Segment Reporting - Schedule of Segment Profit or Loss, Including Significant Segment Expenses (Parenthetical) (Detail) - USD ($) $ in Millions |
Dec. 31, 2025 |
Oct. 16, 2025 |
|---|---|---|
| Segment Reporting Information [Line Items] | ||
| Upfront and near-term milestone payments due | $ 25.0 | |
| Leads License Agreement [Member] | ||
| Segment Reporting Information [Line Items] | ||
| Upfront and near-term milestone payments due | $ 30.0 | $ 30.0 |