Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Current
U.S. Federal	$ 3	$ 8	$ 12
U.S. State	1	1	1
Non-U.S.	16	19	30
Total current	20	28	43
Deferred:
U.S. Federal	(30)	(4)	(5)
U.S. State	(1)	(1)	(2)
Non-U.S.	4	(4)	(2)
Total deferred	(27)	(9)	(9)
Expense (benefit) for income taxes	$ (7)	$ 19	$ 34