Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Recurring Fair Value Measurements

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 December 31, 2021 and 2020 (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
At December 31, 2021
Financial Assets:
Natural Gas Swaps	$	—	$	29	$	—	$	29
Natural Gas Basis Swaps	—		2		—		2
Crude Oil Swaps	—		15		—		15
Financial Liabilities:
Crude Oil Roll Differential Swaps	—		24		—		24
Natural Gas Swaps	—		121		—		121
Crude Oil Swaps	—		340		—		340
Natural Gas Basis Swaps	—		1		—		1
At December 31, 2020
Financial Assets:
Natural Gas Swaps	$	—	$	66	$	—	$	66
Financial Liabilities:
Crude Oil Roll Differential Swaps	—		1		—		1