Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 114,445	$ 63,504	$ 180,832	$ 138,539
Other comprehensive income, net of tax:
Hedge gain (loss) arising during the period, net of tax of $(2.1) million and $0.7 million in the second quarter of 2024 and 2023, respectively, and $1.7 million and $4.5 million in the first six months of 2024 and 2023, respectively	6,432	(1,999)	(5,079)	(13,484)
Foreign currency translation adjustment, net of tax of $0 for each period	(24,792)	8,747	9,882	68,776
Change in defined benefit pension items, net of tax of $0 for each period	216	(24)	(6)	(332)
Other comprehensive income (loss)	(18,144)	6,724	4,797	54,960
Comprehensive income	$ 96,301	$ 70,228	$ 185,629	$ 193,499