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Derivatives - Summary of Fair Value Amounts of Company's Derivative Instruments (Parenthetical) (Detail) - USD ($)
$ in Millions
Sep. 30, 2020
Dec. 31, 2019
Other Current Assets [Member] | Foreign Exchange Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Forward foreign exchange contract derivative assets $ 0.1 $ 1.1
Other Current Assets [Member] | Interest Rate Hedge [Member]    
Derivatives, Fair Value [Line Items]    
Interest rate hedge derivative assets   0.8
Other Current Liabilities [Member] | Foreign Exchange Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Forward foreign exchange contract derivative liabilities 2.2 1.3
Other Noncurrent Liabilities [Member] | Interest Rate Hedge [Member]    
Derivatives, Fair Value [Line Items]    
Interest rate hedge liabilities $ 14.0 $ 6.5