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Debt And Related Expenses (Narrative) (Details) (USD $) | 0 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended | 0 Months Ended |  |  |
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Nov. 13, 2014 | May 31, 2012 | Jul. 31, 2011 | Jan. 31, 2009 | Mar. 31, 2002 | Jun. 30, 2014 | Dec. 31, 2014 | Dec. 31, 2013 | Nov. 30, 2014 | Feb. 28, 2014 | Mar. 07, 2014 | Mar. 19, 2014 | Nov. 12, 2014 | Feb. 05, 2015
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding commercial paper |  |  |  |  |  |  |  | $ 932,000,000 us-gaap_CommercialPaper |  | $ 1,317,000,000 us-gaap_CommercialPaper |  |  |  |  |  |
Repayment of commercial paper |  |  |  |  |  |  | 700,000,000 us-gaap_RepaymentsOfCommercialPaper |  |  |  |  |  |  |  |  |
Early retirement of senior notes | 1,900,000,000 us-gaap_EarlyRepaymentOfSeniorDebt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing cost of early retirement of debt. |  |  |  |  |  |  |  | 48,000,000 dvn_EarlyRetirementOfDebt |  |  |  |  |  |  |  |
Proceeds from Unsecured Notes Payable |  | 2,465,000,000 us-gaap_ProceedsFromUnsecuredNotesPayable | 2,221,000,000 us-gaap_ProceedsFromUnsecuredNotesPayable |  | 1,187,000,000 us-gaap_ProceedsFromUnsecuredNotesPayable | 986,000,000 us-gaap_ProceedsFromUnsecuredNotesPayable |  |  |  |  |  |  |  |  |  |
Senior Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit Facility, borrowing capacity |  |  |  |  |  |  |  | 3,000,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = us-gaap_LineOfCreditMember |  |  |  |  |  |  |  |
Outstanding Credit Facility borrowings |  |  |  |  |  |  |  | 0 us-gaap_LineOfCredit / us-gaap_DebtInstrumentAxis = us-gaap_LineOfCreditMember |  |  |  |  |  |  |  |
Covenant description |  |  |  |  |  |  |  | This covenant requires Devon's ratio of total funded debt to total capitalization, as defined in the credit agreement, to be no greater than 65 percent. The credit agreement contains definitions of total funded debt and total capitalization that include adjustments to the respective amounts reported in the accompanying consolidated financial statements. Also, total capitalization is adjusted to add back noncash financial write-downs such as full cost ceiling impairments or goodwill impairments. |  |  |  |  |  |  |  |
Debt-to-capitalization ratio |  |  |  |  |  |  |  | 20.9 us-gaap_RatioOfIndebtednessToNetCapital1 / us-gaap_DebtInstrumentAxis = us-gaap_LineOfCreditMember |  |  |  |  |  |  |  |
Credit facility, facility fee |  |  |  |  |  |  |  | 3,800,000 us-gaap_LineOfCreditFacilityCommitmentFeeAmount / us-gaap_DebtInstrumentAxis = us-gaap_LineOfCreditMember |  |  |  |  |  |  |  |
Credit facility, frequency of facility fee payment |  |  |  |  |  |  |  | annual |  |  |  |  |  |  |  |
Senior Credit Facility Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit Facility, borrowing capacity |  |  |  |  |  |  |  | 30,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = dvn_SeniorCreditFacilityTwoMember |  |  |  |  |  |  |  |
Line of credit facility expiration date |  |  |  |  |  |  |  | Oct. 24, 2017 |  |  |  |  |  |  |  |
Senior Credit Facility Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit Facility, borrowing capacity |  |  |  |  |  |  |  | 164,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = dvn_SeniorCreditFacilityThreeMember |  |  |  |  |  |  |  |
Line of credit facility expiration date |  |  |  |  |  |  |  | Oct. 24, 2018 |  |  |  |  |  |  |  |
Senior Credit Facility Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit Facility, borrowing capacity |  |  |  |  |  |  |  | 2,800,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = dvn_SeniorCreditFacilityFourMember |  |  |  |  |  |  |  |
Line of credit facility expiration date |  |  |  |  |  |  |  | Oct. 24, 2019 |  |  |  |  |  |  |  |
Commercial Paper [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average borrowing rate on commercial paper borrowings |  |  |  |  |  |  |  | 0.44%us-gaap_ShortTermDebtWeightedAverageInterestRate / us-gaap_DebtInstrumentAxis = us-gaap_CommercialPaperMember |  |  |  |  |  |  |  |
Credit Facility, borrowing capacity |  |  |  |  |  |  |  | 3,000,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = us-gaap_CommercialPaperMember |  |  |  |  |  |  |  |
2.40% due July 15, 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Early retirement of senior notes |  |  |  |  |  |  |  | 500,000,000 us-gaap_EarlyRepaymentOfSeniorDebt / us-gaap_DebtInstrumentAxis = dvn_TwoPointFourZeroPercentDueJulyFifteenthTwoThousandAndSixteenMember |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | 500,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = dvn_TwoPointFourZeroPercentDueJulyFifteenthTwoThousandAndSixteenMember | [1] |  |  |  |  |  |  |  |  |  |  |  |
