Contract with Customer, Asset and Liability (Details) - USD ($) $ in Millions	Dec. 28, 2019	Sep. 28, 2019
Contract with Customer, Asset, before Allowance for Credit Loss	$ 134	$ 125
Accounts Receivable, before Allowance for Credit Loss, Current	14,452	12,755
Accounts Receivable, before Allowance for Credit Loss, Noncurrent	1,891	1,987
Contract with Customer, Asset, Allowance for Credit Loss	406	327
Contract with Customer, Liability, Current	4,446	4,050
Contract with Customer, Liability, Noncurrent	$ 676	$ 619