Inventories (Tables)

9 Months Ended

Mar. 31, 2018

Inventory, Net [Abstract]

Schedule of inventories

Inventories consisted of the following components as of March 31, 2018 and June 30, 2017:

($ in millions)	March 31, 2018		June 30, 2017
Raw materials and supplies	$	168.7	$	152.8
Work in process	379.4		365.6
Finished and purchased products	184.5		172.0
Total inventory	$	732.6	$	690.4