Condensed Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Condensed Consolidated Statements of Comprehensive Earnings
Net earnings	$ 108,949	$ 97,556	$ 196,040	$ 187,600
Other comprehensive earnings:
Foreign currency translation adjustments	19,562	(11,759)	(17,322)	12,082
Net gain (loss) on foreign currency transactions designated as hedges of net investments in foreign subsidiaries	(1,712)	978	1,351	(888)
Taxes on changes in foreign currency translation adjustments	12	108	448	(179)
Foreign currency translation and hedge transactions adjustments, net of tax	17,862	(10,673)	(15,523)	11,015
Unrealized (loss) gain on fair value adjustment of derivative instruments	(11,402)	7,349	8,966	(11,161)
Reclassification of net realized losses (gain) on derivatives to earnings	16,560	(8,875)	(11,123)	9,024
Taxes on changes in derivative transactions		414		414
Derivative adjustments, net of tax	5,158	(1,112)	(2,157)	(1,723)
Amortization of pension and other postretirement plan:
Net prior service cost	195	180	392	360
Net (gain)	(167)	(254)	(334)	(504)
Foreign currency exchange rate changes on pension and other postretirement benefit plan liabilities	202	(243)	(124)	79
Taxes on changes in pension and other postretirement benefit plan liability adjustments, net of foreign currency exchange rate changes	(19)	85	(34)	43
Pension and other postretirement benefit plan adjustments, net of tax	211	(232)	(100)	(22)
Total comprehensive earnings	$ 132,180	$ 85,539	$ 178,260	$ 196,870