Inventories (Tables)

6 Months Ended

Jun. 30, 2019

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consist of the following: 

	June 30, 2019			December 31, 2018
	(in millions)
Raw materials and work-in-progress	$	390.7		$	375.1
Finished goods	91.0			99.0
Gross inventories	481.7			474.1
Inventory valuation reserves	(21.8		)	(14.4		)
Inventories, net	$	459.9		$	459.7