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Inventories (Tables)
9 Months Ended
Sep. 30, 2019
Inventories  
Schedule of inventories

Inventories consisted of the following (dollars in millions):

September 30, 

    

December 31, 

    

2019

    

2018

Raw materials

$

194.6

$

164.5

Work-in-process

 

216.3

 

182.4

Finished goods

 

101.8

 

94.8

Demonstration units

 

74.0

 

67.9

Inventories

$

586.7

$

509.6