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Asset Retirement Obligations (Tables) | 9 Months Ended
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Sep. 30, 2024
Asset Retirement Obligation Disclosure [Abstract] |
Summary of Changes in Asset Retirement Obligations | The following table presents the changes in Devon’s asset retirement obligations.
|  | Nine Months Ended September 30, |
|  | 2024 |  |  | 2023 |
Asset retirement obligations as of beginning of period |  | $ | 665 |  |  | $ | 529 |
Assumed Grayson Mill obligations |  |  | 75 |  |  |  | — |
Liabilities incurred |  |  | 21 |  |  |  | 104 |
Liabilities settled and divested |  |  | (25 | ) |  |  | (24 | )
Revision of estimated obligation |  |  | 35 |  |  |  | 27 |
Accretion expense on discounted obligation |  |  | 28 |  |  |  | 21 |
Asset retirement obligations as of end of period |  |  | 799 |  |  |  | 657 |
Less current portion |  |  | 34 |  |  |  | 16 |
Asset retirement obligations, long-term |  | $ | 765 |  |  | $ | 641 |

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- Definition Tabular disclosure of the carrying amount of a liability for asset retirement obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
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