EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Earnings Per Share [Abstract]
Net income	$ 131,319	$ 89,411
Basic earnings per share
Weighted average shares of common stock outstanding-basic (in shares)	99,855	97,869
Basic earnings per common share (usd per share)	$ 1.32	$ 0.91
Diluted earnings per share
Weighted average shares of common stock outstanding-basic (in shares)	99,855	97,869
Incremental shares (in shares)	623	694
Weighted average shares of common stock outstanding-diluted (in shares)	100,478	98,563
Diluted (loss) earnings per common share (usd per share)	$ 1.31	$ 0.91