Sale Of Intellectual Property (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Sale Of Intellectual Property [Abstract]
Sale of intellectual property	$ 0	$ 16.2	$ 0.3	$ 16.2