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Revenue - Schedule of Accounts Receivable, Unbilled Services, and Deferred Revenue (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accounts receivable: |  |  |
Accounts receivable, beginning balance | $ 96,210 | $ 454,993 |
Additions | 1,472,768 | 1,768,457 |
Deductions | (1,264,062) | (2,127,240) |
Accounts receivable, ending balance | 304,916 | 96,210 |
Allowance for doubtful accounts: |  |  |
Allowance for doubtful accounts, beginning balance | (13,835) | 0 |
Additions |  | (13,835) |
Deductions | 6,159 | 0 |
Allowance for doubtful accounts, end balance | (7,676) | (13,835) |
Deferred revenue |  |  |
Deferred revenue, beginning balance | 549,551 | 1,595,472 |
Additions | 581,569 | 46,908 |
Deductions | (267,599) | (1,092,829) |
Deferred revenue, ending balance | 863,521 | 549,551 |
Disaggregation of Revenue [Line Items] |  |  |
Bad debt expense |  | 13,835 |
Deductions | 6,159 | 0 |
Deferred revenue, current | 241,310 | 370,137 | $ 1,400,000
Deferred revenue, noncurrent | 622,210 | 179,414 | 172,500
Deferred revenue | 863,521 | 549,551 | $ 1,595,472
Revenue |  |  |
Deferred revenue |  |  |
Deferred revenue, beginning balance | 273,800 |  |
Deferred revenue, ending balance | 151,100 | 273,800 |
Disaggregation of Revenue [Line Items] |  |  |
Deferred revenue | 151,100 | 273,800 |
Gavi Advance Purchase Agreement- COVAX Facility |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Collaboration agreement upfront payment amount | 696,400 | 697,400 |
Amended and Restated UK Supply Agreement |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Collaboration agreement upfront payment amount | $ 112,500 | $ 819,000 |

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