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Business Segment Information (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
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Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013
Percentage Of Sale Of Customer Maximum | 10.00% |  | 10.00%
Capitalized Computer Software, Period Increase (Decrease) | $ 6.9 | $ 8.6 | $ 8.4
Percentage Of Sale Of Customer Minimum |  | 10.00% |

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- Definition Percentage Of Sale Of Customer Minimum. + References No definition available. + Details
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- Definition Total increases or decreases in capitalized computer software costs for period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 + Details
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