The weighted average grant-date fair value of options vested during the reporting period.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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The maximum vesting term over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition.

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The minimum vesting term over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

The weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect during the reporting period as a result of the occurrence of a terminating event specified in the contractual agreement of the plan.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph A240

-Subparagraph b(2)(c)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

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-Topic 718

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-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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

-Publisher FASB

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-Paragraph A240

-Subparagraph b(2)(a)

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-Publisher FASB

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-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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-Publisher FASB

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-Paragraph A240

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-Name Accounting Standards Codification

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-Section 50

-Paragraph 2

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.

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-Topic 718

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-Section 50

-Paragraph 2

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The weighted average period between the balance sheet date and expiration for all vested portions of options outstanding and currently exercisable (or convertible) under the plan, which may be expressed in a decimal value for number of years.

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- Definition

The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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As of the balance sheet date, the total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of fully vested and expected to vest options outstanding.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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STOCK-BASED COMPENSATION (Details 3) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended
	Dec. 31, 2010	Sep. 30, 2011 Y	Sep. 30, 2010	Sep. 30, 2009
Stock options
Stock based awards
Exercisable stock options, weighted-average remaining life (in years)		4.1
Exercisable stock options, aggregate intrinsic value (in dollars)		$ 60.1
Exercisable Stock Options, Weighted-Average Exercise Price (in dollars per share)		$ 22.35
Number of options vested or expected to vest (in shares)		4,467,093
Options vested or expected to vest, aggregate intrinsic value (in dollars)		69.0
Options vested or expected to vest, weighted-average exercise price (in dollars per share)		$ 25.67
Unrecognized compensation cost (in dollars)		9.7
Unrecognized compensation cost expected to be recognized (in years)		2.5
Total intrinsic value of options exercised (in dollars)		50.5	11.3	4.9
Grant date fair value of shares vested (in dollars)		7.9	7.0	6.3
Minimum vested period (in years)		1Y
Maximum vested period (in years)		4Y
Restricted stock
Stock based awards
Unrecognized compensation cost (in dollars)		$ 7.9
Unrecognized compensation cost expected to be recognized (in years)		2.2
Minimum vested period (in years)		3Y
Maximum vested period (in years)		6Y
Restricted stock awards activity, shares
Unvested at the beginning of the period (in shares)		289,000	177,000	243,000
Granted (in shares)	169,375	169,375	182,000
Vested (in shares)		(134,000)	(70,000)	(66,000)
Forfeited (in shares)		(1,000)
Unvested at the end of the period (in shares)		323,000	289,000	177,000
Restricted stock awards activity, weighted average grant date fair value
Unvested at the beginning of the period (in dollars per share)		$ 35.23	$ 30.06	$ 29.92
Granted (in dollars per share)		$ 47.94	$ 38.02
Vested (in dollars per share)		$ 33.92	$ 29.36	$ 29.52
Forfeited (in dollars per share)		$ 47.94
Unvested at the end of the period (in dollars per share)		$ 42.38	$ 35.23	$ 30.06