Oil and Gas Exploration and Production Industries Disclosures, Costs Incurred (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Acquisition Costs of Properties - Unproved		$ 133,857		$ 370,414		$ 414,121
Acquisition Costs of Properties - Proved		480,617		139,101		120,214
Subtotal		614,474		509,515		534,335
Exploration Costs		252,692		395,973		377,179
Development Costs		4,061,117		6,999,281		6,086,377
Total		4,928,283		7,904,769		6,997,891
United States
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Acquisition Costs of Properties - Unproved		133,801		365,915		411,556
Acquisition Costs of Properties - Proved		480,617		138,772		120,220
Subtotal		614,418		504,687		531,776
Exploration Costs		206,814		332,703		273,788
Development Costs		3,847,813	[1]	6,638,192	[2]	5,573,260	[3]
Total		4,669,045		7,475,582		6,378,824
Trinidad
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Acquisition Costs of Properties - Unproved		0		0		0
Acquisition Costs of Properties - Proved		0		0		0
Subtotal		0		0		0
Exploration Costs		22,837		2,794		16,060
Development Costs		102,715	[1]	89,555	[2]	124,231	[3]
Total		125,552		92,349		140,291
Other International
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]
Acquisition Costs of Properties - Unproved	[4]	56		4,499		2,565
Acquisition Costs of Properties - Proved	[4]	0		329		(6)
Subtotal	[4]	56		4,828		2,559
Exploration Costs	[4]	23,041		60,476		87,331
Development Costs	[4]	110,589	[1]	271,534	[2]	388,886	[3]
Total	[4]	$ 133,686		$ 336,838		$ 478,776

[1] Includes Asset Retirement Costs of $32 million, $15 million and $6 million for the United States, Trinidad and Other International, respectively. Excludes other property, plant and equipment.

[2] Includes Asset Retirement Costs of $149 million, $14 million and $33 million for the United States, Trinidad and Other International, respectively. Excludes other property, plant and equipment.

[3] Includes Asset Retirement Costs of $84 million and $50 million for the United States and Other International, respectively. Excludes other property, plant and equipment.

[4] Other International primarily consists of EOG's United Kingdom, China, Canada and Argentina operations.