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, 2024	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2024	Dec. 31, 2023
Numerator:
Net income	$ 344,622	$ 311,355	$ 208,800	$ 219,422	$ 655,977	$ 428,222
Denominator:
Basic weighted-average common shares outstanding	146,810		147,132		146,835	147,104
Effect of dilutive securities:
Stock options and restricted stock units	671		413		685	468
Diluted weighted average shares	147,481		147,545		147,520	147,572
Basic earnings per share (in dollars per share)	$ 2.35		$ 1.42		$ 4.47	$ 2.91
Diluted earnings per share (in dollars per share)	$ 2.34		$ 1.42		$ 4.45	$ 2.90