Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 162,644	$ 114,445	$ 244,876	$ 180,832
Other comprehensive income (loss), net of tax:
Hedge gain (loss) arising during the period, net of tax of $4.9 million and $(2.1) million in the second quarter of 2025 and 2024, respectively, and $(3.3) million and $1.7 million in the first six months of 2025 and 2024, respectively	(15,014)	6,432	10,226	(5,079)
Foreign currency translation adjustment, net of tax of $0 for each period	36,202	(24,792)	(27,795)	9,882
Change in pension benefit, net of tax of $0.0 million and $0.0 million in the second quarter of 2025 and 2024, respectively, and $(0.1) million and $0.0 million in the first six months of 2025 and 2024, respectively	(313)	216	531	(6)
Other comprehensive income (loss)	20,875	(18,144)	(17,038)	4,797
Comprehensive income	$ 183,519	$ 96,301	$ 227,838	$ 185,629