Stock And Employee Benefit Plans (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Recognized tax benefit related to stock compensation expense	$ 3.8	$ 3.5	$ 2.3
Unearned stock-based compensation expense related to unvested awards	18.0
Recognition term of unearned stock-based compensation expense, in years	2 years 9 months
Employer contributions to plan	$ 6.1	$ 5.2	$ 4.4
2001 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	2,000,000
2010, 2007, and 2005 Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	6,000,000
ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	1,800,000