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Inventories (Tables)
3 Months Ended
Mar. 31, 2020
Inventories  
Schedule of inventories

Inventories consisted of the following (dollars in millions):

March 31, 

    

December 31, 

    

2020

    

2019

Raw materials

$

194.9

$

188.8

Work-in-process

 

236.6

 

206.4

Finished goods

 

115.0

 

104.5

Demonstration units

 

79.0

 

77.5

Inventories

$

625.5

$

577.2