Derivative Financial Instruments (Notional Amounts of Outstanding Derivative Contracts) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Oct. 01, 2017
Interest Rate Contract [Member]
Derivative [Line Items]
Notional amounts of outstanding derivative contracts	$ 750	$ 750
Cross-Currency Swap [Member]
Derivative [Line Items]
Notional amounts of outstanding derivative contracts	434	514
Foreign Currency Contract - Other [Member]
Derivative [Line Items]
Notional amounts of outstanding derivative contracts	914	901
Dairy Contracts [Member]
Derivative [Line Items]
Notional amounts of outstanding derivative contracts	16	14
Diesel and Other Contracts [Member]
Derivative [Line Items]
Notional amounts of outstanding derivative contracts	$ 21	$ 41