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Debt And Related Expenses (Schedule Of Debt Assumed) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Apr. 25, 2003
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	Jul. 01, 2018
Principal amount of senior notes issued			$ 125,000,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = dvn_EightPointTwoFivePercentDueJulyFirstTwoThousandAndEighteenMember
Fair Value of Debt Assumed	147,000,000us-gaap_NotesAssumed1 / us-gaap_DebtInstrumentAxis = dvn_EightPointTwoFivePercentDueJulyFirstTwoThousandAndEighteenMember
Effective rate of debt	5.50%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = dvn_EightPointTwoFivePercentDueJulyFirstTwoThousandAndEighteenMember
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	Sep. 15, 2027
Principal amount of senior notes issued			150,000,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = dvn_SevenPointFiveZeroPercentDueSeptemberFifteenthTwoThousandAndTwentySevenMember
Fair Value of Debt Assumed	$ 169,000,000us-gaap_NotesAssumed1 / us-gaap_DebtInstrumentAxis = dvn_SevenPointFiveZeroPercentDueSeptemberFifteenthTwoThousandAndTwentySevenMember
Effective rate of debt	6.50%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = dvn_SevenPointFiveZeroPercentDueSeptemberFifteenthTwoThousandAndTwentySevenMember

X

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

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X

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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X

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(2))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
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X

- Definition

The fair value of notes assumed in noncash investing or financing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586



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-Name Accounting Standards Codification

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