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Asset Impairments and Transactions - Fort Hills assets (Details) $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Feb. 02, 2023 CAD ($) | Dec. 31, 2022 CAD ($) | Sep. 30, 2022 CAD ($) $ / bbl $ / bbl $ / $ | Dec. 31, 2021 CAD ($) bbl / d $ / bbl $ / bbl $ / $ | Sep. 30, 2022 CAD ($) $ / bbl
Sensitivity analysis increase In discount rate |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Impairment loss, net of tax |  |  |  |  | $ 200
Fort Hills |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Recoverable amount of CGU net of tax |  |  | $ 2,800 |  | 2,800
Fort Hills | Sensitivity analysis, decrease in price |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Impairment loss, net of tax |  |  |  |  | $ 1,000
Reasonably possible decrease in unobservable input (as a percent) |  |  |  |  | 5.00%
Fort Hills | Sensitivity analysis increase In discount rate |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Reasonably possible increase in unobservable input (as a percent) |  |  |  |  | 1.00%
Oil Sands | Fort Hills |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Acquisition price | $ 688 |  |  |  |
Term of long-range plan |  |  | 3 years |  |
Impairment loss, net of tax |  |  | $ 2,600 |  |
Impairment loss |  |  |  | $ 0 |
Reversal of impairment loss |  |  |  | $ 0 |
Tax effect from asset impairment |  |  | $ 800 |  |
Impairment testing assumption, foreign exchange rate | $ / $ |  |  | 0.76 | 0.80 |
Impairment testing assumption, risk-adjusted discount rate, after tax |  |  | 8.25% | 7.50% | 8.25%
Recoverable amount of CGU net of tax |  |  |  | $ 5,500 |
Oil Sands | Fort Hills | Minimum |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Impairment testing assumption, share of barrels per day of crude oil produced |  |  | 87,000 | 94,000 |
Impairment testing assumption, average cash operating costs per bbl | $ / bbl |  |  |  | 22.00 |
Oil Sands | Fort Hills | Maximum |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Impairment testing assumption, share of barrels per day of crude oil produced |  |  | 106,000 | 111,000 |
Impairment testing assumption, average cash operating costs per bbl | $ / bbl |  |  | 25.00 | 23.00 |
Oil Sands | Fort Hills | Sensitivity analysis, decrease in price |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Impairment loss, net of tax |  |  |  | $ 1,000 |
Reasonably possible decrease in unobservable input (as a percent) |  |  |  | 5.00% |
Oil Sands | Fort Hills | Sensitivity analysis increase In discount rate |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Impairment loss, net of tax |  |  |  | $ 500 |
Reasonably possible increase in unobservable input (as a percent) |  |  |  | 1.00% |
Oil Sands | Fort Hills | Acquisition of Teck's interest in Fort Hills |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Percentage of ownership interests to be purchased under agreement |  | 21.3 |  |  |
Amount of agreement to purchase business interests |  | $ 1,000 |  |  |
Additional interest acquired (as a percent) | 14.65% |  |  |  |
Ownership interest (as percent) | 68.76% |  |  |  |
Oil Sands | Fort Hills | WCS | Forecast for 2022 |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Impairment testing assumption, price per barrel | $ / bbl |  |  |  | 55.00 |
Oil Sands | Fort Hills | WCS | Forecast for 2023 |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Impairment testing assumption, price per barrel | $ / bbl |  |  | 69.00 | 54.57 | 69.00
Oil Sands | Fort Hills | WCS | Forecast for 2024 |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Impairment testing assumption, price per barrel | $ / bbl |  |  | 62.00 |  | 62.00
Oil Sands | Fort Hills | WCS | Forecast for 2024 to 2031 |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Impairment testing assumption, price per barrel | $ / bbl |  |  |  | 50.86 |
Oil Sands | Fort Hills | WCS | Forecast for 2025 to 2031 | Average |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Impairment testing assumption, price per barrel | $ / bbl |  |  | 50.00 |  | 50.00
Oil Sands | Fort Hills | WCS | Forecast for 2032 to 2058 |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Impairment testing assumption, price per barrel escalation percentage |  |  | 2.00% | 2.00% | 2.00%
TotalEnergies EP Canada Ltd. | Oil Sands | Fort Hills |  |  |  |  |
Asset Impairments and Transactions |  |  |  |  |
Percentage of ownership interests disallowed under rights of refusal | 6.65 |  |  |  |

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