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Equity Incentive Plan (Value Of Stock Option And Stock-Based Award Activity) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract] |  |  |
Total intrinsic value of stock options exercised | $ 0 | $ 88 | $ 182
Total fair value of restricted stock and restricted stock unit awards vested | $ 78,573 | $ 63,655 | $ 84,189

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- Definition Share-based Compensation Arrangement By Share-based Payment Award, Options, Exercises In Period, Total Fair Value Of Restricted Stock And Restricted Stock Unit Awards Vested + References No definition available. + Details
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- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + 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 (d)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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