Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Treasury Stock at Cost [Member]	Treasury Stock Held for Deferred Compensation [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]
Balances at Sep. 30, 2019	$ 1,726,741	$ 106	$ (602,098)	$ (9,382)	$ 207,120	$ (53,235)	$ (4,955)	$ (45,116)	$ (103,306)	$ 9,382	$ 2,224,919
Balance, Common Stock, shares at Sep. 30, 2019		72,960,000
Balance, Treasury Stock, shares at Sep. 30, 2019			(11,040,000)
Balance, Treasury stock held for deferred compensation, shares at Sep. 30, 2019				(211,000)
Cumulative effect from adoption (Accounting Standards Update 2014-09) at Sep. 30, 2019	255										255
Net earnings	240,395										240,395
Other comprehensive earnings (loss), net of tax	13,512					12,544	(15,502)	16,470	13,512
Cash dividends paid	(37,664)										(37,664)
Purchases of treasury stock	(13,346)		$ (13,346)
Purchases of treasury stock, shares			(124,000)
Sales of treasury stock	25,134		$ 32,640		(7,506)
Sales of treasury stock, shares			763,000
Common shares issued from treasury stock for benefit plans	14,748		$ 5,328		9,420
Common shares issued from treasury stock for benefit plans, shares			124,000
Stock-based compensation	22,902				22,902
Purchases and transfers of stock by/to deferred compensation plan				$ (681)						681
Purchases and transfer of stock by/to deferred compensation plan, shares				(6,000)
Distribution of stock from deferred compensation plan				$ 841						(841)
Distribution of stock from deferred compensation plan, shares				18,000
Balances at Sep. 30, 2020	1,992,677	$ 106	$ (577,476)	$ (9,222)	231,936	(40,691)	(20,457)	(28,646)	(89,794)	9,222	2,427,905
Balance, Common Stock, shares at Sep. 30, 2020		72,960,000
Balance, Treasury Stock, shares at Sep. 30, 2020			(10,277,000)
Balance, Treasury stock held for deferred compensation, shares at Sep. 30, 2020				(199,000)
Net earnings	208,649										208,649
Other comprehensive earnings (loss), net of tax	24,175					7,787	(5,140)	21,528	24,175
Cash dividends paid	(36,041)										(36,041)
Purchases of treasury stock	(45,860)		$ (45,860)
Purchases of treasury stock, shares			(404,000)
Sales of treasury stock	34,806		$ 36,024		(1,218)
Sales of treasury stock, shares			851,000
Common shares issued from treasury stock for benefit plans	14,900		$ 5,358		9,542
Common shares issued from treasury stock for benefit plans, shares			128,000
Stock-based compensation	21,475				21,475
Purchases and transfers of stock by/to deferred compensation plan				$ (393)						393
Purchases and transfer of stock by/to deferred compensation plan, shares				(3,000)
Distribution of stock from deferred compensation plan				$ 1,666						(1,666)
Distribution of stock from deferred compensation plan, shares				35,000
Balances at Sep. 30, 2021	$ 2,214,781	$ 106	$ (581,954)	$ (7,949)	261,735	(32,904)	(25,597)	(7,118)	(65,619)	7,949	2,600,513
Balance, Common Stock, shares at Sep. 30, 2021	72,960,000	72,960,000
Balance, Treasury Stock, shares at Sep. 30, 2021	(9,702,000)		(9,702,000)
Balance, Treasury stock held for deferred compensation, shares at Sep. 30, 2021	(167,000)			(167,000)
Net earnings	$ 171,698										171,698
Other comprehensive earnings (loss), net of tax	(26,944)					(53,590)	19,382	7,264	(26,944)
Cash dividends paid	(44,978)										(44,978)
Purchases of treasury stock	(472,784)		$ (472,784)
Purchases of treasury stock, shares			(4,123,000)
Sales of treasury stock	22,108		$ 20,977		1,131
Sales of treasury stock, shares			468,000
Common shares issued from treasury stock for benefit plans	17,132		$ 6,567		10,565
Common shares issued from treasury stock for benefit plans, shares			150,000
Stock-based compensation	20,109				20,109
Purchases and transfers of stock by/to deferred compensation plan				$ (252)						252
Purchases and transfer of stock by/to deferred compensation plan, shares				(3,000)
Distribution of stock from deferred compensation plan				$ 1,420						(1,420)
Distribution of stock from deferred compensation plan, shares				31,000
Balances at Sep. 30, 2022	$ 1,901,122	$ 106	$ (1,027,194)	$ (6,781)	$ 293,540	$ (86,494)	$ (6,215)	$ 146	$ (92,563)	$ 6,781	$ 2,727,233
Balance, Common Stock, shares at Sep. 30, 2022	72,960,000	72,960,000
Balance, Treasury Stock, shares at Sep. 30, 2022	(13,207,000)		(13,207,000)
Balance, Treasury stock held for deferred compensation, shares at Sep. 30, 2022	(139,000)			(139,000)