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Contingent Payments - Additional Information (Detail) $ in Millions |  |  | 1 Months Ended | 8 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jun. 13, 2022 CAD ($) | May 17, 2022 CAD ($) $ / bbl | Jan. 31, 2023 CAD ($) | Jul. 31, 2022 CAD ($) | Aug. 30, 2022 | Dec. 31, 2022 CAD ($) $ / bbl | Dec. 31, 2021 CAD ($) | Aug. 31, 2022 CAD ($) $ / bbl
Disclosure of contingent liabilities in business combination [line items] |  |  |  |  |  |  |  |
Average crude oil price | $ / bbl |  |  |  |  |  | 45.00 |  |
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] |  |  |  |  |  |  |  |
Proportion of ownership interest in joint operation | 35.00% |  |  |  | 50.00% |  |  |
Conoco Phillips Company and certain of its subsidiaries |  |  |  |  |  |  |  |
Disclosure of contingent liabilities in business combination [line items] |  |  |  |  |  |  |  |
Contingent payable |  |  |  | $ 177.0 |  |  | $ 160.0 |
Proportion of ownership interest in joint operation |  |  |  |  |  | 5000.00% |  |
Contingent payments period |  | 5 years |  |  |  |  |  |
Average crude oil price | $ / bbl |  | 52.00 |  |  |  |  |  |
Quarterly contingent payment |  | $ 6.0 |  |  |  |  |  |
Sunrise Oil Sands Partnership |  |  |  |  |  |  |  |
Disclosure of contingent liabilities in business combination [line items] |  |  |  |  |  |  |  |
Contingent consideration, quarterly payment |  |  |  |  |  |  |  | $ 2.8
Contingent consideration, price per barrel (in dollars per share) | $ / bbl |  |  |  |  |  |  |  | 52.00
Contingent Consideration Maximum Payment | $ 600.0 |  |  |  |  |  |  | $ 600.0
Contingent payable |  |  |  |  |  | $ 92.0 |  |
Sunrise Oil Sands Partnership | Major business combination [member] |  |  |  |  |  |  |  |
Disclosure of contingent liabilities in business combination [line items] |  |  |  |  |  |  |  |
Contingent payable |  |  | $ 92.0 |  |  |  |  |
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) | $ / bbl |  |  |  |  |  |  |  | 53.00

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