Condensed Consolidated Statements of Earnings - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Net sales	$ 915,446	$ 847,688	$ 2,571,800	$ 2,469,761
Costs and expenses:
Cost of goods sold	666,287	617,702	1,892,908	1,801,037
Selling, general and administrative expenses	88,703	73,812	242,241	229,770
Research and development costs	41,088	38,728	108,525	105,987
Interest expense	11,234	11,516	35,464	34,482
Interest income	(838)	(1,728)	(3,236)	(4,494)
Other (income) expense, net	(17,864)	(14,438)	(65,755)	(49,461)
Total costs and expenses	788,610	725,592	2,210,147	2,117,321
Earnings before income taxes	126,836	122,096	361,653	352,440
Income tax expense	18,388	20,021	57,165	62,765
Net earnings	$ 108,448	$ 102,075	$ 304,488	$ 289,675
Earnings per share:
Basic earnings per share	$ 1.82	$ 1.69	$ 5.12	$ 4.8
Diluted earnings per share	$ 1.76	$ 1.63	$ 4.96	$ 4.65
Weighted Average Common Shares Outstanding:
Basic	59,680	60,425	59,442	60,290
Diluted	61,488	62,522	61,374	62,295