Share-Based Compensation (Details 2) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Sep. 30, 2011 Installment Year Contract
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SARs, Beginning Balance	7,659,155
Exercised, SARs	(555,155)
SARs, Ending Balance	9,027,037
SARs, Weighted Average Exercise Price Beginning Balance	$ 70.46
Weighted Average Exercise Price Exercised	$ 66.58
SARs, Weighted Average Exercise Price Forfeited, canceled or expired	$ 72.71
SARs, Weighted Average Exercise Price Ending Balance	$ 72.14
SARs, Aggregate intrinsic Value	$ 35,203
SARs, Vested and expected to vest at ending balance	8,584,694
SARs, Exercisable at ending balance	4,603,602
SARs, Weighted Average Exercise Price, Vested and expected to vest at ending balance	$ 72.03
SARs, Weighted Average Exercise Price Exercisable at ending balance	$ 70.09
SARs, weighted Average Remaining Contractual Term (Years), Vested and expected to vest at ending balance	7.00
SARs, Weighted Average Remaining Contractual Term (Years). Exercisable at ending balance	5.85
SARs, Aggregate Intrinsic Value, Vested and expected to vest at ending balance	34,346
SARs, Average Intrinsic Value, exercisable at ending balance	$ 26,631
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, SARs	2,216,436
Forfeited, canceled or expired, Stock Units	(293,399)
SARs Weighted Average Remaining Contractual Term (Years)	7.07
Weighted average grant date fair value of SARs	$ 76.64

The number of exercisable stock appreciation rights (fully vested and expected to vest) that may be converted as of the balance sheet date.

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of stock appreciation rights outstanding and currently exercisable under the award plan.

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- Definition

Number of stock appreciation rights exercised during the current period.

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- Definition

The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices pertaining to stock appreciation rights outstanding under the plan as of the balance sheet date.

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- Definition

The number of stock appreciation rights that validly exist and are outstanding as of the balance sheet date, including vested options.

+ Details

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- Definition

The weighted average price of shares reserved for issuance under stock appreciation right incentive compensation plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ Details

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- Definition

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 stock appreciated rights outstanding.

+ Details

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- Definition

The number of stock appreciation rights (fully vested and expected to vest) that may be converted as of the balance sheet date.

+ Details

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- Definition

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

+ Details

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- Definition

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- Definition

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

+ Details

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- Definition

The weighted exercise price of stock appreciation rights exercised during the reporting period.

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- Definition

The weighted-average period between the balance sheet date and expiration date for fully vested and expected to vest stock appreciation rights under the plan, which may be expressed in a decimal value for number of years.

+ Details

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- Definition

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

+ References

+ Details

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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.

+ References

+ Details

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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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- Definition

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)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(c)

-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.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph c(1)

-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.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-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 weighted average period between the balance sheet date and expiration for equity-based awards other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan), which may be expressed in a decimal value for number of years.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Section 50

-Paragraph 2

-Subparagraph (e)(1)

-SubTopic 10

-Topic 718

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

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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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