Financial Contracts Hedging Commodity and Interest Rate Risk (Detail) (Cash Flow Hedging, USD $) In Millions, unless otherwise specified	Jul. 13, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of interest rate swap	$ 197.8
Interest Rate Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of interest rate swap	9.6
Wheat Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of interest rate swap	148.7
Soybean Oil Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of interest rate swap	21.2
Natural Gas Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of interest rate swap	$ 18.3