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Employee Benefit Plans (Details) $ / shares in Units, $ in Thousands |  | 12 Months Ended
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Feb. 01, 2021 shares | Dec. 31, 2021 USD ($) participants $ / shares shares | Dec. 31, 2020 USD ($) participants $ / shares shares | Dec. 31, 2019 USD ($) participants $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Compensation expense related to the company's stock-based compensation plans | $ |  |  | $ 152,000 |  | $ 146,000 |  | $ 175,000
Aggregate Maximum of Common Shares |  |  | 20,000,000 |  |  |  |
Common Shares Available for Grant |  |  | 18,000,000 |  |  |  |
Share-based Payment Arrangement, Expense, Tax Deficiencies | $ |  |  | $ (11,000) |  | (22,000) |  | (1,000)
Stock Options and Sars [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Maximum term of stock options and SARs granted |  |  | 7 years |  |  |  |
Stock-Based Compensation Expense | $ |  |  | $ 48,000 |  | $ 62,000 |  | $ 63,000
Unrecognized compensation expense | $ |  |  | $ 60,000 |  |  |  |
Stock Options/SARs Vested or Expected to Vest (in shares) |  |  | 9,700,000 |  |  |  |
Intrinsic value of stock options/SARs vested or expected to vest | $ |  |  | $ 120,000 |  |  |  |
Weighted Average Remaining Contractual Life for Stock Options/SARs Vested or Expected to Vest |  |  | 4 years 1 month 6 days |  |  |  |
Weighted average period over which unrecognized compensation expense will be recognized |  |  | 2 years 1 month 6 days |  |  |  |
Weighted average grant price for stock options/SARs vested or expected to vest (per share) | $ / shares |  |  | $ 84.97 |  |  |  |
Stock Options and SARs Rollforward [Abstract] |  |  |  |  |  |  |
Outstanding at January 1 (in shares) |  |  | 10,186,000 |  | 9,395,000 |  | 8,310,000
Granted (in shares) |  |  | 1,982,000 |  | 1,996,000 |  | 1,965,000
Exercised (1) (in shares) | [1] |  | (1,130,000) |  | (23,000) |  | (606,000)
Forfeited (in shares) |  |  | (1,069,000) |  | (1,182,000) |  | (274,000)
Outstanding at December 31 (in shares) |  |  | 9,969,000 |  | 10,186,000 |  | 9,395,000
Stock Options/SARs Exercisable at December 31 (in shares) |  |  | 6,197,000 |  | 6,343,000 |  | 5,275,000
Intrinsic Value Of Stock Options/SARs Exercised During The Period | $ |  |  | $ 27,000 |  | $ 400 |  | $ 14,000
Weighted Average Grant Price Stock Option and SARs [Rollfoward] |  |  |  |  |  |  |
Outstanding at January 1 (in dollars per share) | $ / shares |  |  | $ 84.08 |  | $ 94.53 |  | $ 96.90
Granted (in dollars per share) | $ / shares |  |  | 81.68 |  | 37.63 |  | 75.39
Exercised (in dollars per share) | $ / shares | [1] |  | 63.98 |  | 69.59 |  | 61.43
Forfeited (in dollars per share) | $ / shares |  |  | 98.15 |  | 88.93 |  | 102.57
Outstanding at December 31 (in dollars per share) | $ / shares |  |  | 84.37 |  | 84.08 |  | 94.53
Stock Options/SARs Exercisable at December 31 (in dollars per share) | $ / shares |  |  | 95.33 |  | 96.41 |  | 94.21
Weighted Average Fair Value And Valuation Assumptions Used To Value Stock Options/SARs, ESPP, and Performance Units/Stock-Based Compensation [Abstract] |  |  |  |  |  |  |
Weighted Average Fair Value of Grants (price per share) | $ / shares |  |  | $ 24.92 |  | $ 11.06 |  | $ 19.49
Expected Volatility (in hundredths) |  |  | 42.24% |  | 44.47% |  | 32.02%
Risk-Free Interest Rate (in hundredths) |  |  | 0.50% |  | 0.21% |  | 1.69%
Dividend Yield (in hundredths) |  |  | 2.26% |  | 3.27% |  | 1.39%
Expected Life (in years) |  |  | 5 years 2 months 12 days |  | 5 years 2 months 12 days |  | 5 years 1 month 6 days
Summary Information By Grant Price Range For Stock Options And SARs Outstanding And Exercisable At End Of Period [Line Items] |  |  |  |  |  |  |
