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Leases (Schedule of Expected Lease Income ) (Parenthetical) (Details) $ in Millions | Jun. 30, 2019 USD ($)
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Leases [Abstract] |
Operating lease income for leases not yet commenced | $ 30

X
- Definition Amount of lease payments to be received by lessor for operating leases not yet commenced. + References No definition available. + Details
Name: | dvn_LessorOperatingLeasePaymentsToBeReceivedForLeasesNotYetCommenced
Namespace Prefix: | dvn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration