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Income Taxes (Income Tax Benefits Realized From The Exercise Of Nonqualified Stock Options, And Disqualifying Dispositions Of Stock Sold Under Our Employee Stock Purchase Plans) (Details) (USD $) In Millions | 12 Months Ended
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Sep. 30, 2011 | Oct. 01, 2010 | Oct. 02, 2009
Income Taxes |  |  |
Income tax benefits realized under stock plans | $ 11.9 | $ 4.0 | $ 4.7

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