Stock Options and SARs Outstanding |  |  | 9,969,000 |  |  |  |
Weighted Average Remaining Life for Outstanding Options and SARs |  |  | 4 years |  |  |  |
Weighted Average Grant Price For Outstanding Options and SARs | $ / shares |  |  | $ 84.37 |  |  |  |
Aggregate Intrinsic Value For Outstanding Options and SARs | $ | [2] |  | $ 127,000 |  |  |  |
Stock Options and SARs Exercisable |  |  | 6,197,000 |  |  |  |
Weighted Average Remaining Life For Exercisable Units |  |  | 3 years |  |  |  |
Weighted Average Grant Price For Exercisable Options and SARs | $ / shares |  |  | $ 95.33 |  |  |  |
Aggregate Intrinsic Value For Exercisable Units | $ | [2] |  | $ 42,000 |  |  |  |
Stock Options and Sars [Member] | Vesting Schedule - First Anniversary [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting Period Increments (in hundredths) |  |  | 33.30% |  |  |  |
Stock Options and Sars [Member] | Vesting Schedule - Second Anniversary [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting Period Increments (in hundredths) |  |  | 33.30% |  |  |  |
Stock Options and Sars [Member] | Vesting Schedule - Third Anniversary [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Vesting Period Increments (in hundredths) |  |  | 33.40% |  |  |  |
ESPP [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Common Shares Available for Grant |  |  | 1,600,000 |  |  |  |
Maximum Percentage Of Employee Pay Eligible For Contribution To ESPP Percentage |  |  | 10.00% |  |  |  |
Percentage of fair market value at which employees may purchase company stock via the ESPP |  |  | 85.00% |  |  |  |
Employee Stock Purchase Plan (ESPP) Disclosures [Abstract] |  |  |  |  |  |  |
Aggregate Purchase Price | $ |  |  | $ 17,224 |  | $ 16,103 |  | $ 16,533
Shares Purchased |  |  | 316,000 |  | 377,000 |  | 224,000
Approximate Number of Participants | participants |  |  | 2,036 |  | 2,063 |  | 1,998
Weighted Average Fair Value And Valuation Assumptions Used To Value Stock Options/SARs, ESPP, and Performance Units/Stock-Based Compensation [Abstract] |  |  |  |  |  |  |
Weighted Average Fair Value of Grants (price per share) | $ / shares |  |  | $ 18.12 |  | $ 19.14 |  | $ 22.83
Expected Volatility (in hundredths) |  |  | 51.27% |  | 53.48% |  | 34.78%
Risk-Free Interest Rate (in hundredths) |  |  | 0.07% |  | 0.90% |  | 2.27%
Dividend Yield (in hundredths) |  |  | 2.89% |  | 2.27% |  | 1.04%
Expected Life (in years) |  |  | 6 months |  | 6 months |  | 6 months
Restricted Stock and Restricted Stock Units [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Stock-Based Compensation Expense | $ |  |  | $ 89,000 |  | $ 75,000 |  | $ 97,000
Intrinsic value released during the year | $ |  |  | 110,000 |  | 48,000 |  | 70,000
Aggregate intrinsic value of stock and unit outstanding | $ |  |  | 416,000 |  | $ 236,000 |  | $ 381,000
Unrecognized compensation expense | $ |  |  | $ 199,000 |  |  |  |
Weighted average period over which unrecognized compensation expense will be recognized |  |  | 1 year 6 months |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  | 3 years |  |  |  |
Number of Shares and Units [Roll Forward] |  |  |  |  |  |  |
Outstanding at January 1 (in shares) |  |  | 4,742,000 | [3] | 4,546,000 | [3] | 3,792,000
Granted (in shares) |  |  | 1,422,000 |  | 1,488,000 |  | 1,749,000
Released (in shares) | [4] |  | (1,388,000) |  | (1,213,000) |  | (855,000)
Forfeited (in shares) |  |  | (96,000) |  | (79,000) |  | (140,000)
Outstanding at December 31 (in shares) | [3] |  | 4,680,000 |  | 4,742,000 |  | 4,546,000
Weighted Average Grant Fair Value [Abstract] |  |  |  |  |  |  |
Outstanding at January 1 (in dollars per share) | $ / shares |  |  | $ 74.97 | [3] | $ 90.16 | [3] | $ 96.64
