POST-EMPLOYMENT BENEFITS - Present Value of Accrued Plan Benefits and Estimated Market Values of Net Assets (Details) - CAD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Disclosure of defined benefit plans [line items] | ||
| Net deferred pension asset | $ (93) | $ (93) |
| Domestic defined benefit plans | ||
| Disclosure of defined benefit plans [line items] | ||
| Plan assets, at fair value | 2,514 | 2,385 |
| Accrued benefit obligations | (2,249) | (2,197) |
| Surplus of plan assets over accrued benefit obligations | 265 | 188 |
| Effect of asset ceiling limit | (53) | (13) |
| Net deferred pension asset | 212 | 175 |
| Deferred pension asset | 217 | 183 |
| Deferred pension liability | $ (5) | $ (8) |
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- Definition The present value, without deducting any plan assets, of expected future payments required to settle the obligation resulting from employee service in the current and prior periods. [Refer: Plan assets, at fair value] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. No definition available.
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- Definition The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The amount of surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The amount of deficit in a defined benefit plan. [Refer: Defined benefit plans [domain]] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The fair value of any plan assets, less the present value of the defined benefit obligation. [Refer: Plan assets [member]] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Plan Asset, Effect Of Ceiling Limit No definition available.
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- Details
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