Revenue - Schedule of Grant Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total revenue	$ 1,981,872	$ 1,146,290	$ 475,598
Grants
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total revenue	382,921	948,709	453,210
Grants | USG Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total revenue	380,996	788,953	204,727
Grants | U.S. DoD
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total revenue	1,925	21,683	12,519
Grants | CEPI
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total revenue	0	135,445	223,158
Grants | Other grant revenue
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Total revenue	$ 0	$ 2,628	$ 12,806