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Supplemental Information to Statements Of Cash Flows (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Supplemental Cash Flow Elements [Abstract]
Accrued capital expenditures	$ 348	$ 413	$ 205
Non-Cash Investing Activities Contributions Of Other Propoerty And Equipment	$ 150

X

- Definition

Accrued capital expenditures.

+ References

No definition available.

+ Details

Name:	dvn_AccruedCapitalExpenditures
Namespace Prefix:	dvn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Non-Cash Investing Activities Contributions Of Other Propoerty And Equipment

+ References

No definition available.

+ Details

Name:	dvn_NonCashInvestingActivitiesContributionsOfOtherPropoertyAndEquipment
Namespace Prefix:	dvn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_SupplementalCashFlowElementsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration