EOG Resources (EOG) 10-Q 5 Nov 15 2015 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Oct. 29, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	EOG RESOURCES INC
Entity Central Index Key	821,189
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		549,707,193
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2015

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net Operating Revenues
Crude Oil and Condensate	$ 1,181,092	$ 2,671,502	$ 3,894,092	$ 7,687,579
Natural Gas Liquids	95,217	258,927	311,137	753,135
Natural Gas	281,837	443,108	843,657	1,508,892
Gains on Mark-to-Market Commodity Derivative Contracts	29,239	469,125	56,954	84,119
Gathering, Processing and Marketing	572,217	1,196,933	1,820,843	3,240,139
Gains (Losses) on Asset Dispositions, Net	(1,185)	60,346	(5,142)	75,700
Other, Net	14,011	18,675	39,126	40,279
Total	2,172,428	5,118,616	6,960,667	13,389,843
Operating Expenses
Lease and Well	283,221	368,340	934,366	1,035,632
Transportation Costs	203,594	246,067	641,739	729,883
Gathering and Processing Costs	35,497	41,621	106,503	108,015
Exploration Costs	31,344	48,955	114,548	139,221
Dry Hole Costs	198	16,359	14,317	30,265
Impairments	6,307,420	55,542	6,445,375	207,938
Marketing Costs	615,303	1,213,652	1,924,134	3,263,471
Depreciation, Depletion and Amortization	722,172	1,040,018	2,544,187	2,983,111
General and Administrative	90,959	96,931	257,580	270,725
Taxes Other Than Income	105,677	204,969	334,244	606,411
Total	8,395,385	3,332,454	13,316,993	9,374,672
Operating Income (Loss)	(6,222,957)	1,786,162	(6,356,326)	4,015,171
Other Income (Expense), Net	8,607	(21,338)	7,996	(16,726)
Income (Loss) Before Interest Expense and Income Taxes	(6,214,350)	1,764,824	(6,348,330)	3,998,445
Interest Expense
Interest Expense, Net	60,571	49,704	174,400	151,723
Income (Loss) Before Income Taxes	(6,274,921)	1,715,120	(6,522,730)	3,846,722
Income Tax Provision (Benefit)	(2,199,182)	611,502	(2,282,511)	1,375,823
Net Income (Loss)	$ (4,075,739)	$ 1,103,618	$ (4,240,219)	$ 2,470,899
Net Income (Loss) Per Share
Basic	$ (7.47)	$ 2.03	$ (7.77)	$ 4.55
Diluted	(7.47)	2.01	(7.77)	4.51
Dividends Declared per Common Share	$ 0.1675	$ 0.1675	$ 0.5025	$ 0.4175
Average Number of Common Shares
Basic	545,920	543,984	545,466	543,086
Diluted	545,920	549,518	545,466	548,401
Comprehensive Income (Loss)
Net Income (Loss)	$ (4,075,739)	$ 1,103,618	$ (4,240,219)	$ 2,470,899
Other Comprehensive Income (Loss)
Foreign Currency Translation Adjustments	(7,004)	(38,886)	(11,767)	(27,438)
Other	28	23	(156)	(671)
Other Comprehensive Loss	(6,976)	(38,863)	(11,923)	(28,109)
Comprehensive Income (Loss)	$ (4,082,715)	$ 1,064,755	$ (4,252,142)	$ 2,442,790

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current Assets
Cash and Cash Equivalents	$ 742,689	$ 2,087,213
Accounts Receivable, Net	1,123,111	1,779,311
Inventories	660,252	706,597
Assets from Price Risk Management Activities	71,503	465,128
Income Taxes Receivable	53,667	71,621
Deferred Income Taxes	40,619	19,618
Other	133,117	286,533
Total	2,824,958	5,416,021
Property, Plant and Equipment
Oil and Gas Properties (Successful Efforts Method)	50,025,191	46,503,532
Other Property, Plant and Equipment	3,890,934	3,750,958
Total Property, Plant and Equipment	53,916,125	50,254,490
Less: Accumulated Depreciation, Depletion and Amortization	(29,640,793)	(21,081,846)
Total Property, Plant and Equipment, Net	24,275,332	29,172,644
Other Assets	176,957	174,022
Total Assets	27,277,247	34,762,687
Current Liabilities
Accounts Payable	1,561,574	2,860,548
Accrued Taxes Payable	174,897	140,098
Dividends Payable	91,377	91,594
Deferred Income Taxes	0	110,743
Short-Term Borrowings and Current Portion of Long-Term Debt	36,279	6,579
Other	182,834	174,746
Total	2,046,961	3,384,308
Long-Term Debt	6,393,931	5,903,354
Other Liabilities	970,288	939,497
Deferred Income Taxes	$ 4,581,844	$ 6,822,946
Commitments and Contingencies (Note 8)
Stockholders' Equity
Common Stock, $0.01 Par, 640,000,000 Shares Authorized and 550,052,879 Shares Issued at September 30, 2015 and 549,028,374 Shares Issued at December 31, 2014	$ 205,503	$ 205,492
Additional Paid in Capital	2,897,439	2,837,150
Accumulated Other Comprehensive Loss	(34,979)	(23,056)
Retained Earnings	10,247,349	14,763,098
Common Stock Held in Treasury, 383,870 Shares at September 30, 2015 and 733,517 Shares at December 31, 2014	(31,089)	(70,102)
Total Stockholders' Equity	13,284,223	17,712,582
Total Liabilities and Stockholders' Equity	$ 27,277,247	$ 34,762,687

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2015	Dec. 31, 2014
Common Stock
Common Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized (in shares)	640,000,000	640,000,000
Common Stock, Shares Issued (in shares)	550,052,879	549,028,374
Treasury Stock (in shares)
Common Stock Held in Treasury, Shares	383,870	733,517

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash Flows from Operating Activities
Net Income (Loss)	$ (4,240,219)	$ 2,470,899
Items Not Requiring (Providing) Cash
Depreciation, Depletion and Amortization	2,544,187	2,983,111
Impairments	6,445,375	207,938
Stock-Based Compensation Expenses	101,926	103,636
Deferred Income Taxes	(2,377,030)	974,522
(Gains) Losses on Asset Dispositions, Net	5,142	(75,700)
Other, Net	3,735	17,188
Dry Hole Costs	14,317	30,265
Mark-to-Market Commodity Derivative Contracts
Total Gains	(56,954)	(84,119)
Net Cash Received from (Payments for) Settlements of Commodity Derivative Contracts	661,021	(188,937)
Excess Tax Benefits from Stock-Based Compensation	(24,219)	(87,827)
Other, Net	8,904	8,701
Changes in Components of Working Capital and Other Assets and Liabilities
Accounts Receivable	448,311	(341,043)
Inventories	27,007	(119,166)
Accounts Payable	(1,310,211)	566,753
Accrued Taxes Payable	77,575	176,412
Other Assets	146,965	(61,966)
Other Liabilities	(15,683)	66,618
Changes in Components of Working Capital Associated with Investing and Financing Activities	519,203	(108,568)
Net Cash Provided by Operating Activities	2,979,352	6,538,717
Investing Cash Flows
Additions to Oil and Gas Properties	(3,918,065)	(5,653,035)
Additions to Other Property, Plant and Equipment	(252,295)	(587,178)
Proceeds from Sales of Assets	144,285	91,335
Changes in Restricted Cash	0	(91,238)
Changes in Components of Working Capital Associated with Investing Activities	(519,323)	108,999
Net Cash Used in Investing Activities	(4,545,398)	(6,131,117)
Financing Cash Flows
Net Commercial Paper Borrowings	29,700	0
Long-Term Debt Borrowings	990,225	496,220
Long-Term Debt Repayments	(500,000)	(500,000)
Settlement of Foreign Currency Swap	0	(31,573)
Dividends Paid	(274,577)	(187,670)
Excess Tax Benefits from Stock-Based Compensation	24,219	87,827
Treasury Stock Purchased	(43,419)	(114,824)
Proceeds from Stock Options Exercised and Employee Stock Purchase Plan	14,967	11,740
Debt Issuance Costs	(5,933)	(895)
Repayment of Capital Lease Obligation	(4,599)	(4,457)
Other, Net	120	(431)
Net Cash Provided by (Used in) Financing Activities	230,703	(244,063)
Effect of Exchange Rate Changes on Cash	(9,181)	(601)
Increase (Decrease) in Cash and Cash Equivalents	(1,344,524)	162,936
Cash and Cash Equivalents at Beginning of Period	2,087,213	1,318,209
Cash and Cash Equivalents at End of Period	$ 742,689	$ 1,481,145

