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Derivative Financial Instruments (Schedule Of Open Natural Gas Derivative Positions) (Details)	12 Months Ended
	Dec. 31, 2014 MMBTU
FERC Henry Hub Price Swaps Natural Gas Q1- Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	250,000us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure / us-gaap_DerivativeInstrumentRiskAxis = dvn_FercHenryHubPriceSwapNaturalGas2015Member
Weighted Average Price Swap	4.32us-gaap_DerivativeSwapTypeAverageFixedPrice / us-gaap_DerivativeInstrumentRiskAxis = dvn_FercHenryHubPriceSwapNaturalGas2015Member
FERC Henry Hub Price Collars Natural Gas Q1- Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	328,452us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure / us-gaap_DerivativeInstrumentRiskAxis = dvn_FercHenryHubPriceCollarNaturalGas2015Member
Weighted Average Floor Price	4.05us-gaap_DerivativeAverageFloorPrice / us-gaap_DerivativeInstrumentRiskAxis = dvn_FercHenryHubPriceCollarNaturalGas2015Member
Weighted Average Ceiling Price	4.36us-gaap_DerivativeAverageCapPrice / us-gaap_DerivativeInstrumentRiskAxis = dvn_FercHenryHubPriceCollarNaturalGas2015Member
FERC Henry Hub Call Options Sold Natural Gas Q1- Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	550,000us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure / us-gaap_DerivativeInstrumentRiskAxis = dvn_FercHenryHubCallOptionsNaturalGas2015Member
Weighted Average Call Option Sold Price	5.09us-gaap_DerivativeAveragePriceRiskOptionStrikePrice / us-gaap_DerivativeInstrumentRiskAxis = dvn_FercHenryHubCallOptionsNaturalGas2015Member
FERC Henry Hub Call Options Sold Natural Gas Q1- Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	400,000us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure / us-gaap_DerivativeInstrumentRiskAxis = dvn_FercHenryHubCallOptionsNaturalGas2016Member
Weighted Average Call Option Sold Price	5.00us-gaap_DerivativeAveragePriceRiskOptionStrikePrice / us-gaap_DerivativeInstrumentRiskAxis = dvn_FercHenryHubCallOptionsNaturalGas2016Member
PEPL Basis Swaps Natural Gas Q1 - Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	100,000us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure / us-gaap_DerivativeInstrumentRiskAxis = dvn_PeplBasisSwapsNaturalGasQuarterOneThroughQuarterFour2015Member
Weighted Average Differential To Henry Hub	(0.28)dvn_WeightedAverageDifferentialToHenryHub / us-gaap_DerivativeInstrumentRiskAxis = dvn_PeplBasisSwapsNaturalGasQuarterOneThroughQuarterFour2015Member
El Paso Natural Gas Basis Swaps Natural Gas Q1 - Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	70,000us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure / us-gaap_DerivativeInstrumentRiskAxis = dvn_ElPasoNaturalGasBasisSwapsNaturalGasQuarterOneThroughQuarterFour2015Member
Weighted Average Differential To Henry Hub	(0.11)dvn_WeightedAverageDifferentialToHenryHub / us-gaap_DerivativeInstrumentRiskAxis = dvn_ElPasoNaturalGasBasisSwapsNaturalGasQuarterOneThroughQuarterFour2015Member
Houston Ship Channel Natural Gas Basis Swaps Natural Gas Q1 - Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	200,000us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure / us-gaap_DerivativeInstrumentRiskAxis = dvn_HoustonShipChannelNaturalGasBasisSwapsNaturalGasQuarterOneThroughQuarterFour2015Member
Weighted Average Differential To Henry Hub	0.01dvn_WeightedAverageDifferentialToHenryHub / us-gaap_DerivativeInstrumentRiskAxis = dvn_HoustonShipChannelNaturalGasBasisSwapsNaturalGasQuarterOneThroughQuarterFour2015Member
PEPL Basis Swaps Natural Gas Q1 - Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	30,000us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure / us-gaap_DerivativeInstrumentRiskAxis = dvn_PeplBasisSwapsNaturalGasQuarterOneThroughQuarterFour2016Member
Weighted Average Differential To Henry Hub	(0.33)dvn_WeightedAverageDifferentialToHenryHub / us-gaap_DerivativeInstrumentRiskAxis = dvn_PeplBasisSwapsNaturalGasQuarterOneThroughQuarterFour2016Member
El Paso Natural Gas Basis Swaps Natural Gas Q1- Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	15,000us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure / us-gaap_DerivativeInstrumentRiskAxis = dvn_ElPasoNaturalGasBasisSwapsNaturalGasQuarterOneThroughQuarterFour2016Member
Weighted Average Differential To Henry Hub	(0.13)dvn_WeightedAverageDifferentialToHenryHub / us-gaap_DerivativeInstrumentRiskAxis = dvn_ElPasoNaturalGasBasisSwapsNaturalGasQuarterOneThroughQuarterFour2016Member
Houston Ship Channel Natural Gas Basis Swaps Natural Gas Q1 - Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	30,000us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure / us-gaap_DerivativeInstrumentRiskAxis = dvn_HoustonShipChannelNaturalGasBasisSwapsNaturalGasQuarterOneThroughQuarterFour2016Member
Weighted Average Differential To Henry Hub	0.11dvn_WeightedAverageDifferentialToHenryHub / us-gaap_DerivativeInstrumentRiskAxis = dvn_HoustonShipChannelNaturalGasBasisSwapsNaturalGasQuarterOneThroughQuarterFour2016Member

X

- Definition

Weighted Average Differential To Henry Hub

+ References

No definition available.

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X

- 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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X

- 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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X

- Definition

The average strike price on the group of price risk option contracts such as put options or call options.

+ References

No definition available.

+ Details

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X

- Definition

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

+ References

No definition available.

+ Details

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- Details

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- Definition

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

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_FercHenryHubPriceCollarNaturalGas2015Member
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- Details

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