Debt, maturity date |  |  |  |  |  |  |  | Jul. 15, 2016 |  | Jul. 15, 2016 |  |  |  |  |  |
Debt interest rate, stated percentage |  |  |  |  |  |  |  | 2.40%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = dvn_TwoPointFourZeroPercentDueJulyFifteenthTwoThousandAndSixteenMember |  | 2.40%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = dvn_TwoPointFourZeroPercentDueJulyFifteenthTwoThousandAndSixteenMember |  |  |  |  |  |
Long term debt, gross |  |  |  |  |  |  |  |  |  | 500,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = dvn_TwoPointFourZeroPercentDueJulyFifteenthTwoThousandAndSixteenMember |  |  |  |  |  |
1.20% Due December 15, 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Early retirement of senior notes |  |  |  |  |  |  |  | 650,000,000 us-gaap_EarlyRepaymentOfSeniorDebt / us-gaap_DebtInstrumentAxis = dvn_OnePointTwoPercentDueDecemberFifteenthTwoThousandSixteenMember |  |  |  |  |  |  |  |
Debt, maturity date |  |  |  |  |  |  |  | Dec. 15, 2016 |  | Dec. 15, 2016 |  |  |  |  |  |
Debt interest rate, stated percentage |  |  |  |  |  |  |  | 1.20%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = dvn_OnePointTwoPercentDueDecemberFifteenthTwoThousandSixteenMember |  | 1.20%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = dvn_OnePointTwoPercentDueDecemberFifteenthTwoThousandSixteenMember |  |  |  |  |  |
1.875% due May 15, 2017 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Early retirement of senior notes |  |  |  |  |  |  |  | 750,000,000 us-gaap_EarlyRepaymentOfSeniorDebt / us-gaap_DebtInstrumentAxis = dvn_OnePointEightSevenFivePercentDueMayFifteenthTwoThousandSeventeenMember |  |  |  |  |  |  |  |
Debt, maturity date |  |  |  |  |  |  |  | May 15, 2017 |  | May 15, 2017 |  |  |  |  |  |
Debt interest rate, stated percentage |  |  |  |  |  |  |  | 1.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = dvn_OnePointEightSevenFivePercentDueMayFifteenthTwoThousandSeventeenMember |  | 1.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = dvn_OnePointEightSevenFivePercentDueMayFifteenthTwoThousandSeventeenMember |  |  |  |  |  |
Long term debt, gross |  |  |  |  |  |  |  |  |  | 750,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = dvn_OnePointEightSevenFivePercentDueMayFifteenthTwoThousandSeventeenMember |  |  |  |  |  |
Floating Rate due December 15, 2015 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt, maturity date |  |  |  |  |  |  |  | Dec. 15, 2015 |  | Dec. 15, 2015 |  |  |  |  |  |
Floating Rate Due December 15, 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt, maturity date |  |  |  |  |  |  |  | Dec. 15, 2016 |  | Dec. 15, 2016 |  |  |  |  |  |
Long term debt, gross |  |  |  |  |  |  |  | 350,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = dvn_FloatingRateDueDecemberFifteenthTwoThousandSixteenMember |  |  |  |  |  |  |  |
Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unamortized discount | 2,000,000 us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_DebtInstrumentAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unamortized debt issue cost | 6,000,000 us-gaap_UnamortizedDebtIssuanceExpense / us-gaap_DebtInstrumentAxis = us-gaap_SeniorNotesMember |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Make Whole Premium [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing cost of early retirement of debt. |  |  |  |  |  |  |  |  |  |  | 40,000,000 dvn_EarlyRetirementOfDebt / us-gaap_DebtInstrumentAxis = dvn_MakeWholePremiumMember |  |  |  |  |
General Partner [Member] | Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit Facility, borrowing capacity |  |  |  |  |  |  |  | 250,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / dei_LegalEntityAxis = us-gaap_GeneralPartnerMember |  |  |  |  |  |  |  |
Outstanding Credit Facility borrowings |  |  |  |  |  |  |  | 0 us-gaap_LineOfCredit / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / dei_LegalEntityAxis = us-gaap_GeneralPartnerMember |  |  |  |  |  |  |  |
Line of credit facility expiration date |  |  |  |  |  |  |  | Mar. 07, 2019 |  |  |  |  |  |  |  |
