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Restructuring (Tables) | 12 Months Ended
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Dec. 31, 2022
Restructuring and Related Activities [Abstract] |
Summary of Activity Relating to Restructuring Plan Liabilities | The following table summarizes activity relating to restructuring plan liabilities (in millions of dollars):
|  | Year Ended December 31, |
|  | 2022 |  |  | 2021 |
Beginning balance |  | $ | — |  |  | $ | 1.4 |
Restructuring costs |  |  | 2.2 |  |  |  | — |
Costs paid or otherwise settled |  |  | (0.5 | ) |  |  | (0.6 | )
Other adjustments 1 |  |  | — |  |  |  | (0.8 | )
Ending balance |  | $ | 1.7 |  |  | $ | — |
1 In 2021, we revised our production forecasts, thereby reducing the estimated number of headcount reductions necessary under the 2020 Restructuring Plan as compared with our initial requirements. These reductions to accommodate the revised headcount requirements are included in Other adjustments with an offset to Restructuring costs (benefit) in our Statements of Consolidated (Loss) Income.

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- Definition Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI https://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI https://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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