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Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

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Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from contract modification which increases (decreases) right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Collaboration, License, and Supply Agreements - Sanofi (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenues	$ 139,514	$ 666,655
Current deferred revenue	88,772		$ 140,053
Noncurrent deferred revenue	359,273		$ 358,943
Capitalized contract cost, amortization	1,400
Royalties \| Sanofi
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenues	3,521	0
Sanofi
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Development, tech transfer, launch, and sales milestone payments	$ 350,000
Proceeds development, tech transfer, launch, and sales milestone collaboration payment, term	20 years
Sanofi \| Selling, general, and administrative
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Capitalized contract cost, amortization	$ 900	900
Sanofi \| Licensed COVID-19 products and royalty payments
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Development, tech transfer, launch, and sales milestone payments	75,000
Sanofi \| Royalties
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenues	3,500
Sanofi \| CIC Product-Related Development Milestones
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Development, tech transfer, launch, and sales milestone payments	125,000
Sanofi \| CIC Product-Related Launch Milestones
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Development, tech transfer, launch, and sales milestone payments	225,000
Sanofi \| First Four Adjuvant Products
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Development, tech transfer, launch, and sales milestone payments	200,000
Sanofi \| Adjuvant Products Thereafter
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Development, tech transfer, launch, and sales milestone payments	210,000
Sanofi \| Transition Services
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total licensing, royalties, and other revenue	45,400	$ 40,300
Deferred revenue	4,700
Current deferred revenue	2,200
Noncurrent deferred revenue	2,500
Cumulative catch up adjustment	6,100
Sanofi \| Product and Service, Other
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Capitalized contract cost, amortization	$ 35,000