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Geneos Therapeutics, Inc. - Fair Value Assumptions (Details) - Geneos Therapeutics, Inc.	Jun. 01, 2020 USD ($)
Noncontrolling Interest [Line Items]
Geneos enterprise value	$ 4,966,531,000
Expected term (years)
Noncontrolling Interest [Line Items]
Equity method investment, measurement input, expected term	2 years 11 months 1 day
Volatility
Noncontrolling Interest [Line Items]
Equity method investment, measurement input	0.70
Risk-free interest rate
Noncontrolling Interest [Line Items]
Equity method investment, measurement input	0.0246

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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