Share-Based Compensation (Schedule Of Stock Options Awarded Under The Option Plans) (Details) (USD $)	12 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option ,Shares	125,816	435,054	761,931
Stock options Granted, Shares	0	0	0
Stock options Exercised, Shares	(51,116)	(100,872)	(104,912)
Stock options Cancelled, Shares	(7,350)	(208,366)	(221,965)
Stock options, Shares	67,350	125,816	435,054
Reserved for future grant	500,000	1,301,090	1,115,776
Stock options Exercisable, Shares	67,350	125,149	397,073
Stock options Weighted Average Price	$ 36.29	$ 35.58	$ 35.15
Stock options Granted, Weighted Average Price	$ 0	$ 0	$ 0
Stock options Exercised, Weighted Average Price	$ 34.70	$ 14.98	$ 13.18
Stock options Cancelled, Weighted Average Price	$ 37.30	$ 45.18	$ 44.67
Stock options Weighted Average Price	$ 37.39	$ 36.29	$ 35.58
Stock options Exercisable, Weighted Average Price	$ 37.39	$ 36.31	$ 35.42

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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)

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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 options outstanding and currently exercisable under the stock option plan.

+ References

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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- Definition

Net number of share options (or share units) granted during the period.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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No definition available.

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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No definition available.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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No definition available.

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- Definition

Number of share options (or share units) exercised during the current period.

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