Inventories (Tables)

9 Months Ended

Mar. 31, 2017

Inventory, Net [Abstract]

Schedule of inventories

Inventories consisted of the following components as of March 31, 2017 and June 30, 2016:

($ in millions)	March 31, 2017		June 30, 2016
Raw materials and supplies	$	157.5	$	137.6
Work in process	374.0		298.9
Finished and purchased products	186.8		192.2
Total inventory	$	718.3	$	628.7