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Acquisitions And Divestitures (Purchase Price Allocation Of EnLink's Acquisitions And Dropdown Activity ) (Details) (USD $)
In Millions, unless otherwise specified
0 Months Ended 1 Months Ended
Jan. 31, 2015
Feb. 17, 2015
Mar. 16, 2015
Mar. 31, 2015
Feb. 28, 2015
Dec. 31, 2014
Business Acquisition [Line Items]            
Goodwill       $ 6,328us-gaap_Goodwill   $ 6,303us-gaap_Goodwill
EnLink [Member] | LPC Crude Oil Marketing LLC [Member]            
Business Acquisition [Line Items]            
Cash 100us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= dvn_LpcCrudeOilMarketingLlcMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
         
PP&E 29us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= dvn_LpcCrudeOilMarketingLlcMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
         
Goodwill 25us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= dvn_LpcCrudeOilMarketingLlcMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
         
Intangibles 49us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= dvn_LpcCrudeOilMarketingLlcMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
         
Deferred income taxes (3)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent
/ us-gaap_BusinessAcquisitionAxis
= dvn_LpcCrudeOilMarketingLlcMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
         
EnLink [Member] | General Partner [Member]            
Business Acquisition [Line Items]            
EnLink units   925us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_GeneralPartnerMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
       
EnLink [Member] | Coronado Midstream Holdings LLC [Member]            
Business Acquisition [Line Items]            
Cash     242us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= dvn_CoronadoMidstreamHoldingsLlcMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
     
EnLink units     360us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
/ us-gaap_BusinessAcquisitionAxis
= dvn_CoronadoMidstreamHoldingsLlcMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
360us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
/ us-gaap_BusinessAcquisitionAxis
= dvn_CoronadoMidstreamHoldingsLlcMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
   
PP&E     306us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= dvn_CoronadoMidstreamHoldingsLlcMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
     
Intangibles     294us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= dvn_CoronadoMidstreamHoldingsLlcMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
     
Other current assets     2us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther
/ us-gaap_BusinessAcquisitionAxis
= dvn_CoronadoMidstreamHoldingsLlcMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
     
EnLink [Member] | EnLink Midstream Holdings [Member]            
Business Acquisition [Line Items]            
EnLink units         $ 925us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
/ us-gaap_BusinessAcquisitionAxis
= dvn_EnlinkMidstreamHoldingsMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
 
EMH Ownership Interest   25.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= dvn_EnlinkMidstreamHoldingsMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
    25.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
/ us-gaap_BusinessAcquisitionAxis
= dvn_EnlinkMidstreamHoldingsMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember