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General and Administrative - Summary of General and Administrative Expenses (Detail) - CAD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
General And Administrative Expenses [Abstract]
Salaries and Benefits	$ 269	$ 249
Administrative and Other	399	342
Stock-Based Compensation Expense (Recovery) (Note 29)	126	97
General and Administrative Expenses	$ 794	$ 688

X

- Definition

Administrative And Other Expenses

+ References

No definition available.

+ Details

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Namespace Prefix:	cve_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Expense (recovery) from share-based payment transactions.

+ References

No definition available.

+ Details

Name:	cve_ExpenseRecoveryFromShareBasedPaymentTransactions
Namespace Prefix:	cve_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

General and administrative expenses.

+ References

No definition available.

+ Details

Name:	cve_GeneralAndAdministrativeExpensesAbstract
Namespace Prefix:	cve_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Salaries and benefits

+ References

No definition available.

+ Details

Name:	cve_SalariesAndBenefits
Namespace Prefix:	cve_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The amount of expense relating to general and administrative activities of the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_GeneralAndAdministrativeExpense
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration