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Acquisitions And Divestitures (Schedule Of Purchase Price Allocation For General Partner) (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Mar. 07, 2014
--- | --- | --- | --- | ---
Assets acquired: |  |  |  |  |
Goodwill | $ 6,303 us-gaap_Goodwill | $ 5,858 us-gaap_Goodwill | $ 6,079 us-gaap_Goodwill |  |
General Partner [Member] |  |  |  |  |
Assets acquired: |  |  |  |  |
Current assets |  |  |  | 437 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets / us-gaap_BusinessAcquisitionAxis = us-gaap_GeneralPartnerMember |
Property, plant and equipment, net |  |  |  | 2,438 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = us-gaap_GeneralPartnerMember |
Intangible assets |  |  |  | 569 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill / us-gaap_BusinessAcquisitionAxis = us-gaap_GeneralPartnerMember |
Equity investment |  |  |  | 222 dvn_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquityMethodInvestment / us-gaap_BusinessAcquisitionAxis = us-gaap_GeneralPartnerMember |
Goodwill |  |  |  | 3,283 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = us-gaap_GeneralPartnerMember | [1]
Other long-term assets |  |  |  | 1 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets / us-gaap_BusinessAcquisitionAxis = us-gaap_GeneralPartnerMember |
Liabilities assumed: |  |  |  |  |
Current liabilities |  |  |  | (515)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities / us-gaap_BusinessAcquisitionAxis = us-gaap_GeneralPartnerMember |
Long-term debt |  |  |  | (1,454)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt / us-gaap_BusinessAcquisitionAxis = us-gaap_GeneralPartnerMember |
Deferred income taxes |  |  |  | (210)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent / us-gaap_BusinessAcquisitionAxis = us-gaap_GeneralPartnerMember |
Other long-term liabilities |  |  |  | (101)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther / us-gaap_BusinessAcquisitionAxis = us-gaap_GeneralPartnerMember |
Total consideration and fair value of noncontrolling interests |  |  |  | $ 4,670 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = us-gaap_GeneralPartnerMember |
[1] | Goodwill is the excess of the consideration transferred over the net assets recognized and represents the future economic benefits arising from other assets acquired that could not be individually identified and separately recognized. Goodwill is not amortized and is not deductible for tax purposes.

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