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Collaboration Agreements And Business Development Activities - Takeda Collaboration Narrative (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Remaining performance obligation	$ 66.3	$ 66.3
Collaborative Arrangement with Takeda
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue from contract with customer, commercial sales milestone	9.8	9.8
Revenue from contract with customer, commercial milestone	11.0	11.0
Remaining performance obligation	33.4	33.4
Collaborative Arrangement with Takeda | Japan
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Cumulative net sales milestone	$ 150.0	$ 150.0

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 808
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479402/808-10-50-1

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (a)
-SubTopic 10
-Topic 606
-Publisher FASB
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