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies [Text Block]	Summary of Significant Accounting Policies General. The consolidated financial statements of EOG Resources, Inc., together with its subsidiaries (collectively, EOG), included herein have been prepared by management without audit pursuant to the rules and regulations of the United States Securities and Exchange Commission (SEC). Accordingly, they reflect all normal recurring adjustments which are, in the opinion of management, necessary for a fair presentation of the financial results for the interim periods presented. Certain information and notes normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) have been condensed or omitted pursuant to such rules and regulations. However, management believes that the disclosures included either on the face of the financial statements or in these notes are sufficient to make the interim information presented not misleading. These consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in EOG's Annual Report on Form 10-K for the year ended December 31, 2014 , filed on February 18, 2015 (EOG's 2014 Annual Report). The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The operating results for the three and nine months ended September 30, 2015 , are not necessarily indicative of the results to be expected for the full year. Recently Issued Accounting Standards. In July 2015, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2015-11, "Accounting for Inventory" (ASU 2015-11), which requires entities to measure most inventory at lower of cost or net realizable value. ASU 2015-11 defines net realizable value as "the estimated selling prices in the ordinary course of business, less reasonably predictable cost of completion, disposal and transportation." ASU 2015-11 is effective prospectively for interim and annual periods beginning after December 15, 2016. EOG is reviewing the requirements of the new standard and does not believe that the adoption of ASU 2015-11 will have a material impact on its consolidated financial statements and related disclosures. In April 2015, the FASB issued ASU 2015-03, "Interest - Computation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs" (ASU 2015-03), which changes the presentation of debt issuance costs in financial statements. Under ASU 2015-03, an entity will present debt issuance costs in the balance sheet as a direct reduction from the related debt liability rather than as an asset. Amortization of such costs will be presented as a component of interest expense. ASU 2015-03 is effective for interim and annual reporting periods beginning after December 15, 2015. Early adoption is permitted. Because ASU 2015-03 does not address debt issuance costs related to line-of-credit arrangements, in August 2015, the FASB issued ASU 2015-15 "Interest - Computation of Interest (Subtopic 835-30): Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements" (ASU 2015-15). ASU 2015-15 provides that, in the absence of authoritative guidance in ASU 2015-03, the SEC would not object to an entity deferring and presenting debt issuance costs related to a line-of-credit arrangement as an asset and subsequently amortizing the deferred debt issuance costs over the term of the line-of-credit arrangement. EOG does not expect the adoption of ASU 2015-03 and ASU 2015-15 to have a material impact on its consolidated financial statements and related disclosures. In May 2014, the FASB issued ASU 2014-09, "Revenue From Contracts With Customers" (ASU 2014-09), which will require entities to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 will supersede most current guidance related to revenue recognition when it becomes effective. The new standard also will require expanded disclosures regarding the nature, amount, timing and certainty of revenue and cash flows from contracts with customers. The FASB originally intended ASU 2014-09 to be effective for interim and annual reporting periods beginning after December 15, 2016 and permits adoption through the use of either the full retrospective approach or a modified retrospective approach. In July 2015, the FASB issued an update which delays by one year the effective date of ASU 2014-09 and allows for early adoption as of the original effective date. EOG has not determined which transition method it will use and is continuing to analyze ASU 2014-09 to determine what impact the new standard will have on its consolidated financial statements and related disclosures.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation [Text Block]	Stock-Based Compensation As more fully discussed in Note 7 to the Consolidated Financial Statements included in EOG's 2014 Annual Report, EOG maintains various stock-based compensation plans. Stock-based compensation expense is included on the Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) based upon the job function of the employees receiving the grants as follows (in millions): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Lease and Well $ 10.3 $ 9.7 $ 32.9 $ 30.4 Gathering and Processing Costs 0.4 0.4 1.0 0.9 Exploration Costs 6.0 6.7 19.3 20.2 General and Administrative 23.6 21.7 48.8 52.1 Total $ 40.3 $ 38.5 $ 102.0 $ 103.6 The Amended and Restated EOG Resources, Inc. 2008 Omnibus Equity Compensation Plan (2008 Plan) provides for grants of stock options, stock-settled stock appreciation rights (SAR), restricted stock and restricted stock units, performance units and performance stock and other stock-based awards. At September 30, 2015 , approximately 24.6 million common shares remained available for grant under the 2008 Plan. EOG's policy is to issue shares related to the 2008 Plan from either previously authorized unissued shares or treasury shares to the extent treasury shares are available. Stock Options and Stock-Settled Stock Appreciation Rights and Employee Stock Purchase Plan . The fair value of stock option grants and SAR grants is estimated using the Hull-White II binomial option pricing model. The fair value of Employee Stock Purchase Plan (ESPP) grants is estimated using the Black-Scholes-Merton model. Stock-based compensation expense related to stock option, SAR and ESPP grants totaled $20.0 million and $21.2 million during the three months ended September 30, 2015 and 2014 , respectively, and $43.3 million and $44.9 million during the nine months ended September 30, 2015 and 2014 , respectively. Weighted average fair values and valuation assumptions used to value stock option, SAR and ESPP grants during the nine -month periods ended September 30, 2015 and 2014 are as follows: Stock Options/SARs ESPP Nine Months Ended Nine Months Ended 2015 2014 2015 2014 Weighted Average Fair Value of Grants $ 21.87 $ 30.77 $ 21.40 $ 21.27 Expected Volatility 38.04 % 35.25 % 32.54 % 25.12 % Risk-Free Interest Rate 0.83 % 0.95 % 0.12 % 0.08 % Dividend Yield 0.85 % 0.60 % 0.72 % 0.50 % Expected Life 5.3 years 5.2 years 0.5 years 0.5 years Expected volatility is based on an equal weighting of historical volatility and implied volatility from traded options in EOG's common stock. The risk-free interest rate is based upon United States Treasury yields in effect at the time of grant. The expected life is based upon historical experience and contractual terms of stock option, SAR and ESPP grants. The following table sets forth stock option and SAR transactions for the nine -month periods ended September 30, 2015 and 2014 (stock options and SARs in thousands): Nine Months Ended Nine Months Ended Number of Stock Options/SARs Weighted Average Grant Price Number of Stock Options/SARs Weighted Average Grant Price Outstanding at January 1 10,493 $ 64.96 10,452 $ 54.43 Granted 2,029 69.95 2,122 101.65 Exercised (1) (1,291 ) 47.25 (1,351 ) 44.52 Forfeited (203 ) 80.12 (226 ) 62.95 Outstanding at September 30 (2) 11,028 $ 67.67 10,997 $ 64.58 Vested or Expected to Vest (3) 10,653 $ 67.22 10,568 $ 63.92 Exercisable at September 30 (4) 6,121 $ 57.34 5,573 $ 49.23 (1) The total intrinsic value of stock options/SARs exercised for the nine months ended September 30, 2015 and 2014 was $ 52.4 million and $ 78.0 million , respectively. The intrinsic value is based upon the difference between the market price of EOG's common stock on the date of exercise and the grant price of the stock options/SARs. (2) The total intrinsic value of stock options/SARs outstanding at September 30, 2015 and 2014 was $ 136.9 million and $ 384.9 million , respectively. At September 30, 2015 and 2014 , the weighted average remaining contractual life was 4.4 years and 4.6 years, respectively. (3) The total intrinsic value of stock options/SARs vested or expected to vest at September 30, 2015 and 2014 was $ 135.7 million and $376.6 million , respectively. At September 30, 2015 and 2014 , the weighted average remaining contractual life was 4.3 years and 4.5 years, respectively. (4) The total intrinsic value of stock options/SARs exercisable at September 30, 2015 and 2014 was $ 121.6 million and $277.5 million , respectively. At September 30, 2015 and 2014 , the weighted average remaining contractual life was 3.1 years and 3.3 years, respectively. At September 30, 2015 , unrecognized compensation expense related to non-vested stock option, SAR and ESPP grants totaled $ 112.2 million . Such unrecognized expense will be amortized on a straight-line basis over a weighted average period of 3.0 years. Restricted Stock and Restricted Stock Units. Employees may be granted restricted (non-vested) stock and/or restricted stock units without cost to them. Stock-based compensation expense related to restricted stock and restricted stock units totaled $ 16.2 million and $13.9 million for the three months ended September 30, 2015 and 2014 , respectively, and $ 53.9 million and $53.4 million for the nine months ended September 30, 2015 and 2014 , respectively. The following table sets forth restricted stock and restricted stock unit transactions for the nine -month periods ended September 30, 2015 and 2014 (shares and units in thousands): Nine Months Ended Nine Months Ended Number of Shares and Units Weighted Average Grant Date Fair Value Number of Shares and Units Weighted Average Grant Date Fair Value Outstanding at January 1 5,394 $ 64.39 7,358 $ 49.54 Granted 1,036 77.90 1,024 99.00 Released (1) (1,250 ) 51.02 (2,540 ) 37.92 Forfeited (152 ) 74.83 (220 ) 59.36 Outstanding at September 30 (2) 5,028 $ 70.18 5,622 $ 63.41 (1) The total intrinsic value of restricted stock and restricted stock units released for the nine months ended September 30, 2015 and 2014 was $102.5 million and $270.0 million , respectively. The intrinsic value is based upon the closing price of EOG's common stock on the date the restricted stock and restricted stock units are released. (2) The total intrinsic value of restricted stock and restricted stock units outstanding at September 30, 2015 and 2014 was $366.0 million and $556.7 million , respectively. At September 30, 2015 , unrecognized compensation expense related to restricted stock and restricted stock units totaled $194.5 million . Such unrecognized expense will be amortized on a straight-line basis over a weighted average period of 2.7 years. Performance Units and Performance Stock. EOG grants performance units and/or performance stock to its executive officers. The fair value of the performance units and performance stock is estimated using a Monte Carlo simulation. Stock-based compensation expense related to performance unit and performance stock grants totaled $4.1 million and $3.4 million for the three months ended September 30, 2015 and 2014 , respectively, and $4.8 million and $5.3 million for the nine months ended September 30, 2015 and 2014 , respectively. Weighted average fair values and valuation assumptions used to value performance unit and performance stock grants during the nine-month periods ended September 30, 2015 and 2014 are as follows: Nine Months Ended 2015 2014 Weighted Average Fair Value of Grants $ 80.64 $ 119.27 Expected Volatility 29.35 % 32.18 % Risk-Free Interest Rate 1.07 % 1.18 % Expected volatility is based on the term-matched historical volatility over the simulated term, which is calculated as the time between the grant date and the end of the performance period. The risk-free interest rate is based on a 3.26 year zero-coupon risk-free interest rate derived from the Treasury Constant Maturities yield curve on the grant date. The following table sets forth performance unit and performance stock transactions for the nine -month periods ended September 30, 2015 and 2014 (shares and units in thousands): Nine Months Ended Nine Months Ended Number of Shares and Units Weighted Average Grant Date Fair Value Number of Shares and Units Weighted Average Grant Date Fair Value Outstanding at January 1 333 $ 90.17 261 $ 82.18 Granted 72 80.64 72 119.27 Released — — — — Forfeited — — — — Outstanding at September 30 (1) 405 $ 88.48 333 $ 90.17 (1) The total intrinsic value of performance units and performance stock outstanding at September 30, 2015 and 2014 was $ 29.5 million and $33.0 million , respectively. At September 30, 2015 , unrecognized compensation expense related to performance units and performance stock totaled $6.4 million . Such unrecognized expense will be amortized on a straight-line basis over a weighted average period of 3.5 years.

