Share-Based Compensation (Schedule Of Outstanding Restricted Share Awards) (Details) - $ / shares	12 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding restricted share awards, Nonvested at October 1,	335,825	427,438	326,536
Outstanding restricted share awards, Granted, Shares	104,320	110,422	120,902
Outstanding restricted share awards, Vested, Shares	(121,301)	(202,035)	(8,000)
Outstanding restricted share awards, Cancelled, Shares	(3,300)	0	(12,000)
Outstanding restricted share awards, Nonvested at September 30,	315,544	335,825	427,438
Outstanding restricted share awards, Nonvested at October 1, Weighted Avg. Price	$ 40.35	$ 35.40	$ 35.29
Outstanding restricted share awards, Granted, Weighted Avg. Price	56.06	51.16	35.75
Outstanding restricted share awards, Vested, Weighted Avg. Price	35.59	35.78	36.06
Outstanding restricted share awards, Cancelled, Weighted Avg. Price	53.86	0	35.47
Outstanding restricted share awards, Nonvested at September 30, Weighted Avg. Price	$ 47.23	$ 40.35	$ 35.40

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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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 as a result of the occurrence of a terminating event.

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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).

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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).

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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.

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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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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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No definition available.

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