Commitment and Contingencies (Details) dose in Millions, $ in Millions	Dec. 28, 2022 lawsuit	Dec. 12, 2022 defendant	Sep. 30, 2023 USD ($) installment payment	Aug. 31, 2023 USD ($)	Dec. 31, 2022 installment	Nov. 18, 2022 dose	Sep. 30, 2022 USD ($)
Loss Contingencies [Line Items]
Number of defendants | defendant		2
Period to answer		14 days
Number of lawsuits filed | lawsuit	8
Gavi Advance Purchase Agreement- COVAX Facility
Loss Contingencies [Line Items]
Number of doses to be distributed | dose						350
Purchase agreement, number of vaccine doses | dose						2
Collaboration agreement upfront payment amount			$ 696.4
Settlement Agreement
Loss Contingencies [Line Items]
Settlement payment			$ 185.0	$ 149.8			$ 185.0
Number of quarterly installment payments | installment			2		4
Number of settlement payments | payment			2
Settlement agreement, installment payment			$ 34.3