Inventories (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Inventories
Raw materials and supplies	$ 111.6	$ 114.1
Work in process	325.9	312.4
Finished and purchased products	221.7	215.5
Total inventory	659.2	642.0
Inventory LIFO reserve	222.4	279.8
Current cost of LIFO inventory	708.3	759.7
Decrease in cost of sales	$ 2.1	$ 0	$ 1.7