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Derivative Financial Instruments (Schedule Of Open Interest Rate Swap Derivative Positions) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014
Interest Rate Contract Expiration December 2016 [Member] |
Derivative [Line Items] |
Notional | $ 100 invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = dvn_InterestRateContractExpirationDecemberTwoThousandSixteenMember
Rate Received | Three Month LIBOR
Rate Paid | 0.92%
Expiration | Dec. 01, 2016
Interest Rate Contract Expiration January 2019 [Member] |
Derivative [Line Items] |
Notional | $ 100 invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = dvn_InterestRateContractExpirationJanuaryTwoThousandNinteenMember
Rate Received | 1.76%
Rate Paid | Three Month LIBOR
Expiration | Jan. 01, 2019

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- Definition Derivative, Description of Rate Received. + References No definition available. + Details
Name: | dvn_DerivativeDescriptionOfRateReceived
Namespace Prefix: | dvn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Derivative Variable Rate Paid. + References No definition available. + Details
Name: | dvn_DerivativeVariableRatePaid
Namespace Prefix: | dvn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

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

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- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DerivativeMaturityDates
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=dvn_InterestRateContractExpirationDecemberTwoThousandSixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=dvn_InterestRateContractExpirationJanuaryTwoThousandNinteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |