Condensed Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Condensed Consolidated Statements of Comprehensive Earnings
Net earnings	$ 97,556	$ 35,511	$ 187,600	$ 65,117
Other comprehensive earnings:
Foreign currency translation adjustments	(11,759)	8,495	12,082	38,722
Net gain (loss) on foreign currency transactions designated as hedges of net investments in foreign subsidiaries	978	(807)	(888)	(4,432)
Taxes on changes in foreign currency translation adjustments	108	928	(179)	2,272
Foreign currency translation and transactions adjustments, net of tax	(10,673)	8,616	11,015	36,562
Unrealized gain (loss) on fair value adjustment of derivative instruments	7,349	(2,096)	(11,161)	(34,684)
Reclassification of net realized gain loss on derivatives to earnings	(8,875)	7,620	9,024	45,806
Taxes on changes in derivative transactions	414	(221)	414	(334)
Derivative adjustments, net of tax	(1,112)	5,303	(1,723)	10,788
Amortization of pension and other postretirement plan:
Net prior service cost	180	181	360	360
Net (gain)	(254)	(204)	(504)	(403)
Foreign currency exchange rate changes on pension and other postretirement benefit plan liabilities	(243)	70	79	511
Taxes on changes in pension and other postretirement benefit plan liability adjustments, net of foreign currency exchange rate changes	85	48	43	127
Pension and other postretirement benefit plan adjustments, net of tax	(232)	95	(22)	595
Total comprehensive earnings	$ 85,539	$ 49,525	$ 196,870	$ 113,062