Inventories (Tables)

3 Months Ended

Mar. 31, 2022

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, 2022		December 31, 2021
Raw materials	$	167.4	$	153.8
Work in process	70.2		63.5
Finished goods	178.9		161.1
	$	416.5	$	378.4