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Derivatives - Summary of Fair Value Amounts of Company's Derivative Instruments (Parenthetical) (Detail) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Other Current Assets [Member] | Foreign Exchange Forward Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Forward foreign exchange contract derivative assets $ 3.0  
Other Current Liabilities [Member] | Foreign Exchange Forward Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Forward foreign exchange contract derivative liabilities 0.7 $ 6.5
Other Non-current Assets [Member] | Interest Rate Hedge [Member]    
Derivatives, Fair Value [Line Items]    
Interest rate hedge derivative assets 3.7  
Other Noncurrent Liabilities [Member] | Interest Rate Hedge [Member]    
Derivatives, Fair Value [Line Items]    
Interest rate hedge liabilities $ 7.5 $ 14.0