Restructuring and Other Charges - Schedule of Cumulative Amounts Incurred for Restructuring and Other Activities Costs (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 26, 2025	Sep. 27, 2024	Sep. 27, 2024
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred to date	$ 270,328
Interest Rate Swap
Restructuring Cost and Reserve [Line Items]
Derivative, gain on derivative	35,200	$ 35,200	$ 35,200
Voluntary and Involuntary Terminations
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred to date	109,042
Outside Services
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred to date	158,475
Other
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred to date	$ 2,811