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Borrowings and Credit Arrangements - Interest Expense Credit Agreement (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 24, 2022	Sep. 25, 2021	Sep. 26, 2020	Sep. 28, 2019
2018 Credit Agreement
Line of Credit Facility [Line Items]
Interest expense	$ 31.8
Non-cash interest expense	$ 2.2
Weighted average interest rate	1.74%
Interest rate at end of period	4.18%
2017 Credit Agreement
Line of Credit Facility [Line Items]
Interest expense		$ 22.0
Non-cash interest expense		$ 2.5
Weighted average interest rate		1.13%
Interest rate at end of period		1.08%
Prior Credit Agreement
Line of Credit Facility [Line Items]
Interest expense			$ 46.6
Non-cash interest expense			$ 2.5
Weighted average interest rate			2.25%
Interest rate at end of period				1.40%

X

- Definition

Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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Aggregate amount of interest expense on all borrowings.

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