Collaborative and Other Relationships - Summary of Activity Related To Denali Therapeutics (Details) - Research and development - Denali Therapeutics - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Collaborative arrangements and non-collaborative arrangement transactions | ||
| Expense incurred by the collaboration | $ 14.2 | $ 16.6 |
| Expense reflected within statements of income | $ 8.5 | $ 10.0 |