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Marketable Securities | 3 Months Ended
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Dec. 29, 2023
Investments, Debt and Equity Securities [Abstract] |
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] | 3. MARKETABLE SECURITIES The Company’s portfolio of available-for-sale marketable securities consists of the following (in millions):
| Current |  | Noncurrent
| December 29, 2023 |  | September 29, 2023 |  | December 29, 2023 |  | September 29, 2023
U.S. Treasury and government securities | $ | 15.7 |  |  | $ | 15.1 |  |  | $ | 2.0 |  |  | $ | 4.1 |
Corporate bonds and notes | 0.2 |  |  | — |  |  | — |  |  | — |
Municipal bonds | — |  |  | 0.5 |  |  | — |  |  | — |
Total marketable securities | $ | 15.9 |  |  | $ | 15.6 |  |  | $ | 2.0 |  |  | $ | 4.1 |
Neither gross unrealized gains and losses nor realized gains and losses were material as of December 29, 2023, or September 29, 2023.

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