Summary of Significant Accounting Policies (Property, Plant, and Equipment) (Details)	12 Months Ended
	Sep. 30, 2017
Building | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	20 years
Building | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	30 years
Equipment, Machinery And Leasehold Improvements | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	3 years
Equipment, Machinery And Leasehold Improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	7 years
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	5 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life (in years)	10 years