Leases (Details) - USD ($) $ in Millions	Mar. 29, 2025	Sep. 28, 2024
Operating leases:
Operating lease right-of-use assets	$ 71	$ 49
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued expenses	Accrued expenses
Current operating lease liabilities	$ 18	$ 11
Noncurrent operating lease liabilities	$ 55	$ 39
Finance leases:
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment	Property, plant and equipment
Finance lease right-of-use assets	$ 0	$ 6