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Acquisitions, Research Collaborations and License Agreements - Acquisitions (Details) - Subsequent Event $ in Millions | 1 Months Ended
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Apr. 30, 2019 USD ($)
Antelliq |
Acquisitions Research Collaborations And License Agreements Transactions [Line Items] |
Payment to acquire business | $ 2,300
Payment of debt | 1,300
Immune Design |
Acquisitions Research Collaborations And License Agreements Transactions [Line Items] |
Payment to acquire business | $ 301

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