Risk Management Activities - Schedule of Derivative Instruments (Details)	3 Months Ended
Mar. 31, 2026 MMBTU $ / mMBTu $ / bbl bbl
January - April 2026 (closed) \| Price Swaps \| Natural Gas Swaps
Derivatives, Fair Value [Line Items]
Volume (MMBtud in thousands) \| MMBTU	460,000
Weighted Average Price (dollars per barrel) \| $ / bbl	3.78
January - April 2026 (closed) \| Collar \| Natural Gas Swaps
Derivatives, Fair Value [Line Items]
Volume (MMBtud in thousands) \| MMBTU	80,000
Ceiling Price (in dollars per share)	4.28
Floor Price (in dollars per share)	3.72
May - June 2026 \| Price Swaps \| Natural Gas Swaps
Derivatives, Fair Value [Line Items]
Volume (MMBtud in thousands) \| MMBTU	460,000
Weighted Average Price (dollars per barrel) \| $ / bbl	3.78
May - June 2026 \| Collar \| Natural Gas Swaps
Derivatives, Fair Value [Line Items]
Volume (MMBtud in thousands) \| MMBTU	80,000
Ceiling Price (in dollars per share)	4.28
Floor Price (in dollars per share)	3.72
July - December 2026 \| Price Swaps \| Natural Gas Swaps
Derivatives, Fair Value [Line Items]
Volume (MMBtud in thousands) \| MMBTU	450,000
Weighted Average Price (dollars per barrel) \| $ / bbl	3.79
July - December 2026 \| Collar \| Natural Gas Swaps
Derivatives, Fair Value [Line Items]
Volume (MMBtud in thousands) \| MMBTU	70,000
Ceiling Price (in dollars per share)	4.23
Floor Price (in dollars per share)	3.71
January - December 2027 \| Collar \| Natural Gas Swaps
Derivatives, Fair Value [Line Items]
Volume (MMBtud in thousands) \| MMBTU	120,000
Ceiling Price (in dollars per share)	4.41
Floor Price (in dollars per share)	3.42
January - March 2026 (closed) \| Price Swaps \| Ethane
Derivatives, Fair Value [Line Items]
Volume (MBbld) \| bbl	11,000
Weighted Average Price Differential (dollars per barrel) \| $ / bbl	10.94
January - March 2026 (closed) \| Price Swaps \| Propane
Derivatives, Fair Value [Line Items]
Volume (MBbld) \| bbl	1,000
Weighted Average Price Differential (dollars per barrel) \| $ / bbl	30.24
April - December 2026 \| Price Swaps \| Ethane
Derivatives, Fair Value [Line Items]
Volume (MBbld) \| bbl	11,000
Weighted Average Price Differential (dollars per barrel) \| $ / bbl	10.94
April - December 2026 \| Price Swaps \| Propane
Derivatives, Fair Value [Line Items]
Volume (MBbld) \| bbl	1,000
Weighted Average Price Differential (dollars per barrel) \| $ / bbl	30.24

Derivative, Swap Type, Basis Differential

No definition available.

Name:	eog_DerivativeSwapTypeBasisDifferential
Namespace Prefix:	eog_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- 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

Name:	us-gaap_DerivativeAverageCapPrice
Namespace Prefix:	us-gaap_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- 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

Name:	us-gaap_DerivativeAverageFloorPrice
Namespace Prefix:	us-gaap_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

Nominal energy measure used to calculate payments on a derivative instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:energyItemType
Balance Type:	na
Period Type:	duration

- Definition

Nominal volume used to calculate payments on a derivative instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 181
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-181

+ Details

Name:	us-gaap_DerivativeNonmonetaryNotionalAmountVolume
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:volumeItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeSwapTypeAverageFixedPrice
Namespace Prefix:	us-gaap_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- 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

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 182
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-182

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4B
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4B
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4B
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4B

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A

+ Details

Name:	us-gaap_DerivativesFairValueLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=eog_DerivativeContractsJanuaryThroughAprilYearOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_SwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_EnergyAxis=srt_NaturalGasReservesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=eog_CollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=eog_DerivativeContractsMayThroughJuneYearOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=eog_DerivativeContractsJulyThroughDecemberYearOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=eog_DerivativeContractsJanuaryThroughDecemberYearTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=eog_DerivativeContractsJanuaryThroughMarchYearOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_EnergyAxis=eog_EthaneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_EnergyAxis=eog_PropaneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=eog_DerivativeContractsAprilThroughDecemberYearOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: