Income taxes - Reconciliation of Reported Income Taxes in the Income Statement (Details) - CAD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2025 |
Dec. 31, 2024 |
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| Income Taxes [Abstract] | ||
| Net earnings (losses) | $ 6,514 | $ 375 |
| Add back income taxes | 1,193 | 577 |
| Earnings before income taxes | $ 7,707 | $ 952 |
| Applicable statutory tax rate | 26.80% | 26.80% |
| Income taxes computed at applicable statutory rates | $ (2,065) | $ (255) |
| Non-taxable portion of net gains on investments | 850 | 18 |
| Uncertain tax positions | 22 | 4 |
| Impairment of goodwill | 0 | (303) |
| Change in estimate relating to prior periods | 0 | 1 |
| Non-taxable portion of equity losses | 0 | (66) |
| Previously unrecognized tax benefits | 0 | 3 |
| Other | 0 | 21 |
| Total income taxes | $ (1,193) | $ (577) |
| Average effective tax rate | 15.50% | 60.60% |
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- Definition Effect of Utilization of Previously Unrecognized Tax Credit No definition available.
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- Definition Income Taxes [Abstract] No definition available.
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- Definition Tax Effect Of Income Exempt From Taxation, Excluding Gains on Investments No definition available.
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- Definition Tax Effect Of Prior Year Income Taxes No definition available.
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- Definition Tax Effect Of Revenues Exempt From Taxation, Net Gains on Investments No definition available.
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- Definition Tax Effect Of Uncertain Tax Positions No definition available.
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- Definition The applicable income tax rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The tax expense (income) divided by the accounting profit. [Refer: Accounting profit] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount that represents the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that the entity does not separately disclose in the same statement or note. [Refer: Accounting profit; Applicable tax rate] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The profit (loss) from continuing operations. [Refer: Continuing operations, unless line item indicates otherwise [member]; Profit (loss)] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount representing the difference between the tax expense (income) and the product of the accounting profit multiplied by the applicable tax rate(s) that relates to impairment of goodwill. [Refer: Accounting profit; Goodwill] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The product of the accounting profit multiplied by the applicable tax rate(s). [Refer: Accounting profit; Applicable tax rate] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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