Net Income (Loss) Per Share

Net Income (Loss) Per Share	9 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
Net Income (Loss) Per Share [Text Block]	Net Income (Loss) Per Share The following table sets forth the computation of Net Income (Loss) Per Share for the three-month and nine -month periods ended September 30, 2015 and 2014 (in thousands, except per share data): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Numerator for Basic and Diluted Earnings Per Share - Net Income (Loss) $ (4,075,739 ) $ 1,103,618 $ (4,240,219 ) $ 2,470,899 Denominator for Basic Earnings Per Share - Weighted Average Shares 545,920 543,984 545,466 543,086 Potential Dilutive Common Shares - Stock Options/SARs — 2,760 — 2,644 Restricted Stock/Units and Performance Units/Stock — 2,774 — 2,671 Denominator for Diluted Earnings Per Share - Adjusted Diluted Weighted Average Shares 545,920 549,518 545,466 548,401 Net Income (Loss) Per Share Basic $ (7.47 ) $ 2.03 $ (7.77 ) $ 4.55 Diluted $ (7.47 ) $ 2.01 $ (7.77 ) $ 4.51 The diluted earnings per share calculation excludes stock options, SARs, restricted stock and units and performance units and stock that were anti-dilutive. Shares underlying the excluded stock options and SARs totaled 9.8 million and 0.2 million shares for the three months ended September 30, 2015 and 2014 , respectively, and 10.0 million and 0.2 million shares for the nine months ended September 30, 2015 and 2014 , respectively. For both the three months and nine months ended September 30, 2015 , 5.4 million shares of restricted stock and restricted stock units and performance units and performance stock were excluded.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	9 Months Ended
	Sep. 30, 2015
Supplemental Cash Flow Information [Abstract]
Supplemental Cash Flow Information [Text Block]	Supplemental Cash Flow Information Net cash paid for interest and income taxes was as follows for the nine -month periods ended September 30, 2015 and 2014 (in thousands): Nine Months Ended 2015 2014 Interest (1) $ 152,590 $ 143,615 Income Taxes, Net of Refunds Received $ 69,281 $ 330,476 (1) Net of capitalized interest of $33 million and $43 million for the nine months ended September 30, 2015 and 2014 , respectively. EOG's accrued capital expenditures at September 30, 2015 and 2014 were $437 million and $960 million , respectively.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2015
Segment Reporting [Abstract]
Segment Information [Text Block]	Segment Information As more fully discussed in Note 13, during the fourth quarter of 2014, EOG completed the sale of substantially all of its Canadian operations. As a result, information related to EOG's remaining Canadian operations have been included in the Other International segment and prior year amounts have been reclassified to conform to current year presentation. Selected financial information by reportable segment is presented below for the three -month and nine -month periods ended September 30, 2015 and 2014 (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Net Operating Revenues United States $ 2,040,881 $ 4,924,226 $ 6,622,781 $ 12,748,128 Trinidad 98,493 123,154 290,758 398,140 Other International (1) 33,054 71,236 47,128 243,575 Total $ 2,172,428 $ 5,118,616 $ 6,960,667 $ 13,389,843 Operating Income (Loss) United States $ (6,110,284 ) $ 1,767,044 $ (6,271,908 ) $ 3,900,263 Trinidad 46,230 61,328 139,116 209,785 Other International (1) (158,903 ) (42,210 ) (223,534 ) (94,877 ) Total (6,222,957 ) 1,786,162 (6,356,326 ) 4,015,171 Reconciling Items Other Income (Expense), Net 8,607 (21,338 ) 7,996 (16,726 ) Interest Expense, Net 60,571 49,704 174,400 151,723 Income (Loss) Before Income Taxes $ (6,274,921 ) $ 1,715,120 $ (6,522,730 ) $ 3,846,722 (1) Other International primarily includes EOG's Canada, United Kingdom, China and Argentina operations. Total assets by reportable segment are presented below at September 30, 2015 and December 31, 2014 (in thousands): At September 30, 2015 At December 31, 2014 Total Assets United States $ 25,550,746 $ 32,871,398 Trinidad 879,643 865,674 Other International (1) 846,858 1,025,615 Total $ 27,277,247 $ 34,762,687 (1) Other International primarily includes EOG's Canada, United Kingdom, China and Argentina operations.

Asset Retirement Obligations

Asset Retirement Obligations	9 Months Ended
	Sep. 30, 2015
Asset Retirement Obligation [Abstract]
Asset Retirement Obligations [Text Block]	Asset Retirement Obligations The following table presents the reconciliation of the beginning and ending aggregate carrying amounts of short-term and long-term legal obligations associated with the retirement of property, plant and equipment for the nine -month periods ended September 30, 2015 and 2014 (in thousands): Nine Months Ended 2015 2014 Carrying Amount at Beginning of Period $ 752,718 $ 761,898 Liabilities Incurred 38,095 91,822 Liabilities Settled (1) (12,929 ) (44,805 ) Accretion 23,810 33,833 Revisions (13,576 ) 68,785 Foreign Currency Translations (4,361 ) (4,178 ) Carrying Amount at End of Period $ 783,757 $ 907,355 Current Portion $ 11,592 $ 12,528 Noncurrent Portion $ 772,165 $ 894,827 (1) Includes settlements related to asset sales. The current and noncurrent portions of EOG's asset retirement obligations are included in Current Liabilities - Other and Other Liabilities, respectively, on the Consolidated Balance Sheets.

Exploratory Well Costs

Exploratory Well Costs	9 Months Ended
	Sep. 30, 2015
Capitalized Exploratory Well Costs [Abstract]
Exploratory Well Costs [Text Block]	Exploratory Well Costs EOG's net changes in capitalized exploratory well costs for the nine -month period ended September 30, 2015 , are presented below (in thousands): Nine Months Ended Balance at January 1 $ 17,253 Additions Pending the Determination of Proved Reserves 23,936 Reclassifications to Proved Properties (26,499 ) Costs Charged to Expense (6,178 ) (1) Balance at September 30 $ 8,512 (1) Includes capitalized exploratory well costs charged to dry hole costs. At September 30, 2015 , all capitalized exploratory well costs had been capitalized for periods of less than one year.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies [Text Block]	Commitments and Contingencies There are currently various suits and claims pending against EOG that have arisen in the ordinary course of EOG's business, including contract disputes, personal injury and property damage claims and title disputes. While the ultimate outcome and impact on EOG cannot be predicted, management believes that the resolution of these suits and claims will not, individually or in the aggregate, have a material adverse effect on EOG's consolidated financial position, results of operations or cash flow. EOG records reserves for contingencies when information available indicates that a loss is probable and the amount of the loss can be reasonably estimated.

Pension and Postretirement Bene

Pension and Postretirement Benefits	9 Months Ended
	Sep. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Pension and Postretirement Benefits [Text Block]	Pension and Postretirement Benefits EOG has defined contribution pension plans in place for most of its employees in the United States, Trinidad and the United Kingdom, and defined benefit pension plans covering certain of its employees in Trinidad. For the nine months ended September 30, 2015 and 2014 , EOG's total costs recognized for these pension plans were $27.0 million and $29.6 million , respectively. In connection with the divestiture of substantially all of its Canadian assets in the fourth quarter of 2014, EOG has elected to terminate the Canadian non-contributory defined benefit pension plan. EOG also has postretirement medical and dental plans in place for eligible employees in the United States and Trinidad, the costs of which are not material.

