Condensed Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Condensed Consolidated Statements of Comprehensive Earnings
Net earnings	$ 48,861	$ 38,465	$ 158,744	$ 183,156
Other comprehensive earnings:
Foreign currency translation adjustments	8,255	8,057	16,590	5,855
Net loss on foreign currency transactions designated as hedges of net investments in foreign subsidiaries	(750)	(792)	(648)	(1,187)
Taxes on changes in foreign currency translation adjustments	476	(213)	(395)	(423)
Foreign currency translation and transactions adjustments, net of tax	7,981	7,052	15,547	4,245
Unrealized gain/(loss) on fair value adjustment of derivative instruments	8,402	(26,011)	(13,364)	7,993
Reclassification of net realized loss/(gain) on derivatives to earnings	7,204	(22,649)	7,481	(18,255)
Taxes on changes in derivative transactions	(328)	1,025	(125)	253
Derivative adjustments, net of tax	15,278	(47,635)	(6,008)	(10,009)
Amortization of pension and other postretirement plan:
Net prior service cost	248	240	746	721
Net loss	380	627	1,127	1,886
Foreign currency exchange rate changes on pension and other postretirement benefit plan liabilities	(363)	(101)	(1,607)	(378)
Taxes on changes in pension and other postretirement benefit plan liability adjustments, net of foreign currency exchange rate changes	(49)	(192)	23	(544)
Pension and other postretirement benefit plan adjustments, net of tax	216	574	289	1,685
Total comprehensive earnings	$ 72,336	$ (1,544)	$ 168,572	$ 179,077