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Financial Contracts Hedging Commodity and Interest Rate Risk (Detail) (Cash Flow Hedging, USD $)
In Millions, unless otherwise specified
Jul. 12, 2014
Derivative Instruments, Gain (Loss) [Line Items]  
Notional amount of interest rate swap $ 205.1
Wheat Contracts
 
Derivative Instruments, Gain (Loss) [Line Items]  
Notional amount of interest rate swap 161.9
Soybean Oil Contracts
 
Derivative Instruments, Gain (Loss) [Line Items]  
Notional amount of interest rate swap 28.2
Natural Gas Contracts
 
Derivative Instruments, Gain (Loss) [Line Items]  
Notional amount of interest rate swap $ 15.0