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2015
Debt Disclosure [Abstract]
Long-Term Debt [Text Block]	Long-Term Debt During the nine months ended September 30, 2015 and 2014 , EOG utilized commercial paper and short-term borrowings under uncommitted credit facilities, bearing market interest rates, for various corporate financing purposes. At September 30, 2015 and 2014 , EOG had $30 million and zero , respectively, of outstanding short-term borrowings from commercial paper and no outstanding borrowings from uncommitted credit facilities. The average borrowings outstanding under the commercial paper program were $7 million and $16 million during the nine months ended September 30, 2015 and 2014 , respectively. The average borrowings outstanding under the uncommitted credit facilities were zero and $0.1 million during the nine months ended September 30, 2015 and 2014 , respectively. The weighted average interest rates for commercial paper borrowings during the nine months ended September 30, 2015 and 2014 were 0.45% and 0.25% , respectively, and 0.70% for uncommitted credit facility borrowings during the nine months ended September 30, 2014 . At September 30, 2015 , the $400 million aggregate principal amount of 2.500% Senior Notes due 2016 were classified as long-term debt based upon EOG's intent and ability to ultimately replace such amount with other long-term debt. On June 1, 2015 , EOG repaid upon maturity the $500 million aggregate principal amount of its 2.95% Senior Notes due 2015. On March 17, 2015, EOG closed its sale of the $500 million aggregate principal amount of its 3.15% Senior Notes due 2025 and the $500 million aggregate principal amount of its 3.90% Senior Notes due 2035 (together, the Notes). Interest on the Notes is payable semi-annually in arrears on April 1 and October 1 of each year, beginning on October 1, 2015. Net proceeds from the Notes offering of approximately $990 million were used for general corporate purposes. On July 21, 2015, EOG entered into a new $2.0 billion senior unsecured Revolving Credit Agreement (2015 Agreement) with domestic and foreign lenders. The 2015 Agreement replaces EOG's $2.0 billion senior unsecured Revolving Credit Agreement, dated as of October 11, 2011, which had a scheduled maturity date of October 11, 2016 (2011 Agreement). There were no borrowings or letters of credit outstanding under the 2011 Agreement as of the closing of the 2015 Agreement and the termination of the 2011 Agreement. The 2015 Agreement has a scheduled maturity date of July 21, 2020 , and includes an option for EOG to extend, on up to two occasions, the term for successive one-year periods subject to certain terms and conditions. Advances under the 2015 Agreement will accrue interest based, at EOG's option, on either the London InterBank Offered Rate plus an applicable margin (Eurodollar rate) or the base rate (as defined in the 2015 Agreement) plus an applicable margin. Consistent with the terms of the 2011 Agreement, the 2015 Agreement contains representations, warranties, covenants and events of default that are customary for investment-grade, senior unsecured commercial bank credit agreements, including a financial covenant for the maintenance of a debt-to-total capitalization ratio of no greater than 65% . At September 30, 2015 , there were no borrowings or letters of credit outstanding under the 2015 Agreement. The Eurodollar rate and applicable base rate, had there been any amounts borrowed under the 2015 Agreement, would have been 1.09% and 3.25% , respectively.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements [Text Block]	Fair Value Measurements As more fully discussed in Note 13 to the Consolidated Financial Statements included in EOG's 2014 Annual Report, certain of EOG's financial and nonfinancial assets and liabilities are reported at fair value on the Consolidated Balance Sheets. The following table provides fair value measurement information within the fair value hierarchy for certain of EOG's financial assets and liabilities carried at fair value on a recurring basis at September 30, 2015 and December 31, 2014 (in millions): Fair Value Measurements Using: Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total At September 30, 2015 Financial Assets Natural Gas Options/Swaptions $ — $ 31 $ — $ 31 Crude Oil Swaps/Put Options — 40 — 40 At December 31, 2014 Financial Assets Natural Gas Options/Swaptions $ — $ 100 $ — $ 100 Crude Oil Swaps — 121 — 121 Crude Oil Options/Swaptions — 244 — 244 The estimated fair value of crude oil and natural gas derivative contracts (including options/swaptions) was based upon forward commodity price curves based on quoted market prices. Commodity derivative contracts were valued by utilizing an independent third-party derivative valuation provider who uses various types of valuation models, as applicable. The initial measurement of asset retirement obligations at fair value is calculated using discounted cash flow techniques and based on internal estimates of future retirement costs associated with property, plant and equipment. Significant Level 3 inputs used in the calculation of asset retirement obligations include plugging costs and reserve lives. A reconciliation of EOG's asset retirement obligations is presented in Note 6. Due to the decline in commodity prices, proved oil and gas properties, other property, plant and equipment and other assets with a carrying amount of $8,857 million were written down to their fair value of $2,627 million , resulting in pretax impairment charges of $6,230 million , $4,061 million net of tax, for the nine months ended September 30, 2015 . Impairments included domestic legacy natural gas assets and marginal liquids plays and the Conwy crude oil project in the East Irish Sea. Significant Level 3 inputs associated with the calculation of discounted cash flows used in the impairment analysis include EOG's estimate of future crude oil and natural gas prices, production costs, development expenditures, anticipated production of proved reserves, appropriate risk-adjusted discount rates and other relevant data. Fair Value of Debt. At September 30, 2015 and December 31, 2014 , EOG had outstanding $6,390 million and $5,890 million , respectively, aggregate principal amount of senior notes, which had estimated fair values of approximately $6,673 million and $6,242 million , respectively. The estimated fair value of the senior notes was based upon quoted market prices and, where such prices were not available, other observable (Level 2) inputs regarding interest rates available to EOG at the end of each respective period.

Risk Management Activities

Risk Management Activities	9 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Risk Management Activities [Text Block]	Risk Management Activities Commodity Price Risk . As more fully discussed in Note 12 to the Consolidated Financial Statements included in EOG's 2014 Annual Report, EOG engages in price risk management activities from time to time. These activities are intended to manage EOG's exposure to fluctuations in commodity prices for crude oil and natural gas. EOG utilizes financial commodity derivative instruments, primarily price swap, option, swaption, collar and basis swap contracts, as a means to manage this price risk. EOG has not designated any of its financial commodity derivative contracts as accounting hedges and, accordingly, accounts for financial commodity derivative contracts using the mark-to-market accounting method. Commodity Derivative Contracts. Presented below is a comprehensive summary of EOG's crude oil price swap contracts at September 30, 2015 , with notional volumes expressed in barrels per day (Bbld) and prices expressed in dollars per barrel ($/Bbl). Crude Oil Price Swap Contracts Volume (Bbld) Weighted Average Price ($/Bbl) 2015 January 1, 2015 through June 30, 2015 (closed) 47,000 $ 91.22 July 1, 2015 through September 30, 2015 (closed) 10,000 89.98 October 1, 2015 through December 31, 2015 10,000 89.98 EOG has purchased put options which establish a floor price for the sale of certain notional volumes of crude oil as specified in the put option contracts. The put options grant EOG the right to receive the difference between the put option strike price and the average NYMEX West Texas Intermediate crude oil price for the contract month (Index Price), in the event the Index Price is below the put option strike price. If the Index Price is above the put option strike price, EOG is only required to pay the put option premium. Below is a summary of EOG's put option contracts at September 30, 2015 , with notional volumes expressed in Bbld and prices and premiums expressed in $/Bbl. Crude Oil Put Option Contracts Volume (Bbld) Average Premium ($/Bbl) Strike Price ($/Bbl) 2015 September 2015 (closed) 82,500 $ 1.75 $ 45.00 October 1, 2015 through November 30, 2015 82,500 1.75 45.00 Presented below is a comprehensive summary of EOG's natural gas price swap contracts at September 30, 2015 , with notional volumes expressed in million British thermal units (MMBtu) per day (MMBtud) and prices expressed in dollars per MMBtu ($/MMBtu). Natural Gas Price Swap Contracts Volume (MMBtud) Weighted Average Price ($/MMBtu) 2015 (1) January 1, 2015 through February 28, 2015 (closed) 235,000 $ 4.47 March 2015 (closed) 225,000 4.48 April 2015 (closed) 195,000 4.49 May 2015 (closed) 235,000 4.13 June 1, 2015 through July 31, 2015 (closed) 275,000 3.98 August 1, 2015 through October 31, 2015 (closed) 175,000 4.51 November 1, 2015 through December 31, 2015 175,000 4.51 (1) EOG has entered into natural gas price swap contracts which give counterparties the option of entering into price swap 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 price swap contracts will increase by 175,000 MMBtud at an average price of $4.51 per MMBtu for each month during the period November 1, 2015 through December 31, 2015. The following table sets forth the amounts and classification of EOG's outstanding derivative financial instruments at September 30, 2015 and December 31, 2014 . Certain amounts may be presented on a net basis on the consolidated financial statements when such amounts are with the same counterparty and subject to a master netting arrangement (in millions): Fair Value at Description Location on Balance Sheet September 30, December 31, Asset Derivatives Crude oil and natural gas derivative contracts - Current portion Assets from Price Risk Management Activities (1) $ 71 $ 465 Liability Derivatives Crude oil and natural gas derivative contracts - Current portion Liabilities from Price Risk Management Activities (2) $ — $ — (1) The current portion of Assets from Price Risk Management Activities consists of gross assets of $80 million , partially offset by gross liabilities of $9 million at September 30, 2015 , and gross assets of $477 million , partially offset by gross liabilities of $12 million at December 31, 2014 . (2) The current portion of Liabilities from Price Risk Management Activities consists of gross liabilities of $9 million , offset by gross assets of $9 million at September 30, 2015 , and gross liabilities of $12 million , offset by gross assets of $12 million at December 31, 2014 . Credit Risk. Notional contract amounts are used to express the magnitude of commodity price swap agreements. The amounts potentially subject to credit risk, in the event of nonperformance by the counterparties, are equal to the fair value of such contracts (see Note 11). EOG evaluates its exposure to significant counterparties on an ongoing basis, including those arising from physical and financial transactions. In some instances, EOG renegotiates payment terms and/or requires collateral, parent guarantees or letters of credit to minimize credit risk. All of EOG's outstanding derivative instruments are covered by International Swap Dealers Association Master Agreements (ISDAs) with counterparties. The ISDAs may contain provisions that require EOG, if it is the party in a net liability position, to post collateral when the amount of the net liability exceeds the threshold level specified for EOG's then-current credit ratings. In addition, the ISDAs may also provide that as a result of certain circumstances, including certain events that cause EOG's credit ratings to become materially weaker than its then-current ratings, the counterparty may require all outstanding derivatives under the ISDAs to be settled immediately. See Note 11 for the aggregate fair value of all derivative instruments that were in a net asset position at September 30, 2015 and December 31, 2014 . EOG held collateral of $30 million and $278 million at September 30, 2015 and December 31, 2014 , respectively, and had no collateral posted at September 30, 2015 or December 31, 2014 .

