Inventories (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Summary of Inventories

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

	March 31, 2018		December 31, 2017
Parts and work-in-process	$	132.0	$	128.7
Finished goods	99.2		114.4
Total inventories	$	231.2	$	243.1