Derivative Financial Instruments (Schedule Of Open Natural Gas Derivative Positions) (Details)	6 Months Ended
Jun. 30, 2025 MMBTU $ / Customer $ / MMBTU
FERC Henry Hub Price Swaps Natural Gas Q3-Q4 2025 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	273,500
Weighted Average Price Swap \| $ / MMBTU	3.45
Ferchenry Hub Price Swaps Natural Gas Q1-Q4 2026 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	247,500
Weighted Average Price Swap \| $ / MMBTU	3.8
FERC Henry Hub Price Collars Natural Gas Q3-Q4 2025 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	170,000
Weighted Average Floor Price \| $ / Customer	3
Weighted Average Ceiling Price \| $ / Customer	3.8
Ferchenry Hub Price Collars Natural Gas Q1-Q4 2026 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	160,000
Weighted Average Floor Price \| $ / Customer	3.14
Weighted Average Ceiling Price \| $ / Customer	4.88
Waha Natural Gas Basis Swaps Q1- Q4 2026 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	70,000
Weighted Average Differential To Henry Hub \| $ / MMBTU	(1.76)
Houston Ship Channel Natural Gas Basis Swap Q3 Q4 2025 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	230,000
Weighted Average Differential To Henry Hub \| $ / MMBTU	(0.35)
Waha Natural Gas Basis Swaps Q3-Q4 2025 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	200,000
Weighted Average Differential To Henry Hub \| $ / MMBTU	(1.53)
Houston Ship Channel Natural Gas Basis Swaps Q1-Q4 2026 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	50,000
Weighted Average Differential To Henry Hub \| $ / MMBTU	(0.29)

Weighted average differential to Henry Hub.

No definition available.

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- 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

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- 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

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- 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

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- Definition

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

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Data Type:	srt-types:perUnitItemType
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- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_FERCHenryHubPriceSwapsNaturalGasQ3-Q42025Member
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- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_FercHenryHubPriceSwapsNaturalGasQ1Q42026Member
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- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_FERCHenryHubPriceCollarsNaturalGasQ3-Q42025Member
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- Details

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- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_WahaNaturalGasBasisSwapQ1-Q42026Member
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- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_HoustonShipChannelNaturalGasBasisSwapQ3Q42025Member
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- Details

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- Details

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