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Debt and Capital Structure - Schedule of Short-Term Borrowings (Detail) - CAD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
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Disclosure of detailed information about borrowings [line items] |  |
Uncommitted demand facilities | $ 0 | $ 0
Total Debt Principal | 0 | 79
WRB Refining LP |  |
Disclosure of detailed information about borrowings [line items] |  |
Uncommitted demand facilities | 0 | 79
Sunrise Oil Sands Partnership |  |
Disclosure of detailed information about borrowings [line items] |  |
Uncommitted demand facilities | $ 0 | $ 0

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- Definition The amount of current borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard -URIDate 2021-03-24 + Details
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