Employee Stock Purchase and Stock Incentive Plans - Schedule of fair value of shares of the 2023 SIP and StreetLight Plan (Details) - Restricted Stock Units (RSUs) - USD ($) $ in Thousands	12 Months Ended
	Sep. 26, 2025	Sep. 27, 2024	Sep. 29, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of shares vested	$ 57,673	$ 98,911	$ 54,315
2023 SIP | Service Condition
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of shares vested	45,415	75,625	32,255
2023 SIP | Service Market And Performance Conditions at Target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of shares vested	$ 12,258	$ 23,286	$ 22,060