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Nature of the business and organization (Details) treatmentCourse in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2022 USD ($) segment category product productCandidate Category treatmentCourse
Asset Acquisition [Line Items] |
Number of categories of public health threats | category | 5
Number of revenue generating products | product | 13
Number of product candidates | productCandidate | 1
Number of product and service categories | Category | 3
Number of reportable segments | segment | 2
Number of operating segments | segment | 2
Chimerix Asset Acquisition |
Asset Acquisition [Line Items] |
Payments to acquire productive assets | $ 238.0
Finite-lived intangible assets acquired | 156.9
Asset acquisition, inventory acquired | $ 82.3
Asset acquisition, domestic royalty percentage | 20.00%
Asset acquisition, treatment volume threshold | treatmentCourse | 1.7
Asset acquisition, international royalty percentage | 15.00%
Chimerix Asset Acquisition | Milestone Payments |
Asset Acquisition [Line Items] |
Asset acquisition, consideration transferred, contingent consideration | $ 124.0
Chimerix Asset Acquisition | Regulatory Milestones |
Asset Acquisition [Line Items] |
Asset acquisition, consideration transferred, contingent consideration | $ 12.5

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