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Stock Plans (Tables)

12 Months Ended

Sep. 30, 2013

Stock Plans

Weighted average assumptions used to determine fair value of options granted

		Fiscal Year Ended September 30, 2011
Dividend yield			0.0	%
Expected volatility			38.6	%
Risk-free interest rate			1.5	%
Term (in years)			4.5

Schedule of stock option activity

		Number of Options			Weighted Average Exercise Price
		(in millions)
Balance, September 30, 2010			3.1		$	19.09
Granted			0.4			27.65
Exercised			(0.5	)		12.28
Cancelled			(0.1	)		23.91
Balance, September 30, 2011			2.9			21.38
Granted			—			—
Exercised			(0.4	)		11.40
Cancelled			—			26.23
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
Exercisable as of September 30, 2011			2.1		$	19.55
Exercisable as of September 30, 2012			2.1		$	22.07
Exercisable as of September 30, 2013			1.4		$	24.51

Summary of information concerning outstanding and exercisable options

		Options Outstanding												Options Exercisable
		Number Outstanding as of September 30, 2013			Weighted Average Remaining Contractual Life			Weighted Average Exercise Price			Aggregate Intrinsic Value			Number Exercisable as of September 30, 2013			Weighted Average Remaining Contractual Life			Weighted Average Exercise Price
		(in millions)									(in millions)			(in millions)
Range of Exercise Prices
$14.20 - $23.94			0.6			1.90		$	22.20		$	5.8			0.6			1.90		$	22.20
24.45 - 26.47			0.4			2.96			24.56			2.4			0.4			2.96			24.56
27.00 - 34.00			0.6			2.99			27.84			1.9			0.4			2.68			27.91
14.20 - 34.00			1.6			2.53			24.73		$	10.1			1.4			2.40			24.51

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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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-Name Statement of Financial Accounting Standard (FAS)

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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.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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