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Marketable Securities (Tables) | 12 Months Ended
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Oct. 01, 2021
Investments, Debt and Equity Securities [Abstract] |
Debt Securities, Available-for-sale | The Company's portfolio of available-for-sale marketable securities consists of the following (in millions):
| Current |  | Noncurrent
Available-for-sale: | October 1, 2021 |  | October 2, 2020 |  | October 1, 2021 |  | October 2, 2020
U.S. Treasury and government | $ | 7.6 |  |  | $ | 129.4 |  |  | $ | 6.0 |  |  | $ | 5.0 |
Corporate bonds and notes | 117.0 |  |  | 276.8 |  |  | — |  |  | — |
Municipal bonds | 12.6 |  |  | 1.9 |  |  | 1.1 |  |  | 0.2 |
Total | $ | 137.2 |  |  | $ | 408.1 |  |  | $ | 7.1 |  |  | $ | 5.2 |

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- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 + Details
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