Derivative and Financial Instruments (Notional Amounts of Outstanding Derivative Contracts) (Details) - USD ($) $ in Millions	Apr. 01, 2018	Oct. 01, 2017
Interest Rate Contract [Member]
Derivative [Line Items]
Notional amounts of outstanding derivative contracts	$ 1,250	$ 750
Cross-Currency Swap [Member]
Derivative [Line Items]
Notional amounts of outstanding derivative contracts	476	514
Foreign Currency Contract - Other [Member]
Derivative [Line Items]
Notional amounts of outstanding derivative contracts	1,167	901
Dairy Contracts [Member]
Derivative [Line Items]
Notional amounts of outstanding derivative contracts	42	14
Diesel and Other Contracts [Member]
Derivative [Line Items]
Notional amounts of outstanding derivative contracts	$ 18	$ 41