Earnings Per Share (Schedule Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Numerator:
Net income	$ 315,588	$ 342,284	$ 352,409
Denominator:
Basic weighted-average common shares outstanding	142,764	141,360	140,242
Effect of dilutive securities:
Stock options and restricted stock units	1,223	1,093	1,427
Diluted weighted average shares	143,987	142,453	141,669
Basic earnings per share	$ 2.21	$ 2.42	$ 2.51
Diluted earnings per share	$ 2.19	$ 2.40	$ 2.49