Employee Future Benefits - Schedule of Level 3 Changes in Plan Assets (Details) - CAD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
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| Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] | ||
| Balance, beginning of year | $ 3,468 | |
| Balance, end of year | 3,743 | $ 3,468 |
| Level 3 | ||
| Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward] | ||
| Balance, beginning of year | 282 | 256 |
| Return on plan assets | (9) | 28 |
| Foreign currency translation | (1) | 3 |
| Purchases, sales and settlements | 19 | (5) |
| Balance, end of year | $ 291 | $ 282 |
| X | ||||||||||
- Definition Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan from actual return (loss) on assets still held. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, measured using unobservable input, of increase (decrease) in plan asset of defined benefit plan from purchase, sale and settlement of trade associated with underlying investment. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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