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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

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- References No definition available. + Details
Name: | us-gaap_SupplementalCashFlowElementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration