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Debt (Schedule Of Debt Instruments) (Details) (USD $)
 3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Commercial Paper $ 948,000,000us-gaap_CommercialPaper $ 932,000,000us-gaap_CommercialPaper
Net (discount) premium on debentures and notes (18,000,000)us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet (18,000,000)us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
Total debt 11,749,000,000us-gaap_DebtLongtermAndShorttermCombinedAmount 11,262,000,000us-gaap_DebtLongtermAndShorttermCombinedAmount
Less amount classified as short-term debt 1,448,000,000us-gaap_DebtCurrent [1] 1,432,000,000us-gaap_DebtCurrent [1]
Long-term debt 10,301,000,000us-gaap_LongTermDebtNoncurrent 9,830,000,000us-gaap_LongTermDebtNoncurrent
Floating Rate due December 15, 2015 [Member]    
Debt Instrument [Line Items]    
Debt, maturity date Dec. 15, 2015  
Short-term debt 500,000,000us-gaap_ShortTermBorrowings
/ us-gaap_DebtInstrumentAxis
= dvn_FloatingRateDueDecemberFifteenthTwoThousandFifteenMember		 500,000,000us-gaap_ShortTermBorrowings
/ us-gaap_DebtInstrumentAxis
= dvn_FloatingRateDueDecemberFifteenthTwoThousandFifteenMember
Floating Rate Due December 15, 2016 [Member]    
Debt Instrument [Line Items]    
Debt, maturity date Dec. 15, 2016  
Long-term debt, gross 350,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_FloatingRateDueDecemberFifteenthTwoThousandSixteenMember		 350,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_FloatingRateDueDecemberFifteenthTwoThousandSixteenMember
8.25% Due July 1, 2018 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 8.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_EightPointTwoFivePercentDueJulyFirstTwoThousandAndEighteenMember		 8.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_EightPointTwoFivePercentDueJulyFirstTwoThousandAndEighteenMember
Debt, maturity date Jul. 01, 2018  
Long-term debt, gross 125,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_EightPointTwoFivePercentDueJulyFirstTwoThousandAndEighteenMember		 125,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_EightPointTwoFivePercentDueJulyFirstTwoThousandAndEighteenMember
2.25% Due December 15, 2018 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 2.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_TwoPointTwoFivePercentDueDecemberFifteenthTwoThousandEighteenMember		 2.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_TwoPointTwoFivePercentDueDecemberFifteenthTwoThousandEighteenMember
Debt, maturity date Dec. 15, 2018  
Long-term debt, gross 750,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_TwoPointTwoFivePercentDueDecemberFifteenthTwoThousandEighteenMember		 750,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_TwoPointTwoFivePercentDueDecemberFifteenthTwoThousandEighteenMember
6.30% Due January 15, 2019 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 6.30%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_SixPointThreeZeroPercentDueJanuaryFifteenthTwoThousandAndNineteenMember		 6.30%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_SixPointThreeZeroPercentDueJanuaryFifteenthTwoThousandAndNineteenMember
Debt, maturity date Jan. 15, 2019  
Long-term debt, gross 700,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_SixPointThreeZeroPercentDueJanuaryFifteenthTwoThousandAndNineteenMember		 700,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_SixPointThreeZeroPercentDueJanuaryFifteenthTwoThousandAndNineteenMember
4.00% Due July 15, 2021 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 4.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_FourPointZeroZeroPercentDueJulyFifteenthTwoThousandAndTwentyOneMember		 4.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_FourPointZeroZeroPercentDueJulyFifteenthTwoThousandAndTwentyOneMember
Debt, maturity date Jul. 15, 2021  
Long-term debt, gross 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_FourPointZeroZeroPercentDueJulyFifteenthTwoThousandAndTwentyOneMember		 500,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_FourPointZeroZeroPercentDueJulyFifteenthTwoThousandAndTwentyOneMember
3.25% due May 15, 2022 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 3.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_ThreePointTwoFivePercentDueMayFifteenthTwoThousandTwentyTwoMember		 3.25%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_ThreePointTwoFivePercentDueMayFifteenthTwoThousandTwentyTwoMember
Debt, maturity date May 15, 2022  
Long-term debt, gross 1,000,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_ThreePointTwoFivePercentDueMayFifteenthTwoThousandTwentyTwoMember		 1,000,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_ThreePointTwoFivePercentDueMayFifteenthTwoThousandTwentyTwoMember
7.50% due September 15, 2027 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 7.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointFiveZeroPercentDueSeptemberFifteenthTwoThousandAndTwentySevenMember		 7.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointFiveZeroPercentDueSeptemberFifteenthTwoThousandAndTwentySevenMember
Debt, maturity date Sep. 15, 2027  
Long-term debt, gross 150,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointFiveZeroPercentDueSeptemberFifteenthTwoThousandAndTwentySevenMember		 150,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointFiveZeroPercentDueSeptemberFifteenthTwoThousandAndTwentySevenMember
7.875% due September 30, 2031 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 7.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointEightSevenFivePercentDueSeptemberThirtiethTwoThousandAndThirtyOneMember		 7.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointEightSevenFivePercentDueSeptemberThirtiethTwoThousandAndThirtyOneMember
Debt, maturity date Sep. 30, 2031  
Long-term debt, gross 1,250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointEightSevenFivePercentDueSeptemberThirtiethTwoThousandAndThirtyOneMember		 1,250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointEightSevenFivePercentDueSeptemberThirtiethTwoThousandAndThirtyOneMember
7.95% due April 15, 2032 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 7.95%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointNineFivePercentDueAprilFifteenthTwoThousandAndThirtyTwoMember		 7.95%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointNineFivePercentDueAprilFifteenthTwoThousandAndThirtyTwoMember
Debt, maturity date Apr. 15, 2032  
Long-term debt, gross 1,000,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointNineFivePercentDueAprilFifteenthTwoThousandAndThirtyTwoMember		 1,000,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointNineFivePercentDueAprilFifteenthTwoThousandAndThirtyTwoMember
