Leases (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jul. 02, 2022	Jul. 02, 2022	Jul. 03, 2021	Oct. 02, 2021
Operating Leases [Abstract]
Operating lease right-of-use assets	$ 522	$ 522		$ 562
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Operating lease right-of-use assets	Operating lease right-of-use assets		Operating lease right-of-use assets
Current operating lease liabilities	$ 107	$ 107		$ 113
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other Liabilities, Current	Other Liabilities, Current		Other Liabilities, Current
Noncurrent operating lease liabilities	$ 432	$ 432		$ 466
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Noncurrent operating lease liabilities	Noncurrent operating lease liabilities		Noncurrent operating lease liabilities
Finance Leases [Abstract]
Finance lease right-of-use assets	$ 40	$ 40		$ 57
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, Plant and Equipment, Net	Property, Plant and Equipment, Net		Property, Plant and Equipment, Net
Current finance lease liability	$ 10	$ 10		$ 14
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Long-term Debt and Lease Obligation, Current	Long-term Debt and Lease Obligation, Current		Long-term Debt and Lease Obligation, Current
Noncurrent finance lease liabilities	$ 27	$ 27		$ 38
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-term debt, less current portion	Long-term debt, less current portion		Long-term debt, less current portion
Lease Cash Flow and Lease Expense [Abstract]
Operating cash flows from operating leases		$ 100	$ 85
Operating cash flows from finance leases		1	2
Financing cash flows from finance leases		14	19
Amortization of right-of-use assets from finance leases		7	$ 9
Right-of-use assets obtained in exchange for operating lease liabilities	$ 5	$ 26