Condensed Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Condensed Consolidated Statements of Comprehensive Earnings
Net earnings	$ 35,511	$ 47,906	$ 65,117	$ 78,211
Other comprehensive earnings:
Foreign currency translation adjustments	8,495	(4,621)	38,722	(7,059)
Net (loss) gain on foreign currency transactions designated as hedges of net investments in foreign subsidiaries	(807)	673	(4,432)	1,744
Taxes on changes in foreign currency translation adjustments	928	(463)	2,272	(1,449)
Foreign currency translation and transactions adjustments, net of tax	8,616	(4,411)	36,562	(6,764)
Unrealized (loss) gain on fair value adjustment of derivative instruments	(2,096)	12,411	(34,684)	24,780
Reclassification of net realized loss (gain) on derivatives to earnings	7,620	(6,256)	45,806	(16,331)
Taxes on changes in derivative transactions	(221)	(215)	(334)	(295)
Derivative adjustments, net of tax	5,303	5,940	10,788	8,154
Amortization of pension and other postretirement plan:
Net prior service cost	181	251	360	502
Net (gain) loss	(204)	187	(403)	374
Foreign currency exchange rate changes on pension and other postretirement benefit plan liabilities	70	592	511	622
Taxes on changes in pension and other postretirement benefit plan liability adjustments, net of foreign currency exchange rate changes	48	(292)	127	(406)
Pension and other postretirement benefit plan adjustments, net of tax	95	738	595	1,092
Total comprehensive earnings	$ 49,525	$ 50,173	$ 113,062	$ 80,693