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Contingent Payments - Additional Information (Detail) |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
May 17, 2022 | Jul. 31, 2022 CAD ($) | Dec. 31, 2023 CAD ($) | Dec. 31, 2022 CAD ($) | Aug. 31, 2022 CAD ($) $ / bbl
FCCL Partnership |  |  |  |  |
Disclosure of contingent liabilities in business combination [line items] |  |  |  |  |
Proportion of ownership interest in joint operation | 50.00% |  |  |  |
Sunrise Oil Sands Partnership |  |  |  |  |
Disclosure of contingent liabilities in business combination [line items] |  |  |  |  |
Contingent consideration maximum payment |  |  |  |  | $ 600,000,000
Contingent consideration, quarterly payment |  |  |  |  | 2,800,000
Maximum payment over remaining term |  |  |  |  | $ 194,000,000
Contingent payable |  |  | $ 314,000,000 | $ 92,000,000 |
Sunrise Oil Sands Partnership | Bottom of range |  |  |  |  |
Disclosure of contingent liabilities in business combination [line items] |  |  |  |  |
Contingent consideration, price per barrel (in dollars per share) | $ / bbl |  |  |  |  | 52.00
Sunrise Oil Sands Partnership | Top of range |  |  |  |  |
Disclosure of contingent liabilities in business combination [line items] |  |  |  |  |
Contingent consideration, price per barrel (in dollars per share) |  |  |  |  | 53.00
Sunrise Oil Sands Partnership | Major business combination |  |  |  |  |
Disclosure of contingent liabilities in business combination [line items] |  |  |  |  |
Contingent payable |  |  | $ 299,000,000 |  |
Conoco Phillips Company and certain of its subsidiaries |  |  |  |  |
Disclosure of contingent liabilities in business combination [line items] |  |  |  |  |
Contingent payable |  | $ 177,000,000 |  |  |

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