| In millions, except per share items | Dec-31-21 | Dec-31-20 | Dec-31-18 | Dec-31-17 |
| | Source | Source | Source | Source |
| Product sales | | | | |
| Less: royalties | | | | |
| Revenue | | | | |
| Expenses | | | | |
| Production | 7,152 | 6,280 | 6,464 | |
| Transportation, blending and feedstock | 6,604 | 4,498 | 4,189 | |
| |
| Depletion, depreciation and amortization | | | | |
| Administration | | | | |
| Share-based compensation | | | | |
| Asset retirement obligation accretion | 185 | 205 | 186 | |
| |
| Interest and other financing expense | | | | |
| Risk management activities | | | | |
| Foreign exchange loss (gain) | | | | |
| Gain on acquisitions | | | | |
| Income from North West Redwater Partnership | | | | |
| (Gain) loss from investments | | | | |
| Total expenses | | | | |
| Earnings (loss) before taxes | | | | |
| Current income tax expense (recovery) | | | | |
| Deferred income tax (recovery) expense | | | | |
| Net earnings (loss) | | | | |
| Net earnings (loss) per common share | | | | |
| Basic earnings per share (in CAD per share) | | | | |
| Diluted earnings per share (in CAD per share) | | | | |