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Income Taxes (Summary Of Valuation Allowance) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |  |  |
Valuation allowance beginning of year |  | $ 198,168 | [1] | $ 177,500 |  | $ 156,500
Net release of valuation allowance | [2] | (3,100) |  | (18,700) |  | (18,100)
Net increase in deferred tax assets for foreign jurisdictions with a full valuation allowance |  | 39,800 |  | 39,400 |  | 14,100
Establish valuation allowance for acquired businesses |  | 0 |  | 0 |  | 21,500
Establish valuation allowance in foreign jurisdictions |  | 600 |  | 0 |  | 3,500
Valuation allowance end of year |  | $ 235,503 | [1] | $ 198,168 | [1] | $ 177,500
[1] | (1) See Note B. Recent Accounting Pronouncements-Deferred Taxes regarding a change in the balance sheet classification of our deferred taxes.
[2] | In 2016, this is attributable to the release in two foreign jurisdictions. In 2015, this is attributable to a reduction in deferred tax assets associated with our U.S. pension plan, both of which are described above and in 2014 the recognition of deferred tax liabilities recorded in connection with accounting for acquisitions.

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- Definition Net decrease in deferred tax assets for foreign jurisdictions with a full valuation allowance + References No definition available. + Details
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- Definition Valuation allowance, net increase in deferred tax assets for foreign jurisdictions with a full valuation allowance + References No definition available. + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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