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Details of Foreign Exchange Contracts Pre-Tax Amounts (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 30, 2019
Mar. 31, 2018
Dec. 29, 2018
Derivative Instruments and Hedging Activities Disclosure [Line Items]      
Proceeds from Hedge, Investing Activities $ (17.3) $ 15.9  
Document Period End Date Mar. 30, 2019    
Fair Value Hedging [Member]      
Derivative Instruments and Hedging Activities Disclosure [Line Items]      
Derivative, Loss on Derivative $ 5.4 0.0  
Net Investment Hedging | Foreign Exchange Contracts      
Derivative Instruments and Hedging Activities Disclosure [Line Items]      
Derivative, Notional Amount 325.2    
Proceeds from Hedge, Investing Activities 3.9 17.5  
Net Investment Hedging | Currency Swap [Member]      
Derivative Instruments and Hedging Activities Disclosure [Line Items]      
Derivative, Notional Amount 1,500.0   $ 250.0
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contracts | Other Income And Expense [Member]      
Derivative Instruments and Hedging Activities Disclosure [Line Items]      
Gain (Loss) on Derivative Instruments, Net, Pretax $ 2.3 $ 17.1