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Revenues (Details) - WAINUA (Eplontersen) Collaboration with AstraZeneca [Member] $ in Millions | 6 Months Ended | 12 Months Ended
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Jun. 30, 2025 | Dec. 31, 2021 USD ($) Component PerformanceObligation
Revenues [Abstract] |  |
Upfront payment received |  | $ 200
Number of material components (in Component) | Component |  | 4
Number of performance obligations (in PerformanceObligation) | PerformanceObligation |  | 1
Transaction price |  | $ 200
Percentage of costs associated with ongoing global Phase 3 development program paid by AstraZeneca | 55.00% |

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