share-based compensation - Expense (Details) - CAD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|
| share-based compensation | ||||
| Employee benefits expense | $ 30 | $ 43 | $ 64 | $ 70 |
| Associated operating cash outflows | (10) | (8) | (25) | (17) |
| Statement of cash flows adjustment | 20 | 35 | 39 | 53 |
| Income tax benefit arising from share-based compensation | 8 | 11 | 17 | 18 |
| Restricted share units | ||||
| share-based compensation | ||||
| Employee benefits expense | 17 | 34 | 40 | 52 |
| Associated operating cash outflows | (1) | 1 | (7) | 1 |
| Statement of cash flows adjustment | 16 | 35 | 33 | 53 |
| Cash inflows from cash-settled equity forward agreements | 2 | 2 | 3 | 4 |
| Employee share purchase plan | ||||
| share-based compensation | ||||
| Employee benefits expense | 9 | 9 | 18 | 18 |
| Associated operating cash outflows | (9) | $ (9) | (18) | $ (18) |
| Share option awards | ||||
| share-based compensation | ||||
| Employee benefits expense | 4 | 6 | ||
| Statement of cash flows adjustment | $ 4 | $ 6 | ||