Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Income Taxes [Abstract]
Taxes computed at statutory rate	35.00%	35.00%	35.00%
State income taxes (net of federal income tax benefit)	3.40%	3.60%	3.70%
Foreign	(0.90%)	(1.10%)	(0.90%)
Other	0.10%	0.30%	0.20%
Effective Income Tax Rate, Total	37.60%	37.80%	38.00%