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Contingent Payments - Summary of Contingent Payments (Detail) - Sunrise Oil Sands Partnership $ in Millions	9 Months Ended
	Sep. 30, 2023 CAD ($)
Disclosure of contingent liabilities in business combination [line items]
Contingent payments. beginning of period	$ 419
Liabilities Settled or Payable	(207)
Re-measurement	83
Contingent payments, end of period	$ 295

X

- Definition

Re-measurement of contingent payments.

+ References

No definition available.

+ Details

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X

- Definition

The amount of contingent liabilities recognised in a business combination. [Refer: Contingent liabilities [member]; Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2023-01-01
-Paragraph B67
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B67_c&doctype=Appendix&subtype=B
-URIDate 2023-03-23

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X

- 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.

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X

- Definition

The amount of contingent liabilities recognised in a business combination that were settled. [Refer: Contingent liabilities recognised in business combination]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2023-01-01
-Paragraph B67
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B67_c&doctype=Appendix&subtype=B
-URIDate 2023-03-23

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- Details

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