Summary Of Significant Accounting Policies (Schedule Of Calculation Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Summary Of Significant Accounting Policies [Abstract]
Net income, used in calculating diluted earnings per share	$ 71,265	$ 50,518
Basic weighted-average common shares outstanding	142,651	150,366
Effect of dilutive securities, stock options and restricted stock units	3,404	3,685
Diluted weighted average shares	146,055	154,051
Basic earnings per share	$ 0.50	$ 0.34
Diluted earnings per share	$ 0.49	$ 0.33