XML 137 R109.htm IDEA: XBRL DOCUMENT v3.25.1

Supplemental Disclosure of Cash Flow Information - Supplemental Schedule of Cash Flow Information (Details) - CAD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Changes in Non-Cash Working Capital [Abstract]
Accounts receivable	$ (940)	$ 368	$ (441)
Inventory	(616)	(219)	(266)
Prepaids and other	(42)	(23)	(20)
Accounts payable	(340)	78	537
Accrued liabilities	851	(812)	896
Current income tax (liabilities) assets	326	(1,558)	(282)
Other long-term liabilities	(106)	(200)	(196)
Net changes in non-cash working capital	(867)	(2,366)	228
Relating To [Abstract]
Operating activities	(743)	(2,417)	79
Investing activities	$ (124)	$ 51	$ 149

X

- Definition

Adjustments For Decrease (Increase) In Current Prepayments And Other Current Assets

+ References

No definition available.

+ Details

Name:	cnq_AdjustmentsForDecreaseIncreaseInCurrentPrepaymentsAndOtherCurrentAssets
Namespace Prefix:	cnq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Adjustments For Decrease (Increase) In Current Tax Assets

+ References

No definition available.

+ Details

Name:	cnq_AdjustmentsForDecreaseIncreaseInCurrentTaxAssets
Namespace Prefix:	cnq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Adjustments For Increase (Decrease) In Accrued Liabilities

+ References

No definition available.

+ Details

Name:	cnq_AdjustmentsForIncreaseDecreaseInAccruedLiabilities
Namespace Prefix:	cnq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Changes in Non-Cash Working Capital

+ References

No definition available.

+ Details

Name:	cnq_ChangesInNonCashWorkingCapitalAbstract
Namespace Prefix:	cnq_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Increase (Decrease) In Working Capital, Investing Activities

+ References

No definition available.

+ Details

Name:	cnq_IncreaseDecreaseInWorkingCapitalInvestingActivities
Namespace Prefix:	cnq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Increase (Decrease) In Working Capital, Operating Activities

+ References

No definition available.

+ Details

Name:	cnq_IncreaseDecreaseInWorkingCapitalOperatingActivities
Namespace Prefix:	cnq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Relating To

+ References

No definition available.

+ Details

Name:	cnq_RelatingToAbstract
Namespace Prefix:	cnq_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Adjustments for decrease (increase) in inventories to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Inventories; Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 20
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20_a&doctype=Standard
-URIDate 2024-03-27

+ Details

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

X

- Definition

Adjustments for decrease (increase) in trade accounts receivable to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 20
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20_a&doctype=Standard
-URIDate 2024-03-27

+ Details

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

X

- Definition

Adjustments for increase (decrease) in other liabilities to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Other liabilities; Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 20
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20&doctype=Standard
-URIDate 2024-03-27

+ Details

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

X

- Definition

Adjustments for increase (decrease) in trade and other payables to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Trade and other payables; Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 20
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20&doctype=Standard
-URIDate 2024-03-27

+ Details

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

X

- Definition

The increase (decrease) in working capital.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 20
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_IncreaseDecreaseInWorkingCapital
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration