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v3.19.3.a.u2

Accounting For Certain Long-Lived Assets (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Schedule of Impaired Long-Lived Assets Held and Used [Line Items] |  |  |
Proved oil and gas properties carrying amount | $ 408 | $ 139 |
Proved oil and gas properties, other property, plant and equipment, and other assets written down to fair value | 201 | 18 |
Pretax impairment chages for proved oil and gas properties, other property, plant and equipment and other assets | 207 | 121 |
Amortization and Impairments of Unproved Oil and Gas Property Including Amortization of Capitalized Interest | $ 220 | $ 173 | $ 211

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- Definition Amortization and impairments of unproved oil and gas property costs including amortization of capitalized interest + References No definition available. + Details
Name: | eog_AmortizationandImpairmentsofUnprovedOilandGasPropertyIncludingAmortizationofCapitalizedInterest
Namespace Prefix: | eog_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Pretax impairment charges for proved oil and gas properties, other property, plant and equipment and other assets + References No definition available. + Details
Name: | eog_Pretaximpairmentchagesforprovedoilandgaspropertiesotherpropertyplantandequipmentandotherassets
Namespace Prefix: | eog_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Proved oil and gas properties carrying amount + References No definition available. + Details
Name: | eog_Provedoilandgaspropertiescarryingamount
Namespace Prefix: | eog_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proved oil and gas properties, other property, plant and equipment, and other assets written down to fair value + References No definition available. + Details
Name: | eog_Provedoilandgaspropertiesotherpropertyplantandequipmentandotherassetswrittendowntofairvalue
Namespace Prefix: | eog_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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