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Acquisitions | 12 Months Ended
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Dec. 31, 2022
Business Combinations [Abstract] |
Acquisitions |
Note 2: | Acquisitions
BIIB118 Acquisition In March 2020 we acquired BIIB118 (CK1 inhibitor) for the potential treatment of patients with behavioral and neurological symptoms across various psychiatric and neurological diseases from Pfizer Inc. (Pfizer). In connection with this acquisition, we made an upfront payment of $75.0 million to Pfizer, which was accounted for as an asset acquisition and recorded as acquired IPR&D in our consolidated statements of income for the year ended December 31, 2020. In 2022 we discontinued further development of BIIB118 based on the decision by management as part of its strategic review process.

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