Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Foreign Currency Translation Adjustments [Member]	Unrealized Derivative Gains (Losses) [Member]	Minimum Retirement Benefit Liability Adjustments [Member]	Total Accumulated Other Comprehensive (Loss) Earnings [Member]	Deferred Compensation [Member]	Retained Earnings [Member]	Treasury Stock at Cost [Member]	Treasury Stock Held for Deferred Compensaton [Member]
Balances at Sep. 30, 2022	$ 1,901,122	$ 106	$ 293,540	$ (86,494)	$ (6,215)	$ 146	$ (92,563)	$ 6,781	$ 2,727,233	$ (1,027,194)	$ (6,781)
Net earnings	29,606								29,606
Other comprehensive earnings (loss), net of tax	33,931			27,946	5,485	500	33,931
Cash dividends paid	(11,355)								(11,355)
Sales of treasury stock	1,024		161							863
Purchases of treasury stock	(26,369)									(26,369)
Common shares issued for benefit plans	160		83							77
Stock-based compensation	11,316		11,316
Purchases of stock by/ deferred compensation								70			(70)
Distribution of stock from deferred compensation								(876)			876
Balances at Dec. 31, 2022	1,939,435	106	305,100	(58,548)	(730)	646	(58,632)	5,975	2,745,484	(1,052,623)	(5,975)
Balances at Sep. 30, 2023	2,070,989	106	327,941	(67,393)	(9,719)	6,441	(70,671)	2,776	2,908,574	(1,094,961)	(2,776)
Net earnings	90,044								90,044
Other comprehensive earnings (loss), net of tax	21,287			21,688	(611)	210	21,287
Cash dividends paid	(13,209)								(13,209)
Sales of treasury stock	16,014		4,160							11,854
Stock-based compensation	4,937		4,937
Purchases of stock by/ deferred compensation								32			(32)
Distribution of stock from deferred compensation								241			(241)
Balances at Dec. 31, 2023	$ 2,190,062	$ 106	$ 337,038	$ (45,705)	$ (10,330)	$ 6,651	$ (49,384)	$ 3,049	$ 2,985,409	$ (1,083,107)	$ (3,049)