Derivative Financial Instruments (Schedule Of Open Oil Derivative Positions) (Details)	12 Months Ended
Dec. 31, 2016 $ / bbl bbl
NYMEX West Texas Intermediate Price Swaps Oil Q1-Q4 2017 [Member]
Derivative [Line Items]
Volume Per Day (Bbls/d) \| bbl	72,527
Weighted Average Price Swap	54.32
NYMEX West Texas Intermediate Price Swaps Oil Q1-Q4 2018 [Member]
Derivative [Line Items]
Volume Per Day (Bbls/d) \| bbl	2,600
Weighted Average Price Swap	53.38
NYMEX West Texas Intermediate Price Collars Oil Q1-Q4 2017 [Member]
Derivative [Line Items]
Volume Per Day (Bbls/d) \| bbl	53,245
Weighted Average Floor Price	45.16
Weighted Average Ceiling Price	57.97
NYMEX West Texas Intermediate Price Collars Oil Q1-Q4 2018 [Member]
Derivative [Line Items]
Volume Per Day (Bbls/d) \| bbl	6,189
Weighted Average Floor Price	46.97
Weighted Average Ceiling Price	56.97
Midland Sweet Basis Swaps Oil Q1-Q4 2017 [Member]
Derivative [Line Items]
Volume Per Day (Bbls/d) \| bbl	10,000
Weighted Average Differential To WTI	(0.43)

Weighted Average Differential to W T I

No definition available.

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- Definition

The average cap rate on a group of price risk derivatives such as caps or collars. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract.

+ References

No definition available.

+ Details

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- Definition

The average floor rate on a group of price risk derivatives such as floors or collars. A payment or receipt is triggered if the market rate falls below the floor rate on the contract.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Nominal volume used to calculate payments on a derivative instrument.

+ References

No definition available.

+ Details

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- Definition

Average fixed price related to the group of price risk swap derivatives.

+ References

No definition available.

+ Details

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Data Type:	us-types:perUnitItemType
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- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=dvn_NYMEXWestTexasIntermediatePriceSwapsOilQ1Q42017Member
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- Details

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- Details

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- Details

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- Details

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