Granted (in dollars per share) | $ / shares |  |  | 81.50 |  | 38.10 |  | 80.01
Released (in dollars per share) | $ / shares | [4] |  | 101.00 |  | 85.92 |  | 96.93
Forfeited (in dollars per share) | $ / shares |  |  | 68.26 |  | 86.52 |  | 97.54
Outstanding at December 31 (in dollars per share) | $ / shares | [3] |  | $ 69.37 |  | $ 74.97 |  | $ 90.16
Performance Units [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Compensation expense related to the company's stock-based compensation plans | $ |  |  | $ 15,000 |  | $ 9,000 |  | $ 15,000
Intrinsic value released during the year | $ |  |  | 13,000 |  | 13,000 |  | 15,000
Aggregate intrinsic value of stock and unit outstanding | $ |  |  | 60,000 |  | $ 31,000 |  | $ 50,000
Unrecognized compensation expense | $ |  |  | $ 13,000 |  |  |  |
Weighted average period over which unrecognized compensation expense will be recognized |  |  | 1 year 10 months 24 days |  |  |  |
Cliff Vesting Period |  |  | 3 years 5 months 1 day |  |  |  |
Number of Shares and Units [Roll Forward] |  |  |  |  |  |  |
Outstanding at January 1 (in shares) |  |  | 613,000 | [5] | 598,000 | [5] | 539,000
Granted (in shares) |  |  | 222,000 |  | 172,000 |  | 172,000
Granted for Performance Multiple (1) (in shares) | [6] |  | 19,000 |  | 66,000 |  | 72,000
Released (in shares) | [7] |  | (175,000) |  | (223,000) |  | (185,000)
Forfeited (in shares) |  |  | 0 |  | 0 |  | 0
Outstanding at December 31 (in shares) | [5] |  | 679,000 | [8] | 613,000 |  | 598,000
Weighted Average Grant Fair Value [Abstract] |  |  |  |  |  |  |
Outstanding at January 1 (in dollars per share) | $ / shares |  |  | $ 88.38 | [5] | $ 103.91 | [5] | $ 116.96
Granted (in dollars per share) | $ / shares |  |  | 95.16 |  | 42.77 |  | 79.98
Granted for Performance Multiple (1) (in dollars per share) | $ / shares | [6] |  | 113.81 |  | 119.10 |  | 80.64
Released (in dollars per share) | $ / shares | [7] |  | 113.06 |  | 103.87 |  | 110.65
Forfeited (in dollars per share) | $ / shares |  |  | 0 |  | 0 |  | 0
Outstanding at December 31 (in dollars per share) | $ / shares | [5] |  | 84.97 |  | 88.38 |  | 103.91
Weighted Average Fair Value And Valuation Assumptions Used To Value Stock Options/SARs, ESPP, and Performance Units/Stock-Based Compensation [Abstract] |  |  |  |  |  |  |
Weighted Average Fair Value of Grants (price per share) | $ / shares |  |  | $ 95.16 |  | $ 42.77 |  | $ 79.98
Expected Volatility (in hundredths) |  |  | 53.80% |  | 47.27% |  | 29.20%
Risk-Free Interest Rate (in hundredths) |  |  | 0.59% |  | 0.16% |  | 1.51%
Performance Units and Performance Stock [Abstract] |  |  |  |  |  |  |
performance period for performance units |  |  | 3 years |  |  |  |
Minimum Performance Multiple at the Completion Performance Period |  |  | 0.00% |  |  |  |
Maximum Performance Multiple at the Completion Performance Period |  |  | 200.00% |  |  |  |
Performance Multiple Applied at the Completion Period |  | 50.00% | 125.00% |  | 150.00% |  | 200.00%
Minimum Performance Units and Stock Allowed to be Outstanding |  |  | 0 |  |  |  |
Maximum Performance Units and Stock Allowed to be Outstanding |  |  | 1,358 |  |  |  |
Additional Performance Awards Granted |  | 56,671 |  |  |  |  |
Pension Plans [Member] |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |
Total pension plan costs | $ |  |  | $ 52,000 |  | $ 46,000 |  | $ 51,000
Company contributions to foreign pension plans | $ |  |  | 1,000 |  | 1,000 |  | 1,000
Defined Benefit Plan, Benefit Obligation | $ |  |  | 13,000 |  | 13,000 |  |
Fair value of foreign pension plan assets | $ |  |  | 14,000 |  | 12,000 |  |
Prepaid benefit cost | $ |  |  | (100) |  |  |  |
Accrued benefit cost | $ |  |  |  |  | 100 |  |
