Derivative Financial Instruments (Aggregate Outstanding Notionals Related To Undesignated Positions) (Details) (USD $) In Millions, unless otherwise specified	Dec. 29, 2012 bu	Sep. 29, 2012 bu
Corn (in bushels)
Derivative [Line Items]
Aggregate notional of undesignated derivatives, Commodity	36,000,000	19,000,000
Soy Meal (in tons)
Derivative [Line Items]
Aggregate notional of undesignated derivatives, Commodity	65,200	1,200
Soy Oil (in pounds)
Derivative [Line Items]
Aggregate notional of undesignated derivatives, Commodity	0	17,000,000
Live Cattle (in pounds)
Derivative [Line Items]
Aggregate notional of undesignated derivatives, Commodity	223,000,000	68,000,000
Lean Hogs (in pounds)
Derivative [Line Items]
Aggregate notional of undesignated derivatives, Commodity	11,000,000	108,000,000
Foreign Currency [Member]
Derivative [Line Items]
Notional amount of undesignated derivatives	151	165
Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount of undesignated derivatives	25	27