Contract with Customer, Asset and Liability (Details) - USD ($) $ in Millions	Mar. 28, 2020	Sep. 28, 2019
Contract with Customer, Asset, before Allowance for Credit Loss	$ 112	$ 150
Accounts Receivable, before Allowance for Credit Loss, Current	12,322	12,755
Accounts Receivable, before Allowance for Credit Loss, Noncurrent	1,737	1,962
Contract with Customer, Asset, Allowance for Credit Loss	535	375
Contract with Customer, Liability, Current	4,276	4,050
Contract with Customer, Liability, Noncurrent	$ 636	$ 619