XML 160 R117.htm IDEA: XBRL DOCUMENT v2.4.1.9
Supplemental Information On Oil And Gas Operations (Narrative) (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
MMBoe
Dec. 31, 2013
MMBoe
Dec. 31, 2012
MMBoe
Dec. 31, 2011
MMBoe
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Reserve Quantities [Line Items]              
Commitment to fund future costs for joint venture $ 250,000,000dvn_CommitmentToFundFutureCostsForJointVenture            
Capitalized general and administrative expenses 376,000,000dvn_CapitalizedGeneralAndAdministrativeExpenses 368,000,000dvn_CapitalizedGeneralAndAdministrativeExpenses 359,000,000dvn_CapitalizedGeneralAndAdministrativeExpenses        
Capitalized interest costs (70,000,000)us-gaap_InterestCostsCapitalized (56,000,000)us-gaap_InterestCostsCapitalized (48,000,000)us-gaap_InterestCostsCapitalized        
Proved undeveloped reserve (MMBoe) 689us-gaap_ProvedUndevelopedReserveBOE1 [1] 701us-gaap_ProvedUndevelopedReserveBOE1 [1] 840us-gaap_ProvedUndevelopedReserveBOE1 [1] 782us-gaap_ProvedUndevelopedReserveBOE1 [1]      
Increase (decrease) in proved undeveloped reserves (2.00%)dvn_IncreaseDecreaseInProvedUndevelopedReserves            
Percentage of total proved reserves 25.00%dvn_PercentageOfTotalProvedReserves            
Increase (decrease) in proved undeveloped reserves due to drilling and development activities (MMBoe) 161dvn_IncreaseDecreaseInProvedUndevelopedReservesDueToDrillingActivitiesEnergy            
Proved undeveloped reserves, conversion to proved developed reserves (MMBoe) 89dvn_ProvedUndevelopedReservesConversionToProvedDevelopedReservesEnergy            
Proved undeveloped reserves, revisions other than price (MMboe) (43)dvn_ProvedUndevelopedReservesRevisionsOtherThanPriceEnergy            
Proved undeveloped reserves to proved developed reserves, conversion, percentage 13.00%dvn_ProvedUndevelopedReservesToProvedDevelopedReservesConversionPercentage            
Proved developed and undeveloped reserves, revisions other than price (MMBoe) (65)us-gaap_ProvedDevelopedAndUndevelopedReserveRevisionOfPreviousEstimateEnergy [1] (88)us-gaap_ProvedDevelopedAndUndevelopedReserveRevisionOfPreviousEstimateEnergy [1] (68)us-gaap_ProvedDevelopedAndUndevelopedReserveRevisionOfPreviousEstimateEnergy [1]        
Cost incurred related to development and conversion 1,000,000,000dvn_CostIncurredRelatedToDevelopmentAndConversion            
Year development schedule will be complete 2031            
Proved developed and undeveloped reserves, revisions due to prices (MMboe) 9dvn_ProvedDevelopedAndUndevelopedReservesRevisionsDueToPricesEnergy [1] 94dvn_ProvedDevelopedAndUndevelopedReservesRevisionsDueToPricesEnergy [1] (171)dvn_ProvedDevelopedAndUndevelopedReservesRevisionsDueToPricesEnergy [1]        
Proved developed and undeveloped reserves, extension and discoveries (MMBoe) 211us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy [1] 261us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy [1] 449us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy [1]        
Proved developed and undeveloped reserves, extensions and discoveries related to additions from in fill drilling activities (MMBoe) 5dvn_ProvedDevelopedAndUndevelopedReservesExtensionsAndDiscoveriesRelatedToAdditionsFromInfillDrillingActivities 175dvn_ProvedDevelopedAndUndevelopedReservesExtensionsAndDiscoveriesRelatedToAdditionsFromInfillDrillingActivities 229dvn_ProvedDevelopedAndUndevelopedReservesExtensionsAndDiscoveriesRelatedToAdditionsFromInfillDrillingActivities        
Proved developed and undeveloped reserves, purchase of reserves (MMboe) 265us-gaap_ProvedDevelopedAndUndevelopedReservePurchaseOfMineralInPlaceEnergy [1] 1us-gaap_ProvedDevelopedAndUndevelopedReservePurchaseOfMineralInPlaceEnergy [1]          
Proved developed and undeveloped reserves, sale of reserves (MMBoe) (383)us-gaap_ProvedDevelopedAndUndevelopedReservesSaleOfMineralInPlaceEnergy [1] (15)us-gaap_ProvedDevelopedAndUndevelopedReservesSaleOfMineralInPlaceEnergy [1] (2)us-gaap_ProvedDevelopedAndUndevelopedReservesSaleOfMineralInPlaceEnergy [1]        
Oil and gas properties not subject to amortization 2,752,000,000us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization            
