Summary of Significant Accounting Policies - Additional Information (Detail)		12 Months Ended
Oct. 26, 2022	Dec. 31, 2022
NuevaUnión
Disclosure of joint ventures [line items]
Ownership interest in joint venture		50.00%
Galore Creek Partnership
Disclosure of joint ventures [line items]
Ownership interest in joint operation		50.00%
Fort Hills Energy Limited Partnership
Disclosure of joint ventures [line items]
Ownership interest in joint operation		21.30%
Ownership interest in joint venture sale	21.30%	21.30%
Antamina
Disclosure of joint ventures [line items]
Ownership interest in joint operation		22.50%

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.

No definition available.

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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 2022-03-24
-Paragraph 21
-Subparagraph a
-Clause iv
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-URIDate 2022-03-24

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- Definition

The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Joint ventures [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2022-03-24
-Paragraph 17
-Subparagraph b
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Proportion Of Ownership Interest In Joint Operation Held For Sale

+ References

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