Covenant description |  |  |  |  |  |  |  | The financial covenants are tested on a quarterly basis, based on the rolling four-quarter period that ends on the last day of each fiscal quarter, and include (i) maintaining a maximum consolidated leverage ratio (as defined in the credit facility, but generally computed as the ratio of consolidated funded indebtedness to consolidated earnings before interest, taxes, depreciation, amortization and certain other noncash charges) of 4.00 to 1.00, provided that the maximum consolidated leverage ratio is 4.50 to 1.00 during an acquisition period (as defined in the credit facility) and (ii) maintaining a minimum consolidated interest coverage ratio (as defined in the credit facility, but generally computed as the ratio of consolidated earnings before interest, taxes, depreciation, amortization and certain other noncash charges to consolidated interest charges) of 2.50 to 1.00 at all times unless an investment grade event (as defined in the credit facility) occurs. EnLink and the General Partner are in compliance with all such covenants as of December 31, 2014. |  |  |  |  |  |  |  |
Minimum [Member] | Commercial Paper [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper, maturity duration |  |  |  |  |  |  |  | 1 day |  |  |  |  |  |  |  |
Minimum [Member] | General Partner [Member] | Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ratio of consolidated earnings to consolidated interest charges |  |  |  |  |  |  |  | 2.50 dvn_RatioOfConsolidatedEarningsToConsolidatedInterestCharges / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / dei_LegalEntityAxis = us-gaap_GeneralPartnerMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |  |  |  |  |
Maximum [Member] | Senior Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt-to-capitalization ratio |  |  |  |  |  |  |  | 65 us-gaap_RatioOfIndebtednessToNetCapital1 / us-gaap_DebtInstrumentAxis = us-gaap_LineOfCreditMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |  |  |  |  |
Maximum [Member] | Commercial Paper [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper, maturity duration |  |  |  |  |  |  |  | 365 days |  |  |  |  |  |  |  |
Maximum [Member] | General Partner [Member] | Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated leverage ratio |  |  |  |  |  |  |  | 4.00 dvn_ConsolidatedLeverageRatio / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / dei_LegalEntityAxis = us-gaap_GeneralPartnerMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |  |  |  |  |
Maximum [Member] | General Partner [Member] | Credit Facility [Member] | Acquisition Period [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated leverage ratio |  |  |  |  |  |  |  | 4.50 dvn_ConsolidatedLeverageRatio / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / dei_LegalEntityAxis = us-gaap_GeneralPartnerMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_StatementScenarioAxis = dvn_AcquisitionPeriodMember |  |  |  |  |  |  |  |
GeoSouthern Intermediate Holdings, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate purchase price of acquisitions |  |  |  |  |  |  |  |  |  |  |  | 6,000,000,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = dvn_GeosouthernIntermediateHoldingsLlcMember |  |  |  |
Proceeds from Unsecured Notes Payable |  |  |  |  |  |  |  | 2,248,000,000 us-gaap_ProceedsFromUnsecuredNotesPayable / us-gaap_BusinessAcquisitionAxis = dvn_GeosouthernIntermediateHoldingsLlcMember |  |  |  |  |  |  |  |
GeoSouthern Intermediate Holdings, LLC [Member] | Fixed and Floating Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  | 2,250,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_BusinessAcquisitionAxis = dvn_GeosouthernIntermediateHoldingsLlcMember / us-gaap_DebtInstrumentAxis = dvn_FixedAndFloatingSeniorNotesMember |  |  |  |  |  |
GeoSouthern Intermediate Holdings, LLC [Member] | Term Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  | 2,000,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_BusinessAcquisitionAxis = dvn_GeosouthernIntermediateHoldingsLlcMember / us-gaap_DebtInstrumentAxis = dvn_TermLoanMember |  |  |  |  |  |
GeoSouthern Intermediate Holdings, LLC [Member] | 1.20% Due December 15, 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  | 650,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_BusinessAcquisitionAxis = dvn_GeosouthernIntermediateHoldingsLlcMember / us-gaap_DebtInstrumentAxis = dvn_OnePointTwoPercentDueDecemberFifteenthTwoThousandSixteenMember | [2] |  |  |  |  |  |  |
Debt, maturity date |  |  |  |  |  |  |  | Dec. 15, 2016 |  |  |  |  |  |  |  |
Debt interest rate, stated percentage |  |  |  |  |  |  |  | 1.20%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_BusinessAcquisitionAxis = dvn_GeosouthernIntermediateHoldingsLlcMember / us-gaap_DebtInstrumentAxis = dvn_OnePointTwoPercentDueDecemberFifteenthTwoThousandSixteenMember |  |  |  |  |  |  |  |
