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Asset Retirement Obligations (Tables) | 12 Months Ended
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Dec. 31, 2022
Asset Retirement Obligation [Abstract] |
Reconciliation of the company's asset retirement obligation | A reconciliation of the Company's liability, which the current portion is included in other accrued liabilities on the Consolidated Balance Sheets, for the years ended December 31 was as follows:
| 2022 |  | 2021 |
| (In thousands)
Balance at beginning of year | $ | 468,686 |  | $ | 446,919 |
Liabilities incurred | 5,972 |  | 12,454 |
Liabilities acquired | — |  | 1,805 |
Liabilities settled | (9,646) |  | (15,155) |
Accretion expense* | 23,188 |  | 21,214 |
Revisions in estimates | (77,692) |  | 1,449 |
Balance at end of year | $ | 410,508 |  | $ | 468,686 |
*Includes $21.8 million and $19.6 million in 2022 and 2021, respectively, recorded to regulatory assets.

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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