XML 177 R119.htm IDEA: XBRL DOCUMENT
v3.20.4

Supplemental Information on Oil and Gas Operations (Unaudited) (Proved Undeveloped Reserves) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2020 MMBoe
Reserve Quantities [Line Items] |  |
Proved undeveloped reserves (MMBoe) beginning balance | 168 | [1]
Proved undeveloped reserves, extensions and discoveries | 105 |
Proved undeveloped reserves, conversion to proved developed reserves | (68) |
Proved undeveloped reserves (MMBoe) ending balance | 178 | [1]
United States [Member] |  |
Reserve Quantities [Line Items] |  |
Proved undeveloped reserves (MMBoe) beginning balance | 168 |
Proved undeveloped reserves, extensions and discoveries | 105 |
Proved undeveloped reserves, revisions due to prices | (8) |
Proved undeveloped reserves, revisions other than price | (20) |
Proved undeveloped reserves, Purchase of reserves | 2 |
Proved undeveloped reserves, sale of reserves | (1) |
Proved undeveloped reserves, conversion to proved developed reserves | (68) |
Proved undeveloped reserves (MMBoe) ending balance | 178 |
[1] | Gas reserves are converted to Boe at the rate of six Mcf per Bbl of oil, based upon the approximate relative energy content of gas and oil. NGL reserves are converted to Boe on a one-to-one basis with oil. The conversion rates are not necessarily indicative of the relationship of oil, natural gas and NGL prices.

X
- Definition Proved undeveloped reserves, conversion to proved developed reserves (Energy). + References No definition available. + Details
Name: | dvn_ProvedUndevelopedReservesConversionToProvedDevelopedReservesEnergy
Namespace Prefix: | dvn_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | duration

X
- Definition Proved undeveloped reserves, extensions and discoveries (Energy) + References No definition available. + Details
Name: | dvn_ProvedUndevelopedReservesExtensionsAndDiscoveriesEnergy
Namespace Prefix: | dvn_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | duration

X
- Definition Proved Undeveloped Reserves Purchases. + References No definition available. + Details
Name: | dvn_ProvedUndevelopedReservesPurchases
Namespace Prefix: | dvn_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | duration

X
- Definition Proved undeveloped reserves, revisions due to prices (Energy). + References No definition available. + Details
Name: | dvn_ProvedUndevelopedReservesRevisionsDueToPricesEnergy
Namespace Prefix: | dvn_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | duration

X
- Definition Proved undeveloped reserves, revisions other than price (Energy) + References No definition available. + Details
Name: | dvn_ProvedUndevelopedReservesRevisionsOtherThanPriceEnergy
Namespace Prefix: | dvn_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | duration

X
- Definition Proved undeveloped reserves sale of reserves energy. + References No definition available. + Details
Name: | dvn_ProvedUndevelopedReservesSaleOfReservesEnergy
Namespace Prefix: | dvn_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | duration

X
- Definition Energy measure of proved undeveloped reserves of crude oil, including condensate and natural gas liquids, natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Form 20-F -Section Item 18 -Subsection Instruction 2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61797-109447 + Details
Name: | srt_ProvedUndevelopedReserveBOE1
Namespace Prefix: | srt_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- 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
Name: | srt_ReserveQuantitiesLineItems
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |