Collaborative and Other Relationships Summary of Activity Related to Stoke Therapeutics (Details) - Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpenseExcludingAcquiredInProcessCost - Stoke Therapeutics Inc - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Collaborative arrangements and non-collaborative arrangement transactions | ||||
| Expense incurred by the collaboration | $ 14.3 | $ 8.9 | $ 26.5 | $ 12.8 |
| Expense reflected within statements of income | $ 4.3 | $ 2.6 | $ 8.0 | $ 3.8 |