XML 139 R109.htm IDEA: XBRL DOCUMENT v3.24.1

Supplementary Oil And Gas Information (Unaudited) - Twelve Month Average Benchmark Prices (Details)	12 Months Ended
	Dec. 31, 2023 $ / bbl $ / bbl $ / MMBTU $ / MMBTU	Dec. 31, 2022 $ / bbl $ / MMBTU $ / bbl $ / MMBTU
USD
Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Line Items]
Average foreign exchange rate	0.7407	0.7709
Natural Gas | Henry Hub
Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Line Items]
Twelve month average benchmark price dollars per MMBtu | $ / MMBTU	2.75	6.44
Natural Gas | AECO
Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Line Items]
Twelve month average benchmark price dollars per MMBtu | $ / MMBTU	2.79	5.59
Natural Gas | BC Westcoast Station 2
Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Line Items]
Twelve month average benchmark price dollars per MMBtu | $ / MMBTU	2.10	4.51
WTI | Crude Oil and NGLs
Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Line Items]
Twelve month average benchmark price dollars per bbl	78.10	94.13
WCS | Crude Oil and NGLs
Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Line Items]
Twelve month average benchmark price dollars per bbl	79.95	99.4
Canadian Light Sweet | Crude Oil and NGLs
Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Line Items]
Twelve month average benchmark price dollars per bbl	100.93	118.9
Cromer LSB | Crude Oil and NGLs
Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Line Items]
Twelve month average benchmark price dollars per bbl	99.48	117.76
Brent | Crude Oil and NGLs
Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Line Items]
Twelve month average benchmark price dollars per bbl	82.51	97.98
Edmonton C5+ | Crude Oil and NGLs
Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Line Items]
Twelve month average benchmark price dollars per bbl	103.43	119.93

X

- Definition

[Line Items] for Oil And Gas, Average Sale Price And Production Cost Per Unit1 [Table]

+ References

No definition available.

+ Details

Name:	cnq_OilAndGasAverageSalePriceAndProductionCostPerUnit1LineItems
Namespace Prefix:	cnq_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Twelve Month Average Benchmark Price (Dollars Per Bbl)

+ References

No definition available.

+ Details

Name:	cnq_TwelveMonthAverageBenchmarkPriceDollarsPerBbl
Namespace Prefix:	cnq_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Twelve Month Average Benchmark Price (Dollars Per MMBtu)

+ References

No definition available.

+ Details

Name:	cnq_TwelveMonthAverageBenchmarkPriceDollarsPerMMBtu
Namespace Prefix:	cnq_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The average exchange rate used by the entity. Exchange rate is the ratio of exchange for two currencies.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_AverageForeignExchangeRate
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_CurrencyAxis=currency_USD
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ReserveQuantitiesByTypeOfReserveAxis=srt_NaturalGasReservesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	cnq_NaturalGasHubAxis=cnq_HenryHubLouisianaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	cnq_NaturalGasHubAxis=cnq_AlbertaNaturalGasReferenceLocationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	cnq_NaturalGasHubAxis=cnq_BritishColumbiaWestcoastStation2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	cnq_CrudeOilGradeAxis=cnq_WestTexasIntermediateCushingOklahomaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ReserveQuantitiesByTypeOfReserveAxis=srt_OilReservesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	cnq_CrudeOilGradeAxis=cnq_WesternCanadianSelectMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	cnq_CrudeOilGradeAxis=cnq_CanadianLightSweetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	cnq_CrudeOilGradeAxis=cnq_CromerLightSourBlendMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	cnq_CrudeOilGradeAxis=cnq_NorthSeaBrentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	cnq_CrudeOilGradeAxis=cnq_EdmontonC5PlusCondensateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: