Equity Incentive Plan (Value Of Stock Option And Stock-Based Award Activity) (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]
Total intrinsic value of stock options exercised	$ 182	$ 2,040	$ 6,525
Total fair value of restricted stock and restricted stock unit awards vested	$ 84,189	$ 79,660	$ 48,083

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.

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=6415400&loc=d3e5070-113901

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration