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Leases - Narrative (Details) ft² in Thousands, $ in Millions | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2025 ft² numberOfExtensionPeriod campus | Sep. 30, 2023 numberOfExtensionPeriod
Lessee, Lease, Description [Line Items] |  |  |  |
Number of campuses | campus |  |  | 2 |
MTC South, MTC North and MTC East |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Area of office space (in sqft) | ft² |  |  | 722 |
Number of extension | numberOfExtensionPeriod |  |  | 3 |
Extension term |  |  | 5 years |
MTC South, MTC North and MTC East | Moderna Technology Center |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Consideration transferred | $ | $ 385 |  |  |
Property additions | $ |  | $ 231 |  |
Cambridge Leases |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Area of office space (in sqft) | ft² |  |  | 462 |
Lease term |  |  |  | 15 years
Number of extension | numberOfExtensionPeriod |  |  |  | 2
Extension term |  |  |  | 7 years

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