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Asset Retirement Obligations (Tables) | 9 Months Ended
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Sep. 30, 2024
Asset Retirement Obligation Disclosure [Abstract] |
Schedule of Change in Asset Retirement Obligation | The following table indicates the changes to the company’s before-tax asset retirement obligations for the nine months ended September 30, 2024 and 2023:
| 2024 |  | 2023
| (Millions of dollars)
Balance at January 1 | $ | 13,833 |  |  | $ | 12,701 |
Liabilities assumed in the PDC Energy, Inc. acquisition | — |  |  | 220 |
Liabilities incurred | 38 |  |  | 140 |
Liabilities settled | (1,803) |  |  | (1,124) |
Accretion expense | 441 |  |  | 457 |
Revisions in estimated cash flows | (63) |  |  | 316 |
Balance at September 30 | $ | 12,446 |  |  | $ | 12,710 |

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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
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