XML 102 R31.htm IDEA: XBRL DOCUMENT v3.20.1

Events Subsequent to December 31, 2019	12 Months Ended
	Dec. 31, 2019
Disclosure of events after reporting period [Abstract]
Events Subsequent to December 31, 2019	Events Subsequent to December 31, 2019 Subsequent to December 31, 2019, crude oil benchmark prices decreased substantially due to a drop in global crude oil demand triggered by the impact of the COVID-19 virus on the global economy. In March 2020, crude oil prices decreased further due to a breakdown in negotiations between OPEC and non-OPEC partners regarding proposed production cuts. The recent volatility in the crude oil pricing environment may continue and could impact the Company’s earnings and cash flows.

X

- Definition

Disclosure of events after reporting period [Abstract]

+ References

No definition available.

+ Details

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

X

- Definition

The entire disclosure for events after the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 10
-IssueDate 2019-01-01
-Section Disclosure
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=10&code=ifrs-tx-2019-en-r&doctype=Standard&dita_xref=IAS10_g17-22_TI
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory
Namespace Prefix:	ifrs-full_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration