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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2025
Fair Value Disclosures [Abstract] |
Schedule of 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 March 31, 2025 and December 31, 2024 (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 March 31, 2025 |  |  |  |  |  |  |
Financial Assets: |  |  |  |  |  |  |
Natural Gas Basis Swaps | $ | — |  |  | $ | 1 |  |  | $ | — |  |  | $ | 1 |
Brent Crude Oil (Brent) Linked Gas Sales Contract | — |  |  | — |  |  | 116 |  |  | 116 |
Financial Liabilities: |  |  |  |  |  |  |
Natural Gas Swaps | — |  |  | 277 |  |  | — |  |  | 277 |
At December 31, 2024 |  |  |  |  |  |  |
Financial Assets: |  |  |  |  |  |  |
Natural Gas Basis Swaps | $ | — |  |  | $ | 1 |  |  | $ | — |  |  | $ | 1 |
Brent Linked Gas Sales Contract | — |  |  | — |  |  | 110 |  |  | 110 |
Financial Liabilities: |  |  |  |  |  |  |
Natural Gas Swaps | — |  |  | 117 |  |  | — |  |  | 117 |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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