Derivative and Financial Instruments (Notional Amounts of Outstanding Derivative Contracts) (Details) - USD ($) $ in Millions	Jun. 28, 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	887	341
Foreign Currency Contract - Other [Member]
Derivative [Line Items]
Derivative, Notional Amount	1,206	1,125
Coffee Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	84	52
Dairy Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	21	1
Diesel and Other Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 12	$ 17