Share Repurchase Transactions and Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Parenthetical) (Detail) $ in Millions |
9 Months Ended |
|---|---|
|
Sep. 30, 2026
USD ($)
| |
| Equity [Abstract] | |
| Unrealized losses on available-for-sale securities, income tax benefits | $ 2 |
| Foreign currency translation adjustments, net of income tax benefits | $ 2 |