Inventories (Tables)

6 Months Ended

Jun. 30, 2023

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories are valued at the lower of cost (on a first-in, first-out basis) or net realizable value. Inventory balances were as follows:

($ in millions)	June 30, 2023		December 31, 2022
Raw materials	$	185.3	$	170.7
Work in process	93.8		79.0
Finished goods	170.3		165.1
	$	449.4	$	414.8