Stock-Based Compensation (Tables)

6 Months Ended

Mar. 31, 2013

Stock-Based Compensation

Schedule of Assumptions Used in Estimate of Fair Value of Stock Option Awards

	Three-Months Ended						Six-Months Ended
	March 31,						March 31,
	2013		2012				2013				2012
Expected term		5.8 years		5.9 years				5.8	-	8.6 years		5.9	-	8.5 years
Estimated volatility		54.9%		55.5%	-	55.6%		48.7%	-	54.9%		48.9%	-	55.6%
Estimated dividend yield		0.8%		0.7%				0.8%	-	1.0%		0.7%	-	1.1%
Risk-free interest rate		1.0%		1.0%	-	1.3%		0.8%	-	1.3%		1.0%	-	1.6%

Activity for Stock Option Awards

	Three-Months Ended				Six-Months Ended
	March 31, 2013				March 31, 2013
	Number of options		Weighted-Average Exercise Price per Share		Number of options		Weighted-Average Exercise Price per Share
Options, beginning balance		4,970	$	23.94		4,556	$	21.79
Options granted		10		38.88		690		33.71
Options exercised		(441)		14.41		(693)		13.11
Options forfeited		(4)		30.00		(18)		28.61
Options, ending balance		4,535		24.90		4,535		24.90

Changes in Nonvested Stock Options

	Three-Months Ended				Six-Months Ended
	March 31, 2013				March 31, 2013
	Number of options		Weighted-Average Exercise Price per Share		Number of options		Weighted-Average Exercise Price per Share
Options, beginning balance		1,775	$	29.95		1,670	$	27.07
Options granted		10		38.88		690		33.71
Options vested		(23)		32.18		(584)		26.15
Options forfeited		(4)		30.00		(18)		28.61
Options, ending balance		1,758		29.97		1,758		29.97

Stock Options Vested, Or Expected to Vest and Are Exercisable

	Number		Weighted- Average Exercise Price		Weighted- Average Remaining Life in Years		Aggregate Intrinsic Value
Options outstanding		4,535	$	24.90		6.1	$	67,478
Options vested and exercisable		2,777		21.69		4.6		50,203
Options vested and expected to vest		4,412		24.73		6.1		66,374