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Property, Plant and Equipment, Net
 12 Months Ended
Dec. 31, 2024
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment, Net

8. Property, Plant and Equipment, Net

 

The components of net property, plant and equipment were as follows:

 

 

 

December 31

 

(in millions)

 

2024

 

 

2023

 

Land and improvements

 

$

17.4

 

 

$

20.9

 

Buildings and improvements to leaseholds

 

 

115.4

 

 

 

130.7

 

Machinery and equipment

 

 

365.2

 

 

 

442.9

 

Construction in progress

 

 

7.5

 

 

 

5.1

 

 

 

505.5

 

 

 

599.6

 

Less: accumulated depreciation

 

 

(368.0

)

 

 

(429.5

)

Net property, plant and equipment (1)

 

$

137.5

 

 

$

170.1

 

 

(1)
Net property, plant and equipment as of December 31, 2024 and 2023 included $29.4 million and $37.9 million of computer software assets, respectively, which are classified within machinery and equipment and construction in progress. Depreciation expense for software was $13.8 million, $14.1 million and $13.9 million for the years ended December 31, 2024, 2023 and 2022, respectively.