Acquisitions and Divestitures

Acquisitions and Divestitures	9 Months Ended
	Sep. 30, 2015
Discontinued Operations and Disposal Groups [Abstract]
Acquisitions and Divestitures [Text Block]	Acquisitions and Divestitures During the third quarter of 2015, EOG completed three transactions to acquire certain proved crude oil properties and related assets in the Delaware Basin. The aggregate purchase price of the transactions totaled approximately $368 million . During the first nine months of 2015 , EOG received proceeds of approximately $144 million primarily from sales of gathering and processing assets. During the first nine months of 2014 , EOG received proceeds of approximately $91 million from sales of producing properties and acreage primarily in the Mid-Continent area, the Upper Gulf Coast region, Canada and the Rocky Mountain area. During the fourth quarter of 2014, EOG received proceeds of approximately $400 million from the divestiture of all its assets in Manitoba and the majority of its assets in Alberta (collectively, the Canadian Sales). The Canadian Sales that closed on or about December 1, 2014, occurred in two separate transactions, an asset sale and the sale of the stock of certain of EOG's Canadian subsidiaries. As these two transactions represented a substantially complete liquidation of EOG's Canadian operations, approximately $383 million of cumulative translation adjustments previously recorded on the Consolidated Balance Sheets was reclassified to the Consolidated Statements of Income (Loss) and Comprehensive Income (Loss). The Canadian Sales also resulted in the release of approximately $150 million of restricted cash related to future abandonment liabilities.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	Stock-based compensation expense is included on the Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) based upon the job function of the employees receiving the grants as follows (in millions): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Lease and Well $ 10.3 $ 9.7 $ 32.9 $ 30.4 Gathering and Processing Costs 0.4 0.4 1.0 0.9 Exploration Costs 6.0 6.7 19.3 20.2 General and Administrative 23.6 21.7 48.8 52.1 Total $ 40.3 $ 38.5 $ 102.0 $ 103.6
Weighted Average Fair Values and Valuation Assumptions	Weighted average fair values and valuation assumptions used to value stock option, SAR and ESPP grants during the nine -month periods ended September 30, 2015 and 2014 are as follows: Stock Options/SARs ESPP Nine Months Ended Nine Months Ended 2015 2014 2015 2014 Weighted Average Fair Value of Grants $ 21.87 $ 30.77 $ 21.40 $ 21.27 Expected Volatility 38.04 % 35.25 % 32.54 % 25.12 % Risk-Free Interest Rate 0.83 % 0.95 % 0.12 % 0.08 % Dividend Yield 0.85 % 0.60 % 0.72 % 0.50 % Expected Life 5.3 years 5.2 years 0.5 years 0.5 years
Stock Options and SARs Transactions	The following table sets forth stock option and SAR transactions for the nine -month periods ended September 30, 2015 and 2014 (stock options and SARs in thousands): Nine Months Ended Nine Months Ended Number of Stock Options/SARs Weighted Average Grant Price Number of Stock Options/SARs Weighted Average Grant Price Outstanding at January 1 10,493 $ 64.96 10,452 $ 54.43 Granted 2,029 69.95 2,122 101.65 Exercised (1) (1,291 ) 47.25 (1,351 ) 44.52 Forfeited (203 ) 80.12 (226 ) 62.95 Outstanding at September 30 (2) 11,028 $ 67.67 10,997 $ 64.58 Vested or Expected to Vest (3) 10,653 $ 67.22 10,568 $ 63.92 Exercisable at September 30 (4) 6,121 $ 57.34 5,573 $ 49.23 (1) The total intrinsic value of stock options/SARs exercised for the nine months ended September 30, 2015 and 2014 was $ 52.4 million and $ 78.0 million , respectively. The intrinsic value is based upon the difference between the market price of EOG's common stock on the date of exercise and the grant price of the stock options/SARs. (2) The total intrinsic value of stock options/SARs outstanding at September 30, 2015 and 2014 was $ 136.9 million and $ 384.9 million , respectively. At September 30, 2015 and 2014 , the weighted average remaining contractual life was 4.4 years and 4.6 years, respectively. (3) The total intrinsic value of stock options/SARs vested or expected to vest at September 30, 2015 and 2014 was $ 135.7 million and $376.6 million , respectively. At September 30, 2015 and 2014 , the weighted average remaining contractual life was 4.3 years and 4.5 years, respectively. (4) The total intrinsic value of stock options/SARs exercisable at September 30, 2015 and 2014 was $ 121.6 million and $277.5 million , respectively. At September 30, 2015 and 2014 , the weighted average remaining contractual life was 3.1 years and 3.3 years, respectively.
Restricted Stock and Restricted Stock Unit Transactions	The following table sets forth restricted stock and restricted stock unit transactions for the nine -month periods ended September 30, 2015 and 2014 (shares and units in thousands): Nine Months Ended Nine Months Ended Number of Shares and Units Weighted Average Grant Date Fair Value Number of Shares and Units Weighted Average Grant Date Fair Value Outstanding at January 1 5,394 $ 64.39 7,358 $ 49.54 Granted 1,036 77.90 1,024 99.00 Released (1) (1,250 ) 51.02 (2,540 ) 37.92 Forfeited (152 ) 74.83 (220 ) 59.36 Outstanding at September 30 (2) 5,028 $ 70.18 5,622 $ 63.41 (1) The total intrinsic value of restricted stock and restricted stock units released for the nine months ended September 30, 2015 and 2014 was $102.5 million and $270.0 million , respectively. The intrinsic value is based upon the closing price of EOG's common stock on the date the restricted stock and restricted stock units are released. (2) The total intrinsic value of restricted stock and restricted stock units outstanding at September 30, 2015 and 2014 was $366.0 million and $556.7 million , respectively.
Weighted Average Fair Values and Valuation Assumptions for Performance Units/Stocks	Weighted average fair values and valuation assumptions used to value performance unit and performance stock grants during the nine-month periods ended September 30, 2015 and 2014 are as follows: Nine Months Ended 2015 2014 Weighted Average Fair Value of Grants $ 80.64 $ 119.27 Expected Volatility 29.35 % 32.18 % Risk-Free Interest Rate 1.07 % 1.18 %
Performance Units and Performance Stock Transactions	The following table sets forth performance unit and performance stock transactions for the nine -month periods ended September 30, 2015 and 2014 (shares and units in thousands): Nine Months Ended Nine Months Ended Number of Shares and Units Weighted Average Grant Date Fair Value Number of Shares and Units Weighted Average Grant Date Fair Value Outstanding at January 1 333 $ 90.17 261 $ 82.18 Granted 72 80.64 72 119.27 Released — — — — Forfeited — — — — Outstanding at September 30 (1) 405 $ 88.48 333 $ 90.17 (1) The total intrinsic value of performance units and performance stock outstanding at September 30, 2015 and 2014 was $ 29.5 million and $33.0 million , respectively.

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	9 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
Computation of Net Income Per Share	The following table sets forth the computation of Net Income (Loss) Per Share for the three-month and nine -month periods ended September 30, 2015 and 2014 (in thousands, except per share data): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Numerator for Basic and Diluted Earnings Per Share - Net Income (Loss) $ (4,075,739 ) $ 1,103,618 $ (4,240,219 ) $ 2,470,899 Denominator for Basic Earnings Per Share - Weighted Average Shares 545,920 543,984 545,466 543,086 Potential Dilutive Common Shares - Stock Options/SARs — 2,760 — 2,644 Restricted Stock/Units and Performance Units/Stock — 2,774 — 2,671 Denominator for Diluted Earnings Per Share - Adjusted Diluted Weighted Average Shares 545,920 549,518 545,466 548,401 Net Income (Loss) Per Share Basic $ (7.47 ) $ 2.03 $ (7.77 ) $ 4.55 Diluted $ (7.47 ) $ 2.01 $ (7.77 ) $ 4.51

Supplemental Cash Flow Inform21

Supplemental Cash Flow Information (Tables)	9 Months Ended
	Sep. 30, 2015
Supplemental Cash Flow Information [Abstract]
Net Cash Paid For Interest and Income Taxes	Net cash paid for interest and income taxes was as follows for the nine -month periods ended September 30, 2015 and 2014 (in thousands): Nine Months Ended 2015 2014 Interest (1) $ 152,590 $ 143,615 Income Taxes, Net of Refunds Received $ 69,281 $ 330,476 (1) Net of capitalized interest of $33 million and $43 million for the nine months ended September 30, 2015 and 2014 , respectively.

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2015
Segment Reporting [Abstract]
Selected Financial Information by Reportable Segment	Selected financial information by reportable segment is presented below for the three -month and nine -month periods ended September 30, 2015 and 2014 (in thousands): Three Months Ended Nine Months Ended 2015 2014 2015 2014 Net Operating Revenues United States $ 2,040,881 $ 4,924,226 $ 6,622,781 $ 12,748,128 Trinidad 98,493 123,154 290,758 398,140 Other International (1) 33,054 71,236 47,128 243,575 Total $ 2,172,428 $ 5,118,616 $ 6,960,667 $ 13,389,843 Operating Income (Loss) United States $ (6,110,284 ) $ 1,767,044 $ (6,271,908 ) $ 3,900,263 Trinidad 46,230 61,328 139,116 209,785 Other International (1) (158,903 ) (42,210 ) (223,534 ) (94,877 ) Total (6,222,957 ) 1,786,162 (6,356,326 ) 4,015,171 Reconciling Items Other Income (Expense), Net 8,607 (21,338 ) 7,996 (16,726 ) Interest Expense, Net 60,571 49,704 174,400 151,723 Income (Loss) Before Income Taxes $ (6,274,921 ) $ 1,715,120 $ (6,522,730 ) $ 3,846,722 (1) Other International primarily includes EOG's Canada, United Kingdom, China and Argentina operations.
Assets by Reportable Segment	Total assets by reportable segment are presented below at September 30, 2015 and December 31, 2014 (in thousands): At September 30, 2015 At December 31, 2014 Total Assets United States $ 25,550,746 $ 32,871,398 Trinidad 879,643 865,674 Other International (1) 846,858 1,025,615 Total $ 27,277,247 $ 34,762,687 (1) Other International primarily includes EOG's Canada, United Kingdom, China and Argentina operations.

