Stockholders' Equity (Weighted Average Grant Date Fair Value of Options Granted) (Details) - $ / shares	12 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Options granted, Weighted-Average Exercise Price Per Share	$ 46.55
Stock Options [Member]
Options granted, Weighted-Average Exercise Price Per Share	$ 17.02	$ 15.63	$ 15.84

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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