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Accounting for Asset Retirement Obligations (Tables) | 12 Months Ended
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Dec. 31, 2024
Accounting for Asset Retirement Obligations [Abstract] |
Reconciliation of Asset Retirement Obligations | The following is a reconciliation of asset retirement obligations as of December 31, 2024 and 2023:
|  | December 31, |
(millions of dollars) |  | 2024 |  |  | 2023 |
Asset retirement obligation, beginning of period |  | $ | 20.8 |  |  | $ | 23.8 |
Accretion expense |  |  | 1.6 |  |  |  | 1.1 |
Other |  |  | 6.5 |  |  |  | (3.8 | )
Payments |  |  | (0.8 | ) |  |  | (0.1 | )
Foreign currency translation |  |  | (0.5 | ) |  |  | (0.2 | )
Asset retirement obligation, end of period |  | $ | 27.6 |  |  | $ | 20.8 |

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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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