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Property, Plant and Equipment | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment |
Property, Plant and Equipment | (8) Property, Plant and Equipment ​ Property, plant and equipment consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ |  | 2023 |  | 2022
​ | ​ | (in millions)
Land | ​ | $ | 15.2 | ​ | $ | 11.1
Buildings and improvements | ​ |  | 212.1 | ​ |  | 183.5
Machinery and equipment | ​ |  | 435.5 | ​ |  | 387.4
Construction in progress | ​ |  | 14.4 | ​ |  | 13.6
Property, plant and equipment, at cost | ​ |  | 677.2 | ​ |  | 595.6
Accumulated depreciation | ​ |  | (429.0) | ​ |  | (398.8)
Property, plant, and equipment, net | ​ | $ | 248.2 | ​ | $ | 196.8
​

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-7 + Details
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