Derivative and Financial Instruments (Notional Amounts of Outstanding Derivative Contracts) (Details) - USD ($) $ in Millions	Mar. 29, 2020	Sep. 29, 2019
Interest Rate Contract [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 1,750	$ 1,500
Cross-Currency Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	1,004	341
Foreign Currency Contract - Other [Member]
Derivative [Line Items]
Derivative, Notional Amount	1,120	1,125
Coffee Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	96	52
Dairy Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	49	1
Diesel and Other Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 24	$ 17