CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 131,319	$ 89,411
Other comprehensive income
Reclassifications of losses to net income on derivatives designated as hedging instruments, net of tax of $(79) and $(79), respectively	263	264
Adjustment to postemployment benefit obligation, net of tax of $58 and $(40), respectively	(195)	131
Other comprehensive income	68	395
Comprehensive income	$ 131,387	$ 89,806