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	149,716								149,716
Other comprehensive earnings (loss), net of tax	31,635			30,694	403	538	31,635
Cash dividends paid	(37,762)								(37,762)
Sales of treasury stock	28,612		2,860							25,752
Common shares issued for benefit plans	19,467		10,943							8,524
Purchases of treasury stock	(26,369)									(26,369)
Stock-based compensation	19,369		19,369
Purchases of stock by/ deferred compensation								146			(146)
Distribution of stock from deferred compensation								(4,110)			4,110
Balances at Jun. 30, 2023	2,085,790	106	326,712	(55,800)	(5,812)	684	(60,928)	2,817	2,839,187	(1,019,287)	(2,817)
Balances at Mar. 31, 2023	2,012,054	106	321,441	(49,932)	4,573	741	(44,618)	3,319	2,767,813	(1,032,688)	(3,319)
Net earnings	84,599								84,599
Other comprehensive earnings (loss), net of tax	(16,310)			(5,868)	(10,385)	(57)	(16,310)
Cash dividends paid	(13,225)								(13,225)
Sales of treasury stock	14,841		1,440							13,401
Stock-based compensation	3,831		3,831
Purchases of stock by/ deferred compensation								34			(34)
Distribution of stock from deferred compensation								(536)			536
Balances at Jun. 30, 2023	2,085,790	106	326,712	(55,800)	(5,812)	684	(60,928)	2,817	2,839,187	(1,019,287)	(2,817)
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	289,675								289,675
Other comprehensive earnings (loss), net of tax	5,843			4,792	1,207	(156)	5,843
Cash dividends paid	(43,457)								(43,457)
Sales of treasury stock	90,109		24,391							65,718
Common shares issued for benefit plans	22,937		13,966							8,971
Purchases of treasury stock	(304,811)									(304,811)
Stock-based compensation	27,926		27,926
Purchases of stock by/ deferred compensation								127			(127)
Distribution of stock from deferred compensation								126			(126)
Balances at Jun. 30, 2024	2,159,211	106	394,224	(62,601)	(8,512)	6,285	(64,828)	3,029	3,154,792	(1,325,083)	(3,029)
Balances at Mar. 31, 2024	2,329,413	106	374,278	(56,378)	(11,442)	6,419	(61,401)	3,032	3,067,847	(1,051,417)	(3,032)
Net earnings	102,075								102,075
Other comprehensive earnings (loss), net of tax	(3,427)			(6,223)	2,930	(134)	(3,427)
Cash dividends paid	(15,130)								(15,130)
Sales of treasury stock	42,018		11,923							30,095
Common shares issued for benefit plans	1,050									1,050
Purchases of treasury stock	(304,811)									(304,811)
Stock-based compensation	8,023		8,023
Purchases of stock by/ deferred compensation								48			(48)
Distribution of stock from deferred compensation								(51)			51
Balances at Jun. 30, 2024	$ 2,159,211	$ 106	$ 394,224	$ (62,601)	$ (8,512)	$ 6,285	$ (64,828)	$ 3,029	$ 3,154,792	$ (1,325,083)	$ (3,029)