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Intangible assets and goodwill - Schedule of Finite-lived Intangible Assets (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Useful Life in Years | 14 years 4 months 24 days |
Gross Carrying Amount | $ 1,016.2 | $ 832.1
Accumulated Amortization | 287.4 | 227.5
Net Carrying Amount | 728.8 | 604.6
Chimerix Asset Acquisition |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets acquired | $ 156.9 |
Products |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Useful Life in Years | 14 years 4 months 24 days |
Gross Carrying Amount | $ 982.1 | 798.0
Accumulated Amortization | 253.3 | 193.5
Net Carrying Amount | $ 728.8 | 604.5
Customer relationships |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Useful Life in Years | 0 years |
Gross Carrying Amount | $ 28.6 | 28.6
Accumulated Amortization | 28.6 | 28.6
Net Carrying Amount | $ 0.0 | 0.0
CDMO |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Useful Life in Years | 0 years |
Gross Carrying Amount | $ 5.5 | 5.5
Accumulated Amortization | 5.5 | 5.4
Net Carrying Amount | $ 0.0 | $ 0.1

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