Summary Of Significant Accounting Policies (Schedule Of Ranges Of Estimated Useful Lives) (Details)	12 Months Ended
	Sep. 30, 2011
Land Improvements [Member]
Property, Plant and Equipment, Useful Life in Years, Minimum	6
Property, Plant and Equipment, Useful Life in Years, Maximum	25
Buildings And Building Equipment [Member]
Property, Plant and Equipment, Useful Life in Years, Minimum	20
Property, Plant and Equipment, Useful Life in Years, Maximum	40
Machinery And Equipment [Member]
Property, Plant and Equipment, Useful Life in Years, Minimum	3
Property, Plant and Equipment, Useful Life in Years, Maximum	10
Equipment Leased To Others [Member]
Property, Plant and Equipment, Useful Life in Years, Minimum	2
Property, Plant and Equipment, Useful Life in Years, Maximum	10