Inventories

3 Months Ended

Sep. 30, 2025

Inventory, Net [Abstract]

Inventories

Inventories

Inventories consisted of the following components as of September 30, 2025 and June 30, 2025:

($ in millions)	September 30, 2025		June 30, 2025
Raw materials and supplies	$	191.7	$	199.7
Work in process	450.4		454.9
Finished and purchased products	136.4		139.2
Total inventories	$	778.5	$	793.8

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 September 30, 2025 and June 30, 2025, $147.9 million and $145.2 million of inventory, respectively, was accounted for using a method other than the LIFO inventory costing method.