Derivative Financial Instruments (Schedule Of Open Natural Gas Derivative Positions) (Details)	3 Months Ended
Mar. 31, 2015 MMBTU
FERC Henry Hub Price Swaps Natural Gas Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	250,000
Weighted Average Price Swap	4.32
FERC Henry Hub Price Collars Natural Gas Quarter Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	391,964
Weighted Average Floor Price	3.74
Weighted Average Ceiling Price	4.04
FERC Henry Hub Call Options Sold Natural Gas Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	550,000
Weighted Average Call Option Sold Price	5.09
FERC Henry Hub Price Swaps Natural Gas Q1-Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)
Weighted Average Price Swap
FERC Henry Hub Price Collars Natural Gas Q1-Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)
Weighted Average Floor Price
Weighted Average Ceiling Price
FERC Henry Hub Call Options Sold Natural Gas Q1-Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	400,000
Weighted Average Call Option Sold Price	5.00
PEPL Basis Swaps Natural Gas Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	100,000
Weighted Average Differential To Henry Hub	(0.28)
El Paso Natural Gas Basis Swaps Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	70,000
Weighted Average Differential To Henry Hub	(0.11)
Houston Ship Channel Natural Gas Basis Swaps Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	200,000
Weighted Average Differential To Henry Hub	0.01
PEPL Basis Swaps Natural Gas Q1-Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	40,000
Weighted Average Differential To Henry Hub	(0.33)
El Paso Natural Gas Basis Swaps Q1-Q4 2016 [Member
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	15,000
Weighted Average Differential To Henry Hub	(0.13)
Houston Ship Channel Natural Gas Basis Swaps Q1-Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	30,000
Weighted Average Differential To Henry Hub	0.11

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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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

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Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- 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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- 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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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:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_ElPasoNaturalGasBasisSwapsQuarterOneThroughQuarterFour2016Member
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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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- Details

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- Details

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- Details

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- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_HoustonShipChannelNaturalGasBasisSwapsQuarterTwoThroughQuarterFour2015Member
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- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_PeplBasisSwapsNaturalGasQuarterOneThroughQuarterFour2016Member
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- Details

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