Financial Instruments - Cross Currency Risk Exposures Interest Rate Swaps (Parenthetical) (Detail) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Fair value hedges [member] | ||
| Disclosure of detailed information about hedges [line items] | ||
| Derivatives used for hedging | $ 14 | $ 5 |