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Income Taxes | 12 Months Ended
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Dec. 31, 2023
Income Taxes [Abstract] |
Income Taxes | 23. Income Taxes a) Tax Rate Reconciliation to the Canadian Statutory Income Tax Rate
(CAD$ in millions) |  | 2023 |  | 2022
Profit from continuing operations before taxes |  | $ | 3,944 |  |  | $ | 6,565 |
Loss from discontinued operations before taxes (Note 5) |  | (28) |  |  | (956) |
Profit for the year from continuing and discontinued operations before taxes |  | $ | 3,916 |  |  | $ | 5,609 |
Tax expense at the Canadian statutory income tax rate of 27% (2022 – 26.53%) |  | $ | 1,057 |  |  | $ | 1,488 |
Tax effect of: |  |  |  |
Resource taxes |  | 419 |  |  | 670 |
Resource and depletion allowances |  | (64) |  |  | (96) |
Non-deductible expenses (non-taxable income) |  | 42 |  |  | 74 |
Tax pools not recognized (recognition of previously unrecognized tax pools) |  | 8 |  |  | 5 |
Effect of new Chilean royalty (f) |  | 106 |  |  | — |
Difference in tax rates in foreign jurisdictions |  | 48 |  |  | 76 |
Revisions to prior year estimates |  | 17 |  |  | 15 |
Non-controlling interests |  | (25) |  |  | (21) |
Effect from sale of Fort Hills |  | 2 |  |  | 83 |
Other |  | (2) |  |  | 17 |
Total income taxes from continuing and discontinued operations |  | $ | 1,608 |  |  | $ | 2,311 |
Represented by: |  |  |  |
Current income taxes |  | 2,228 |  |  | 1,413 |
Deferred income taxes |  | (620) |  |  | 898 |
Total income taxes from continuing and discontinued operations |  | $ | 1,608 |  |  | $ | 2,311 |
Provision for income taxes from continuing operations |  | 1,610 |  | 2,495
Recovery of income taxes from discontinued operations |  | (2) |  | (184)
Total income taxes from continuing and discontinued operations |  | $ | 1,608 |  |  | $ | 2,311 |
Current income taxes are accrued and paid in all jurisdictions in which we operate. 23. Income Taxes (continued) b) Continuity of Deferred Tax Assets and Liabilities
(CAD$ in millions) |  | January 1, 2023 |  | Through Profit (Loss) |  | Through OCI |  | Transfer | December 31, 2023
Net operating loss and capital loss carryforwards |  | $ | 48 |  |  | $ | 13 |  |  | $ | — |  |  | $ | — |  | $ | 61 |
Property, plant and equipment |  | (165) |  |  | (2) |  |  | — |  |  | — |  | (167) |
Decommissioning and restoration provisions |  | 155 |  |  | 12 |  |  | — |  |  | — |  | 167 |
Other timing differences (TDs) |  | 37 |  |  | (21) |  |  | (12) |  |  | — |  | 4 |
Deferred income tax assets |  | $ | 75 |  |  | $ | 2 |  |  | $ | (12) |  |  | $ | — |  | $ | 65 |
Net operating loss and capital loss carryforwards |  | $ | (458) |  |  | $ | (205) |  |  | $ | 11 |  |  | $ | — |  | $ | (652) |
Property, plant and equipment |  | 7,234 |  |  | 638 |  |  | (46) |  |  | 68 |  | 7,894 |
Decommissioning and restoration provisions |  | (803) |  |  | (371) |  |  | 7 |  |  | — |  | (1,167) |
Unrealized foreign exchange |  | (91) |  |  | 7 |  |  | 9 |  |  | — |  | (75) |
Withholding taxes |  | 133 |  |  | (14) |  |  | (3) |  |  | — |  | 116 |
Inventories |  | 148 |  |  | 10 |  |  | 3 |  |  | — |  | 161 |
Partnership income deferral and other TDs |  | 615 |  |  | (754) |  |  | 50 |  |  | — |  | (89) |
Deferred income tax liabilities |  | $ | 6,778 |  |  | $ | (689) |  |  | $ | 31 |  |  | $ | 68 |  | $ | 6,188 |
The transfer column refers to deferred tax assets and deferred tax liabilities related to assets held for sale (Note 5).
