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Supplemental Information On Oil And Gas Operations (Oil And Gas Properties Not Subject To Amortization) (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items] |
Acquisition costs | $ 1,890 us-gaap_AcquisitionCosts
Exploration costs | 362 us-gaap_ExplorationCosts
Development costs | 341 us-gaap_DevelopmentCosts
Capitalized interest | 159 dvn_CapitalizedInterestPeriodCost
Total oil and gas properties not subject to amortization | 2,752 us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization
2014 [Member] |
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items] |
Acquisition costs | 973 us-gaap_AcquisitionCosts / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandFourteenMember
Exploration costs | 111 us-gaap_ExplorationCosts / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandFourteenMember
Development costs | 103 us-gaap_DevelopmentCosts / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandFourteenMember
Capitalized interest | 43 dvn_CapitalizedInterestPeriodCost / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandFourteenMember
Total oil and gas properties not subject to amortization | 1,230 us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandFourteenMember
2013 [Member] |
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items] |
Acquisition costs | 127 us-gaap_AcquisitionCosts / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandThirteenMember
Exploration costs | 76 us-gaap_ExplorationCosts / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandThirteenMember
Development costs | 48 us-gaap_DevelopmentCosts / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandThirteenMember
Capitalized interest | 38 dvn_CapitalizedInterestPeriodCost / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandThirteenMember
Total oil and gas properties not subject to amortization | 289 us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandThirteenMember
2012 [Member] |
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items] |
Acquisition costs | 140 us-gaap_AcquisitionCosts / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandTwelveMember
Exploration costs | 68 us-gaap_ExplorationCosts / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandTwelveMember
Development costs | 121 us-gaap_DevelopmentCosts / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandTwelveMember
Capitalized interest | 30 dvn_CapitalizedInterestPeriodCost / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandTwelveMember
Total oil and gas properties not subject to amortization | 359 us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization / us-gaap_CreationDateAxis = dvn_CostIncurredInTwoThousandTwelveMember
Cost Incurred Prior to 2012 [Member] |
Capitalized Costs of Unproved Properties Excluded from Amortization [Line Items] |
Acquisition costs | 650 us-gaap_AcquisitionCosts / us-gaap_CreationDateAxis = dvn_CostIncurredPriorToTwoThousandTwelveMember
Exploration costs | 107 us-gaap_ExplorationCosts / us-gaap_CreationDateAxis = dvn_CostIncurredPriorToTwoThousandTwelveMember
Development costs | 69 us-gaap_DevelopmentCosts / us-gaap_CreationDateAxis = dvn_CostIncurredPriorToTwoThousandTwelveMember
Capitalized interest | 48 dvn_CapitalizedInterestPeriodCost / us-gaap_CreationDateAxis = dvn_CostIncurredPriorToTwoThousandTwelveMember
Total oil and gas properties not subject to amortization | $ 874 us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization / us-gaap_CreationDateAxis = dvn_CostIncurredPriorToTwoThousandTwelveMember

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- Definition The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph c -Subparagraph 3(ii)(A) -Article 4 + Details
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- Definition The sum of the capitalized costs incurred during the period of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph c -Subparagraph 3(ii)(A) -Article 4 + Details
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- Definition The capitalized costs incurred during the period (excluded from amortization) to obtain access to proved reserves and to provide facilities for extracting, treating, gathering and storing the oil and gas. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph c -Subparagraph 3(ii)(A) -Article 4 + Details
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- Definition The capitalized costs incurred during the period (excluded from amortization) in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. Exploration costs also include costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, the maintenance of land and lease records, dry hole contributions and bottom hole contributions, costs of drilling and equipping exploratory wells and costs of drilling exploratory-type stratigraphic test wells. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=27015464&loc=d3e511914-122862 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph a -Subparagraph 15 -Article 4 + Details
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