Inventories (Tables)

6 Months Ended

Dec. 31, 2017

Inventory, Net [Abstract]

Schedule of inventories

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

($ in millions)	December 31, 2017		June 30, 2017
Raw materials and supplies	$	186.1	$	152.8
Work in process	395.5		365.6
Finished and purchased products	190.2		172.0
Total inventory	$	771.8	$	690.4