Oil and Gas Exploration and Production Industries Disclosures, Results Of Operations (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Crude Oil and Condensate, Natural Gas Liquids and Natural Gas Revenues	[1]	$ 7,290,256		$ 11,581,445		$ 11,946,487
Other	[1]	60,954		134,358		89,635
Total	[1]	7,351,210		11,715,803		12,036,122
Exploration Costs	[1]	145,788		139,881		148,999
Dry Hole Costs	[1]	13,083		28,001		5,405
Transportation Costs	[1]	734,989		758,300		746,876
Gathering and Processing Costs		459,211	[1]	479,102	[1]	436,973
Production Costs	[1]	1,517,347		2,133,986		2,028,083
Impairments	[1]	2,099,780		517,896		347,021
Depreciation, Depletion and Amortization	[1]	3,268,075		3,657,597		3,320,276
Income (Loss) Before Income Taxes	[1]	(887,063)		4,001,040		5,002,489
Income Tax Provision (Benefit)	[1]	(193,483)		942,582		1,100,145
Results of Operations	[1]	(693,580)		3,058,458		3,902,344
United States
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Crude Oil and Condensate, Natural Gas Liquids and Natural Gas Revenues	[1]	7,055,098		11,250,853		11,488,620
Other	[1]	60,989		134,325		89,708
Total	[1]	7,116,087		11,385,178		11,578,328
Exploration Costs	[1]	136,266		130,302		121,572
Dry Hole Costs	[1]	13,055		11,133		4,983
Transportation Costs	[1]	734,071		753,558		742,792
Gathering and Processing Costs		459,211	[1]	479,102	[1]	404,471
Production Costs	[1]	1,479,976		2,063,078		1,924,504
Impairments	[1]	2,018,283		510,948		344,595
Depreciation, Depletion and Amortization	[1]	3,192,000		3,560,609		3,181,801
Income (Loss) Before Income Taxes	[1]	(916,775)		3,876,448		4,853,610
Income Tax Provision (Benefit)	[1]	(220,437)		884,450		1,086,077
Results of Operations	[1]	(696,338)		2,991,998		3,767,533
Trinidad
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Crude Oil and Condensate, Natural Gas Liquids and Natural Gas Revenues	[1]	179,690		269,957		302,112
Other	[1]	(35)		18		(49)
Total	[1]	179,655		269,975		302,063
Exploration Costs	[1]	1,909		4,290		21,402
Dry Hole Costs	[1]	0		13,033		0
Transportation Costs	[1]	747		4,014		3,236
Gathering and Processing Costs		0	[1]	0	[1]	0
Production Costs	[1]	26,964		30,539		33,506
Impairments	[1]	815		5,713		0
Depreciation, Depletion and Amortization	[1]	60,328		79,156		91,788
Income (Loss) Before Income Taxes	[1]	88,892		133,230		152,131
Income Tax Provision (Benefit)	[1]	23,526		54,980		12,170
Results of Operations	[1]	65,366		78,250		139,961
Other International
Results of Operations for Oil and Gas Producing Activities, by Geographic Area [Line Items]
Crude Oil and Condensate, Natural Gas Liquids and Natural Gas Revenues	[1],[2]	55,468		60,635		155,755
Other	[1],[2]	0		15		(24)
Total	[1],[2]	55,468		60,650		155,731
Exploration Costs	[1],[2]	7,613		5,289		6,025
Dry Hole Costs	[1],[2]	28		3,835		422
Transportation Costs	[1],[2]	171		728		848
Gathering and Processing Costs		0	[1],[2]	0	[1],[2]	32,502
Production Costs	[1],[2]	10,407		40,369		70,073
Impairments	[1],[2]	80,682		1,235		2,426
Depreciation, Depletion and Amortization	[1],[2]	15,747		17,832		46,687
Income (Loss) Before Income Taxes	[1],[2]	(59,180)		(8,638)		(3,252)
Income Tax Provision (Benefit)	[1],[2]	3,428		3,152		1,898
Results of Operations	[1],[2]	$ (62,608)		$ (11,790)		$ (5,150)

[1] Excludes gains or losses on the mark-to-market of financial commodity derivative contracts, gains or losses on sales of reserves and related assets, interest charges and general corporate expenses for each of the three years in the period ended December 31, 2020.

[2] Other International primarily consists of EOG's United Kingdom, China and Canada operations. EOG began an exploration program in Oman in the third quarter of 2020. The United Kingdom operations were sold in the fourth quarter of 2018. (3)Effective January 1, 2018, EOG adopted the provisions of Accounting Standards Update (ASU) 2014-09, "Revenue From Contracts With Customers" (ASU 2014-09). In connection with the adoption of ASU 2014-09, EOG presents natural gas processing fees relating to certain processing and marketing agreements within its United States segment as Gathering and Processing Costs instead of as a deduction to Natural Gas Revenues. There was no impact to operating income or net income resulting from changes to the presentation of natural gas processing fees (see Note 1 to Consolidated Financial Statements).