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Stock Plans (Tables)

12 Months Ended

Sep. 30, 2015

Stock Plans

Schedule of stock option activity

		Number of Options (in millions)			Weighted Average Exercise Price
Balance, September 30, 2012			2.5		$	22.81
Granted			—			—
Exercised			(0.8	)		18.31
Cancelled			(0.1	)		26.83
​	​	​	​	​	​	​	​
Balance, September 30, 2013			1.6			24.73
​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​
Granted			0.6			31.62
Exercised			(0.5	)		23.64
Cancelled			(0.1	)		26.87
​	​	​	​	​	​	​	​
Balance, September 30, 2014			1.6			27.69
​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​
Granted			—			—
Exercised			(0.3	)		24.98
Cancelled			—			—
​	​	​	​	​	​	​	​
Balance, September 30, 2015			1.3			28.26
​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​
Exercisable as of September 30, 2013			1.4			24.51
​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​
Exercisable as of September 30, 2014			0.9			25.16
​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​
Exercisable as of September 30, 2015			0.7			25.04
​	​	​	​	​	​	​	​
​	​	​	​	​	​	​	​

Summary of information concerning outstanding and exercisable options

Options Outstanding

Options Exercisable

Number Outstanding as of September 30, 2015 (in millions)

Weighted Average Remaining Contractual Life

Weighted Average Exercise Price

Aggregate Intrinsic Value (in millions)

Number Exercisable as of September 30, 2015 (in millions)

Weighted Average Remaining Contractual Life

Weighted Average Exercise Price

Range of Exercise Prices

$21.01 - $23.94

0.2

0.23

$

23.19

$

1.1

0.2

0.23

$

23.19

24.45 -  27.67

0.4

1.47

25.43

0.9

0.4

1.47

25.43

28.04 -  31.62

0.7

7.67

31.25

—

0.1

2.01

28.53

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1.3

4.69

28.26

$

2.0

0.7

1.10

25.04

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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.

+ References

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-Name Accounting Standards Codification



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Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



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