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Fair Value Measurements - Additional Information (Detail) - Caito Foods Service and Blue Ribbon Transport [Member] - USD ($) $ in Millions	Oct. 06, 2018	Jan. 06, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of contingent consideration, receivable	$ 18.4
Fair value of contingent consideration, payable	3.4	$ 27.4
Other Assets, Net [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of contingent consideration, net receivable	$ 15.0

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