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Debt - 1.00% Senior Convertible Notes (2024 Notes) (Details)		1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 01, 2024 USD ($) note	Mar. 22, 2017 USD ($)	Sep. 27, 2025 USD ($) $ / shares	Sep. 28, 2024 USD ($)	Jul. 01, 2023 USD ($)	Jul. 02, 2022 USD ($) $ / shares shares	Jun. 28, 2025 $ / shares	Mar. 06, 2023	Mar. 03, 2017 USD ($)
Debt details
Payment of debt issuance costs			$ 7,800,000	$ 0
Common stock, par value (in dollars per share) \| $ / shares			$ 0.001			$ 0.001	$ 0.001
1.00% Senior Convertible Notes \| Convertible Notes
Debt details
Stated interest rate								1.00%	1.00%
Aggregate principal amount of convertible debt		$ 60,000,000							$ 400,000,000
Proceeds from debt, net of issuance costs		451,100,000
Payment of debt issuance costs		$ 8,900,000
Debt issued						$ 236,100,000
Debt conversion, shares issued \| shares						8,600,000
Repayments of senior debt						$ 178,800,000
Debt instrument, increase (decrease), net					$ 127,500,000
Number of notes converted \| note	2
Retirement of convertible notes upon maturity	$ 96,400,000