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Segment Information
 9 Months Ended
Sep. 30, 2025
Segment Reporting [Abstract]  
Segment Information Segment Information
EOG's operations are all crude oil, natural gas liquids (NGLs) and natural gas exploration and production-related. The Segment Reporting Topic of the Accounting Standards Codification (ASC) establishes standards for reporting information about operating segments in annual and interim financial statements. Operating segments are defined as components of an enterprise about which separate financial information is available and evaluated regularly by the chief operating decision maker, or decision-making group, in deciding how to allocate resources and in assessing performance. EOG's chief operating decision makers (CODM) are the Chairman of the Board and Chief Executive Officer, the Executive Vice President and Chief Operating Officer, the Executive Vice President and Chief Financial Officer, the Executive Vice President and Chief Legal Officer, and the Senior Vice Presidents, Exploration and Production.

The CODM routinely review and make operating decisions related to significant issues associated with each of EOG's major producing areas (including in the United States and in Trinidad) and its exploration programs both inside and outside the United States. For segment reporting purposes, the CODM consider the major United States producing areas to be one operating segment. The CODM use operating income (loss) to assess performance and allocate resources.

Financial information by reportable segment is presented below for the three-month and nine-month periods ended September 30, 2025 and 2024 (in millions):
 United
States		Trinidad
Other
International (1)
Total
Three Months Ended September 30, 2025
Crude Oil and Condensate$3,234 $9 $— $3,243 
NGLs604 — — 604 
Natural Gas626 80 1 707 
Gains on Mark-to-Market Financial Commodity and Other Derivative Contracts, Net116 — — 116 
Gathering, Processing and Marketing1,175 3 — 1,178 
Losses on Asset Dispositions, Net(18)— — (18)
Other, Net17 — — 17 
Operating Revenues and Other5,754 92 1 5,847 
Lease and Well413 13 5 
Gathering, Processing and Transportation Costs587 — — 
Marketing Costs1,134 — — 
Depreciation, Depletion and Amortization1,134 35 — 
General and Administrative232 5 2 
Taxes Other Than Income307 1 1 
Other Segment Items (2)
113 21 8 
Operating Income (Loss)1,834 17 (15)1,836 
Interest Income57 
Other Income2 
Interest Expense, Net(71)
Income Before Income Taxes$1,824 
Other Segment Disclosures:
Additions to Oil and Gas Properties, Excluding Dry Hole Costs (3)
8,046 48 34 8,128 
Interest Expense, Net71 — — 71 
Interest Income53 31 57 
 United
States		Trinidad
Other
International (1)
Total
Three Months Ended September 30, 2024
Crude Oil and Condensate$3,482 $6 $— $3,488 
NGLs524 — — 524 
Natural Gas296 76 — 372 
Gains on Mark-to-Market Financial Commodity and Other Derivative Contracts, Net79 — — 79 
Gathering, Processing and Marketing1,481 — — 1,481 
Gains (Losses) on Asset Dispositions, Net(8)1 — (7)
Other, Net27 1 — 28 
Operating Revenues and Other5,881 84 — 5,965 
Lease and Well380 12 — 
Gathering, Processing and Transportation Costs445 — — 
Marketing Costs1,500 — — 
Depreciation, Depletion and Amortization996 35 — 
General and Administrative162 4 1 
Taxes Other Than Income281 1 1 
Other Segment Items (2)
54 2 2 
Operating Income (Loss)2,063 30 (4)2,089 
Interest Income76 
Other Income— 
Interest Expense, Net(31)
Income Before Income Taxes$2,134 
Other Segment Disclosures:
Additions to Oil and Gas Properties, Excluding Dry Hole Costs1,246 31 3 1,280 
Interest Expense, Net31 — — 31 
Interest Income71 4 1 76 
 United
States		Trinidad
Other
International (1)
Total
Nine Months Ended September 30, 2025
Crude Oil and Condensate$9,489 $21 $— $9,510 
NGLs1,710 — — 1,710 
Natural Gas1,696 247 1 1,944 
Gains on Mark-to-Market Financial Commodity and Other Derivative Contracts, Net32 — — 32 
Gathering, Processing and Marketing3,761 4 — 3,765 
Losses on Asset Dispositions, Net(18)— (1)(19)
Other, Net52 — — 52 
Operating Revenues and Other16,722 272 — 16,994 
Lease and Well1,181 37 10 
Gathering, Processing and Transportation Costs1,481 1 — 
Marketing Costs3,675 — — 
Depreciation, Depletion and Amortization3,113 122 — 
General and Administrative572 13 11 
Taxes Other Than Income947 3 1 
Other Segment Items (2)
274 61 50 
Operating Income (Loss)5,479 35 (72)5,442 
Interest Income181 
Other Expense(2)
Interest Expense, Net(169)
Income Before Income Taxes$5,452 
Other Segment Disclosures:
Additions to Oil and Gas Properties, Excluding Dry Hole Costs (3)
11,030 107 37 11,174 
Total Property, Plant and Equipment, Net42,024 499 62 42,585 
Total Assets50,783 1,145 271 52,199 
Interest Expense, Net169 — — 169 
Interest Income169 8 4 181 
 United
States		Trinidad
Other
International (1)
Total
Nine Months Ended September 30, 2024
Crude Oil and Condensate$10,646 $14 $— $10,660 
NGLs1,552 — — 1,552 
Natural Gas852 205 — 1,057 
Gains on Mark-to-Market Financial Commodity and Other Derivative Contracts, Net
269 — — 269 
Gathering, Processing and Marketing4,458 1 — 4,459 
Gains (Losses) on Asset Dispositions, Net44 (5)— 39 
Other, Net76 1 — 77 
Operating Revenues and Other17,897 216 — 18,113 
Lease and Well1,147 31 — 
Gathering, Processing and Transportation Costs1,281 — — 
Marketing Costs4,394 — — 
Depreciation, Depletion and Amortization2,987 101 1 
General and Administrative465 11 4 
Taxes Other Than Income955 2 1 
Other Segment Items (2)
194 9 40 
Operating Income (Loss)6,474 62 (46)6,490 
Interest Income208 
Other Expense(4)
Interest Expense, Net(100)
Income Before Income Taxes$6,594 
Other Segment Disclosures:
Additions to Oil and Gas Properties, Excluding Dry Hole Costs4,089 112 4 4,205 
Total Property, Plant and Equipment, Net33,683 422 21 34,126 
Total Assets44,867 1,094 190 46,151 
Interest Expense, Net100 — — 100 
Interest Income192 12 4 208 
(1)    Other International primarily consists of EOG's Australia, Kingdom of Bahrain, Canada and United Arab Emirates operations. EOG is continuing the process of exiting its Canada operations.
(2)    Other Segment Items include Exploration Costs, Dry Hole Costs and Impairments. Other Segment Items primarily relate to exploration expense in the Kingdom of Bahrain and United Arab Emirates for the three-month period ended September 30, 2025 and to exploration expense in the Kingdom of Bahrain and United Arab Emirates and impairment in Canada for the nine-month period ended September 30, 2025.
(3)    Includes oil and gas properties from the Encino Acquisition Partners, LLC (Encino) acquisition of $6,633 million.