Derivative Instruments - Gross Contract Notional Volume of Outstanding Derivative Contracts (Detail) (Commodity Contracts [Member])	Dec. 28, 2013 bu	Sep. 28, 2013 bu	Dec. 29, 2012 bu
Corn [Member]
Derivative [Line Items]
Derivative commodity contracts outstanding volume	0	0	1,449,000
Soy Meal [Member]
Derivative [Line Items]
Derivative commodity contracts outstanding mass	0	0	3,500