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Hedging Transactions and Derivative Financial Instruments - Summary of Fair Value of Coffee Futures Assets and Liabilities (Detail) - USD ($)
$ in Millions
Dec. 30, 2017
Dec. 31, 2016
Derivative [Line Items]    
Coffee futures assets $ 0.0 $ 0.0
Net liability (1.2) (6.1)
Coffee Futures [Member]    
Derivative [Line Items]    
Coffee futures assets 0.6 1.4
Coffee futures liabilities $ (1.8) $ (7.5)