Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2014
Schedule of Segment Reporting Information By Segment [Abstract]
Net Operating Revenues	$ 2,318,538		$ 4,083,671
Operating Income (Loss)	(172,995)		1,084,279
Other Expense, Net	(9,991)		(3,338)
Interest Expense, Net	(53,345)		(50,152)
Income (Loss) Before Income Taxes	(236,331)		1,030,789
Total Assets	34,692,454				34,762,687
United States [Member]
Schedule of Segment Reporting Information By Segment [Abstract]
Net Operating Revenues	2,212,582		3,852,065
Operating Income (Loss)	(181,856)		1,041,021
Total Assets	32,843,772				32,871,398
Trinidad [Member]
Schedule of Segment Reporting Information By Segment [Abstract]
Net Operating Revenues	96,562		136,733
Operating Income (Loss)	46,980		74,315
Total Assets	910,740				865,674
Other International [Member]
Schedule of Segment Reporting Information By Segment [Abstract]
Net Operating Revenues	9,394	[1]	94,873	[1]
Operating Income (Loss)	(38,119)	[1]	(31,057)	[1]
Total Assets	$ 937,942	[1]			$ 1,025,615	[1]

[1] Other International primarily includes EOG's Canada, United Kingdom, China and Argentina operations.