Inventories (Tables)

6 Months Ended

Jun. 30, 2018

Inventories

Schedule of inventories

Inventories consisted of the following (in millions):

	June 30,		December 31,
	2018		2017
Raw materials	$	158.4	$	152.0
Work-in-process	203.0		183.1
Finished goods	87.7		96.6
Demonstration units	60.3		54.5
Inventories	$	509.4	$	486.2