Financial Contracts Hedging Commodity and Interest Rate Risk (Detail) (Cash Flow Hedging, USD $) In Millions, unless otherwise specified	Dec. 28, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of interest rate swap	$ 142.8
Wheat Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of interest rate swap	105.8
Soybean Oil Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of interest rate swap	19.1
Natural Gas Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of interest rate swap	$ 17.9