Reconciliation of Cash, Cash Equivalents and Restricted Cash Reported in the Condensed Consolidated Balance Sheet to the Total Amount in the Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Millions	Apr. 03, 2021	Oct. 03, 2020	Mar. 28, 2020	Sep. 28, 2019
Accounting Policies [Abstract]
Cash and Cash Equivalents	$ 15,890	$ 17,914
Restricted Cash and Investments, Current	1	3
Restricted Cash and Investments, Noncurrent	41	37
Cash, Cash Equivalents and Restricted Cash in the Statement of Cash Flows	$ 15,932	$ 17,954	$ 14,378	$ 5,455