Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-in Capital [Member]	Total Accumulated Other Comprehensive (Loss) Earnings [Member]	Foreign Currency Translation Adjustments [Member]	Unrealized Derivative Gains (Losses) [Member]	Minimum Retirement Benefit Liability Adjustments [Member]	Deferred Compensation in Equity [Member]	Retained Earnings [Member]	Treasury Stock at Cost [Member]	Treasury Stock Held for Deferred Compensaton [Member]	Total
Balances at Sep. 30, 2011	$ 106	$ 81,453	$ 3,626	$ 22,103	$ (484)	$ (17,993)	$ 4,581	$ 949,573	$ (115,661)	$ (4,581)	$ 919,097
Balance, Treasury Stock, shares at Sep. 30, 2011									(4,070,000)
Balance, Common Stock, shares at Sep. 30, 2011	72,960,000
Balance, Treasury stock held for deferred compensation, Shares at Sep. 30, 2011										(315,000)
Net earnings								141,589			141,589
Other Comprehensive Income (Loss), Net of Tax			(15,349)	(4,656)	108	(10,801)					(15,349)
Cash dividends paid								(21,351)			(21,351)
Purchases of treasury stock									(44,110)		(44,110)
Purchases of treasury stock, shares									(1,132,000)
Sales of treasury stock		(1,542)							7,720		6,178
Sales of treasury stock, shares									(454,000)
Common shares issued from treasury stock for benefit plans		5,238							4,097		9,335
Common shares issued from treasury stock for benefit plans, shares									209,000
Tax benefit attributable to exercise of stock options		3,990									3,990
Stock-based compensation		8,628									8,628
Transfer of stock to deferred compensation plan		59					108		49	(108)	108
Transfer of stock to deferred compensation plan, shares									3,000	(3,000)
Purchases of stock by deferred compensation plan							93			(93)
Purchases of stock by deferred compensation plan, shares										(2,000)
Distribution of stock from deferred compensation plan							(438)			438
Distribution of stock from deferred compensation plan, shares										44,000
Balances at Sep. 30, 2012	106	97,826	(11,723)	17,447	(376)	(28,794)	4,344	1,069,811	(147,905)	(4,344)	1,008,115
Balance, Treasury Stock, shares at Sep. 30, 2012									(4,536,000)
Balance, Common Stock, shares at Sep. 30, 2012	72,960,000
Balance, Treasury stock held for deferred compensation, Shares at Sep. 30, 2012										(276,000)
Net earnings								145,942			145,942
Other Comprehensive Income (Loss), Net of Tax			26,838	8,295	419	18,124					26,838
Cash dividends paid								(21,866)			(21,866)
Purchases of treasury stock									(51,846)		(51,846)
Purchases of treasury stock, shares									(1,395,000)
Sales of treasury stock		(13,194)							24,110		10,916
Sales of treasury stock, shares									796,000
Common shares issued from treasury stock for benefit plans		1,923							7,857		9,780
Common shares issued from treasury stock for benefit plans, shares									250,000
Tax benefit attributable to exercise of stock options		5,154									5,154
Stock-based compensation		9,414									9,414
Transfer of stock to deferred compensation plan		24					97		74	(97)	98
Transfer of stock to deferred compensation plan, shares									2,000	(2,000)
Purchases of stock by deferred compensation plan							79			(79)
Purchases of stock by deferred compensation plan, shares										(2,000)
Distribution of stock from deferred compensation plan							(513)			513
Distribution of stock from deferred compensation plan, shares										48,000
Balances at Sep. 30, 2013	106	101,147	15,115	25,742	43	(10,670)	4,007	1,193,887	(167,710)	(4,007)	1,142,545
Balance, Treasury Stock, shares at Sep. 30, 2013									(4,883,000)		(4,883,000)
Balance, Common Stock, shares at Sep. 30, 2013	72,960,000										72,960,000
Balance, Preferred Stock, shares at Sep. 30, 2013											0
Balance, Treasury stock held for deferred compensation, Shares at Sep. 30, 2013										(232,000)	(232,000)
Net earnings								165,844			165,844
Other Comprehensive Income (Loss), Net of Tax			(18,648)	(14,923)	62	(3,787)					(18,648)
Cash dividends paid								(21,263)			(21,263)
Purchases of treasury stock									(144,510)		(144,510)
Purchases of treasury stock, shares									(3,336,000)
Sales of treasury stock		(6,217)							17,276		11,059
Sales of treasury stock, shares									562,000
Common shares issued from treasury stock for benefit plans		2,837							8,356		11,193
Common shares issued from treasury stock for benefit plans, shares									260,000
Tax benefit attributable to exercise of stock options		3,483									3,483
Stock-based compensation		11,241									11,241
Purchases of stock by deferred compensation plan							370			(370)
Purchases of stock by deferred compensation plan, shares										(8,000)
Distribution of stock from deferred compensation plan							(462)			462
Distribution of stock from deferred compensation plan, shares										42,000
Balances at Sep. 30, 2014	$ 106	$ 112,491	$ (3,533)	$ 10,819	$ 105	$ (14,457)	$ 3,915	$ 1,338,468	$ (286,588)	$ (3,915)	$ 1,160,944
Balance, Treasury Stock, shares at Sep. 30, 2014									(7,397,000)		(7,397,000)
Balance, Common Stock, shares at Sep. 30, 2014	72,960,000										72,960,000
Balance, Preferred Stock, shares at Sep. 30, 2014											0
Balance, Treasury stock held for deferred compensation, Shares at Sep. 30, 2014										(198,000)	(198,000)