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v3.20.2

Borrowings and Credit Arrangements - Interest Expense Senior Notes (Details) - Senior Notes - USD ($) $ in Millions | 12 Months Ended
--- | ---
Sep. 26, 2020 | Sep. 28, 2019 | Sep. 29, 2018
Debt Instrument [Line Items] |  |  |
Interest expense | $ 62.7 | $ 62.7 | $ 69.2
Non-cash interest expense | 2.8 | 2.8 | 3.6
2028 Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | 19.2 | 19.2 | 13.3
Non-cash interest expense | $ 0.7 | 0.7 | 0.5
Interest rate (percent) | 4.625% |  |
2025 Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | $ 43.5 | 43.5 | 34.7
Non-cash interest expense | $ 2.1 | 2.1 | 1.6
Interest rate (percent) | 4.375% |  |
2022 Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Interest expense | $ 0.0 | 0.0 | 21.2
Non-cash interest expense | $ 0.0 | $ 0.0 | $ 1.5
Interest rate (percent) |  | 5.25% |

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