Inventories (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Inventories
Raw materials and supplies	$ 122.3	$ 111.6
Work in process	393.9	325.9
Finished and purchased products	183.0	221.7
Total inventory	699.2	659.2
Inventory LIFO reserve	195.7	222.4
Current cost of LIFO inventory	733.7	708.3
Decrease in cost of sales	$ 0	$ 2.1	$ 0