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	9 Months Ended
	Sep. 30, 2015
Asset Retirement Obligation [Abstract]
Asset Retirement Obligation Rollforward Analysis	The following table presents the reconciliation of the beginning and ending aggregate carrying amounts of short-term and long-term legal obligations associated with the retirement of property, plant and equipment for the nine -month periods ended September 30, 2015 and 2014 (in thousands): Nine Months Ended 2015 2014 Carrying Amount at Beginning of Period $ 752,718 $ 761,898 Liabilities Incurred 38,095 91,822 Liabilities Settled (1) (12,929 ) (44,805 ) Accretion 23,810 33,833 Revisions (13,576 ) 68,785 Foreign Currency Translations (4,361 ) (4,178 ) Carrying Amount at End of Period $ 783,757 $ 907,355 Current Portion $ 11,592 $ 12,528 Noncurrent Portion $ 772,165 $ 894,827 (1) Includes settlements related to asset sales.

Exploratory Well Costs (Tables)

Exploratory Well Costs (Tables)	9 Months Ended
	Sep. 30, 2015
Capitalized Exploratory Well Costs [Abstract]
Net Changes In Capitalized Exploratory Well Costs	EOG's net changes in capitalized exploratory well costs for the nine -month period ended September 30, 2015 , are presented below (in thousands): Nine Months Ended Balance at January 1 $ 17,253 Additions Pending the Determination of Proved Reserves 23,936 Reclassifications to Proved Properties (26,499 ) Costs Charged to Expense (6,178 ) (1) Balance at September 30 $ 8,512 (1) Includes capitalized exploratory well costs charged to dry hole costs.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Assets and Liabilities Measured On Recurring Basis	The following table provides fair value measurement information within the fair value hierarchy for certain of EOG's financial assets and liabilities carried at fair value on a recurring basis at September 30, 2015 and December 31, 2014 (in millions): Fair Value Measurements Using: Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total At September 30, 2015 Financial Assets Natural Gas Options/Swaptions $ — $ 31 $ — $ 31 Crude Oil Swaps/Put Options — 40 — 40 At December 31, 2014 Financial Assets Natural Gas Options/Swaptions $ — $ 100 $ — $ 100 Crude Oil Swaps — 121 — 121 Crude Oil Options/Swaptions — 244 — 244

Risk Management Activities (Tab

Risk Management Activities (Tables)	9 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Commodity Derivative Contracts - Crude Oil	Presented below is a comprehensive summary of EOG's crude oil price swap contracts at September 30, 2015 , with notional volumes expressed in barrels per day (Bbld) and prices expressed in dollars per barrel ($/Bbl). Crude Oil Price Swap Contracts Volume (Bbld) Weighted Average Price ($/Bbl) 2015 January 1, 2015 through June 30, 2015 (closed) 47,000 $ 91.22 July 1, 2015 through September 30, 2015 (closed) 10,000 89.98 October 1, 2015 through December 31, 2015 10,000 89.98
Commodity Derivative Contracts - Crude Oil - Put Options	Below is a summary of EOG's put option contracts at September 30, 2015 , with notional volumes expressed in Bbld and prices and premiums expressed in $/Bbl. Crude Oil Put Option Contracts Volume (Bbld) Average Premium ($/Bbl) Strike Price ($/Bbl) 2015 September 2015 (closed) 82,500 $ 1.75 $ 45.00 October 1, 2015 through November 30, 2015 82,500 1.75 45.00
Commodity Derivative Contracts - Natural Gas	Presented below is a comprehensive summary of EOG's natural gas price swap contracts at September 30, 2015 , with notional volumes expressed in million British thermal units (MMBtu) per day (MMBtud) and prices expressed in dollars per MMBtu ($/MMBtu). Natural Gas Price Swap Contracts Volume (MMBtud) Weighted Average Price ($/MMBtu) 2015 (1) January 1, 2015 through February 28, 2015 (closed) 235,000 $ 4.47 March 2015 (closed) 225,000 4.48 April 2015 (closed) 195,000 4.49 May 2015 (closed) 235,000 4.13 June 1, 2015 through July 31, 2015 (closed) 275,000 3.98 August 1, 2015 through October 31, 2015 (closed) 175,000 4.51 November 1, 2015 through December 31, 2015 175,000 4.51 (1) EOG has entered into natural gas price swap contracts which give counterparties the option of entering into price swap 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 price swap contracts will increase by 175,000 MMBtud at an average price of $4.51 per MMBtu for each month during the period November 1, 2015 through December 31, 2015.
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The following table sets forth the amounts and classification of EOG's outstanding derivative financial instruments at September 30, 2015 and December 31, 2014 . Certain amounts may be presented on a net basis on the consolidated financial statements when such amounts are with the same counterparty and subject to a master netting arrangement (in millions): Fair Value at Description Location on Balance Sheet September 30, December 31, Asset Derivatives Crude oil and natural gas derivative contracts - Current portion Assets from Price Risk Management Activities (1) $ 71 $ 465 Liability Derivatives Crude oil and natural gas derivative contracts - Current portion Liabilities from Price Risk Management Activities (2) $ — $ — (1) The current portion of Assets from Price Risk Management Activities consists of gross assets of $80 million , partially offset by gross liabilities of $9 million at September 30, 2015 , and gross assets of $477 million , partially offset by gross liabilities of $12 million at December 31, 2014 . (2) The current portion of Liabilities from Price Risk Management Activities consists of gross liabilities of $9 million , offset by gross assets of $9 million at September 30, 2015 , and gross liabilities of $12 million , offset by gross assets of $12 million at December 31, 2014 .

