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Borrowings and Credit Arrangements - Company's Borrowings (Details) - USD ($) $ in Millions	Sep. 27, 2025	Sep. 28, 2024
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	$ 2.9	$ 37.5
Long term debt obligations excluding convertible notes	2,505.0	2,497.1
Total debt obligations	2,507.9	2,534.6
Term Loan
Debt Instrument [Line Items]
Current debt obligations, net of debt discount	2.9	37.5
Long term debt obligations excluding convertible notes	1,163.8	1,158.7
2028 Senior Notes
Debt Instrument [Line Items]
Long term debt obligations excluding convertible notes	398.3	397.6
2029 Senior Notes
Debt Instrument [Line Items]
Long term debt obligations excluding convertible notes	$ 942.9	$ 940.8

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