Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Summary of Property, Plant and Equipment

A summary of gross property, plant and equipment at December 31 is presented in the following table:

($ in millions)	Expected useful lives (years)	2018		2017
Land		$	20.9	$	21.4
Buildings and improvements	5-50	569.1		539.2
Machinery and equipment	10-15	806.7		793.4
Molds and dies	4-7	115.8		114.5
Computer hardware and software	3-10	151.1		144.6
Construction in progress		89.1		132.7
		$	1,752.7	$	1,745.8