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Other Revenue - Narrative (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended | 51 Months Ended |
--- | --- | --- | --- | --- | ---
Jun. 30, 2024 USD ($) | Apr. 30, 2024 USD ($) | Apr. 30, 2020 USD ($) participant | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Number of participants | participant |  |  | 30,000 |  |  |  |  |  |
Total revenue |  |  |  | $ 241 | $ 344 | $ 408 | $ 2,206 |  |
Upfront payment |  |  |  |  |  | 222 |  |  |
Contract with customer, liability | $ 797 |  |  | 797 |  | 797 |  | $ 797 | $ 651
Grant revenue |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Total revenue |  |  |  | 20 | 28 | 20 | 52 |  |
Upfront payment |  |  |  |  |  | 0 |  |  |
Contract with customer, liability | 4 |  |  | 4 |  | 4 |  | 4 | 4
Licensing and royalty revenue |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Total revenue |  |  |  | 30 | 0 | 30 | 0 |  |
Upfront payment |  |  |  |  |  | 20 |  |  |
Contract with customer, liability | 20 |  |  | 20 |  | 20 |  | 20 | $ 0
Other revenue |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Total revenue |  |  |  | 57 | $ 51 | 57 | $ 85 |  |
Collaborative Arrangement, Transaction with Party to Collaborative Arrangement | Licensing and royalty revenue |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Upfront payment |  | $ 50 |  |  |  |  |  |  |
Contract with customer, liability |  | $ 20 |  |  |  |  |  |  |
Collaborative Arrangement, Transaction with Party to Collaborative Arrangement | Other revenue |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  | 30 |  |  |
Contract with customer, liability | 20 |  |  | 20 |  | 20 |  | 20 |
Biomedical Advanced Research And Development Authority |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Award amount |  |  | $ 483 |  |  |  |  | 1,800 |
Amount committed for funding | 77 |  |  | $ 77 |  | $ 77 |  | $ 77 |
Biomedical Advanced Research And Development Authority | Grant revenue |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |
Total revenue | $ 176 |  |  |  |  |  |  |  |

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