Earnings Per Share (Schedule Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2022	Dec. 31, 2021
Numerator:
Net income	$ 224,914	$ 210,478	$ 201,751	$ 203,613	$ 435,392	$ 405,364
Denominator:
Basic weighted-average common shares outstanding (shares)	146,704		145,990		146,568	145,835
Effect of dilutive securities:
Stock options and restricted stock units (shares)	701		1,050		799	1,209
Diluted weighted average shares (shares)	147,405		147,040		147,367	147,044
Basic earnings per share (dollars per share)	$ 1.53		$ 1.38		$ 2.97	$ 2.78
Diluted earnings per share (dollars per share)	$ 1.53		$ 1.37		$ 2.95	$ 2.76