GeoSouthern Intermediate Holdings, LLC [Member] | Floating Rate due December 15, 2015 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  | 500,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_BusinessAcquisitionAxis = dvn_GeosouthernIntermediateHoldingsLlcMember / us-gaap_DebtInstrumentAxis = dvn_FloatingRateDueDecemberFifteenthTwoThousandFifteenMember |  |  |  |  |  |  |  |
Debt, maturity date |  |  |  |  |  |  |  | Dec. 15, 2015 |  |  |  |  |  |  |  |
Basis spread on LIBOR rate |  |  |  |  |  |  |  | 0.45%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_BusinessAcquisitionAxis = dvn_GeosouthernIntermediateHoldingsLlcMember / us-gaap_DebtInstrumentAxis = dvn_FloatingRateDueDecemberFifteenthTwoThousandFifteenMember |  |  |  |  |  |  |  |
GeoSouthern Intermediate Holdings, LLC [Member] | Floating Rate Due December 15, 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  | 350,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_BusinessAcquisitionAxis = dvn_GeosouthernIntermediateHoldingsLlcMember / us-gaap_DebtInstrumentAxis = dvn_FloatingRateDueDecemberFifteenthTwoThousandSixteenMember |  |  |  |  |  |  |  |
Debt, maturity date |  |  |  |  |  |  |  | Dec. 15, 2016 |  |  |  |  |  |  |  |
Basis spread on LIBOR rate |  |  |  |  |  |  |  | 0.54%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_BusinessAcquisitionAxis = dvn_GeosouthernIntermediateHoldingsLlcMember / us-gaap_DebtInstrumentAxis = dvn_FloatingRateDueDecemberFifteenthTwoThousandSixteenMember |  |  |  |  |  |  |  |
E2 Energy Services LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Promissory note for vehicle fleet |  |  |  |  |  |  |  | 400,000 us-gaap_NotesPayable / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = dvn_E2EnergyServicesLlcMember |  |  |  |  |  |  |  |
EnLink [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of debt assumed |  |  |  |  |  |  |  |  |  |  |  |  | 1,454,000,000 us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumed1 / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |
Long term debt, gross |  |  |  |  |  |  |  | 2,023,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
EnLink [Member] | Unsecured Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit Facility, borrowing capacity |  |  |  |  |  |  |  | 1,000,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = dvn_UnsecuredRevolvingCreditFacilityMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
Credit Facility, remaining borrowing capacity |  |  |  |  |  |  |  | 749,000,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / us-gaap_DebtInstrumentAxis = dvn_UnsecuredRevolvingCreditFacilityMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
Outstanding Credit Facility borrowings |  |  |  |  |  |  |  | 237,000,000 us-gaap_LineOfCredit / us-gaap_DebtInstrumentAxis = dvn_UnsecuredRevolvingCreditFacilityMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
Covenant description |  |  |  |  |  |  |  | Among other things, these covenants include maintaining a ratio of EnLink's consolidated indebtedness to consolidated EBITDA (as defined in the credit facility, which definition includes projected EBITDA from certain capital expansion projects) of no more than 5.0 to 1.0. If EnLink consummates one or more acquisitions in which the aggregate purchase price is $50 million or more, the maximum allowed ratio of EnLink's consolidated indebtedness to consolidated EBITDA may increase to 5.5 to 1.0 for the quarter of the acquisition and the three following quarters. |  |  |  |  |  |  |  |
Aggregate purchase price of acquisitions |  |  |  |  |  |  |  | 50,000,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_DebtInstrumentAxis = dvn_UnsecuredRevolvingCreditFacilityMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
EnLink [Member] | Unsecured Letter Of Credit Subfacility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding Credit Facility borrowings |  |  |  |  |  |  |  | 14,000,000 us-gaap_LineOfCredit / us-gaap_DebtInstrumentAxis = dvn_UnsecuredLetterOfCreditSubfacilityMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
EnLink [Member] | Unsecured Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,200,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = dvn_UnsecuredSeniorNotesMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |
EnLink [Member] | 2.70% due April 1, 2019 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  |  | 400,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = dvn_TwoPointSevenPercentDueAprilFirstTwoThousandAndNinteenMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |
