Remuneration of Directors and Senior Management (Details) - CAD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Non-management directors | |||
| Disclosure of transactions between related parties [line items] | |||
| Fees earned and salary | $ 3 | $ 3 | $ 3 |
| Senior management | |||
| Disclosure of transactions between related parties [line items] | |||
| Fees earned and salary | 2 | 2 | 2 |
| Common stock option based awards | 7 | 11 | 13 |
| Annual incentive plans | 6 | 6 | 5 |
| Long-term incentive plans | 19 | 20 | 19 |
| Total | $ 34 | $ 39 | $ 39 |