Stock-Based Compensation (Tables)

9 Months Ended

Jun. 30, 2012

Stock-Based Compensation

Summary of compensation cost for stock-based payment arrangements recognized in general and administrative expense

	Three Months Ended				Nine Months Ended
	June 30,				June 30,
	2012		2011		2012		2011
Compensation expense
Stock options	$	2,314	$	1,696	$	7,345	$	5,509
Restricted stock	2,228		1,274		5,955		3,605
	$	4,542	$	2,970	$	13,300	$	9,114

Summary of weighted-average assumptions utilized in determining the fair value of options granted

	2012		2011
Risk-free interest rate	1.0	%	1.9	%
Expected stock volatility	53.3	%	51.6	%
Dividend yield	0.4	%	0.5	%
Expected term (in years)	5.5		5.5

Summary of stock option activity

	Three Months Ended June 30, 2012
					Weighted-
			Weighted-		Average	Aggregate
			Average		Remaining	Intrinsic
	Shares		Exercise		Contractual Term	Value
Options	(in thousands)		Price		(in years)	(in millions)
Outstanding at April 1, 2012	4,739		$	29.58
Granted	3		47.29
Exercised	(22	)	21.26
Forfeited/Expired	(19	)	49.30
Outstanding at June 30, 2012	4,701		$	29.55	5.1	$	74.1
Vested and expected to vest at June 30, 2012	4,661		$	29.53	5.1	$	73.6
Exercisable at June 30, 2012	3,587		$	24.67	4.1	$	68.2

	Nine Months Ended June 30, 2012
			Weighted-
			Average
	Shares		Exercise
Options	(in thousands)		Price
Outstanding at October 1, 2011	4,589		$	25.84
Granted	456		59.68
Exercised	(303	)	16.96
Forfeited/Expired	(41	)	42.04
Outstanding at June 30, 2012	4,701		$	29.55

Summary of restricted stock awards and changes in restricted stock outstanding

	Nine Months Ended
	June 30, 2012
			Weighted-
			Average
	Shares		Grant-Date
Restricted Stock Awards	(in thousands)		Fair Value
Unvested at October 1, 2011	323		$	42.38
Granted	244		59.76
Vested (1)	(119	)	40.21
Forfeited	(18	)	49.47
Unvested at June 30, 2012	430		$	52.53

(1)The number of restricted stock awards vested includes shares that we withheld on behalf of our employees to satisfy the statutory tax withholding requirements.