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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
December 31 (dollars in millions)20242023
Land$30.0 $31.0 
Buildings408.5 378.6 
Equipment911.8 865.9 
Software145.6 143.1 
1,495.9 1,418.6 
Accumulated depreciation and amortization(867.2)(821.1)
Net property, plant, and equipment$628.7 $597.5