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Derivative Financial Instruments (Schedule Of Open Oil Derivative Positions) (Details)	12 Months Ended
	Dec. 31, 2014 bbl
NYMEX West Texas Intermediate Price Swaps Oil Q1 - Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	107,203us-gaap_DerivativeNonmonetaryNotionalAmountVolume / us-gaap_DerivativeInstrumentRiskAxis = dvn_NymexWestTexasIntermediatePriceSwapOil2015Member
Weighted Average Price Swap	91.07us-gaap_DerivativeSwapTypeAverageFixedPrice / us-gaap_DerivativeInstrumentRiskAxis = dvn_NymexWestTexasIntermediatePriceSwapOil2015Member
NYMEX West Texas Intermediate Price Collars Oil Q1 - Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	31,500us-gaap_DerivativeNonmonetaryNotionalAmountVolume / us-gaap_DerivativeInstrumentRiskAxis = dvn_NymexWestTexasIntermediatePriceCollarOil2015Member
Weighted Average Floor Price	89.67us-gaap_DerivativeAverageFloorPrice / us-gaap_DerivativeInstrumentRiskAxis = dvn_NymexWestTexasIntermediatePriceCollarOil2015Member
Weighted Average Ceiling Price	97.84us-gaap_DerivativeAverageCapPrice / us-gaap_DerivativeInstrumentRiskAxis = dvn_NymexWestTexasIntermediatePriceCollarOil2015Member
NYMEX West Texas Intermediate Call Options Sold Oil Q1 - Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	28,000us-gaap_DerivativeNonmonetaryNotionalAmountVolume / us-gaap_DerivativeInstrumentRiskAxis = dvn_NymexWestTexasIntermediateCallOptionOil2015Member
Weighted Average Call Option Sold Price	116.43us-gaap_DerivativeAveragePriceRiskOptionStrikePrice / us-gaap_DerivativeInstrumentRiskAxis = dvn_NymexWestTexasIntermediateCallOptionOil2015Member
NYMEX West Texas Intermediate Call Options Sold Oil Q1 - Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	18,500us-gaap_DerivativeNonmonetaryNotionalAmountVolume / us-gaap_DerivativeInstrumentRiskAxis = dvn_NymexWestTexasIntermediateCallOptionOil2016Member
Weighted Average Call Option Sold Price	103.11us-gaap_DerivativeAveragePriceRiskOptionStrikePrice / us-gaap_DerivativeInstrumentRiskAxis = dvn_NymexWestTexasIntermediateCallOptionOil2016Member
Western Canadian Select Basis Swaps Oil Q1 - Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	22,514us-gaap_DerivativeNonmonetaryNotionalAmountVolume / us-gaap_DerivativeInstrumentRiskAxis = dvn_WesternCanadianSelectBasisSwapsOilQuarterOneThroughQuarterFour2015Member
Weighted Average Differential To WTI	(18.35)dvn_WeightedAverageDifferentialToWTI / us-gaap_DerivativeInstrumentRiskAxis = dvn_WesternCanadianSelectBasisSwapsOilQuarterOneThroughQuarterFour2015Member
West Texas Sour Basis Swaps Oil Q1 - Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	8,000us-gaap_DerivativeNonmonetaryNotionalAmountVolume / us-gaap_DerivativeInstrumentRiskAxis = dvn_WestTexasSourBasisSwapsOilQuarterOneThroughQuarterFour2015Member
Weighted Average Differential To WTI	(3.68)dvn_WeightedAverageDifferentialToWTI / us-gaap_DerivativeInstrumentRiskAxis = dvn_WestTexasSourBasisSwapsOilQuarterOneThroughQuarterFour2015Member
Midland Sweet Basis Swaps Oil Q1 - Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	14,247us-gaap_DerivativeNonmonetaryNotionalAmountVolume / us-gaap_DerivativeInstrumentRiskAxis = dvn_MidlandSweetBasisSwapsOilQuarterOneThroughQuarterFour2015Member
Weighted Average Differential To WTI	(2.92)dvn_WeightedAverageDifferentialToWTI / us-gaap_DerivativeInstrumentRiskAxis = dvn_MidlandSweetBasisSwapsOilQuarterOneThroughQuarterFour2015Member

X

- Definition

Weighted Average Differential to W T I

+ References

No definition available.

+ Details

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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 volume used to calculate payments on a derivative instrument.

+ References

No definition available.

+ Details

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- Details

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Data Type:	xbrli:stringItemType
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X

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeSwapTypeAverageFixedPrice
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Data Type:	us-types:perUnitItemType
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- Details

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- Details

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- Details

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- Details

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- Details

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