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Derivatives and Hedging Activity - Summary of Notional and Fair Values of Derivative Instruments (Parenthetical) (Detail) - Foreign Exchange Contracts [Member] - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Call Options [Member]    
Derivatives, Fair Value [Line Items]    
Foreign exchange derivative contracts $ 747.3 $ 595.4
Put Options [Member]    
Derivatives, Fair Value [Line Items]    
Foreign exchange derivative contracts 747.3 595.4
Forward Contracts [Member] | Call Options [Member]    
Derivatives, Fair Value [Line Items]    
Foreign exchange derivative contracts 17.0 25.6
Forward Contracts [Member] | Put Options [Member]    
Derivatives, Fair Value [Line Items]    
Foreign exchange derivative contracts $ 0.6 $ 1.2