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Stockholders' Equity (Changes in Nonvested Stock Options) (Details) shares in Thousands | 3 Months Ended
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Dec. 31, 2015 $ / shares shares
Stock-Based Compensation |
Number of Options, beginning balance | shares | 1,724
Weighted-Average Exercise Price Per Share, beginning balance | $ / shares | $ 40.54
Options granted, Number of options | shares | 1,055
Options granted, Weighted-Average Exercise Price Per Share | $ / shares | $ 40.26
Options vested, Number of options | shares | (674)
Options vested, Weighted-Average Exercise Price Per Share | $ / shares | $ 36.93
Options forfeited, Number of options | shares | (11)
Options forfeited, Weighted-Average Exercise Price Per Share | $ / shares | $ 43.54
Number of Options, ending balance | shares | 2,094
Weighted-Average Exercise Price Per Share, ending balance | $ / shares | $ 41.54

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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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