Inventories (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Inventory, Net [Abstract]
Raw materials and supplies	$ 121.7	$ 122.3
Work in process	346.1	393.9
Finished and purchased products	188.0	183.0
Total inventory	655.8	699.2
Inventory LIFO reserve	196.6	195.7
Current cost of LIFO inventory	697.5	733.7
Increase (decrease) in cost of sales	$ 1.6	$ 0.0	$ (2.1)