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Stockholders' Equity And Stock-Based Compensation (Schedule Of Stock-Based Compensation Expense By Plan) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 26, 2025	Sep. 27, 2024	Sep. 29, 2023
Stockholders' Equity And Stock-Based Compensation [Line Items]
Allocated Share-based Compensation Expense	$ 128,514	$ 119,825	$ 118,486
Share based compensation expense	128,514	119,825	118,486
Benefit from income taxes	(19,847)	(17,290)	(17,844)
Allocated Share-based Compensation Expense, Net of Tax	108,667	102,535	100,642
Stock Option [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Share based compensation expense	6,841	6,726	8,486
Restricted Stock Units [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Share based compensation expense	117,803	109,031	105,915
Capitalized stock-based compensation	300	600	1,200
Employee Stock Purchase Plan [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Share based compensation expense	$ 3,870	$ 4,068	$ 4,085

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