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Inventories (Tables)
12 Months Ended
Dec. 31, 2020
Inventories  
Schedule of inventories

Inventories consisted of the following (in millions):

    

2020

    

2019

Raw materials

$

198.8

$

188.8

Work-in-process

245.7

206.4

Finished goods

152.1

104.5

Demonstration units

95.7

77.5

Inventories

$

692.3

$

577.2