Inventories (Tables)

3 Months Ended

Mar. 31, 2023

Inventory Disclosure [Abstract]

Schedule of Inventories

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

($ in millions)	March 31, 2023		December 31, 2022
Raw materials	$	181.0	$	170.7
Work in process	95.9		79.0
Finished goods	170.1		165.1
	$	447.0	$	414.8