Summary of Significant Accounting Policies - Schedule of Unrealized Loss Recognized in AOCI (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 30, 2023	Sep. 24, 2022	Sep. 25, 2021
Derivative [Line Items]
Gain recognized in other comprehensive loss	$ (9.2)	$ 44.0	$ 9.8
Interest rate caps - derivative
Derivative [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	0.0	0.0	0.4
Interest Rate Swap
Derivative [Line Items]
Gain recognized in other comprehensive loss	(9.2)	44.0	9.4
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	(9.2)	$ 44.0	$ 9.4
Derivative, Notional Amount	$ 1,000.0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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