Inventories (Tables)

12 Months Ended

Dec. 31, 2022

Inventory Disclosure [Abstract]

Schedule of Inventory

The classes of inventory as of December 31 are summarized as follows ($ in millions):

	2022		2021
Finished goods	$	229.2	$	214.3
Work in process	23.9		22.0
Raw materials	103.4		88.3
Reserve for inventory obsolescence	(55.7)		(60.8)
Total	$	300.8	$	263.8