Income Taxes (Composition of Deferred Income Taxes) (Details) (USD $) In Thousands	Sep. 30, 2011	Sep. 30, 2010
Deferred tax assets:
Retirement healthcare and early retirement benefits	$ 12,417	$ 13,176
Foreign net operating loss carryforwards	4,276	2,245
Inventory	18,194	13,425
Deferred compensation	14,223	12,293
Defined benefit pension	7,681	2,943
Other	21,054	27,581
Valuation allowance	(3,201)	(96)
Total deferred tax assets, net of valuation allowance	74,644	71,567
Deferred tax liabilities:
Goodwill and intangibles - net	(103,393)	(96,267)
Other	(8,500)	(21,237)
Total deferred tax liabilities	(111,893)	(117,504)
Net deferred tax liabilities	$ (37,249)	$ (45,937)