Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Treasury Stock at Cost [Member]	Treasury Stock Held for Deferred Compensaton [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, 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	158,744										158,744
Other comprehensive earnings (loss), net of tax	9,828					15,547	(6,008)	289	9,828
Cash dividends paid	(25,734)										(25,734)
Sales of treasury stock	32,219		$ 33,326		(1,107)
Sales of treasury stock, shares			788,000
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	19,053				19,053
Purchases/transfers of stock by/to deferred compensation plan				$ (357)						357
Purchases and transfer of stock by/to deferred compensation plan, shares				(3,000)
Distribution of stock from deferred compensation plan				$ 1,429						(1,429)
Distribution of stock from deferred compensation plan, shares				29,000
Balances at Jun. 30, 2021	2,201,687	$ 106	$ (538,792)	$ (8,150)	259,424	(25,144)	(26,465)	(28,357)	(79,966)	8,150	2,560,915
Balance, Common Stock, shares at Jun. 30, 2021		72,960,000
Balance, Treasury Stock, shares at Jun. 30, 2021			(9,361,000)
Balance, Treasury stock held for deferred compensation, shares at Jun. 30, 2021				(173,000)
Balances at Mar. 31, 2021	2,133,301	$ 106	$ (542,754)	$ (9,103)	257,006	(33,125)	(41,743)	(28,573)	(103,441)	9,103	2,522,384
Balance, Common Stock, shares at Mar. 31, 2021		72,960,000
Balance, Treasury Stock, shares at Mar. 31, 2021			(9,454,000)
Balance, Treasury stock held for deferred compensation, shares at Mar. 31, 2021				(192,000)
Net earnings	48,861										48,861
Other comprehensive earnings (loss), net of tax	23,475					7,981	15,278	216	23,475
Cash dividends paid	(10,330)										(10,330)
Sales of treasury stock	3,765		$ 3,962		(197)
Sales of treasury stock, shares			93,000
Stock-based compensation	2,615				2,615
Purchases/transfers of stock by/to deferred compensation plan				$ (40)						40
Distribution of stock from deferred compensation plan				$ 993						(993)
Distribution of stock from deferred compensation plan, shares				19,000
Balances at Jun. 30, 2021	2,201,687	$ 106	$ (538,792)	$ (8,150)	259,424	(25,144)	(26,465)	(28,357)	(79,966)	8,150	2,560,915
Balance, Common Stock, shares at Jun. 30, 2021		72,960,000
Balance, Treasury Stock, shares at Jun. 30, 2021			(9,361,000)
Balance, Treasury stock held for deferred compensation, shares at Jun. 30, 2021				(173,000)
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	$ 117,657										117,657
Other comprehensive earnings (loss), net of tax	(16,123)					(33,949)	15,139	2,687	(16,123)
Cash dividends paid	(33,572)										(33,572)
Sales of treasury stock	20,283		$ 18,855		1,428
Sales of treasury stock, shares			423,000
Common shares issued from treasury stock for benefit plans	17,168		$ 6,567		10,601
Common shares issued from treasury stock for benefit plans, shares			150,000
Purchases of treasury stock	(427,717)		$ (427,717)
Purchases of treasury stock, shares			(3,674,000)
Stock-based compensation	17,136				17,136
Purchases/transfers of stock by/to deferred compensation plan				$ (183)						183
Purchases and transfer of stock by/to deferred compensation plan, shares				(2,000)
Distribution of stock from deferred compensation plan				$ 1,371						(1,371)
Distribution of stock from deferred compensation plan, shares				29,000
Balances at Jun. 30, 2022	$ 1,909,613	$ 106	$ (984,249)	$ (6,761)	290,900	(66,853)	(10,458)	(4,431)	(81,742)	6,761	2,684,598
Balance, Common Stock, shares at Jun. 30, 2022	72,960,000	72,960,000
Balance, Treasury Stock, shares at Jun. 30, 2022	(12,803,000)		(12,803,000)
Balance, Treasury stock held for deferred compensation, shares at Jun. 30, 2022	(140,000)			(140,000)
Balances at Mar. 31, 2022	$ 2,051,879	$ 106	$ (829,446)	$ (6,678)	287,766	(39,668)	(17,443)	(6,026)	(63,137)	6,678	2,656,590
Balance, Common Stock, shares at Mar. 31, 2022		72,960,000
Balance, Treasury Stock, shares at Mar. 31, 2022			(11,427,000)
Balance, Treasury stock held for deferred compensation, shares at Mar. 31, 2022				(140,000)
Net earnings	39,446										39,446
Other comprehensive earnings (loss), net of tax	(18,605)					(27,185)	6,985	1,595	(18,605)
Cash dividends paid	(11,438)										(11,438)
Sales of treasury stock	770		$ 815		(45)
Sales of treasury stock, shares			18,000
Purchases of treasury stock	(155,618)		$ (155,618)
Purchases of treasury stock, shares			(1,394,000)
Stock-based compensation	3,179				3,179
Purchases/transfers of stock by/to deferred compensation plan				$ (68)						68
Purchases and transfer of stock by/to deferred compensation plan, shares				(1,000)
Distribution of stock from deferred compensation plan				$ (15)						15
Distribution of stock from deferred compensation plan, shares				1,000
Balances at Jun. 30, 2022	$ 1,909,613	$ 106	$ (984,249)	$ (6,761)	$ 290,900	$ (66,853)	$ (10,458)	$ (4,431)	$ (81,742)	$ 6,761	$ 2,684,598
Balance, Common Stock, shares at Jun. 30, 2022	72,960,000	72,960,000
Balance, Treasury Stock, shares at Jun. 30, 2022	(12,803,000)		(12,803,000)
Balance, Treasury stock held for deferred compensation, shares at Jun. 30, 2022	(140,000)			(140,000)