Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2018		Dec. 31, 2017	Dec. 31, 2016
Operating Revenues and Other
Total		$ 17,275,399		$ 11,208,320	$ 7,650,632	[1]
Operating Expenses
Lease and Well		1,282,678		1,044,847	927,452
Transportation Costs	[2]	746,876		740,352	764,106
Gathering and Processing Costs		436,973	[2],[3]	148,775	122,901
Exploration Costs		148,999		145,342	124,953
Dry Hole Costs	[2]	5,405		4,609	10,657
Impairments		347,021		479,240	620,267
Marketing Costs		5,203,243		3,330,237	2,007,635
Depreciation, Depletion and Amortization		3,435,408		3,409,387	3,553,417
General and Administrative		426,969		434,467	394,815
Taxes Other Than Income		772,481		544,662	349,710
Total		12,806,053		10,281,918	8,875,913
Operating Income (Loss)		4,469,346		926,402	(1,225,281)
Other Income (Expense), Net		16,704		9,152	(50,543)
Income (Loss) Before Interest Expense and Income Taxes		4,486,050		935,554	(1,275,824)
Interest Expense
Incurred		269,549		301,801	313,341
Capitalized		(24,497)		(27,429)	(31,660)
Net Interest Expense		245,052		274,372	281,681
Income (Loss) Before Income Taxes		4,240,998		661,182	(1,557,505)
Income Tax Provision (Benefit)		821,958		(1,921,397)	(460,819)
Net Income (Loss)		$ 3,419,040		$ 2,582,579	$ (1,096,686)
Net Income (Loss) Per Share
Basic		$ 5.93		$ 4.49	$ (1.98)
Diluted		$ 5.89		$ 4.46	$ (1.98)
Average Number of Common Shares [Abstract]
Basic (in shares)		576,578		574,620	553,384
Diluted (in shares)		580,441		578,693	553,384
Other Comprehensive Income (Loss)
Foreign Currency Translation Adjustments		$ 16,816		$ 2,799	$ 12,097
Other, Net of Tax		1,123		(3,086)	2,231
Other Comprehensive Income (Loss)		17,939		(287)	14,328
Comprehensive Income (Loss)		3,436,979		2,582,292	(1,082,358)
Crude Oil and Condensate
Operating Revenues and Other
Revenues		9,517,440		6,256,396	4,317,341
Natural Gas Liquids
Operating Revenues and Other
Revenues		1,127,510		729,561	437,250
Natural Gas
Operating Revenues and Other
Revenues		1,301,537		921,934	742,152
Gains (Losses) on Mark-to-Market Commodity Derivative Contracts
Operating Revenues and Other
Revenues		(165,640)		19,828	(99,608)
Gathering, Processing and Marketing
Operating Revenues and Other
Revenues		5,230,355		3,298,087	1,966,259
Gains (Losses) on Asset Dispositions, Net
Operating Revenues and Other
Revenues		174,562		(99,096)	205,835
Other, Net
Operating Revenues and Other
Revenues		$ 89,635		$ 81,610	$ 81,403

[1] EOG had sales activity with three significant purchasers in 2016, one totaling $1.2 billion, one totaling $1.1 billion and one totaling $1.0 billion of consolidated Operating Revenues and Other in the United States segment.

[2] 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, 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).