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	6 Months Ended
	Mar. 27, 2015
Shares
Shares, Options outstanding at beginning of period	7,611
Shares, Grants	2,418
Shares, Exercises	(298)
Shares, Forfeitures and cancellations	(498)
Shares, Options outstanding at end of period	9,233
Shares, Options vested and expected to vest	8,719
Shares, Options exercisable	4,180
Weighted-Average Exercise Price
Weighted Average Exercise Price, Options outstanding at beginning of period	$ 32.96
Weighted Average Exercise Price, Grants (in usd per share)	$ 42.80
Weighted Average Exercise Price, Exercises (in usd per share)	$ 28.76
Weighted Average Exercise Price, Forfeitures and cancellations (in usd per share)	$ 36.40
Weighted Average Exercise Price, Options outstanding at end of period	$ 35.49
Weighted Average Exercise Price, Options vested and expected to vest (in usd per share)	$ 35.11
Weighted Average Exercise Price, Options exercisable (in usd per share)	$ 31.66
Weighted Average Remaining Contractual Life, Options outstanding	7 years 7 months 6 days
Weighted Average Remaining Contractual Life, Options vested and expected to vest at end of period	7 years 6 months
Weighted Average Remaining Contractual Life, Options exercisable	6 years 1 month 6 days
Aggregate Intrinsic Value, Options outstanding	$ 38,754
Aggregate Intrinsic Value, Options vested and expected to vest	38,542
Aggregate Intrinsic Value, Options exercisable	$ 29,167