Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
Sep. 27, 2025	Sep. 28, 2024	Sep. 30, 2023
Income Taxes [Abstract]
U.S. Federal income tax expense (benefit) at the statutory rate	$ (35)	$ (28)	$ 15
Adjustments to reconcile to the income tax provision:
U.S. state income tax expense	(3)	0	0
Federal and state credits	(1)	(1)	(1)
Share-based compensation	4	0	0
Withholding taxes	(1)	2	6
Changes in valuation allowance	31	11	5
Foreign income taxed in the U.S.	2	0	1
Brazil ICMS rate reduction	(4)	(6)	(2)
Foreign operations, inclusive of rate differential	(7)	0	3
Uncertain tax positions	2	(5)	2
Goodwill impairment	0	44	0
Other	5	2	5
Expense (benefit) for income taxes	$ (7)	$ 19	$ 34

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to the ICMS rate reduction in Brazil.

No definition available.