Financial Instruments and Fair Value Measurements - Summary of Unrealized Gains (Losses) in Foreign Currency, Derivative and Other Gains (Losses) and Other Income (Expense), Net on Remeasurement of Unhedged Portion of Foreign Denominated Debt and Accrued Interest (Detail) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Derivative Instruments and Hedging Activities Disclosure [Abstract] | ||||
| Unrealized gains (losses) on the unhedged portion | $ (4) | $ 2 | $ (10) | $ (69) |