Inventories (Tables)

6 Months Ended

Dec. 31, 2018

Inventory, Net [Abstract]

Schedule of inventories

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

($ in millions)	December 31, 2018		June 30, 2018
Raw materials and supplies	$	177.3	$	157.5
Work in process	465.0		372.5
Finished and purchased products	201.9		159.2
Total inventory	$	844.2	$	689.2