Share-based payments - Schedule of Share-based Payments (Details) - CAD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Disclosure of terms and conditions of share-based payment arrangement [line items] | ||||
| Total share-based payments | $ (19) | $ (16) | $ (60) | $ (53) |
| Restricted share units (RSUs) and performance share units (PSUs) | ||||
| Disclosure of terms and conditions of share-based payment arrangement [line items] | ||||
| Total share-based payments | (11) | (9) | (37) | (38) |
| Stock options, employee savings plan and deferred share units | ||||
| Disclosure of terms and conditions of share-based payment arrangement [line items] | ||||
| Total share-based payments | $ (8) | $ (7) | $ (23) | $ (15) |