Average price per barrel of oil used to estimate proved oil reserves 87.14dvn_AveragePricePerBarrelOfOilUsedToEstimateProvedOilReserves            
Average price per barrel of bitumen used to estimate proved oil reserves 57.25dvn_AveragePricePerBarrelOfBitumenUsedToEstimateProvedOilReserves            
Average price per Mcf of gas used to estimated proved gas 3.94dvn_AveragePricePerMcfOfGasusedToEstimatedProvedGasReserves            
Average price per barrel of natural gas liquids used to estimate proved NGL reserves 25.05dvn_AveragePricePerBarrelOfNaturalGasLiquidsUsedToEstimateProvedNglReserves            
Future development costs 10,787,000,000us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts 10,756,000,000us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts 12,767,000,000us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts        
Future dismantlement, abandonment and rehabilitation costs 1,500,000,000dvn_FutureDismantlementAbandonmentAndRehabilitationCosts            
Forecast [Member]              
Reserve Quantities [Line Items]              
Future development costs         1,000,000,000us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember		 1,900,000,000us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember		 2,200,000,000us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
Jackfish [Member]              
Reserve Quantities [Line Items]              
Proved undeveloped reserve (MMBoe) 384us-gaap_ProvedUndevelopedReserveBOE1
/ us-gaap_StatementGeographicalAxis
= dvn_JackfishMember		 441us-gaap_ProvedUndevelopedReserveBOE1
/ us-gaap_StatementGeographicalAxis
= dvn_JackfishMember		          
Daily barrel facility capacity 35,000us-gaap_OilAndGasDeliveryCommitmentsAndContractsDailyProduction
/ us-gaap_StatementGeographicalAxis
= dvn_JackfishMember		            
Proved developed and undeveloped reserves, extension and discoveries (MMBoe) 8us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_JackfishMember		 38us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_JackfishMember		 67us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_JackfishMember		        
Proved developed and undeveloped reserves, extensions and discoveries related to additions from in fill drilling activities (MMBoe)   38dvn_ProvedDevelopedAndUndevelopedReservesExtensionsAndDiscoveriesRelatedToAdditionsFromInfillDrillingActivities
/ us-gaap_StatementGeographicalAxis
= dvn_JackfishMember		          
Barnett Shale [Member]              
Reserve Quantities [Line Items]              
Proved undeveloped reserves, revisions other than price (MMboe) (69)dvn_ProvedUndevelopedReservesRevisionsOtherThanPriceEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_BarnettShaleMember		            
Proved developed and undeveloped reserves, revisions due to prices (MMboe)   43dvn_ProvedDevelopedAndUndevelopedReservesRevisionsDueToPricesEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_BarnettShaleMember		 (100)dvn_ProvedDevelopedAndUndevelopedReservesRevisionsDueToPricesEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_BarnettShaleMember		        
Proved developed and undeveloped reserves, extension and discoveries (MMBoe) 36us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_BarnettShaleMember		 54us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_BarnettShaleMember		 95us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_BarnettShaleMember		        
Proved developed and undeveloped reserves, extensions and discoveries related to additions from in fill drilling activities (MMBoe)   54dvn_ProvedDevelopedAndUndevelopedReservesExtensionsAndDiscoveriesRelatedToAdditionsFromInfillDrillingActivities
/ us-gaap_StatementGeographicalAxis
= dvn_BarnettShaleMember		 82dvn_ProvedDevelopedAndUndevelopedReservesExtensionsAndDiscoveriesRelatedToAdditionsFromInfillDrillingActivities
/ us-gaap_StatementGeographicalAxis
= dvn_BarnettShaleMember		        
Anadarko Basin [Member]              
Reserve Quantities [Line Items]              
Proved developed and undeveloped reserves, extension and discoveries (MMBoe) 14us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_AnadarkoBasinMember		 42us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_AnadarkoBasinMember		          
Rocky Mountain [Member]              
