Commitments and Contingencies - Licenses to Patented Technology (Details) - USD ($) $ in Millions |
1 Months Ended | 3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|---|
Jan. 31, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Lessee, Lease, Description [Line Items] | |||||
| Payments to acquire intangible assets | $ 0 | $ 10 | |||
| Consideration paid | $ 11 | $ 6 | 906 | $ 11 | |
| National Institute of Allergy and Infectious Diseases member | |||||
| Lessee, Lease, Description [Line Items] | |||||
| Payments to acquire intangible assets | $ 10 | ||||
| Arbutus Biopharma Corporation (Arbutus) and Genevant Sciences GmbH (Genevant) | |||||
| Lessee, Lease, Description [Line Items] | |||||
| Amount awarded to other party | $ 6 | $ 884 | |||