Inventories (Tables)

3 Months Ended

Sep. 30, 2018

Inventory, Net [Abstract]

Schedule of inventories

Inventories consisted of the following components as of September 30, 2018 and June 30, 2018:

($ in millions)	September 30, 2018		June 30, 2018
Raw materials and supplies	$	170.2	$	157.5
Work in process	414.4		372.5
Finished and purchased products	155.9		159.2
Total inventory	$	740.5	$	689.2