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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
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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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