Derivative Instruments and Hedging Activities - Gains (Losses) Relating to Derivative Instruments Not Designated As Hedging Instruments Recorded to Income (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Foreign exchange currency contracts [Member] | Derivatives not designated as hedging instruments [Member] | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Amount of (Loss) Gain Recognized in Income | $ (9.4) | $ 3.8 | $ (11.4) | $ 3.1 |