Stock-Based Compensation (Changes in Nonvested Stock Options) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
	Jun. 30, 2013	Jun. 30, 2013
Stock-Based Compensation
Number of Options, beginning balance	1,758	1,670
Weighted-Average Exercise Price Per Share, beginning balance	$ 29.97	$ 27.07
Options granted, Number of options	3	693
Options granted, Weighted-Average Exercise Price Per Share	$ 36.00	$ 33.72
Options vested, Number of options	(10)	(594)
Options vested, Weighted-Average Exercise Price Per Share	$ 30.31	$ 26.22
Options forfeited, Number of options	(10)	(28)
Options forfeited, Weighted-Average Exercise Price Per Share	$ 29.93	$ 29.07
Number of Options, ending balance	1,741	1,741
Weighted-Average Exercise Price Per Share, ending balance	$ 29.98	$ 29.98