Stock-Based Compensation (Tables)

3 Months Ended

Dec. 31, 2012

Stock-Based Compensation

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

A summary of compensation cost for stock-based payment arrangements recognized in general and administrative expense is as follows (in thousands):

	Three Months Ended
	December 31,
	2012		2011
Compensation expense
Stock options	$	3,483	$	2,488
Restricted stock	2,545		1,434
	$	6,028	$	3,922

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

	2012		2011
Risk-free interest rate	0.7	%	1.0	%
Expected stock volatility	53.87	%	53.3	%
Dividend yield	1.1	%	0.4	%
Expected term (in years)	5.5		5.5

Summary of stock option activity

	Three Months Ended December 31, 2012
					Weighted-
			Weighted-		Average	Aggregate
			Average		Remaining	Intrinsic
	Shares		Exercise		Contractual Term	Value
Options	(in thousands)		Price		(in years)	(in millions)
Outstanding at October 1, 2012	4,690		$	29.56
Granted	365		54.18
Exercised	(581	)	15.51
Forfeited/Expired	(2	)	53.85
Outstanding at December 31, 2012	4,472		$	33.38	5.5	$	102.8
Vested and expected to vest at December 31, 2012	4,450		$	32.94	5.5	$	102.6
Exercisable at December 31, 2012	3,540		$	28.27	4.6	$	98.6

Summary of restricted stock awards and changes in restricted stock outstanding

	Three Months Ended
	December 31, 2012
			Weighted-
			Average
	Shares		Grant-Date
Restricted Stock Awards	(in thousands)		Fair Value
Unvested at October 1, 2012	430		$	52.52
Granted	307		54.18
Vested (1)	(155	)	45.88
Forfeited	(1	)	54.69
Unvested at December 31, 2012	581		$	55.17

(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.