Collaborative and Other Relationships - Eisai (Details) $ in Millions |
Dec. 31, 2023
USD ($)
|
|---|---|
| Eisai | |
| Collaborative arrangements and non-collaborative arrangement transactions | |
| Payments Made To Termination Agreement | $ 16.0 |
| LEQEMBI Collaboration | |
| Collaborative arrangements and non-collaborative arrangement transactions | |
| Payable Due To Termination Agreement | $ 31.0 |