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Collaborative and Other Relationships - Summary of Activity Related to ADUHELM Collaboration (Details) - Eisai - ADUHELM $ in Millions | 3 Months Ended
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Mar. 31, 2022 USD ($)
Research and development |
Collaborative arrangements and non-collaborative arrangement transactions |
Expense incurred by the collaboration | $ 44.2
Expense reflected within statements of income | 24.3
Selling, general and administrative |
Collaborative arrangements and non-collaborative arrangement transactions |
Expense incurred by the collaboration | 95.0
Expense reflected within statements of income | $ 50.9

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