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	3 Months Ended
	Dec. 27, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Shares, Options outstanding	6,385
Shares, Grants	2,075
Shares, Exercises	(178)
Shares, Forfeitures	(37)
Shares, Options outstanding	8,245
Shares, Options vested and expected to vest	8,031
Shares, Options exercisable	3,177
Weighted Average Exercise Price, Options outstanding	$ 29.82
Weighted Average Exercise Price, Grants	$ 37.33
Weighted Average Exercise Price, Exercises	$ 26.56
Weighted Average Exercise Price, Forfeitures	$ 32.58
Weighted Average Exercise Price, Options outstanding	$ 31.77
Weighted Average Exercise Price, Options vested and expected to vest	$ 31.80
Weighted Average Exercise Price, Options exercisable	$ 29.20
Weighted Average Remaining Contractual Life, Options outstanding	7 years 10 months 24 days
Weighted Average Remaining Contractual Life, Options vested and expected to vest at September 28, 2012	7 years 10 months 24 days
Weighted Average Remaining Contractual Life, Options exercisable	5 years 10 months 24 days
Aggregate Intrinsic Value, Options outstanding	$ 56,745	[1]
Aggregate Intrinsic Value, Options vested and expected to vest	54,999	[1]
Aggregate Intrinsic Value, Options exercisable	$ 31,049	[1]

[1] Aggregate intrinsic value is based on the closing price of our common stock on December 27, 2013 of $38.38 and excludes the impact of options that were not in-the-money.