(CAD$ in millions) |  | January 1, 2022 |  | Through Profit (Loss) |  | Through OCI |  | Transfer | December 31, 2022
Net operating loss and capital loss carryforwards |  | $ | 141 |  |  | $ | (98) |  |  | $ | 5 |  |  | $ | — |  | $ | 48 |
Property, plant and equipment |  | (180) |  |  | 15 |  |  | — |  |  | — |  | (165) |
Decommissioning and restoration provisions |  | 190 |  |  | (35) |  |  | — |  |  | — |  | 155 |
Other TDs |  | 10 |  |  | 51 |  |  | (24) |  |  | — |  | 37 |
Deferred income tax assets |  | $ | 161 |  |  | $ | (67) |  |  | $ | (19) |  |  | $ | — |  | $ | 75 |
Net operating loss and capital loss carryforwards |  | $ | (532) |  |  | $ | 93 |  |  | $ | (19) |  |  | $ | — |  | $ | (458) |
Property, plant and equipment |  | 7,546 |  |  | (333) |  |  | 89 |  |  | (68) |  | 7,234 |
Decommissioning and restoration provisions |  | (1,050) |  |  | 261 |  |  | (14) |  |  | — |  | (803) |
Unrealized foreign exchange |  | (85) |  |  | 3 |  |  | (9) |  |  | — |  | (91) |
Withholding taxes |  | 100 |  |  | 27 |  |  | 6 |  |  | — |  | 133 |
Inventories |  | 156 |  |  | (9) |  |  | 1 |  |  | — |  | 148 |
Partnership income deferral and other TDs |  | (162) |  |  | 789 |  |  | (12) |  |  | — |  | 615 |
Deferred income tax liabilities |  | $ | 5,973 |  |  | $ | 831 |  |  | $ | 42 |  |  | $ | (68) |  | $ | 6,778 |
23. Income Taxes (continued) c) Deferred Tax Assets and Liabilities Not Recognized We have not recognized $57 million (2022 – $299 million) of deferred tax assets associated with unused tax credits and tax pools in entities and jurisdictions that do not have established sources of taxable income. Of the amount in 2022, $248 million related to the Quintette disposal group, which was sold in February 2023 (Note 6(c)). Deferred tax liabilities of approximately $836 million (2022 – $858 million) have not been recognized on the unremitted foreign earnings associated with investments in subsidiaries and interests in joint arrangements where we control the timing of the reversal of the temporary differences and it is probable that such differences will not reverse in the foreseeable future. d) Loss Carryforwards At December 31, 2023, we had $282 million Canadian net operating loss carryforwards (2022 – $166 million) and $1.89 billion (2022 – $1.22 billion) of Chilean net operating losses, which have an indefinite carryforward period. The deferred tax benefit of these pools has been recognized. e) Scope of Antamina’s Peruvian Tax Stability Agreement The Peruvian tax authority, La Superintendencia Nacional de Aduanas y de Administración Tributaria (SUNAT), issued income tax assessments for the 2013 to 2017 taxation years to Antamina (our joint operation in which we own a 22.5% share), denying accelerated depreciation claimed by Antamina in respect of a mill expansion and other assets, on the basis that the expansion was not covered by Antamina’s tax stability agreement applicable for the years up until 2017. Antamina is continuing to pursue the matter in the Peruvian Judiciary Courts. The denial of accelerated depreciation claimed is a timing issue in our tax provision, which we have recognized together with our share of previously paid interest and penalties. f) Chilean Mining Royalty Reform The new two-tiered Chilean mining royalty regime on copper revenues and profit was enacted into law in 2023. As a result, we recognized a deferred tax expense of $106 million, which represents our estimated additional future mining royalties following the expiration of the tax stability agreements for Carmen de Andacollo and Quebrada Blanca in 2027 and 2037, respectively. This expense was calculated based on the existing taxable temporary differences that are scheduled to reverse in future years.

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