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, 2023	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net income	$ 897,556	$ 779,437	$ 474,505
Denominator:
Basic weighted-average common shares outstanding (in shares)	146,765	146,066	145,313
Effect of dilutive securities:
Stock options and restricted stock units (in shares)	690	977	1,138
Diluted weighted average shares (in shares)	147,455	147,043	146,451
Basic earnings per share (in dollars per share)	$ 6.12	$ 5.34	$ 3.27
Diluted earnings per share (in dollars per share)	$ 6.09	$ 5.30	$ 3.24