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Asset Retirement Obligations | 6 Months Ended
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Jun. 30, 2025
Asset Retirement Obligation Disclosure [Abstract] |
Asset Retirement Obligations | Asset Retirement Obligations Activity related to the Company’s asset retirement obligations is as follows:
|  | Six Months Ended June 30,
(In millions) |  | 2025 |  | 2024
Balance at beginning of period |  | $ | 302 |  |  | $ | 289 |
Liabilities incurred |  | 5 |  |  | 4
Liabilities settled |  | — |  |  | (1) |
Liabilities assumed in acquisitions |  | 19 |  |  | — |
Accretion expense |  | 7 |  |  | 6
Balance at end of period |  | 333 |  |  | 298 |
Less: current asset retirement obligations |  | (17) |  |  | (12) |
Noncurrent asset retirement obligations |  | $ | 316 |  |  | $ | 286 |

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- Definition The entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/410-20/tableOfContent Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 20 -Topic 410 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-2 + Details
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