Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, plant and equipment (and related depreciable lives) consisted of the following ($ in millions):

	December 31,
	2021		2020
Land and improvements	$	31.6	$	13.6
Buildings and improvements (20 to 40 years or remaining life of relevant lease)	194.5		144.0
Machinery and equipment (5 to 20 years)	739.8		524.4
Construction in progress	32.6		23.1
Gross property, plant and equipment	998.5		705.1
Less: Accumulated depreciation	534.6		366.1
Property, plant and equipment, net	$	463.9	$	339.0