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Asset Retirement Obligations (Tables) | 12 Months Ended
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Dec. 31, 2022
Asset Retirement Obligation [Abstract] |
Reconciliation of changes in the asset retirement obligation | The following table provides a reconciliation of changes in the asset retirement obligation from operations during each period:
| Years ended December 31,
| 2022 |  | 2021
Asset retirement obligation at beginning of year | $ | 12.3 |  |  | $ | 11.4 |
Liabilities settled | — |  |  | (0.1) |
Accretion expense(1) | 0.9 |  |  | 0.9 |
Revisions in estimated cash flows | 0.6 |  |  | 0.1 |
Asset retirement obligation at end of year(2) | $ | 13.8 |  |  | $ | 12.3 |
(1)Included in cost of products sold and operating expenses on the Consolidated Statements of Income. (2)The current portion of asset retirement obligation liabilities, which totaled $0.4 million and $0.7 million at December 31, 2022 and December 31, 2021, respectively, is classified in accrued liabilities on the Consolidated Balance Sheets.

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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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