Debt (Details) $ in Millions	12 Months Ended
	Sep. 27, 2024 USD ($)	Sep. 29, 2023 USD ($)	Sep. 30, 2022 USD ($)	Jul. 26, 2021 USD ($)	May 26, 2021 USD ($)	May 21, 2021 USD ($)
Debt Instrument [Line Items]
Debt, repayments	$ 300.0	$ 900.0	$ 50.0
Revolver
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity						$ 750.0
Additional borrowing capacity						250.0
Debt, gross	$ 0.0
Covenant compliance, maximum leverage ratio	3.0
Term Loans
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity						$ 1,000.0
Debt, gross	$ 0.0	300.0		$ 1,000.0
Debt, repayments	300.0	400.0	$ 50.0
2023 Notes
Debt Instrument [Line Items]
Debt, gross					$ 500.0
Interest rate, stated percentage					0.90%
Debt, repayments		500.0
2026 Notes
Debt Instrument [Line Items]
Debt, gross	$ 500.0	500.0			$ 500.0
Interest rate, stated percentage					1.80%
Redemption price, percentage	101.00%
2031 Notes
Debt Instrument [Line Items]
Debt, gross	$ 500.0	$ 500.0			$ 500.0
Interest rate, stated percentage					3.00%
Redemption price, percentage	101.00%