Oil and Gas Exploration and Production Industries Disclosures, Average Sales Price (Details)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Production costs per barrel of oil equivalent	6.46		5.88		5.85
United States [Member]
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Production costs per barrel of oil equivalent	6.44		5.78		5.96
Canada [Member]
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Production costs per barrel of oil equivalent	24.76		19.98		16.42
Trinidad [Member]
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Production costs per barrel of oil equivalent	1.34		1.36		0.98
Other International [Member]
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Production costs per barrel of oil equivalent	22.83	[1]	26.77	[1]	18.97	[1]

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