Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2026

Fair Value Disclosures [Abstract]

Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis

The following table provides fair value measurement information within the fair value hierarchy for certain of EOG's financial assets and liabilities carried at fair value on a recurring basis at June 30, 2026 and December 31, 2025 (in millions):

	Fair Value Measurements Using:
	Quoted Prices in Active Markets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Balance at June 30, 2026
Financial Assets:
Natural Gas Swaps	$	—	$	34	$	—	$	34
Natural Gas Collars	—		14		—		14
NGL Swaps	—		1		—		1
Brent Linked Gas Sales Contract	—		—		161		161
Balance at December 31, 2025
Financial Assets:
Natural Gas Swaps	$	—	$	12	$	—	$	12
Natural Gas Collars	—		4		—		4
NGL Swaps	—		2		—		2
Brent Linked Gas Sales Contract	—		—		31		31
Financial Liabilities:
Natural Gas Swaps	$	—	$	1	$	—	$	1
Natural Gas Collars	—		1		—		1