Consolidated Statements of Earnings - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Net sales	$ 2,382,790	$ 2,245,832	$ 2,495,665
Costs and expenses:
Cost of goods sold	1,857,485	1,694,774	1,855,422
Selling, general and administrative expenses	203,005	186,866	217,710
Research and development costs	119,782	117,091	133,134
Impairment of assets sold			37,902
Restructuring activities	(3,420)	5,008	22,216
Gain on cross-currency interest rate swaps, net			(30,481)
Interest expense	34,545	34,282	35,811
Interest income	(1,814)	(1,495)	(1,764)
Other (income) expense, net	(26,691)	(36,493)	(56,166)
Total costs and expenses	2,182,892	2,000,033	2,213,784
Earnings before income taxes	199,898	245,799	281,881
Income tax expense	28,200	37,150	41,486
Net earnings	$ 171,698	$ 208,649	$ 240,395
Earnings per share:
Basic earnings per share	$ 2.79	$ 3.30	$ 3.86
Diluted earnings per share	$ 2.71	$ 3.18	$ 3.74
Weighted Average Common Shares Outstanding:
Basic	61,517	63,287	62,267
Diluted	63,254	65,555	64,209