Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 376,333	$ 245,540	$ 313,081
Other comprehensive income (loss), net of tax:
Hedge gain (loss) arising during the period, net of tax of $5.3 million, $2.5 million, and $(5.8) million in 2024, 2023, and 2022, respectively	(16,315)	(7,516)	17,556
Foreign currency translation adjustment, net of tax of $0 for each period	36,465	45,692	(92,768)
Change in pension benefit, net of tax of $1.7 million, $1.3 million, and $(7.1) million in 2024, 2023, and 2022, respectively	(3,791)	(2,798)	17,618
Other comprehensive income (loss)	16,359	35,378	(57,594)
Comprehensive income	$ 392,692	$ 280,918	$ 255,487