Property, Plant, and Equipment (Schedule of Property Plant and Equipment, Net) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	$ 1,715,137	$ 1,679,720
Less accumulated depreciation	(793,472)	(769,248)
Property, plant, and equipment, net	921,665	910,472
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	85,988	84,057
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	575,954	555,387
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	20,327	19,392
Machinery and Production Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	789,710	779,514
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	125,630	122,670
Office Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	40,937	39,749
Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	20,259	20,162
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	$ 56,332	$ 58,789