XML 128 R98.htm IDEA: XBRL DOCUMENT v3.24.1

Financial Instruments - Financial Instrument Sensitivities (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 CAD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 CAD ($)
Interest rate risk
Disclosure of detailed information about financial instruments [line items]
Increase interest rate 1%	1.00%	1.00%
Decrease interest rate 1%	1.00%	1.00%
Increase (decrease) to net earnings	$ (5)		$ (4)
Increase (decrease) to net earnings	5		4
Increase (decrease) to other comprehensive income	0		0
Increase (decrease) to other comprehensive income	0		0
Currency risk
Disclosure of detailed information about financial instruments [line items]
Weakening of the Canadian dollar by US$0.01		$ 0.01
Strengthening of the Canadian dollar by US$0.01		$ 0.01
Increase (decrease) to net earnings	(128)		(135)
Increase (decrease) to net earnings	125		131
Increase (decrease) to other comprehensive income	0		0
Increase (decrease) to other comprehensive income	$ 0		$ 0

X

- Definition

Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Decrease In Risk Variable, Dollar Amount. Positive value indicates an increase; negative value indicates a decrease.

+ References

No definition available.

+ Details

Name:	cnq_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariableDollarAmount
Namespace Prefix:	cnq_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Decrease In Risk Variable, Impact On Net Profit (Loss)

+ References

No definition available.

+ Details

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

X

- Definition

Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Decrease In Risk Variable, Impact On Other Comprehensive Income (Loss)

+ References

No definition available.

+ Details

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

X

- Definition

Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Decrease In Risk Variable, Percent

+ References

No definition available.

+ Details

Name:	cnq_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleDecreaseInRiskVariablePercent
Namespace Prefix:	cnq_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Dollar Amount. Positive value indicates an increase; negative value indicates a decrease.

+ References

No definition available.

+ Details

Name:	cnq_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariableDollarAmount
Namespace Prefix:	cnq_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Impact On Net Profit (Loss)

+ References

No definition available.

+ Details

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

X

- Definition

Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Impact On Other Comprehensive Income (Loss)

+ References

No definition available.

+ Details

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

X

- Definition

Sensitivity Analysis For Types Of Market Risk, Reasonably Possible Increase In Risk Variable, Percent

+ References

No definition available.

+ Details

Name:	cnq_SensitivityAnalysisForTypesOfMarketRiskReasonablyPossibleIncreaseInRiskVariablePercent
Namespace Prefix:	cnq_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

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.

+ Details

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

X

- Details

Name:	ifrs-full_TypesOfRisksAxis=ifrs-full_InterestRateRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfRisksAxis=ifrs-full_CurrencyRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: