Business Segment Information (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Percentage Of Sale Of Customer Maximum	10.00%		10.00%
Capitalized Computer Software, Period Increase (Decrease)	$ 6.9	$ 8.6	$ 8.4
Percentage Of Sale Of Customer Minimum		10.00%