Risk Management Activities (Details) (USD $)																					3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Crude Oil and Natural Gas Derivative Contracts [Member] Assets From Price Risk Management Activities [Member]		Dec. 31, 2013 Crude Oil and Natural Gas Derivative Contracts [Member] Assets From Price Risk Management Activities [Member]		Mar. 31, 2014 Crude Oil and Natural Gas Derivative Contracts [Member] Liabilities From Price Risk Management Activities [Member]		Dec. 31, 2013 Crude Oil and Natural Gas Derivative Contracts [Member] Liabilities From Price Risk Management Activities [Member]		Mar. 31, 2014 Crude Oil and Natural Gas Derivative Contracts [Member] Other Assets [Member]		Dec. 31, 2013 Crude Oil and Natural Gas Derivative Contracts [Member] Other Assets [Member]	Mar. 31, 2014 Crude Oil and Natural Gas Derivative Contracts [Member] Other Liabilities [Member]		Dec. 31, 2013 Crude Oil and Natural Gas Derivative Contracts [Member] Other Liabilities [Member]	Mar. 31, 2014 Foreign Currency Swap [Member] Other Current Liabilities [Member]	Dec. 31, 2013 Foreign Currency Swap [Member] Other Current Liabilities [Member]	Mar. 31, 2014 Interest Rate Swap [Member] Other Current Liabilities [Member]	Dec. 31, 2013 Interest Rate Swap [Member] Other Current Liabilities [Member]	Mar. 31, 2014 Crude Oil Derivative Contracts January (closed) [Member] bbl	Mar. 31, 2014 Crude Oil Derivative Contracts February (closed) [Member] bbl	Mar. 31, 2014 Crude Oil Derivative Contracts March (closed) [Member] bbl	Mar. 31, 2014 Crude Oil Derivative Contracts April - May [Member] bbl		Mar. 31, 2014 Crude Oil Derivative Contracts June [Member] bbl		Mar. 31, 2014 Crude Oil Derivative Contracts June - August [Member] bbl		Mar. 31, 2014 Crude Oil Derivative Contracts July - December [Member] bbl		Mar. 31, 2014 Crude Oil Derivative Contracts Year Two [Member] bbl		Mar. 31, 2014 Crude Oil Derivative Contracts Year Two January - June [Member] bbl		Mar. 31, 2014 Natural Gas Derivative Contracts January (closed) [Member] MMBTU	Mar. 31, 2014 Natural Gas Derivative Contracts February (closed) [Member] MMBTU	Mar. 31, 2014 Natural Gas Derivative Contracts March (closed) [Member] MMBTU	Mar. 31, 2014 Natural Gas Derivative Contracts April (closed) [Member] MMBTU	Mar. 31, 2014 Natural Gas Derivative Contracts May - December [Member] MMBTU		Mar. 31, 2014 Natural Gas Derivative Contracts Year Two January - December [Member] MMBTU
Derivative [Line Items]
Volume (Bbld)																					156,000	171,000	181,000	181,000	[1]	171,000	[1]			74,000	[1]	0	[1]
Derivative Weighted Average Price Crude Oil ($/Bbl)																					96.30	96.35	96.55	96.55	[1]	96.35	[1]			95.37	[1]	0	[1]
Volumes (Bbld) - Derivative Option Contracts																												10,000	[1]	118,000	[1]			69,000	[2]
Average Price ($/Bbl) - Derivative Option Contracts																												100.00	[1]	96.64	[1]			95.20	[2]
Volume (MMBtud)																																				230,000	710,000	810,000	465,000	330,000	[3]	175,000	[4]
Derivative Weighted Average Price Natural Gas ($/MMBtu)																																				4.51	4.57	4.60	4.52	4.55	[3]	4.51	[4]
Volumes (MMBtud) - Derivative Option Contracts																																								480,000	[3]	175,000	[4]
Average Price ($/MMBtu) - Derivative Option Contracts																																								4.63	[3]	4.51	[4]
Derivatives, Fair Value [Line Items]
Derivative Assets, Current	$ 0	$ 8,260,000	$ 0		$ 8,000,000	[5]
Other Assets											12,000,000	[6]	0
Derivative Liabilities, Current	227,036,000	127,542,000					227,000,000	[7]	127,000,000	[7]							0	40,000,000	0	1,000,000
Other Liabilities														0	[8]	0
Derivative Assets, Current, Gross			18,000,000	[5]					10,000,000	[5]
Derivative Assets, Noncurrent, Gross											21,000,000	[6]		9,000,000	[8]
Derivative Liabilities, Current, Gross					10,000,000	[7]	227,000,000	[7]	137,000,000	[7]
Derivative Liabilities, Noncurrent, Gross											9,000,000	[6]		9,000,000	[8]
Interest Rate Derivative [Abstract]
Interest Rate Swap, Notional Amount	$ 350,000,000

[1] EOG has entered into crude oil derivative contracts which give counterparties the option to extend certain current derivative contracts for additional three-month and six-month periods. Options covering a notional volume of 10,000 Bbld are exercisable on or about May 30, 2014. If the counterparties exercise all such options, the notional volume of EOG's existing crude oil derivative contracts will increase by 10,000 Bbld at an average price of $100.00 per barrel for each month during the period June 1, 2014 through August 31, 2014. Options covering a notional volume of 118,000 Bbld are exercisable on or about June 30, 2014. If the counterparties exercise all such options, the notional volume of EOG's existing crude oil derivative contracts will increase by 118,000 Bbld at an average price of $96.64 per barrel for each month during the period July 1, 2014 through December 31, 2014.

[2] EOG has entered into crude oil derivative contracts which give counterparties the option to extend certain current derivative contracts for additional six-month periods. Options covering a notional volume of 69,000 Bbld are exercisable on or about December 31, 2014. If the counterparties exercise all such options, the notional volume of EOG's existing crude oil derivative contracts will increase by 69,000 Bbld at an average price of $95.20 per barrel for each month during the period January 1, 2015 through June 30, 2015.

[3] EOG has entered into natural gas derivative contracts which give counterparties the option of entering into derivative contracts at future dates. All such options are exercisable monthly up until the settlement date of each monthly contract. If the counterparties exercise all such options, the notional volume of EOG's existing natural gas derivative contracts will increase by 480,000 MMBtud at an average price of $4.63 per MMBtu for each month during the period May 1, 2014 through December 31, 2014.

[4] EOG has entered into natural gas derivative contracts which give counterparties the option of entering into derivative contracts at future dates. All such options are exercisable monthly up until the settlement date of each monthly contract. If the counterparties exercise all such options, the notional volume of EOG's existing natural gas derivative contracts will increase by 175,000 MMBtud at an average price of $4.51 per MMBtu for each month during the period January 1, 2015 through December 31, 2015.

[5] The current portion of Assets from Price Risk Management Activities consists of gross assets of $18 million, partially offset by gross liabilities of $10 million at December 31, 2013.

[6] The noncurrent portion of Assets from Price Risk Management Activities consists of gross assets of $21 million, partially offset by gross liabilities of $9 million at March 31, 2014.

[7] The current portion of Liabilities from Price Risk Management Activities consists of gross liabilities of $227 million at March 31, 2014 and gross liabilities of $137 million, partially offset by gross assets of $10 million at December 31, 2013.

[8] The noncurrent portion of Liabilities from Price Risk Management Activities consists of gross liabilities of $9 million, offset by gross assets of $9 million at March 31, 2014.