Reserve Quantities [Line Items]              
Proved developed and undeveloped reserves, revisions due to prices (MMboe)   19dvn_ProvedDevelopedAndUndevelopedReservesRevisionsDueToPricesEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_RockyMountainMember		 (25)dvn_ProvedDevelopedAndUndevelopedReservesRevisionsDueToPricesEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_RockyMountainMember		        
Proved developed and undeveloped reserves, extension and discoveries (MMBoe)     16us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_RockyMountainMember		        
Granite Wash Area [Member]              
Reserve Quantities [Line Items]              
Proved developed and undeveloped reserves, extension and discoveries (MMBoe)     18us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_GraniteWashAreaMember		        
Cana-Woodford Shale [Member]              
Reserve Quantities [Line Items]              
Proved developed and undeveloped reserves, extension and discoveries (MMBoe)     151us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_CanaWoodfordShaleMember		        
Proved developed and undeveloped reserves, extensions and discoveries related to additions from in fill drilling activities (MMBoe)   23dvn_ProvedDevelopedAndUndevelopedReservesExtensionsAndDiscoveriesRelatedToAdditionsFromInfillDrillingActivities
/ us-gaap_StatementGeographicalAxis
= dvn_CanaWoodfordShaleMember		 134dvn_ProvedDevelopedAndUndevelopedReservesExtensionsAndDiscoveriesRelatedToAdditionsFromInfillDrillingActivities
/ us-gaap_StatementGeographicalAxis
= dvn_CanaWoodfordShaleMember		        
Permian Basin [Member]              
Reserve Quantities [Line Items]              
Proved developed and undeveloped reserves, extension and discoveries (MMBoe) 70us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_PermianBasinMember		 76us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_PermianBasinMember		 72us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_PermianBasinMember		        
Proved developed and undeveloped reserves, extensions and discoveries related to additions from in fill drilling activities (MMBoe) 4dvn_ProvedDevelopedAndUndevelopedReservesExtensionsAndDiscoveriesRelatedToAdditionsFromInfillDrillingActivities
/ us-gaap_StatementGeographicalAxis
= dvn_PermianBasinMember		 33dvn_ProvedDevelopedAndUndevelopedReservesExtensionsAndDiscoveriesRelatedToAdditionsFromInfillDrillingActivities
/ us-gaap_StatementGeographicalAxis
= dvn_PermianBasinMember		          
Eagle Ford [Member]              
Reserve Quantities [Line Items]              
Proved developed and undeveloped reserves, extension and discoveries (MMBoe) 54us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_EagleFordMember		            
Proved developed and undeveloped reserves, purchase of reserves (MMboe) 246us-gaap_ProvedDevelopedAndUndevelopedReservePurchaseOfMineralInPlaceEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_EagleFordMember		            
Eagle Ford [Member] | Minimum [Member]              
Reserve Quantities [Line Items]              
Years until development and evaluation will be complete 4 years            
Eagle Ford [Member] | Maximum [Member]              
Reserve Quantities [Line Items]              
Years until development and evaluation will be complete 5 years            
Mississippian-Woodford Trend [Member]              
Reserve Quantities [Line Items]              
Proved developed and undeveloped reserves, extension and discoveries (MMBoe) 14us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_MississippianWoodfordTrendMember		 32us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= dvn_MississippianWoodfordTrendMember		          
Proved developed and undeveloped reserves, extensions and discoveries related to additions from in fill drilling activities (MMBoe)   20dvn_ProvedDevelopedAndUndevelopedReservesExtensionsAndDiscoveriesRelatedToAdditionsFromInfillDrillingActivities
/ us-gaap_StatementGeographicalAxis
= dvn_MississippianWoodfordTrendMember		          
Pike Thermal And Eagle Ford [Member] | Costs Deemed For Individual Assessment [Member]              
Reserve Quantities [Line Items]              
Oil and gas properties not subject to amortization 2,200,000,000us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization
