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INCOME TAXES - Schedule of Income Tax Rate Reconciliation (Details) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
INCOME TAX RATE RECONCILIATION |  |  |
Earnings before income taxes | $ 7,299 | $ 7,879 | $ 4,542
Canadian federal statutory income tax rate | 15.00% | 15.00% | 15.00%
Expected federal taxes at statutory rate | $ 1,095 | $ 1,182 | $ 681
Increase/(decrease) resulting from: |  |  |
Provincial and state income taxes | 183 | 411 | 108
Foreign and other statutory rate differentials | 340 | 187 | 295
Effects of rate-regulated accounting | (192) | (106) | (122)
Write-off of regulatory deferrals | 4 | 115 | 0
Part VI.1 tax, net of federal Part I deduction | 73 | 66 | 76
US minimum tax | 148 | 100 | 107
Non-taxable portion of gain on sale of investment | (147) | 0 | 0
Valuation allowance | (2) | (12) | 6
Accounting impairment of non-deductible goodwill | 148 | 0 | 370
Noncontrolling interests | (30) | 19 | 9
Investment and production tax credits | (23) | (47) | 0
Other | 71 | (94) | 74
Income tax expense | $ 1,668 | $ 1,821 | $ 1,604
Effective income tax rate (as a percent) | 22.90% | 23.10% | 35.30%

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