Segment Information (Details) - USD ($)		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Selected Information [Line Items]
Document Period End Date		Mar. 31, 2020
Schedule of Segment Reporting Information By Segment [Abstract]
Operating Revenues and Other		$ 4,717,692,000	$ 4,058,642,000
Operating Income (Loss)		57,585,000	876,530,000
Other Income, Net		18,108,000	5,612,000
Interest Expense, Net		(44,690,000)	(54,906,000)
Income Before Income Taxes		31,003,000	827,236,000
Total Assets		37,634,084,000		$ 37,124,608,000
Pretax impairment charges for proved oil and gas properties and other assets		60,000,000
United States
Schedule of Segment Reporting Information By Segment [Abstract]
Operating Revenues and Other		4,660,735,000	3,977,019,000
Operating Income (Loss)		105,406,000	850,900,000
Total Assets		36,921,668,000		36,274,942,000
Trinidad
Schedule of Segment Reporting Information By Segment [Abstract]
Operating Revenues and Other		41,643,000	69,868,000
Operating Income (Loss)		12,663,000	38,832,000
Total Assets		538,159,000		705,747,000
Other International
Schedule of Segment Reporting Information By Segment [Abstract]
Operating Revenues and Other	[1]	15,314,000	11,755,000
Operating Income (Loss)	[1],[2]	(60,484,000)	$ (13,202,000)
Total Assets	[1]	$ 174,257,000		$ 143,919,000

[1] Other International primarily consists of EOG's China and Canada operations.

[2] In the first quarter of 2020, EOG recorded pretax impairment charges of $60 million for firm commitment contracts related to its decision to exit the Horn River Basin in British Columbia, Canada.