XML 147 R117.htm IDEA: XBRL DOCUMENT v3.24.1

Supplementary Oil And Gas Information (Unaudited) - Future Net Cash Flows Relating to Proved Crude Oil and Natural Gas Reserves (Details) - CAD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Future cash inflows	$ 870,755	$ 995,482	$ 692,495
Future production costs	(279,014)	(305,959)	(244,036)
Future development costs and asset retirement obligations	(90,415)	(86,658)	(80,374)
Future income taxes	(113,057)	(137,288)	(83,144)
Future net cash flows	388,269	465,577	284,941
10% annual discount for timing of future cash flows	(279,533)	(328,579)	(202,157)
Standardized measure of future net cash flows	108,736	136,998	82,784	$ 27,511
North America
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Future cash inflows	863,544	986,672	679,123
Future production costs	(276,498)	(303,270)	(238,144)
Future development costs and asset retirement obligations	(86,615)	(83,803)	(77,375)
Future income taxes	(113,516)	(136,905)	(81,860)
Future net cash flows	386,915	462,694	281,744
10% annual discount for timing of future cash flows	(278,814)	(327,333)	(201,227)
Standardized measure of future net cash flows	108,101	135,361	80,517
North Sea
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Future cash inflows	1,067	1,506	7,791
Future production costs	(636)	(691)	(4,074)
Future development costs and asset retirement obligations	(1,873)	(1,416)	(1,857)
Future income taxes	967	517	(719)
Future net cash flows	(475)	(84)	1,141
10% annual discount for timing of future cash flows	168	84	(142)
Standardized measure of future net cash flows	(307)	0	999
Offshore Africa
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Future cash inflows	6,144	7,304	5,581
Future production costs	(1,880)	(1,998)	(1,818)
Future development costs and asset retirement obligations	(1,927)	(1,439)	(1,142)
Future income taxes	(508)	(900)	(565)
Future net cash flows	1,829	2,967	2,056
10% annual discount for timing of future cash flows	(887)	(1,330)	(788)
Standardized measure of future net cash flows	$ 942	$ 1,637	$ 1,268

X

- Definition

Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Development Costs and Asset Retirement Obligations

+ References

No definition available.

+ Details

Name:	cnq_FutureNetCashFlowsRelatingtoProvedOilandGasReservesDevelopmentCostsandAssetRetirementObligations
Namespace Prefix:	cnq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Form 20-F
-Section Item 18
-Subsection Instruction 2
-Publisher SEC

+ Details

Name:	srt_DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesLineItems
Namespace Prefix:	srt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of estimated future accumulated cash inflow from the sale of proved oil and gas reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Form 20-F
-Section Item 18
-Subsection Instruction 2
-Publisher SEC

+ Details

Name:	srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of estimated future accumulated cash outflow for income tax, based on the future income less future expense derived from production and sale of proved oil and gas reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Form 20-F
-Section Item 18
-Subsection Instruction 2
-Publisher SEC

+ Details

Name:	srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount, after future accumulated cash outflow for development and production costs and future income tax, of estimated future accumulated cash inflow from the sale of proved oil and gas reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Form 20-F
-Section Item 18
-Subsection Instruction 2
-Publisher SEC

+ Details

Name:	srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of estimated future accumulated cash outflow for costs to be incurred in producing proved oil and gas reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Form 20-F
-Section Item 18
-Subsection Instruction 2
-Publisher SEC

+ Details

Name:	srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of discount on future accumulated cash inflow, after deducting future accumulated cash outflow for development and production costs and future income tax, from sale of proved oil and gas reserves, using a discount rate of 10 percent a year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Form 20-F
-Section Item 18
-Subsection Instruction 2
-Publisher SEC

+ Details

Name:	srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of discounted future accumulated cash inflow relating to proved oil and gas reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Form 20-F
-Section Item 18
-Subsection Instruction 2
-Publisher SEC

+ Details

Name:	srt_StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=srt_NorthAmericaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=cnq_NorthSeaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=cnq_OffshoreAfricaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: