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Cash, Cash Equivalents and Investments - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
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Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
Cash and Cash Equivalents [Abstract] |  |  |  |  |
Debt securities in continuous loss position | $ 358.2 |  | $ 358.2 |  | $ 136.7
Marketable securities, unrealized gain | $ (30.9) | $ 7.8 | $ (54.3) | $ 29.6 |

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