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Stock based compensation by job function [Line Items]
Common Shares Available for Grant		24,600		24,600
Compensation expense related to the company's stock-based compensation plans		$ 40.3	$ 38.5	$ 102	$ 103.6
Stock Options/SARs and Employee Stock Purchase Plan (ESPP) Disclosures [Line Items]
Stock-based compensation expense related to stock options, SAR and ESPP grants		20	21.2	43.3	44.9
Lease And Well [Member]
Stock based compensation by job function [Line Items]
Compensation expense related to the company's stock-based compensation plans		10.3	9.7	32.9	30.4
Gathering And Processing Costs [Member]
Stock based compensation by job function [Line Items]
Compensation expense related to the company's stock-based compensation plans		0.4	0.4	1	0.9
Exploration Costs [Member]
Stock based compensation by job function [Line Items]
Compensation expense related to the company's stock-based compensation plans		6	6.7	19.3	20.2
General And Administrative [Member]
Stock based compensation by job function [Line Items]
Compensation expense related to the company's stock-based compensation plans		$ 23.6	$ 21.7	$ 48.8	$ 52.1
Stock Options and SARs [Member]
Weighted Average Fair Values And Valuation Assumptions Used To Value Stock Option/SARs, ESPP, and Performance Units/Stock Stock-Based Compensation [Abstract]
Weighted Average Fair Value of Grants (price per share)				$ 21.87	$ 30.77
Expected Volatility (in hundredths)				38.04%	35.25%
Risk-Free Interest Rate (in hundredths)				0.83%	0.95%
Dividend Yield (in hundredths)				0.85%	0.60%
Expected Life (in years)				5 years 3 months 18 days	5 years 2 months 12 days
Stock Options and SARs Rollforward [Abstract]
Outstanding at January 1 (in shares)				10,493	10,452
Granted (in shares)				2,029	2,122
Exercised (1) (in shares)	[1]			(1,291)	(1,351)
Forfeited (in shares)				(203)	(226)
Outstanding at September 30 (2) (in shares)	[2]	11,028	10,997	11,028	10,997
Share-Based Compensation Arrangement By Share Based Payment Award Stock Option/SARs, ESPP, Restricted Stock/Units and Performance Units/Stock [Abstract]
Outstanding at January 1 (price per share)				$ 64.96	$ 54.43
Granted (price per share)				69.95	101.65
Exercised (1) (price per share)	[1]			47.25	44.52
Forfeited (price per share)				80.12	62.95
Outstanding at September 30 (2) (price per share)	[2]	$ 67.67	$ 64.58	$ 67.67	$ 64.58
Stock Options and SARs Vested or Expected to Vest (in shares)	[3]	10,653	10,568	10,653	10,568
Weighted average grant price for stock options/SARs vested or expected to vest (price per share)	[3]	$ 67.22	$ 63.92	$ 67.22	$ 63.92
Stock Options and SARs Exercisable at September 30 (in shares)	[4]	6,121	5,573	6,121	5,573
Stock Options and SARs Exercisable at September 30 (price per share)	[4]	$ 57.34	$ 49.23	$ 57.34	$ 49.23
Intrinsic value of stock options/SARs exercised during the period	[1]			$ 52.4	$ 78
Aggregate intrinsic value for outstanding stock options and SARs	[2]	$ 136.9	$ 384.9	$ 136.9	$ 384.9
Weighted average remaining contractual life for stock options/SARs outstanding (in years)				4 years 4 months 24 days	4 years 7 months 6 days
Aggregate intrinsic value of stock options/SARs vested or expected to vest	[3]	135.7	376.6	$ 135.7	$ 376.6
Weighted average remaining contractual life for stock options/SARs vested or expected to vest (in years)				4 years 3 months 18 days	4 years 6 months
Aggregate intrinsic value for exercisable units	[4]	121.6	277.5	$ 121.6	$ 277.5
Weighted average remaining contractual life for exercisable options/SARs (in years)				3 years 1 month 6 days	3 years 3 months 18 days
Unrecognized compensation expense		112.2		$ 112.2
Weighted average period over which unrecognized compensation expense will be recognized (in years)				3 years
ESPP [Member]
Weighted Average Fair Values And Valuation Assumptions Used To Value Stock Option/SARs, ESPP, and Performance Units/Stock Stock-Based Compensation [Abstract]
Weighted Average Fair Value of Grants (price per share)				$ 21.40	$ 21.27
Expected Volatility (in hundredths)				32.54%	25.12%
Risk-Free Interest Rate (in hundredths)				0.12%	0.08%
Dividend Yield (in hundredths)				0.72%	0.50%
Expected Life (in years)				6 months	6 months
Restricted Stock and Restricted Stock Units [Member]
Share-Based Compensation Arrangement By Share Based Payment Award Stock Option/SARs, ESPP, Restricted Stock/Units and Performance Units/Stock [Abstract]
Unrecognized compensation expense		194.5		$ 194.5
Weighted average period over which unrecognized compensation expense will be recognized (in years)				2 years 8 months 12 days
Share-Based Compensation Arrangement By Restricted Stock And Restricted Stock Units Compensation Cost		$ 16.2	$ 13.9	$ 53.9	$ 53.4
Restricted Stock/Restricted Stock Units and Performance Units/Performance Stock [Roll Forward]
Outstanding at January 1 (in shares)				5,394	7,358
Granted (in shares)				1,036	1,024
Released (in shares)	[5]			(1,250)	(2,540)
Forfeited (in shares)				(152)	(220)
Outstanding at September 30 (1) (in shares)	[6]	5,028	5,622	5,028	5,622
Weighted Average Grant Price Restricted Stock and Restricted Stock Units/Performance Units and Performance Stock [Roll Forward]
Outstanding at January 1 (price per share)				$ 64.39	$ 49.54
Granted (price per share)				77.90	99
Released (price per share)	[5]			51.02	37.92
Forfeited (price per share)				74.83	59.36
Outstanding at September 30 (1) (price per share)	[6]	$ 70.18	$ 63.41	$ 70.18	$ 63.41
Intrinsic value of restricted stock and restricted stock units released during the year	[5]			$ 102.5	$ 270
Aggregate intrinsic value of stock and units outstanding	[6]	$ 366	$ 556.7	$ 366	$ 556.7
Performance Units and Performance Stock [Member]
Weighted Average Fair Values And Valuation Assumptions Used To Value Stock Option/SARs, ESPP, and Performance Units/Stock Stock-Based Compensation [Abstract]
Weighted Average Fair Value of Grants (price per share)				$ 80.64	$ 119.27
Expected Volatility (in hundredths)				29.35%	32.18%
Risk-Free Interest Rate (in hundredths)				1.07%	1.18%
Term Of Zero- Coupon Risk- Free Interest Rate In Years Derived From Treasury Constant Maturities Yield Curve				3 years 3 months 4 days
Share-Based Compensation Arrangement By Share Based Payment Award Stock Option/SARs, ESPP, Restricted Stock/Units and Performance Units/Stock [Abstract]
Unrecognized compensation expense		$ 6.4		$ 6.4
Weighted average period over which unrecognized compensation expense will be recognized (in years)				3 years 6 months
Restricted Stock/Restricted Stock Units and Performance Units/Performance Stock [Roll Forward]
Outstanding at January 1 (in shares)				333	261
Granted (in shares)				72	72
Released (in shares)				0	0
Forfeited (in shares)				0	0
Outstanding at September 30 (1) (in shares)	[7]	405	333	405	333
Weighted Average Grant Price Restricted Stock and Restricted Stock Units/Performance Units and Performance Stock [Roll Forward]
Outstanding at January 1 (price per share)				$ 90.17	$ 82.18
Granted (price per share)				80.64	119.27
Released (price per share)				0	0
Forfeited (price per share)				0	0
Outstanding at September 30 (1) (price per share)	[7]	$ 88.48	$ 90.17	$ 88.48	$ 90.17
Aggregate intrinsic value of stock and units outstanding	[7]	$ 29.5	$ 33	$ 29.5	$ 33
Performance Units and Performance Stock [Abstract]
Share-Based Compensation Arrangement By Performance Units and Performance Stock Compensation Cost		$ 4.1	$ 3.4	$ 4.8	$ 5.3
[1]	The total intrinsic value of stock options/SARs exercised for the nine months ended September 30, 2015 and 2014 was $52.4 million and $78.0 million, respectively. The intrinsic value is based upon the difference between the market price of EOG's common stock on the date of exercise and the grant price of the stock options/SARs.
[2]	The total intrinsic value of stock options/SARs outstanding at September 30, 2015 and 2014 was $136.9 million and $384.9 million, respectively. At September 30, 2015 and 2014, the weighted average remaining contractual life was 4.4 years and 4.6 years, respectively.
[3]	The total intrinsic value of stock options/SARs vested or expected to vest at September 30, 2015 and 2014 was $135.7 million and $376.6 million, respectively. At September 30, 2015 and 2014, the weighted average remaining contractual life was 4.3 years and 4.5 years, respectively.
[4]	The total intrinsic value of stock options/SARs exercisable at September 30, 2015 and 2014 was $121.6 million and $277.5 million, respectively. At September 30, 2015 and 2014, the weighted average remaining contractual life was 3.1 years and 3.3 years, respectively.
[5]	The total intrinsic value of restricted stock and restricted stock units released for the nine months ended September 30, 2015 and 2014 was $102.5 million and $270.0 million, respectively. The intrinsic value is based upon the closing price of EOG's common stock on the date the restricted stock and restricted stock units are released.
[6]	The total intrinsic value of restricted stock and restricted stock units outstanding at September 30, 2015 and 2014 was $366.0 million and $556.7 million, respectively.
[7]	The total intrinsic value of performance units and performance stock outstanding at September 30, 2015 and 2014 was $29.5 million and $33.0 million, respectively.

Net Income (Loss) Per Share (De

Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Numerator for Basic and Diluted Earnings Per Share - [Abstract]
Net Income (Loss)	$ (4,075,739)	$ 1,103,618	$ (4,240,219)	$ 2,470,899
Denominator for Basic Earnings Per Share - [Abstract]
Weighted Average Shares	545,920	543,984	545,466	543,086
Potential Dilutive Common Shares -[Abstract]
Stock Options/SARs	0	2,760	0	2,644
Restricted Stock/Units and Performance Units/Stock	0	2,774	0	2,671
Denominator for Diluted Earnings Per Share - [Abstract]
Adjusted Diluted Weighted Average Shares	545,920	549,518	545,466	548,401
Net Income (Loss) Per Share [Abstract]
Basic	$ (7.47)	$ 2.03	$ (7.77)	$ 4.55
Diluted	$ (7.47)	$ 2.01	$ (7.77)	$ 4.51
Earnings Per Share, Diluted, Other Disclosures [Abstract]
Anti-dilutive Stock Options and SARs excluded from Diluted Earnings Per Share Calculation	9,800	200	10,000	200
Restricted Stock and Restricted Stock Units and Performance Units and Performance Stock Excluded from Calculation	5,400		5,400

Supplemental Cash Flow Inform29

Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014
Supplemental Cash Flow Information [Abstract]
Interest (1)	[1]	$ 152,590	$ 143,615
Income Taxes, Net of Refunds Received		69,281	330,476
Interest Costs Capitalized		33,000	43,000
Accrued Capital Expenditures		$ 437,000	$ 960,000
[1]	Net of capitalized interest of $33 million and $43 million for the nine months ended September 30, 2015 and 2014, respectively.

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Schedule of Segment Reporting Information By Segment [Abstract]
Net Operating Revenues		$ 2,172,428	$ 5,118,616	$ 6,960,667	$ 13,389,843
Operating Income (Loss)		(6,222,957)	1,786,162	(6,356,326)	4,015,171
Other Income (Expense), Net		8,607	(21,338)	7,996	(16,726)
Interest Expense, Net		60,571	49,704	174,400	151,723
Income (Loss) Before Income Taxes		(6,274,921)	1,715,120	(6,522,730)	3,846,722
Total Assets		27,277,247		27,277,247		$ 34,762,687
United States [Member]
Schedule of Segment Reporting Information By Segment [Abstract]
Net Operating Revenues		2,040,881	4,924,226	6,622,781	12,748,128
Operating Income (Loss)		(6,110,284)	1,767,044	(6,271,908)	3,900,263
Total Assets		25,550,746		25,550,746		32,871,398
Trinidad [Member]
Schedule of Segment Reporting Information By Segment [Abstract]
Net Operating Revenues		98,493	123,154	290,758	398,140
Operating Income (Loss)		46,230	61,328	139,116	209,785
Total Assets		879,643		879,643		865,674
Other International [Member]
Schedule of Segment Reporting Information By Segment [Abstract]
Net Operating Revenues	[1]	33,054	71,236	47,128	243,575
Operating Income (Loss)	[1]	(158,903)	$ (42,210)	(223,534)	$ (94,877)
Total Assets	[1]	$ 846,858		$ 846,858		$ 1,025,615
[1]	Other International primarily includes EOG's Canada, United Kingdom, China and Argentina operations.

Asset Retirement Obligations (D

Asset Retirement Obligations (Details) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014
Asset Retirement Obligation [Abstract]
Carrying Amount at Beginning of Period		$ 752,718	$ 761,898
Liabilities Incurred		38,095	91,822
Liabilities Settled (1)	[1]	(12,929)	(44,805)
Accretion		23,810	33,833
Revisions		(13,576)	68,785
Foreign Currency Translations		(4,361)	(4,178)
Carrying Amount at End of Period		783,757	907,355
Current Portion		11,592	12,528
Noncurrent Portion		$ 772,165	$ 894,827
[1]	Includes settlements related to asset sales.

Exploratory Well Costs (Details

Exploratory Well Costs (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015USD ($)
CapitalizedExploratoryWellCostsAbstract [Line Items]
Balance at January 1	$ 17,253
Additions Pending the Determination of Proved Reserves	23,936
Reclassifications to Proved Properties	(26,499)
Costs Charged to Expense	(6,178)	[1]
Balance at September 30	$ 8,512
[1]	Includes capitalized exploratory well costs charged to dry hole costs.

