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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) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Sep. 30, 2011
Stockholders' Equity And Stock-Based Compensation [Abstract] 
Shares, Options outstanding at September 24, 20105,625
Shares, Grants1,628
Shares, Exercises(1,166)
Shares, Forfeitures(286)
Shares, Options outstanding at September 30, 20115,801
Shares, Options vested and expected to vest at September 30, 20115,549
Shares, Options exercisable at September 30, 20112,721
Weighted Average Exercise Price, Options outstanding at September 24, 2010$ 35.05
Weighted Average Exercise Price, Grants$ 62.30
Weighted Average Exercise Price, Exercises$ 19.27
Weighted Average Exercise Price, Forfeitures$ 49.07
Weighted Average Exercise Price, Options outstanding at September 30, 2011$ 45.19
Weighted Average Exercise Price, Options vested and expected to vest at September 30, 2011$ 44.94
Weighted Average Exercise Price, Options exercisable at September 30, 2011$ 34.91
Weighted Average Remaining Contractual Life, Options outstanding at September 30, 20117.5
Weighted Average Remaining Contractual Life, Options vested and expected to vest at September 30, 2011$ 7.4
Weighted Average Remaining Contractual Life, Options exercisable at September 30, 2011$ 6.2
Aggregate Intrinsic Value, Options outstanding at September 30, 2011$ 8,358
Aggregate Intrinsic Value, Options vested and expected to vest at September 30, 20118,358
Aggregate Intrinsic Value, Options exercisable at September 30, 2011$ 8,357