Inventories

9 Months Ended

Mar. 31, 2025

Inventory, Net [Abstract]

Inventories

Inventories

Inventories consisted of the following components as of March 31, 2025 and June 30, 2024:

($ in millions)	March 31, 2025		June 30, 2024
Raw materials and supplies	$	199.6	$	164.0
Work in process	483.6		430.5
Finished and purchased products	141.8		140.9
Total inventories	$	825.0	$	735.4

Inventories are valued at the lower of cost or market. Cost for inventories is principally determined using the last-in, first-out ("LIFO") inventory costing method. The Company values other inventory at the lower of cost or net realizable value, determined by the first-in, first-out and average cost methods. As of March 31, 2025 and June 30, 2024, $142.3 million and $152.2 million of inventory, respectively, was accounted for using a method other than the LIFO inventory costing method.