Derivative Instruments and Hedging Activities - Derivative Instruments Not Designated as Hedging Instruments (Detail) - Derivatives Not Designated as Hedges [Member] - Other Expense, Net [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Foreign Exchange Forward Contracts [Member]
Derivative Instruments Gain Loss [Line Items]
Gains/(losses) from derivative instruments not designated as hedging instruments	$ 10.5	$ 4.4	$ (26.1)
Forward Exchange Agreement [Member]
Derivative Instruments Gain Loss [Line Items]
Gains/(losses) from derivative instruments not designated as hedging instruments			$ 1.1