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STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Sep. 30, 2015

STOCK-BASED COMPENSATION

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

		September 30,
		2015			2014			2013
		(in thousands)
Compensation expense
Stock options		$	8,846		$	11,268		$	11,512
Restricted stock			16,349			15,435			11,759
​	​	​	​	​	​	​	​	​	​	​
		$	25,195		$	26,703		$	23,271
​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​	​	​	​

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

		2015			2014			2013
Risk-free interest rate			1.7	%		1.6	%		0.7	%
Expected stock volatility			36.9	%		52.6	%		53.9	%
Dividend yield			3.9	%		3.1	%		1.1	%
Expected term (in years)			5.5			5.5			5.5

Summary of stock option activity

The following summary reflects the stock option activity for our common stock and related information for fiscal 2015, 2014 and 2013 (shares in thousands):

		2015						2014						2013
		Options			Weighted-Average Exercise Price			Options			Weighted-Average Exercise Price			Options			Weighted-Average Exercise Price
Outstanding at October 1,			2,629		$	43.46			3,991		$	34.12			4,690		$	29.56
Granted			420			68.83			261			79.67			365			54.18
Exercised			(255	)		28.46			(1,613	)		26.08			(1,057	)		20.68
Forfeited/Expired			(18	)		66.78			(10	)		68.82			(7	)		52.32
​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​
Outstanding on September 30,			2,776		$	48.51			2,629		$	43.46			3,991		$	34.12
​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​
Exercisable on September 30,			2,014		$	41.62			1,884		$	35.93			3,063		$	28.48
​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​
Shares available to grant			2,515						3,432						4,116

Summary of information about outstanding and exercisable stock options

The following table summarizes information about stock options at September 30, 2015 (shares in thousands):

Outstanding Stock Options

Exercisable Stock Options

Range of Exercise Prices

Options

Weighted-Average Remaining Life

Weighted-Average Exercise Price

Options

Weighted-Average Exercise Price

$21.065 to $38.015

1,198

2.5

$

30.13

1,197

$

30.13

$47.29 to $59.76

911

6.3

$

54.85

650

$

54.25

$68.83 to $79.67

667

8.8

$

72.85

167

$

74.83

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

$21.065 to $79.67

2,776

5.3

$

48.51

2,014

$

41.62

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Summary of restricted stock awards and changes in restricted stock outstanding

A summary of the status of our restricted stock awards as of September 30, 2015, and of changes in restricted stock outstanding during the fiscal years ended September 30, 2015, 2014 and 2013, is as follows (shares in thousands):

		2015						2014						2013
		Shares			Weighted-Average Grant Date Fair Value per Share			Shares			Weighted-Average Grant Date Fair Value per Share			Shares			Weighted-Average Grant Date Fair Value per Share
Outstanding at October 1,			634		$	64.03			576		$	55.17			430		$	52.52
Granted			275			68.83			230			79.67			307			54.18
Vested (1)			(214	)		60.80			(157	)		54.08			(155	)		45.88
Forfeited			(27	)		64.45			(15	)		67.92			(6	)		54.67
​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​	​
Outstanding on September 30			668		$	67.03			634		$	64.03			576		$	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.

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Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

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