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Stockholders' Equity And Stock-Based Compensation (Schedule Of Stock-Based Compensation Expense By Plan) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jul. 01, 2022 | Jun. 30, 2023 | Jul. 01, 2022
Stockholders' Equity And Stock-Based Compensation [Line Items] |  |  |  |
Total stock-based compensation expense | $ 29,224 | $ 27,608 | $ 90,291 | $ 87,963
Estimated benefit from income taxes | (4,493) | (4,280) | (13,692) | (13,811)
Total stock-based compensation, net of tax | 24,731 | 23,328 | 76,599 | 74,152
Stock options |  |  |  |
Stockholders' Equity And Stock-Based Compensation [Line Items] |  |  |  |
Total stock-based compensation expense | 2,059 | 2,321 | 6,472 | 7,939
Restricted stock units |  |  |  |
Stockholders' Equity And Stock-Based Compensation [Line Items] |  |  |  |
Total stock-based compensation expense | 26,211 | 23,715 | 80,307 | 75,121
Share-Based Payment Arrangement, Amount Capitalized | 400 |  | 1,100 |
Employee stock purchase plan |  |  |  |
Stockholders' Equity And Stock-Based Compensation [Line Items] |  |  |  |
Total stock-based compensation expense | $ 954 | $ 1,572 | $ 3,512 | $ 4,903

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