v2.4.0.6

Risk Management Activities (Details) (USD $) | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Crude Oil and Natural Gas Derivative Contracts [Member] Liabilities From Price Risk Management Activities [Member] | Dec. 31, 2011 Crude Oil and Natural Gas Derivative Contracts [Member] Liabilities From Price Risk Management Activities [Member] | Dec. 31, 2012 Crude Oil and Natural Gas Derivative Contracts [Member] Assets From Price Risk Management Activities [Member] | Dec. 31, 2011 Crude Oil and Natural Gas Derivative Contracts [Member] Assets From Price Risk Management Activities [Member] | Dec. 31, 2012 Crude Oil and Natural Gas Derivative Contracts [Member] Other Assets [Member] | Dec. 31, 2011 Crude Oil and Natural Gas Derivative Contracts [Member] Other Assets [Member] | Dec. 31, 2012 Crude Oil and Natural Gas Derivative Contracts [Member] Other Liabilities [Member] | Dec. 31, 2011 Crude Oil and Natural Gas Derivative Contracts [Member] Other Liabilities [Member] | Dec. 31, 2012 Interest Rate Swap [Member] Other Liabilities [Member] | Dec. 31, 2011 Interest Rate Swap [Member] Other Liabilities [Member] | Dec. 31, 2012 Foreign Currency Swap [Member] Other Liabilities [Member] | Dec. 31, 2011 Foreign Currency Swap [Member] Other Liabilities [Member] | Dec. 31, 2013 Crude Oil Derivative Contracts January - June [Member] | Dec. 31, 2013 Natural Gas Derivative Contracts January [Member] Btu | Dec. 31, 2013 Natural Gas Derivative Contracts February - December [Member] Btu | Dec. 31, 2014 Natural Gas Derivative Contracts Year Two January - December [Member] | Dec. 31, 2014 Crude Oil Derivative Contracts January - June Year Two [Member] | Dec. 31, 2013 Crude Oil Derivative Contracts July - December [Member]
Notes To Financial Statements [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Gains on Mark-to-Market Commodity Derivative Contracts | $ 393,744,000 | $ 626,053,000 | $ 61,912,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Realized Gains | 711,479,000 | 180,701,000 | 7,033,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Volume (MMBtu) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 150,000 | 150,000 |  |  |
Volume (Bbld) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 101,000 |  |  |  |  | 93,000
Volumes (MMBtud) - Derivative Option Contracts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 150,000 | 150,000 |  |
Average Price ($/MMBtu) - Derivative Option Contracts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.79 | 4.79 |  |
Derivative Weighted Average Price Crude Oil ($/Bbl) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 99.29 |  |  |  |  | 98.44
Derivative Weighted Average Price Natural Gas ($/MMBtu) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.79 | 4.79 |  |  |
Volumes (Bbld) - Derivative Option Contracts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 54,000 | 62,000
Average Price ($/Bbl) - Derivative Option Contracts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 98.91 | 100.24
Proceeds from financial derivative contracts settled during the period | 36,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Receivable Major Customer Percentage | 26.00% | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives Assets, Current | 166,135,000 | 450,730,000 |  |  |  | 166,000,000 | 451,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Assets |  |  |  |  |  |  |  | 0 | 35,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Derivative Liabilities, Current | 7,617,000 | 0 |  | 8,000,000 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Liabilities |  |  |  |  |  |  |  |  |  | 13,000,000 | 0 | 4,000,000 | 3,000,000 | 55,000,000 | 52,000,000 |  |  |  |  |  |
Foreign Currency Exchange Rate Derivative [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Issued by EOG's Canadian Subsidiary | 150,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
After-Tax Net Impact Other Comprehensive Income Increase (Decrease) From The Foreign Currency Swap | 1,000,000 | (1,000,000) | 3,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Rate Derivative [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Rate Swap, Notional Amount | 350,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
After-Tax Net Impact Other Comprehensive Income Increase (Decrease) From Interest Rate Swap | (100,000) | (3,000,000) | 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Collateral [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateral Held on Derivative | $ 6,000,000 | $ 67,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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