Marketable Securities (Details) - USD ($) $ in Millions	Oct. 02, 2026	Oct. 03, 2025
Debt Securities, Available-for-sale [Line Items]
Marketable securities, current	$ 0.0	$ 212.9
Marketable securities, noncurrent	0.0	14.2
U.S. Treasury and government securities
Debt Securities, Available-for-sale [Line Items]
Marketable securities, current	0.0	112.4
Marketable securities, noncurrent	0.0	14.2
Corporate bonds and notes
Debt Securities, Available-for-sale [Line Items]
Marketable securities, current	0.0	100.5
Marketable securities, noncurrent	$ 0.0	$ 0.0