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Stockholders' Equity And Stock-Based Compensation (Summary Of Stock Options Issued To Officers, Directors, And Employees Under 2000 Stock Incentive Plan And 2005 Stock Plan) (Details)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Jan. 01, 2016
USD ($)
$ / shares
shares
Shares  
Shares, Options outstanding at beginning of period | shares 8,835
Shares, Grants | shares 2,167
Shares, Exercises | shares (196)
Shares, Forfeitures and cancellations | shares (122)
Shares, Options vested and expected to vest | shares 9,849
Weighted-Average Exercise Price  
Weighted Average Exercise Price, Options outstanding at beginning of period $ 35.85
Weighted Average Exercise Price, Grants (in usd per share) 33.15
Weighted Average Exercise Price, Exercises (in usd per share) 28.02
Weighted Average Exercise Price, Forfeitures and cancellations (in usd per share) 40.40
Weighted Average Exercise Price, Options outstanding at end of period 35.39
Weighted Average Exercise Price, Options vested and expected to vest (in usd per share) 35.31
Weighted Average Exercise Price, Options exercisable (in usd per share) $ 33.65
Weighted Average Remaining Contractual Life, Options vested and expected to vest at end of period 7 years 4 months 24 days
Weighted Average Remaining Contractual Life, Options exercisable 6 years 1 month 6 days
Aggregate Intrinsic Value, Options outstanding | $ $ 16,417
Aggregate Intrinsic Value, Options vested and expected to vest | $ 16,130
Aggregate Intrinsic Value, Options exercisable | $ $ 14,117