Lease And Well [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Compensation expense related to the company's stock-based compensation plans | $ |  |  | 49,000 |  | 52,000 |  | 56,000
Gathering And Processing Costs [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Compensation expense related to the company's stock-based compensation plans | $ |  |  | 3,000 |  | 1,000 |  | 1,000
Exploration Costs [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Compensation expense related to the company's stock-based compensation plans | $ |  |  | 20,000 |  | 21,000 |  | 26,000
General And Administrative [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Compensation expense related to the company's stock-based compensation plans | $ |  |  | $ 80,000 |  | $ 72,000 |  | $ 92,000
$ 34.00 to $ 52.99 | Stock Options and Sars [Member] |  |  |  |  |  |  |
Summary Information By Grant Price Range For Stock Options And SARs Outstanding And Exercisable At End Of Period [Line Items] |  |  |  |  |  |  |
Stock Options and SARs Outstanding |  |  | 1,640,000 |  |  |  |
Weighted Average Remaining Life for Outstanding Options and SARs |  |  | 6 years |  |  |  |
Weighted Average Grant Price For Outstanding Options and SARs | $ / shares |  |  | $ 37.50 |  |  |  |
Stock Options and SARs Exercisable |  |  | 414,000 |  |  |  |
Weighted Average Remaining Life For Exercisable Units |  |  | 5 years |  |  |  |
Weighted Average Grant Price For Exercisable Options and SARs | $ / shares |  |  | $ 37.46 |  |  |  |
53.00 to 75.99 | Stock Options and Sars [Member] |  |  |  |  |  |  |
Summary Information By Grant Price Range For Stock Options And SARs Outstanding And Exercisable At End Of Period [Line Items] |  |  |  |  |  |  |
Stock Options and SARs Outstanding |  |  | 1,906,000 |  |  |  |
Weighted Average Remaining Life for Outstanding Options and SARs |  |  | 4 years |  |  |  |
Weighted Average Grant Price For Outstanding Options and SARs | $ / shares |  |  | $ 73.68 |  |  |  |
Stock Options and SARs Exercisable |  |  | 1,313,000 |  |  |  |
Weighted Average Remaining Life For Exercisable Units |  |  | 3 years |  |  |  |
Weighted Average Grant Price For Exercisable Options and SARs | $ / shares |  |  | $ 73.11 |  |  |  |
76.00 to 90.99 | Stock Options and Sars [Member] |  |  |  |  |  |  |
Summary Information By Grant Price Range For Stock Options And SARs Outstanding And Exercisable At End Of Period [Line Items] |  |  |  |  |  |  |
Stock Options and SARs Outstanding |  |  | 1,976,000 |  |  |  |
Weighted Average Remaining Life for Outstanding Options and SARs |  |  | 7 years |  |  |  |
Weighted Average Grant Price For Outstanding Options and SARs | $ / shares |  |  | $ 81.86 |  |  |  |
Stock Options and SARs Exercisable |  |  | 33,000 |  |  |  |
Weighted Average Remaining Life For Exercisable Units |  |  | 2 years |  |  |  |
Weighted Average Grant Price For Exercisable Options and SARs | $ / shares |  |  | $ 83.71 |  |  |  |
91.00 to 95.99 | Stock Options and Sars [Member] |  |  |  |  |  |  |
Summary Information By Grant Price Range For Stock Options And SARs Outstanding And Exercisable At End Of Period [Line Items] |  |  |  |  |  |  |
Stock Options and SARs Outstanding |  |  | 1,114,000 |  |  |  |
Weighted Average Remaining Life for Outstanding Options and SARs |  |  | 2 years |  |  |  |
Weighted Average Grant Price For Outstanding Options and SARs | $ / shares |  |  | $ 94.95 |  |  |  |
Stock Options and SARs Exercisable |  |  | 1,109,000 |  |  |  |
Weighted Average Remaining Life For Exercisable Units |  |  | 2 years |  |  |  |
Weighted Average Grant Price For Exercisable Options and SARs | $ / shares |  |  | $ 94.96 |  |  |  |
96.00 to 101.99 | Stock Options and Sars [Member] |  |  |  |  |  |  |
