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Business Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Revenues and Other |  | $ 4,320,246 | $ 4,303,455 | $ 4,697,630 | $ 4,058,642 | $ 4,574,536 | $ 4,781,624 | $ 4,238,077 | $ 3,681,162 | $ 17,379,973 |  | $ 17,275,399 |  | $ 11,208,320 |
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  |  | 3,749,704 |  | 3,435,408 |  | 3,409,387 |
Operating Income (Loss) |  | 863,751 | 827,959 | 1,130,771 | 876,530 | 1,123,140 | 1,506,687 | 964,931 | 874,588 | 3,699,011 |  | 4,469,346 |  | 926,402 |
Interest Income |  |  |  |  |  |  |  |  |  | 26,026 |  | 11,546 |  | 7,713 |
Other Income |  |  |  |  |  |  |  |  |  | 5,359 |  | 5,158 |  | 1,439 |
Net Interest Expense |  |  |  |  |  |  |  |  |  | 185,129 |  | 245,052 |  | 274,372 |
Income (Loss) Before Income Taxes |  |  |  |  |  |  |  |  |  | 3,545,267 |  | 4,240,998 |  | 661,182 |
Income Tax Provision (Benefit) |  | 194,687 | $ 182,335 | $ 241,525 | $ 191,810 | 195,572 | $ 255,411 | $ 196,205 | $ 174,770 | 810,357 |  | 821,958 |  | (1,921,397) |
Additions to Oil and Gas Properties, Excluding Dry Hole Costs |  |  |  |  |  |  |  |  |  | 6,273,952 |  | 6,195,330 |  | 4,228,228 |
Total Property, Plant and Equipment, Net |  | 30,364,595 |  |  |  | 28,075,519 |  |  |  | 30,364,595 |  | 28,075,519 |  | 25,665,037 |
Total Assets |  | 37,124,608 |  |  |  | 33,934,474 |  |  |  | 37,124,608 |  | 33,934,474 |  | 29,833,078 |
Crude Oil and Condensate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 9,612,532 |  | 9,517,440 |  | 6,256,396 |
Natural Gas Liquids |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 784,818 |  | 1,127,510 |  | 729,561 |
Natural Gas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 1,184,095 |  | 1,301,537 |  | 921,934 |
Gains (Losses) on Mark-to-Market Commodity Derivative Contracts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 180,275 |  | (165,640) |  | 19,828 |
Gathering, Processing and Marketing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 5,360,282 |  | 5,230,355 |  | 3,298,087 |
Gains (Losses) on Asset Dispositions, Net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 123,613 |  | 174,562 |  | (99,096) |
Other, Net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 134,358 |  | 89,635 |  | 81,610 |
United States |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Revenues and Other |  |  |  |  |  |  |  |  |  | 17,052,363 | [1] | 16,794,591 | [2] | 10,872,071 | [3]
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  |  | 3,652,294 |  | 3,296,499 |  | 3,269,196 |
Operating Income (Loss) |  |  |  |  |  |  |  |  |  | 3,618,907 |  | 4,334,364 |  | 933,571 |
Interest Income |  |  |  |  |  |  |  |  |  | 22,122 |  | 9,326 |  | 3,223 |
Other Income |  |  |  |  |  |  |  |  |  | 3,235 |  | 9,580 |  |  |
Other Expense |  |  |  |  |  |  |  |  |  |  |  |  |  | (9,659) |
Net Interest Expense |  |  |  |  |  |  |  |  |  | 192,587 |  | 253,352 |  | 303,941 |
Income (Loss) Before Income Taxes |  |  |  |  |  |  |  |  |  | 3,451,677 |  | 4,099,918 |  | 623,194 |
Income Tax Provision (Benefit) |  |  |  |  |  |  |  |  |  | 760,881 |  | 765,986 |  | (1,964,343) |
Additions to Oil and Gas Properties, Excluding Dry Hole Costs |  |  |  |  |  |  |  |  |  | 6,208,394 |  | 6,155,874 |  | 4,067,359 |
Total Property, Plant and Equipment, Net |  | 30,101,857 |  |  |  | 27,786,086 |  |  |  | 30,101,857 |  | 27,786,086 |  | 25,125,427 |
Total Assets |  | 36,274,942 |  |  |  | 33,178,733 |  |  |  | 36,274,942 |  | 33,178,733 |  | 28,312,599 |
Amount of sales with a single significant purchaser in the United States segment |  |  |  |  |  |  |  |  |  | 2,400,000 |  | 2,600,000 |  | 1,500,000 |
Amount of sales with a second significant purchaser in the United States segment. |  |  |  |  |  |  |  |  |  | 2,200,000 |  | 2,300,000 |  | 1,300,000 |
United States | Crude Oil and Condensate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 9,599,125 |  | 9,390,244 |  | 6,225,711 |
United States | Natural Gas Liquids |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 784,818 |  | 1,127,510 |  | 729,545 |
United States | Natural Gas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 866,911 |  | 970,866 |  | 615,512 |
United States | Gains (Losses) on Mark-to-Market Commodity Derivative Contracts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 180,275 |  | (165,640) |  | 19,828 |
United States | Gathering, Processing and Marketing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 5,355,463 |  | 5,227,051 |  | 3,298,098 |
United States | Gains (Losses) on Asset Dispositions, Net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 131,446 |  | 154,852 |  | (98,233) |
United States | Other, Net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 134,325 |  | 89,708 |  | 81,610 |
Trinidad |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Revenues and Other |  |  |  |  |  |  |  |  |  | 271,106 |  | 309,860 |  | 284,713 |
