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Description of Business and Segmented Disclosures - Schedule of Revenues by Product (Detail) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Upstream |  |
Revenue | $ 52,204 | $ 66,897
U.S. Refining |  |
Consolidated | 52,204 | 66,897
Corporate and Eliminations |  |
Upstream |  |
Revenue | (8,234) | (7,387)
U.S. Refining |  |
Corporate and Eliminations | (8,234) | (7,387)
Consolidated | (8,234) | (7,387)
Upstream |  |
Upstream |  |
Revenue | 27,812 | 36,274
U.S. Refining |  |
Consolidated | 27,812 | 36,274
Upstream | Oil Sands |  |
Upstream |  |
Crude Oil | 22,550 | 28,921
NGLs | 352 | 877
Natural Gas and Other | 231 | 392
Canadian Refining |  |
Synthetic Crude Oil | 22,550 | 28,921
Upstream | Conventional |  |
Upstream |  |
Crude Oil | 589 | 429
NGLs | 799 | 926
Natural Gas and Other | 1,773 | 2,786
Canadian Refining |  |
Synthetic Crude Oil | 589 | 429
Upstream | Offshore |  |
Upstream |  |
Crude Oil | 385 | 581
NGLs | 280 | 354
Natural Gas | 853 | 1,008
Canadian Refining |  |
Synthetic Crude Oil | 385 | 581
Downstream |  |
Upstream |  |
Revenue | 32,626 | 38,010
U.S. Refining |  |
Consolidated | 32,626 | 38,010
Downstream | Canadian Refining |  |
Canadian Refining |  |
Diesel | 1,752 | 2,164
Asphalt | 571 | 620
Gasoline | 522 | 948
Other Products and Services | 1,264 | 1,700
U.S. Refining |  |
Gasoline | 522 | 948
Distillates | 1,752 | 2,164
Asphalt | 571 | 620
Other products | 1,264 | 1,700
Downstream | Canadian Refining | Synthetic Oil |  |
Upstream |  |
Crude Oil | 2,124 | 2,360
Canadian Refining |  |
Synthetic Crude Oil | 2,124 | 2,360
Downstream | U.S. Refining |  |
Canadian Refining |  |
Diesel | 9,612 | 11,453
Asphalt | 864 | 533
Gasoline | 12,375 | 14,116
Other Products and Services | 3,542 | 4,116
U.S. Refining |  |
Gasoline | 12,375 | 14,116
Distillates | 9,612 | 11,453
Asphalt | 864 | 533
Other products | $ 3,542 | $ 4,116

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