Pension and Postretirement Be33

Pension and Postretirement Benefits (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Defined Benefit and Defined Contribution Plan Disclosure [Line Items]
Total pension plan costs	$ 27	$ 29.6

Long-Term Debt (Details)

Long-Term Debt (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Debt Instrument Issuance [Abstract]
Net proceeds from Issuance of Senior Long-Term Debt	$ 990
Revolving Credit Agreement [Member]
Line of Credit Facility [Line Items]
Borrowings Outstanding - End of Period	$ 0
Line of Credit Facility, Expiration Date	Oct. 11, 2016
Letter of Credit Facility Previous Maximum Capacity	$ 2,000
Uncommitted Credit Facility [Member]
Line of Credit Facility [Line Items]
Borrowings Outstanding - End of Period	0	$ 0
Average Outstanding Amount	0	$ 0.1
Weighted average interest rate (in hundredths)		0.70%
Commercial Paper [Member]
Line of Credit Facility [Line Items]
Borrowings Outstanding - End of Period	30	$ 0
Average Outstanding Amount	$ 7	$ 16
Weighted average interest rate (in hundredths)	0.45%	0.25%
New Facility [Member]
Line of Credit Facility [Line Items]
Letters of Credit Outstanding	$ 0
Borrowings Outstanding - End of Period	$ 0
Line of Credit Facility, Expiration Date	Jul. 21, 2020
Letter of Credit Facility Current Maximum Capacity	$ 2,000
Eurodollar rate at period end (in hundredths)	1.09%
Base rate at period end (in hundredths)	3.25%
Maximum total debt to capitalization ratio allowed under financial convenant	65.00%
3.90% Senior Notes due 2035 [Member]
Debt Instrument Issuance [Abstract]
Debt Instrument Issuance Face Amount	$ 500
Debt Instrument Issuance Interest Rate	3.90%
3.15 % Senior Notes due 2025 [Member]
Debt Instrument Issuance [Abstract]
Debt Instrument Issuance Face Amount	$ 500
Debt Instrument Issuance Interest Rate	3.15%
2.500% Senior Notes Due 2016 [Member]
Debt Instrument Issuance [Abstract]
Current debt outstanding reclassified to Long-Term Debt on Consolidated Balance Sheet	$ 400
Debt Instrument Issuance Interest Rate	2.50%
2.95% Senior Notes Due 2015 [Member]
Debt Instrument Issuance [Abstract]
Debt Instrument Issuance Interest Rate	2.95%
Repayment of Debt	$ 500
Debt Instrument, Repayment Date	Jun. 1, 2015

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Financial Assets:
Financial Assets: Natural Gas Options/Swaptions	$ 31	$ 100
Financial Assets: Crude Oil Swaps/Put Options	40	121
Financial Assets: Crude Oil Options/Swaptions		244
Proved Oil and Gas Properties, Other Property, Plant and Equipment and Other Assets [Abstract]
Net of Tax Impairment Charges for Proved Oil and Gas Properties, Other Property, Plant and Equipment and Other Assets	4,061
Pretax Impairment Charges for Proved Oil and Gas Properties, Other Property, Plant and Equipment and Other Assets	6,230
Proved Oil and Gas Properties, Other Property, Plant and Equipment and Other Assets Written Down During the Period - Fair value at End of Period	2,627
Proved Oil and Gas Properties, Other Property, Plant and Equipment and Other Assets Carrying Amount	8,857
Debt Disclosure [Abstract]
Estimated Fair Value of Debt	6,673	6,242
Aggregate Principal Amount of Current and Long-Term Debt	6,390	5,890
Fair Value, Inputs, Level 1 [Member]
Financial Assets:
Financial Assets: Natural Gas Options/Swaptions	0	0
Financial Assets: Crude Oil Swaps/Put Options	0	0
Financial Assets: Crude Oil Options/Swaptions		0
Fair Value, Inputs, Level 2 [Member]
Financial Assets:
Financial Assets: Natural Gas Options/Swaptions	31	100
Financial Assets: Crude Oil Swaps/Put Options	40	121
Financial Assets: Crude Oil Options/Swaptions		244
Fair Value, Inputs, Level 3 [Member]
Financial Assets:
Financial Assets: Natural Gas Options/Swaptions	0	0
Financial Assets: Crude Oil Swaps/Put Options	$ 0	0
Financial Assets: Crude Oil Options/Swaptions		$ 0

Risk Management Activities (Det

Risk Management Activities (Details)		9 Months Ended
		Sep. 30, 2015USD ($)bbl$ / bbl$ / MMBTUMMBTU	Dec. 31, 2014USD ($)
Derivatives, Fair Value [Line Items]
Derivative Assets, Current		$ 71,503,000	$ 465,128,000
Derivative Collateral [Abstract]
Collateral Held on Derivative		30,000,000	278,000,000
Collateral Had on Derivaitve		$ 0	0
Crude Oil Derivative Contracts January - June (closed) [Member]
Derivative [Line Items]
Volume (Bbld) | bbl		47,000
Derivative Weighted Average Price Crude Oil ($/Bbl) | $ / bbl		91.22
Crude Oil Derivative Contracts July - September [Member]
Derivative [Line Items]
Volume (Bbld) | bbl		10,000
Derivative Weighted Average Price Crude Oil ($/Bbl) | $ / bbl		89.98
Crude Oil Derivative Contracts October - December [Member]
Derivative [Line Items]
Volume (Bbld) | bbl		10,000
Derivative Weighted Average Price Crude Oil ($/Bbl) | $ / bbl		89.98
Natural Gas Derivative Contracts January - February (closed) [Member]
Derivative [Line Items]
Volume (MMBtud) | MMBTU		235,000
Derivative Weighted Average Price Natural Gas ($/MMBtu) | $ / MMBTU		4.47
Natural Gas Derivative Contracts March (closed) [Member]
Derivative [Line Items]
Volume (MMBtud) | MMBTU		225,000
Derivative Weighted Average Price Natural Gas ($/MMBtu) | $ / MMBTU		4.48
Natural Gas Derivative Contracts April (closed) [Member]
Derivative [Line Items]
Volume (MMBtud) | MMBTU		195,000
Derivative Weighted Average Price Natural Gas ($/MMBtu) | $ / MMBTU		4.49
Natural Gas Derivative Contracts May (closed) [Member]
Derivative [Line Items]
Volume (MMBtud) | MMBTU		235,000
Derivative Weighted Average Price Natural Gas ($/MMBtu) | $ / MMBTU		4.13
Natural Gas Derivative Contracts June - July (closed) [Member]
Derivative [Line Items]
Volume (MMBtud) | MMBTU		275,000
Derivative Weighted Average Price Natural Gas ($/MMBtu) | $ / MMBTU		3.98
Natural Gas Derivative Contracts November - December [Member]
Derivative [Line Items]
Volumes (MMBtud) - Options Contracts | MMBTU	[1]	175,000
Volume (MMBtud) | MMBTU	[1]	175,000
Derivative Weighted Average Price Natural Gas ($/MMBtu) | $ / MMBTU	[1]	4.51
Average Price ($/MMBtu) - Derivative Options Contracts | $ / MMBTU	[1]	4.51
Natural Gas Derivative Contracts August - October [Member]
Derivative [Line Items]
Volume (MMBtud) | MMBTU		175,000
Derivative Weighted Average Price Natural Gas ($/MMBtu) | $ / MMBTU		4.51
Put Options Derivative Contracts October - November [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount | bbl		82,500
Put Option Premium | $ / bbl		1.75
Derivative, Average Floor Price | $ / bbl		45
Put Options Derivative Contracts September (closed) [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount | bbl		82,500
Put Option Premium | $ / bbl		1.75
Derivative, Average Floor Price | $ / bbl		45
Crude Oil and Natural Gas Derivative Contracts [Member] | Liabilities From Price Risk Management Activities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Current	[2]	$ 0	0
Derivative Assets, Current, Gross	[2]	9,000,000	12,000,000
Derivative Liabilities, Current, Gross	[2]	9,000,000	12,000,000
Crude Oil and Natural Gas Derivative Contracts [Member] | Assets From Price Risk Management Activities [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets, Current	[3]	71,000,000	465,000,000
Derivative Assets, Current, Gross	[3]	80,000,000	477,000,000
Derivative Liabilities, Current, Gross	[3]	$ 9,000,000	$ 12,000,000
[1]	EOG has entered into natural gas price swap contracts which give counterparties the option of entering into price swap 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 price swap contracts will increase by 175,000 MMBtud at an average price of $4.51 per MMBtu for each month during the period November 1, 2015 through December 31, 2015.
[2]	The current portion of Liabilities from Price Risk Management Activities consists of gross liabilities of $9 million, offset by gross assets of $9 million at September 30, 2015, and gross liabilities of $12 million, offset by gross assets of $12 million at December 31, 2014.
[3]	The current portion of Assets from Price Risk Management Activities consists of gross assets of $80 million, partially offset by gross liabilities of $9 million at September 30, 2015, and gross assets of $477 million, partially offset by gross liabilities of $12 million at December 31, 2014.

Acquisitions and Divestitures (

Acquisitions and Divestitures (Details) - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]
Aggregate purchase price to acquire proved crude oil properties and related assets	$ 368
Proceeds from Sales of Producing Properties, Acreage and Other Assets	$ 144	$ 91
Proceeds from Sales of Canadian Operations			$ 400
Cumulative Translation Adjustments Reclassified to Income in Connection With Sales of Canadian Operations			383
Restricted Cash Released in Connection With Sales of Canadian Operations			$ 150