Interest Expense, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Interest expense	$ (1,812)	$ (2,070)	$ (1,973)
Interest and investment income	246	406	424
Net periodic pension and postretirement benefit costs (other than service costs)	261	404	340
Interest expense, net	$ (1,305)	$ (1,260)	$ (1,209)