Depreciation, Depletion and Amortization |  |  |  |  |  |  |  |  |  | 79,389 |  | 91,971 |  | 115,321 |
Operating Income (Loss) |  |  |  |  |  |  |  |  |  | 112,790 |  | 147,240 |  | 101,010 |
Interest Income |  |  |  |  |  |  |  |  |  | 3,686 |  | 1,612 |  | 2,201 |
Other Income |  |  |  |  |  |  |  |  |  | 727 |  | 2,436 |  | 3,337 |
Net Interest Expense |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Income (Loss) Before Income Taxes |  |  |  |  |  |  |  |  |  | 117,203 |  | 151,288 |  | 106,548 |
Income Tax Provision (Benefit) |  |  |  |  |  |  |  |  |  | 40,901 |  | 54,272 |  | 38,798 |
Additions to Oil and Gas Properties, Excluding Dry Hole Costs |  |  |  |  |  |  |  |  |  | 53,325 |  | 1,618 |  | 145,937 |
Total Property, Plant and Equipment, Net |  | 184,606 |  |  |  | 210,183 |  |  |  | 184,606 |  | 210,183 |  | 313,357 |
Total Assets |  | 705,747 |  |  |  | 629,633 |  |  |  | 705,747 |  | 629,633 |  | 974,477 |
Trinidad | Crude Oil and Condensate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 11,138 |  | 17,059 |  | 13,572 |
Trinidad | Natural Gas Liquids |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Trinidad | Natural Gas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 258,819 |  | 285,053 |  | 271,101 |
Trinidad | Gains (Losses) on Mark-to-Market Commodity Derivative Contracts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Trinidad | Gathering, Processing and Marketing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 4,819 |  | 3,304 |  | (11) |
Trinidad | Gains (Losses) on Asset Dispositions, Net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | (3,688) |  | 4,493 |  | (8) |
Trinidad | Other, Net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  | 18 |  | (49) |  | 59 |
Other International |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Revenues and Other | [4] |  |  |  |  |  |  |  |  | 56,504 |  | 170,948 |  | 51,536 |
Depreciation, Depletion and Amortization | [4] |  |  |  |  |  |  |  |  | 18,021 |  | 46,938 |  | 24,870 |
Operating Income (Loss) | [4] |  |  |  |  |  |  |  |  | (32,686) |  | (12,258) |  | (108,179) |
Interest Income | [4] |  |  |  |  |  |  |  |  | 218 |  | 608 |  | 2,289 |
Other Income |  |  |  |  |  |  |  |  |  | 1,397 |  |  |  | 7,761 | [4]
Other Expense | [4] |  |  |  |  |  |  |  |  |  |  | (6,858) |  |  |
Net Interest Expense | [4] |  |  |  |  |  |  |  |  | (7,458) |  | (8,300) |  | (29,569) |
Income (Loss) Before Income Taxes | [4] |  |  |  |  |  |  |  |  | (23,613) |  | (10,208) |  | (68,560) |
Income Tax Provision (Benefit) | [4] |  |  |  |  |  |  |  |  | 8,575 |  | 1,700 |  | 4,148 |
Additions to Oil and Gas Properties, Excluding Dry Hole Costs | [4] |  |  |  |  |  |  |  |  | 12,233 |  | 37,838 |  | 14,932 |
Total Property, Plant and Equipment, Net | [4] | 78,132 |  |  |  | 79,250 |  |  |  | 78,132 |  | 79,250 |  | 226,253 |
Total Assets | [4] | $ 143,919 |  |  |  | $ 126,108 |  |  |  | 143,919 |  | 126,108 |  | 546,002 |
Other International | Crude Oil and Condensate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | [4] |  |  |  |  |  |  |  |  | 2,269 |  | 110,137 |  | 17,113 |
Other International | Natural Gas Liquids |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | [4] |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 16 |
Other International | Natural Gas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | [4] |  |  |  |  |  |  |  |  | 58,365 |  | 45,618 |  | 35,321 |
Other International | Gains (Losses) on Mark-to-Market Commodity Derivative Contracts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | [4] |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Other International | Gathering, Processing and Marketing |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | [4] |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Other International | Gains (Losses) on Asset Dispositions, Net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | [4] |  |  |  |  |  |  |  |  | (4,145) |  | 15,217 |  | (855) |
Other International | Other, Net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | [4] |  |  |  |  |  |  |  |  | $ 15 |  | $ (24) |  | $ (59) |
[1] | EOG had sales activity with two significant purchasers in 2019, one totaling $2.4 billion, and the other totaling $2.2 billion of consolidated Operating Revenues and Other in the United States segment.
[2] | EOG had sales activity with two significant purchasers in 2018, one totaling $2.6 billion and the other totaling $2.3 billion of consolidated Operating Revenues and Other in the United States segment.
[3] | EOG had sales activity with two significant purchasers in 2017, one totaling $1.5 billion and the other totaling $1.3 billion of consolidated Operating Revenues and Other in the United States segment.
[4] | Other International primarily consists of EOG's United Kingdom, China and Canada operations. The United Kingdom operations were sold in the fourth quarter of 2018.

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