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Critical Accounting Judgments, Key Sources of Estimation Uncertainty - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2021
WRB Refining LP |
Disclosure of joint operations [line items] |
Proportion of ownership interest in joint operation | 50.00%
Sunrise Oil Sands Partnership |
Disclosure of joint operations [line items] |
Proportion of ownership interest in joint operation | 50.00%
BP-Husky Refining LLC |
Disclosure of joint operations [line items] |
Proportion of ownership interest in joint operation | 50.00%

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The proportion of ownership interest in a joint operation attributable to the entity. [Refer: Joint operations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2021-01-01 -Paragraph 21 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2021-en-r&anchor=para_21_a_iv&doctype=Standard -URIDate 2021-03-24 + Details
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- Details
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- Details
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- Details
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