Summary Information By Grant Price Range For Stock Options And SARs Outstanding And Exercisable At End Of Period [Line Items] |  |  |  |  |  |  |
Stock Options and SARs Outstanding |  |  | 1,657,000 |  |  |  |
Weighted Average Remaining Life for Outstanding Options and SARs |  |  | 3 years |  |  |  |
Weighted Average Grant Price For Outstanding Options and SARs | $ / shares |  |  | $ 96.34 |  |  |  |
Stock Options and SARs Exercisable |  |  | 1,652,000 |  |  |  |
Weighted Average Remaining Life For Exercisable Units |  |  | 3 years |  |  |  |
Weighted Average Grant Price For Exercisable Options and SARs | $ / shares |  |  | $ 96.33 |  |  |  |
102.00 to 129.99 | Stock Options and Sars [Member] |  |  |  |  |  |  |
Summary Information By Grant Price Range For Stock Options And SARs Outstanding And Exercisable At End Of Period [Line Items] |  |  |  |  |  |  |
Stock Options and SARs Outstanding |  |  | 1,676,000 |  |  |  |
Weighted Average Remaining Life for Outstanding Options and SARs |  |  | 4 years |  |  |  |
Weighted Average Grant Price For Outstanding Options and SARs | $ / shares |  |  | $ 126.51 |  |  |  |
Stock Options and SARs Exercisable |  |  | 1,676,000 |  |  |  |
Weighted Average Remaining Life For Exercisable Units |  |  | 4 years |  |  |  |
Weighted Average Grant Price For Exercisable Options and SARs | $ / shares |  |  | $ 126.51 |  |  |  |
[1] | The total intrinsic value of stock options/SARs exercised during the years 2021, 2020 and 2019 was $27 million, $0.4 million and $14 million, respectively. The intrinsic value is based upon the difference between the market price of the Common Stock on the date of exercise and the grant price of the stock options/SARs.
[2] | Based upon the difference between the closing market price of the Common Stock on the last trading day of the year and the grant price of in-the-money stock options and SARs, in millions.
[3] | The total intrinsic value of restricted stock and restricted stock units outstanding at December 31, 2021, 2020 and 2019 was $416 million, $236 million and $381 million, respectively. The intrinsic value is based on the closing market price of the Common Stock on the last trading day of the year.
[4] | The total intrinsic value of restricted stock and restricted stock units released during the years ended December 31, 2021, 2020 and 2019 was $110 million, $48 million and $70 million, respectively. The intrinsic value is based upon the closing price of EOG's common stock on the date restricted stock and restricted stock units are released.(2)
[5] | The total intrinsic value of Performance Units outstanding at December 31, 2021, 2020 and 2019 was $60 million, $31 million and $50 million, respectively. The intrinsic value is based on the closing market price of the Common Stock on the last trading day of the year.
[6] | Upon completion of the Performance Period for the Performance Units granted in 2017, 2016 and 2015, a performance multiple of 125%, 150% and 200%, respectively, was applied to each of the grants resulting in additional grants of Performance Units in February 2021, 2020 and 2019.
[7] | The total intrinsic value of Performance Units released during the years ended December 31, 2021, 2020 and 2019 was $13 million, $13 million and $15 million, respectively. The intrinsic value is based upon the closing price of EOG's common stock on the date Performance Units are released.
[8] | Upon the application of the relevant performance multiple at the completion of each of the remaining Performance Periods, a minimum of zero and a maximum of 1,358 Performance Units could be outstanding.

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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