Inventories (Tables)

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Components of Inventories

	As of
	September 30, 2017			December 31, 2016
Raw materials	$	429.3		$	378.2
Work in progress		283.2			256.7
Finished products		227.0			240.0
Inventories	$	939.5		$	874.9
Inventory valuation reserve		(107.8	)		(101.5	)
Total inventories, net of reserve	$	831.7		$	773.4