Cash and Cash Equivalents and Investment Securities - Additional Information (Detail) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of detailed information about borrowings [line items] | ||
| Restricted cash | $ 106 | $ 99 |
| Amounts deposited on a blocked account | 80 | |
| Current debt securities | 306 | 221 |
| Debt securities [member] | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Current debt securities | $ 306 | $ 221 |