Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities - (Losses) Gains Relating to Derivative Instruments Not Designated As Hedging Instruments Recorded to Income (Detail)

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Derivative Instruments and Hedging Activities - (Losses) Gains Relating to Derivative Instruments Not Designated As Hedging Instruments Recorded to Income (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Foreign exchange currency contracts [Member] | Derivatives not designated as hedging instruments [Member] | Selling, general and administrative expenses [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Amount of (Loss) Gain Recognized in Income $ 2.8 $ 4.2 $ 3.7 $ 5.9