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Property, Plant, and Equipment, Net
12 Months Ended
Dec. 31, 2020
Property Plant And Equipment [Abstract]  
Property, Plant, and Equipment, Net

8. Property, Plant, and Equipment, Net

Property, plant, and equipment, net consist of the following:

 

 

 

December 31,

 

 

 

2020

 

 

2019

 

 

 

(Dollars in millions)

 

Land

 

$

7.5

 

 

$

7.5

 

Software

 

 

306.3

 

 

 

265.0

 

Machinery and equipment

 

 

120.2

 

 

 

116.1

 

Buildings and improvements

 

 

48.9

 

 

 

59.2

 

Total property, plant, and equipment

 

 

482.9

 

 

 

447.8

 

Accumulated depreciation

 

 

(346.5

)

 

 

(319.5

)

Property, plant, and equipment, net

 

$

136.4

 

 

$

128.3

 

 

Depreciation expense related to property, plant, and equipment, net was $48.0 million, $40.9 million, and $38.1 million for the years ended December 31, 2020, 2019, and 2018, respectively.