Segment Reporting - Schedule of Financial Information Respect to the Company’s Single Operating Segment (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Segment Reporting [Line Items] | ||||
| Revenue | $ 5.0 | $ 0.0 | $ 6.6 | $ 0.0 |
| Operating expenses | ||||
| Depreciation and amortization expense | 17.9 | 8.9 | ||
| Research and development warrant expense | 0.0 | 1.6 | ||
| Stock-based compensation expense | 156.0 | 81.9 | ||
| General and administrative warrant expense | 1.1 | 0.0 | ||
| Total operating expenses | 284.2 | 176.1 | 540.4 | 320.1 |
| Loss from operations | (279.2) | (176.1) | (533.8) | (320.1) |
| Other income (expense), net | 1.8 | (40.0) | 22.4 | 2.0 |
| Interest income, net | 14.2 | 10.2 | 30.6 | 18.9 |
| Loss before income taxes | (263.2) | (205.9) | (480.8) | (299.2) |
| Income tax expense | 0.0 | (0.1) | (0.1) | (0.2) |
| Net loss | (263.2) | (206.0) | (480.9) | (299.4) |
| Reportable Segment | ||||
| Segment Reporting [Line Items] | ||||
| Revenue | 5.0 | 0.0 | 6.6 | 0.0 |
| Operating expenses | ||||
| Depreciation and amortization expense | 10.1 | 4.8 | 17.9 | 8.9 |
| Research and development warrant expense | 0.0 | 0.8 | 0.0 | 1.6 |
| Stock-based compensation expense | 85.6 | 51.8 | 156.0 | 81.9 |
| General and administrative warrant expense | 0.0 | 0.0 | 1.1 | 0.0 |
| Other cost of revenue | 3.3 | 0.0 | 4.2 | 0.0 |
| Other research and development expense | 136.9 | 94.6 | 270.2 | 182.8 |
| Other general and administrative expense | 48.3 | 24.1 | 91.0 | 44.9 |
| Total operating expenses | 284.2 | 176.1 | 540.4 | 320.1 |
| Loss from operations | (279.2) | (176.1) | (533.8) | (320.1) |
| Other income (expense), net | 1.8 | (40.0) | 22.4 | 2.0 |
| Interest income, net | 14.2 | 10.2 | 30.6 | 18.9 |
| Loss before income taxes | (263.2) | (205.9) | (480.8) | (299.2) |
| Income tax expense | 0.0 | (0.1) | (0.1) | (0.2) |
| Net loss | $ (263.2) | $ (206.0) | $ (480.9) | $ (299.4) |
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- Definition General And Administrative Warrant Expense No definition available.
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- Definition Research and Development Warrant Expense No definition available.
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- Definition Total costs of sales and operating expenses for the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of interest income (expense) classified as nonoperating. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Other costs incurred during the reporting period related to other revenue generating activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of general and administrative expense classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of other research and development expense. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of noncash expense for share-based payment arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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