Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2015

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

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, 2015 and December 31, 2014 (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 June 30, 2015
Financial Assets
Natural Gas Options/Swaptions	$	—	$	53	$	—	$	53
Crude Oil Swaps	—		54		—		54
At December 31, 2014
Financial Assets
Natural Gas Options/Swaptions	$	—	$	100	$	—	$	100
Crude Oil Swaps	—		121		—		121
Crude Oil Options/Swaptions	—		244		—		244