Inventories (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories consisted of the following as of the dates presented below:

	June 30, 2018		December 31, 2017
Parts and work-in-process	$	137.9	$	128.7
Finished goods	94.0		114.4
Total inventories	$	231.9	$	243.1