Leases - ROU Assets and Lease Liabilities (Details) - USD ($) $ in Millions	Sep. 28, 2024	Sep. 30, 2023
Lease-Related Assets and Liabilities
Operating lease right-of-use assets	$ 10,234	$ 10,661
Operating lease, right-of-use asset, statement of financial position [Extensible Enumeration]	Other non-current assets	Other non-current assets
Finance lease right-of-use assets	$ 1,069	$ 1,015
Finance lease, right-of-use asset, statement of financial position [Extensible Enumeration]	Property, plant and equipment, net	Property, plant and equipment, net
Total right-of-use assets	$ 11,303	$ 11,676
Operating lease liabilities, current	$ 1,488	$ 1,410
Operating lease, liability, current, statement of financial position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Operating lease liabilities, non-current	$ 10,046	$ 10,408
Operating lease, liability, noncurrent, statement of financial position [Extensible Enumeration]	Other non-current liabilities	Other non-current liabilities
Finance lease liabilities, current	$ 144	$ 165
Finance lease, liability, current, statement of financial position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Finance lease liabilities, non-current	$ 752	$ 859
Finance lease, liability, noncurrent, statement of financial position [Extensible Enumeration]	Other non-current liabilities	Other non-current liabilities
Total lease liabilities	$ 12,430	$ 12,842