Inventories (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Components of Inventories

	As of
	March 31, 2018			December 31, 2017
Raw materials	$	445.6		$	423.0
Work in progress		293.3			285.2
Finished products		232.8			258.0
Inventories	$	971.7		$	966.2
Inventory valuation reserve		(106.7	)		(107.1	)
Total inventories, net of reserve	$	865.0		$	859.1