Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Sep. 28, 2025 |
Sep. 29, 2024 |
Oct. 01, 2023 |
|
| Debt Securities, Available-for-sale [Abstract] | |||
| Proceeds from sale of available-for-sale securities | $ 1.1 | $ 1.3 | $ 2.5 |
| Trading Securities [Abstract] | |||
| Management Deferred Compensation Plan liability | $ 115.6 | $ 112.3 | |
| Maximum [Member] | |||
| Debt Securities, Available-for-sale [Abstract] | |||
| Long-term investments, contractual maturity period | 5 years | ||