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Fair Value Measurements (Additional Information) (Detail) - USD ($)
$ in Millions
Sep. 27, 2019
Dec. 28, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term Debt $ 1,750.3 $ 1,968.5
Debt [Member] | Fair Value, Recurring [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term Debt $ 1,800.0 $ 2,000.0