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Collaboration Agreements, License Agreement and Revenues - Transaction Price Related to Consideration Received and Accounts Receivable Allocated to Performance Obligations along with Associated Deferred Revenue (Detail) - AstraZeneca Agreements [Member] - U.S./RoW and China [Member] $ in Millions	Mar. 31, 2025 USD ($)
License [Member]
Disaggregation of Revenue [Line Items]
Total Consideration	$ 344.5
Product [Member]
Disaggregation of Revenue [Line Items]
Cumulative Revenue	391.7
Co-development, information sharing & committee services [Member]
Disaggregation of Revenue [Line Items]
Total Consideration	625.5
China performance obligation [Member]
Disaggregation of Revenue [Line Items]
Total Consideration	$ 522.5

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- Definition

The total cash consideration received under a collaboration agreement that has been allocated to the different significant units of accounting and includes the portion that has been deferred for revenue recognition.

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