Leases - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 29, 2023	Sep. 26, 2025
Leases [Abstract]
Leases not yet commenced, estimated obligation		$ 24.2
Recognized impairment charges	$ 46.7
Operating lease, impairment loss	40.9
Impairment of property, equipment, and leasehold improvements	$ 5.8
Impairment, Long-Lived Asset, Held-for-Use, Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense