Segment Information (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Schedule of Segment Reporting Information By Segment [Abstract]
Net Operating Revenues and Other		$ 2,644,844	$ 2,118,504	$ 7,867,881	$ 5,248,593
Operating Income (Loss)		214,836	(193,480)	450,490	(1,119,794)
Other Income (Expense), Net		226	(7,912)	8,349	(33,345)
Interest Expense, Net		69,082	70,858	211,010	210,356
Income (Loss) Before Income Taxes		145,980	(272,250)	247,829	(1,363,495)
Total Assets		28,805,305		28,805,305		$ 29,299,201
United States [Member]
Schedule of Segment Reporting Information By Segment [Abstract]
Net Operating Revenues and Other		2,569,867	2,023,130	7,620,601	5,007,119
Operating Income (Loss)		207,173	(193,453)	457,018	(1,099,030)
Total Assets		27,340,156		27,340,156		27,746,851
Trinidad [Member]
Schedule of Segment Reporting Information By Segment [Abstract]
Net Operating Revenues and Other		63,800	57,937	210,022	183,461
Operating Income (Loss)		21,739	15,688	70,512	41,620
Total Assets		939,776		939,776		889,253
Other International [Member]
Schedule of Segment Reporting Information By Segment [Abstract]
Net Operating Revenues and Other	[1]	11,177	37,437	37,258	58,013
Operating Income (Loss)	[1]	(14,076)	$ (15,715)	(77,040)	$ (62,384)
Total Assets	[1]	$ 525,373		$ 525,373		$ 663,097

[1] Other International primarily consists of EOG's United Kingdom, China, Canada and Argentina operations. The Argentina operations were sold in the third quarter of 2016.