Collaboration Agreements - Sanofi (Details) - Sanofi - Collaborative Arrangement - USD ($)	90 Months Ended
Mar. 31, 2026	Dec. 31, 2025
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Remaining performance obligation	$ 0
Contract liability	0	$ 0
Peripheral Program License
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Milestone payments upon achievement of certain clinical, regulatory and sales milestone events	495,000,000.0
Milestone Triggered
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Total collaboration revenue	100,000,000.0
Product
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Total collaboration revenue	$ 0

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