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Integration, Transaction and Other Costs (Details) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Disclosure of detailed information about business combination [line items] |  |
Integration costs | $ 46 | $ 95
Transaction Costs (Note 5) | 11 | 11
Other (2) | 28 | 0
Integration, transaction and other costs | 85 | 106
Husky Energy, Inc. |  |
Disclosure of detailed information about business combination [line items] |  |
Integration, transaction and other costs |  | 90
Sunrise Oil Sands Partnership And Toledo CGU |  |
Disclosure of detailed information about business combination [line items] |  |
Integration, transaction and other costs | $ 46 | $ 5

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- Definition The amount of acquisition-related costs for transactions recognised separately from the acquisition of assets and the assumption of liabilities in business combinations. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2023-01-01 -Paragraph B64 -Subparagraph m -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B64_m&doctype=Appendix&subtype=B -URIDate 2023-03-23 + Details
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