Stock-Based Compensation (Schedule of Assumptions Used in Estimate of Fair Value of Stock Option Awards) (Details)	9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Estimated volatility	36.50%	38.50%
Estimated dividend yield	0.70%	0.80%
Minimum [Member]
Expected term	6 years 2 months 12 days	5 years 9 months 18 days
Risk-free interest rate	2.00%	1.70%
Maximum [Member]
Expected term	8 years 9 months 18 days	8 years 7 months 6 days
Risk-free interest rate	2.30%	2.50%