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Derivatives - Schedule of Fair Values of Derivative Financial Instruments (Detail) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Not Designated as Hedging Instrument | Accrued Liabilities and Other | Foreign Currency Contracts    
Derivatives Fair Value [Line Items]    
Derivative liabilities $ 2.3 $ 0.1
Not Designated as Hedging Instrument | Prepaid Expenses and Other Current Assets | Foreign Currency Contracts    
Derivatives Fair Value [Line Items]    
Derivative assets 5.9 0.9
Designated as Hedging Instrument | Derivatives Designated as Cash Flow Hedges | Accrued Liabilities and Other | Interest Rate Swap Agreements    
Derivatives Fair Value [Line Items]    
Derivative liabilities 5.0  
Designated as Hedging Instrument | Derivatives Designated as Cash Flow Hedges | Other Noncurrent Assets | Interest Rate Swap Agreements    
Derivatives Fair Value [Line Items]    
Derivative assets   $ 1.0
Designated as Hedging Instrument | Derivatives Designated as Cash Flow Hedges | Other Noncurrent Liabilities | Interest Rate Swap Agreements    
Derivatives Fair Value [Line Items]    
Derivative liabilities $ 9.6