Debt discounts and transaction costs.

No definition available.

Name:	cve_DebtDiscountsAndTransactionCosts
Namespace Prefix:	cve_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of current borrowings and current portion of non-current borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The current portion of non-current borrowings. [Refer: Borrowings]

+ References

+ Details

Name:	ifrs-full_CurrentPortionOfLongtermBorrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Name:	ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The non-current portion of non-current borrowings. [Refer: Borrowings]

+ References

+ Details

Name:	ifrs-full_LongtermBorrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The non-current portion of non-current loans received. [Refer: Loans received]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard
-URIDate 2025-03-27

+ Details

Name:	ifrs-full_NoncurrentPortionOfNoncurrentLoansReceived
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The non-current portion of non-current other borrowings. [Refer: Other borrowings]

+ References

+ Details

Name:	ifrs-full_NoncurrentPortionOfOtherNoncurrentBorrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of notes and debentures issued by the entity.

+ References

+ Details

Name:	ifrs-full_NotesAndDebenturesIssued
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	ifrs-full_TypesOfFinancialLiabilitiesAxis=ifrs-full_LongtermBorrowingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=cve_RevolvingTermDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=cve_USDollarDenominatedUnsecuredNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=cve_CanadianDollarUnsecuredNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=cve_TermLoanFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

DEBT AND CAPITAL STRUCTURE - Schedule of Long-Term Debt (Details) $ in Millions, $ in Billions	Sep. 30, 2026 CAD ($)	Sep. 30, 2026 USD ($)	Dec. 31, 2025 CAD ($)	Dec. 31, 2025 USD ($)
Disclosure of detailed information about borrowings [line items]
Net Debt Premiums (Discounts) and Transaction Costs	$ 2		$ (5)
Long-Term Debt	8,547		11,032
Less: Current Portion	0		0
Long-Term Debt	8,547		11,032
Long-Term Debt
Disclosure of detailed information about borrowings [line items]
Total Debt Principal, (CAD equivalent)	8,545		11,037
Long-Term Debt \| Revolving Term Debt
Disclosure of detailed information about borrowings [line items]
Revolving Term Debt	0		0
Long-Term Debt \| U.S. Dollar Denominated Unsecured Notes
Disclosure of detailed information about borrowings [line items]
Total Debt Principal, (CAD equivalent)	6,095	$ 4.3	5,887	$ 4.3
Long-Term Debt \| Canadian Dollar Unsecured Notes
Disclosure of detailed information about borrowings [line items]
Total Debt Principal, (CAD equivalent)	2,450		2,450
Long-Term Debt \| Term Loan Facility
Disclosure of detailed information about borrowings [line items]
Term Loan Facility	$ 0		$ 2,700