inventory capitalization | ​ |  | 65.3 | ​ |  | 36.7
Reclamation and remediation obligations | ​ | ​ | 0.1 | ​ | ​ | 2.6
​ | ​ | $ | 759.6 | ​ | $ | 620.4
Deferred tax liabilities - net | ​ | $ | 543.7 | ​ | $ | 437.2
Schedule of movement in net deferred tax liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
​ | ​ | 2024 | ​ | 2023
Balance at the beginning of the period | ​ | $ | 437.2 | ​ | $ | 296.9
Recognized in the statement of operations | ​ |  | 112.2 | ​ |  | 143.9
Recognized in OCI | ​ |  | (5.3) | ​ |  | (3.6)
Other | ​ | ​ | (0.4) | ​ | ​ | —
Balance at the end of the period | ​ | $ | 543.7 | ​ | $ | 437.2
​ ​
Schedule of unrecognized deferred tax assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
​ | ​ | 2024 | ​ | 2023
Deductible temporary differences | ​ | $ | 775.7 | ​ | $ | 736.7
Tax losses | ​ | $ | 467.6 | ​ | $ | 469.6
​
Schedule of unrecognized non-capital losses | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Country |  | Type |  | Amount |  | Expiry Date
Canada |  | Net operating losses | ​ | $ | 1,352.8 |  | 2027 - 2044
United States(a) |  | Net operating losses | ​ |  | 259.0 |  | 2025-2026 & No expiry
Chile |  | Net operating losses | ​ |  | 133.3 |  | No expiry
Brazil | ​ | Net operating losses | ​ | ​ | 1.7 | ​ | No expiry
Mauritania | ​ | Net operating losses | ​ | ​ | 13.1 | ​ | 2025 - 2029
Luxembourg |  | Net operating losses | ​ |  | 31.0 |  | Various
Other |  | Net operating losses | ​ |  | 52.2 |  | Various
(a) | Utilization of the United States loss carry forwards will be limited in any year as a result of the previous changes in ownership.

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- Definition The disclosure of detailed information about reconciliation using percentage or amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References No definition available. + Details
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- Definition The disclosure of detailed information about components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References No definition available. + Details
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