Debt, maturity date |  |  |  |  |  |  |  | Apr. 01, 2019 |  |  |  |  |  |  |  |
Debt interest rate, stated percentage |  |  |  |  |  |  |  | 2.70%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = dvn_TwoPointSevenPercentDueAprilFirstTwoThousandAndNinteenMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
Long term debt, gross |  |  |  |  |  |  |  | 400,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = dvn_TwoPointSevenPercentDueAprilFirstTwoThousandAndNinteenMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
EnLink [Member] | 4.40% due April 1, 2024 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  |  | 450,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = dvn_FourPointFourZeroPercentDueAprilOneTwoThousandTwentyFourMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember | 100,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = dvn_FourPointFourZeroPercentDueAprilOneTwoThousandTwentyFourMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |
Debt, maturity date |  |  |  |  |  |  |  | Apr. 01, 2024 |  |  |  |  |  |  |  |
Debt interest rate, stated percentage |  |  |  |  |  |  |  | 4.40%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = dvn_FourPointFourZeroPercentDueAprilOneTwoThousandTwentyFourMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
Long term debt, gross |  |  |  |  |  |  |  | 550,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = dvn_FourPointFourZeroPercentDueAprilOneTwoThousandTwentyFourMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
EnLink [Member] | 5.60% due April 1, 2044 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  |  | 350,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = dvn_FivePointSixZeroPercentDueAprilOneTwoThousandAndFortyFourMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |
Debt, maturity date |  |  |  |  |  |  |  | Apr. 01, 2044 |  |  |  |  |  |  |  |
Debt interest rate, stated percentage |  |  |  |  |  |  |  | 5.60%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = dvn_FivePointSixZeroPercentDueAprilOneTwoThousandAndFortyFourMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
Long term debt, gross |  |  |  |  |  |  |  | 350,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = dvn_FivePointSixZeroPercentDueAprilOneTwoThousandAndFortyFourMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
EnLink [Member] | 5.05% due April 1, 2045 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = dvn_FivePointZeroFivePercentDueAprilOneTwoThousandAndFortyFiveMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |
Debt, maturity date |  |  |  |  |  |  |  | Apr. 01, 2045 |  |  |  |  |  |  |  |
Debt interest rate, stated percentage |  |  |  |  |  |  |  | 5.05%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = dvn_FivePointZeroFivePercentDueAprilOneTwoThousandAndFortyFiveMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
Long term debt, gross |  |  |  |  |  |  |  | 300,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = dvn_FivePointZeroFivePercentDueAprilOneTwoThousandAndFortyFiveMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
EnLink [Member] | Maximum [Member] | Unsecured Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ratio of consolidated indebtness |  |  |  |  |  |  |  | 5.0 dvn_RatioOfConsolidatedIndebtness / us-gaap_DebtInstrumentAxis = dvn_UnsecuredRevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember |  |  |  |  |  |  |  |
EnLink [Member] | Maximum [Member] | Unsecured Revolving Credit Facility [Member] | Acquisition Period [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ratio of consolidated indebtness |  |  |  |  |  |  |  | 5.5 dvn_RatioOfConsolidatedIndebtness / us-gaap_DebtInstrumentAxis = dvn_UnsecuredRevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember / us-gaap_StatementScenarioAxis = dvn_AcquisitionPeriodMember |  |  |  |  |  |  |  |
Subsequent Event [Member] | EnLink [Member] | Unsecured Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit Facility, borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,500,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = dvn_UnsecuredRevolvingCreditFacilityMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = dvn_EnlinkMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Line of credit facility expiration date |  |  |  |  |  |  |  | Mar. 07, 2020 |  |  |  |  |  |  |  |
[1] | The 1.875% $750 million note due May 15, 2017 and 2.4% $500 million note due July 15, 2016 were redeemed on November 13, 2014.
[2] | The 1.20% $650 million note due December 15, 2016 was redeemed on November 13, 2014.

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