Derivative Financial Instruments (Notional Amounts of Outstanding Derivative Contracts) (Details) - USD ($) $ in Millions	Sep. 27, 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	870	341
Foreign Currency Contract - Other [Member]
Derivative [Line Items]
Derivative, Notional Amount	1,140	1,125
Coffee Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	63	52
Dairy Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	61	1
Diesel and Other Contracts [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 5	$ 17