Derivative Financial Instruments (Schedule Of Open Natural Gas Derivative Positions) (Details)	9 Months Ended
Sep. 30, 2023 MMBTU $ / MMBTU
FERC Henry Hub Price Swaps Natural Gas Q4 2023 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d) \| MMBTU	161,000
Weighted Average Price Swap	3.36
FERC Henry Hub Price Swaps Natural Gas Q1-Q4 2024 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d) \| MMBTU	147,426
FERC Henry Hub Price Swaps Natural Gas Q1-Q4 2025 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d) \| MMBTU	13,068
Weighted Average Price Swap	3.49
FERC Henry Hub Price Collars Natural Gas Q4 2023 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d) \| MMBTU	147,000
Weighted Average Floor Price	3.67
Weighted Average Ceiling Price	7.62
FERC Henry Hub Price Collars Natural Gas Q1-Q4 2024 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d) \| MMBTU	40,527
Weighted Average Price Swap	3.37
Weighted Average Floor Price	3.78
Weighted Average Ceiling Price	7.05
El Paso Natural Gas Basis Swaps Q4 2023 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d) \| MMBTU	145,000
Weighted Average Differential To Henry Hub	(1.58)
EI Paso Natural Gas Basis Swaps Q1-Q4 2024 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d) \| MMBTU	34,863
Weighted Average Differential To Henry Hub	(0.91)
Houston Ship Channel Natural Gas Basis Swaps Q4 2023 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d) \| MMBTU	140,000
Weighted Average Differential To Henry Hub	(0.19)
Houston Ship Channel Natural Gas Basis Swaps Q1-Q4 2023 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d) \| MMBTU	110,000
Weighted Average Differential To Henry Hub	(0.24)
WAHA Natural Gas Basis Swaps Q4 2023 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d) \| MMBTU	70,000
Weighted Average Differential To Henry Hub	(0.51)
WAHA Natural Gas Basis Swaps Q1-Q4 2024 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d) \| MMBTU	44,973
Weighted Average Differential To Henry Hub	(0.58)

Weighted average differential to Henry Hub.

No definition available.

Name:	dvn_WeightedAverageDifferentialToHenryHub
Namespace Prefix:	dvn_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	duration

- Definition

The average cap rate on a group of price risk derivatives such as caps or collars. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeAverageCapPrice
Namespace Prefix:	us-gaap_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

The average floor rate on a group of price risk derivatives such as floors or collars. A payment or receipt is triggered if the market rate falls below the floor rate on the contract.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeAverageFloorPrice
Namespace Prefix:	us-gaap_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- 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
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480237/815-40-50-5

+ Details

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

- Definition

Nominal energy measure used to calculate payments on a derivative instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:energyItemType
Balance Type:	na
Period Type:	duration

- Definition

Average fixed price related to the group of price risk swap derivatives.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeSwapTypeAverageFixedPrice
Namespace Prefix:	us-gaap_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_FERCHenryHubPriceSwapsNaturalGasQ42023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_FercHenryHubPriceSwapsNaturalGasQ1Q42024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_FercHenryHubPriceSwapsNaturalGasQ1Q42025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_FERCHenryHubPriceCollarsNaturalGasQ42023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_FercHenryHubPriceCollarsNaturalGasQ1Q42024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_ElPasoNaturalGasBasisSwapsQ42023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_ELPasoNaturalGasBasisSwapQ1Q42024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_HoustonShipChannelNaturalGasBasisSwapsQ42023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_HoustonShipChannelNaturalGasBasisSwapQ1Q42023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_WAHANaturalGasBasisSwapsQ42023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_WAHANaturalGasBasisSwapsQ1Q42024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: