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Derivatives and Hedging Activity - Summary of Notional and Fair Values of Derivative Instruments Table Footnotes (Detail) - Foreign exchange contracts - USD ($)
$ in Millions
Sep. 30, 2025
Dec. 31, 2024
Call Options    
Derivatives, Fair Value [Line Items]    
Foreign exchange derivative contracts $ 522.1 $ 595.4
Put Options    
Derivatives, Fair Value [Line Items]    
Foreign exchange derivative contracts 522.1 595.4
Forward Contracts | Call Options    
Derivatives, Fair Value [Line Items]    
Foreign exchange derivative contracts $ 2.0 25.6
Forward Contracts | Put Options    
Derivatives, Fair Value [Line Items]    
Foreign exchange derivative contracts   $ 1.2