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Share-Based Compensation (Schedule Of Information Regarding Stock Options Outstanding) (Details) (USD $) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2010
Options Outstanding, Number Outstanding | 67,350 | 125,816 | 435,054 | 761,931
Stock Options Outstanding, Weighted-Average Remaining Contractual Life | 22 days |  |  |
Options Outstanding, Weighted Average Exercise Price | $ 37.39 | $ 36.29 | $ 35.58 | $ 35.15
Exercisable Options Outstanding, Number Exercisable | 67,350 | 125,149 | 397,073 |
Exercisable Options Outstanding, Weighted Average Exercise Price | $ 37.39 | $ 36.31 | $ 35.42 |
$32.55 |  |  |  |
Options Outstanding, Number Outstanding | 2,000 |  |  |
Stock Options Outstanding, Weighted-Average Remaining Contractual Life | 1 year 3 months 18 days |  |  |
Options Outstanding, Weighted Average Exercise Price | $ 32.55 |  |  |
Exercisable Options Outstanding, Number Exercisable | 2,000 |  |  |
Exercisable Options Outstanding, Weighted Average Exercise Price | $ 32.55 |  |  |
$37.54 |  |  |  |
Options Outstanding, Number Outstanding | 65,350 |  |  |
Stock Options Outstanding, Weighted-Average Remaining Contractual Life | 7 days |  |  |
Options Outstanding, Weighted Average Exercise Price | $ 37.54 |  |  |
Exercisable Options Outstanding, Number Exercisable | 65,350 |  |  |
Exercisable Options Outstanding, Weighted Average Exercise Price | $ 37.54 |  |  |

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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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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 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 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock 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)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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