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Employee Stock Purchase and Stock Incentive Plans (Stock Issuance Activity Under the ESPP) (Details) - USD ($) | 12 Months Ended
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Oct. 01, 2021 | Oct. 02, 2020 | Sep. 27, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Discount (percent) available to employees on the purchase of common stock | 5.00% |  |
Aggregate Purchase Price Paid for Shares Sold (in shares) | $ 32,148,528 | $ 27,812,601 | $ 27,295,425
Aggregate Number of Shares Sold (in shares) | 287,587 | 333,078 | 389,423
Number of remaining shares reserved for issuance (in shares) | 4,928,513 |  |
ESPP's |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of remaining shares reserved for issuance (in shares) | 3,177,877 |  |

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