/ us-gaap_StatementGeographicalAxis
= dvn_PikeThermalAndEagleFordMember
/ us-gaap_StatementScenarioAxis
= dvn_CostsDeemedForIndividualAssessmentMember		            
United States [Member]              
Reserve Quantities [Line Items]              
Proved undeveloped reserve (MMBoe) 305us-gaap_ProvedUndevelopedReserveBOE1
/ us-gaap_StatementGeographicalAxis
= country_US		 [1] 258us-gaap_ProvedUndevelopedReserveBOE1
/ us-gaap_StatementGeographicalAxis
= country_US		 [1] 407us-gaap_ProvedUndevelopedReserveBOE1
/ us-gaap_StatementGeographicalAxis
= country_US		 [1] 403us-gaap_ProvedUndevelopedReserveBOE1
/ us-gaap_StatementGeographicalAxis
= country_US		 [1]      
Proved undeveloped reserves, conversion to proved developed reserves (MMBoe) 40dvn_ProvedUndevelopedReservesConversionToProvedDevelopedReservesEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		            
Proved undeveloped reserves, revisions other than price (MMboe) (61)dvn_ProvedUndevelopedReservesRevisionsOtherThanPriceEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		            
Proved developed and undeveloped reserves, revisions other than price (MMBoe) (86)us-gaap_ProvedDevelopedAndUndevelopedReserveRevisionOfPreviousEstimateEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		 [1] (117)us-gaap_ProvedDevelopedAndUndevelopedReserveRevisionOfPreviousEstimateEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		 [1] (67)us-gaap_ProvedDevelopedAndUndevelopedReserveRevisionOfPreviousEstimateEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		 [1]        
Proved developed and undeveloped reserves, revisions due to prices (MMboe) 38dvn_ProvedDevelopedAndUndevelopedReservesRevisionsDueToPricesEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		 [1] 76dvn_ProvedDevelopedAndUndevelopedReservesRevisionsDueToPricesEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		 [1] (159)dvn_ProvedDevelopedAndUndevelopedReservesRevisionsDueToPricesEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		 [1]        
Proved developed and undeveloped reserves, extension and discoveries (MMBoe) 197us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		 [1] 212us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		 [1] 367us-gaap_ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		 [1]        
Proved developed and undeveloped reserves, purchase of reserves (MMboe) 265us-gaap_ProvedDevelopedAndUndevelopedReservePurchaseOfMineralInPlaceEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		 [1] 1us-gaap_ProvedDevelopedAndUndevelopedReservePurchaseOfMineralInPlaceEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		 [1]          
Proved developed and undeveloped reserves, sale of reserves (MMBoe) (207)us-gaap_ProvedDevelopedAndUndevelopedReservesSaleOfMineralInPlaceEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		 [1] (14)us-gaap_ProvedDevelopedAndUndevelopedReservesSaleOfMineralInPlaceEnergy
/ us-gaap_StatementGeographicalAxis
= country_US		 [1]          
Future development costs 7,168,000,000us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts
/ us-gaap_StatementGeographicalAxis
= country_US		 5,448,000,000us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts
/ us-gaap_StatementGeographicalAxis
= country_US		 6,556,000,000us-gaap_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts
/ us-gaap_StatementGeographicalAxis
= country_US		        
Oil and Gas Properties [Member]              
Reserve Quantities [Line Items]              
Capitalized interest costs $ 45,000,000us-gaap_InterestCostsCapitalized
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OilAndGasPropertiesMember		 $ 42,000,000us-gaap_InterestCostsCapitalized
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OilAndGasPropertiesMember		 $ 36,000,000us-gaap_InterestCostsCapitalized
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OilAndGasPropertiesMember		        
[1] Gas reserves are converted to Boe at the rate of six Mcf per Bbl of oil, based upon the approximate relative energy content of gas and oil. This rate is not necessarily indicative of the relationship of natural gas and oil prices. Bitumen and natural gas liquids reserves are converted to Boe on a one-to-one basis with oil.