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Property, Plant and Equipment
 12 Months Ended
Dec. 31, 2024
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment PROPERTY, PLANT AND EQUIPMENT
The classes of property, plant and equipment as of December 31 are summarized as follows ($ in millions):
20242023
Land and improvements$10.0 $10.0 
Buildings and improvements166.0 157.4 
Machinery, equipment and other assets431.2 417.9 
Construction in progress33.9 65.3 
Gross property, plant and equipment641.1 650.6 
Less: accumulated depreciation(364.1)(341.0)
Property, plant and equipment, net$277.0 $309.6 
For the year ended December 31, 2024, the Company recognized fixed asset impairment charges of $13.0 million for certain assets included in machinery, equipment and other assets and construction in progress related to its Specialty Products & Technologies segment. The fixed asset impairment charge is recorded as a component of cost of sales within the Consolidated Statement of Operations. There were no fixed asset impairment charges for the year ended December 31, 2023 and 2022.