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Borrowings and Credit Arrangements - Interest Expense Senior Notes (Details) - Senior Notes - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Sep. 28, 2024 | Sep. 30, 2023 | Sep. 24, 2022 | Sep. 28, 2020 | Jan. 19, 2018
Debt Instrument [Line Items] |  |  |  |  |
Interest expense | $ 52.1 | $ 53.0 | $ 52.1 |  |
Non-cash interest expense | $ 2.8 | 2.8 | 2.8 |  |
2029 Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate (percent) | 3.25% |  |  | 3.25% |
Interest expense | $ 32.9 | 33.5 | 32.9 |  |
Non-cash interest expense | $ 2.1 | 2.1 | 2.1 |  |
2028 Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate (percent) | 4.625% |  |  |  | 4.625%
Interest expense | $ 19.2 | 19.5 | 19.2 |  |
Non-cash interest expense | $ 0.7 | $ 0.7 | $ 0.7 |  |

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