5.60% due July 15, 2041 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 5.60%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_FivePointSixZeroPercentDueJulyFifteenthTwoThousandAndFortyOneMember		 5.60%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_FivePointSixZeroPercentDueJulyFifteenthTwoThousandAndFortyOneMember
Debt, maturity date Jul. 15, 2041  
Long-term debt, gross 1,250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_FivePointSixZeroPercentDueJulyFifteenthTwoThousandAndFortyOneMember		 1,250,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_FivePointSixZeroPercentDueJulyFifteenthTwoThousandAndFortyOneMember
4.75% due May 15, 2042 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_FourPointSevenFivePercentDueMayFifteenthTwoThousandFortyTwoMember		 4.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_FourPointSevenFivePercentDueMayFifteenthTwoThousandFortyTwoMember
Debt, maturity date May 15, 2042  
Long-term debt, gross 750,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_FourPointSevenFivePercentDueMayFifteenthTwoThousandFortyTwoMember		 750,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_FourPointSevenFivePercentDueMayFifteenthTwoThousandFortyTwoMember
Devon [Member]    
Debt Instrument [Line Items]    
Total debt 9,255,000,000us-gaap_DebtLongtermAndShorttermCombinedAmount
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember		 9,239,000,000us-gaap_DebtLongtermAndShorttermCombinedAmount
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
EnLink [Member]    
Debt Instrument [Line Items]    
Credit facilities 709,000,000us-gaap_LineOfCredit
/ dei_LegalEntityAxis
= dvn_EnlinkMember		 237,000,000us-gaap_LineOfCredit
/ dei_LegalEntityAxis
= dvn_EnlinkMember
Net (discount) premium on debentures and notes 22,000,000us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
/ dei_LegalEntityAxis
= dvn_EnlinkMember		 23,000,000us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
/ dei_LegalEntityAxis
= dvn_EnlinkMember
Total debt 2,494,000,000us-gaap_DebtLongtermAndShorttermCombinedAmount
/ dei_LegalEntityAxis
= dvn_EnlinkMember		 2,023,000,000us-gaap_DebtLongtermAndShorttermCombinedAmount
/ dei_LegalEntityAxis
= dvn_EnlinkMember
EnLink [Member] | 2.70% due April 1, 2019 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 2.70%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_TwoPointSevenPercentDueAprilFirstTwoThousandAndNinteenMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember		 2.70%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_TwoPointSevenPercentDueAprilFirstTwoThousandAndNinteenMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
Debt, maturity date Apr. 01, 2019  
Long-term debt, gross 400,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_TwoPointSevenPercentDueAprilFirstTwoThousandAndNinteenMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember		 400,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_TwoPointSevenPercentDueAprilFirstTwoThousandAndNinteenMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
EnLink [Member] | 7.125% due June 1, 2022 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 7.125%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointOneTwoFivePercentDueJuneFirstTwoThousandAndTwentyTwoMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember		 7.125%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointOneTwoFivePercentDueJuneFirstTwoThousandAndTwentyTwoMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
Debt, maturity date Jun. 01, 2022  
Long-term debt, gross 163,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointOneTwoFivePercentDueJuneFirstTwoThousandAndTwentyTwoMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember		 163,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_SevenPointOneTwoFivePercentDueJuneFirstTwoThousandAndTwentyTwoMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
EnLink [Member] | 4.40% due April 1, 2024 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 4.40%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_FourPointFourZeroPercentDueAprilOneTwoThousandTwentyFourMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember		 4.40%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_FourPointFourZeroPercentDueAprilOneTwoThousandTwentyFourMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
Debt, maturity date Apr. 01, 2024  
Long-term debt, gross 550,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_FourPointFourZeroPercentDueAprilOneTwoThousandTwentyFourMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember		 550,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_FourPointFourZeroPercentDueAprilOneTwoThousandTwentyFourMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
EnLink [Member] | 5.60% due April 1, 2044 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 5.60%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_FivePointSixZeroPercentDueAprilOneTwoThousandAndFortyFourMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember		 5.60%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_FivePointSixZeroPercentDueAprilOneTwoThousandAndFortyFourMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
Debt, maturity date Apr. 01, 2044  
Long-term debt, gross 350,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_FivePointSixZeroPercentDueAprilOneTwoThousandAndFortyFourMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember		 350,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_FivePointSixZeroPercentDueAprilOneTwoThousandAndFortyFourMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
EnLink [Member] | 5.05% due April 1, 2045 [Member]    
Debt Instrument [Line Items]    
Debt interest rate, stated percentage 5.05%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_FivePointZeroFivePercentDueAprilOneTwoThousandAndFortyFiveMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember		 5.05%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= dvn_FivePointZeroFivePercentDueAprilOneTwoThousandAndFortyFiveMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
Debt, maturity date Apr. 01, 2045  
Long-term debt, gross $ 300,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_FivePointZeroFivePercentDueAprilOneTwoThousandAndFortyFiveMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember		 $ 300,000,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_DebtInstrumentAxis
= dvn_FivePointZeroFivePercentDueAprilOneTwoThousandAndFortyFiveMember
/ dei_LegalEntityAxis
= dvn_EnlinkMember
[1] Short-term debt as of March 31, 2015 consists of $948 million of commercial paper and $500 million floating rate due on December 15, 2015. Short-term debt as of December 31, 2014 consists of $932 million of commercial paper and $500 million floating rate due on December 15, 2015.