Other Income, Net (Other Income, Net) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013 building	Jun. 30, 2012 building
Other Income, Net [Abstract]
Interest income on corporate funds	$ (56.2)	$ (64.5)	$ (85.2)
Realized gains on available-for-sale securities	(20.4)	(32.1)	(32.1)
Realized losses on available-for-sale securities	3.9	3.5	7.7
Impairment Losses on Available-for-sale Securities	0	0	5.8
Impairment losses on assets held for sale	0	0	2.2
Gain on sale of buildings	0	(2.2)	0
Gain on sale of assets	0	0	(66.0)
Other, net	(0.2)	(0.9)	(3.2)
Other income, net	(72.9)	(96.2)	(170.8)
Number of buildings sold		2	2
Carrying value net of selling costs			$ 6.9