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Collaboration and License Agreements - Janssen Pharmaceuticals, Inc. (Details)	Oct. 03, 2018 USD ($) bundle obligation	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Development, regulatory and sales milestones payments		$ 2,800,000,000
Deferred revenue		866,000	$ 74,099,000
JJDC \| Collaboration and License agreements
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Upfront payment	$ 175,000,000
JJDC \| Common Stock Purchase Agreement \| Collaboration and License agreements
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Proceeds from the sale of future royalties	75,000,000
Janssen \| Collaboration and License agreements
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Milestone payment	$ 73,000,000
Number of distinct bundle \| bundle	1
Number of distinct performance obligations \| obligation	1
Initial transaction price	$ 252,700,000
Janssen \| Collaboration and License agreements \| Maximum
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Development, regulatory and sales milestones payments	825,000,000
Janssen \| JNJ-3989 Agreement
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Milestone payment	$ 25,000,000
Contract assets		0
Deferred revenue		$ 0