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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2025
Fair Value Disclosures [Abstract] |
Schedule of Financial Instruments Measured at Fair Value on a Recurring Basis | The following table presents information about the Company’s financial instruments that are measured at fair value on a recurring basis using the input categories discussed in Note 1:
| As of March 31, 2025
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Cash equivalents |  |  |  |  |  |  |
Money market funds | $ | 852.7 |  |  | $ | — |  |  | $ | — |  |  | $ | 852.7 |
Total cash equivalents | $ | 852.7 |  |  | $ | — |  |  | $ | — |  |  | $ | 852.7 |
Short-term investments |  |  |  |  |  |  |
Corporate notes and obligations | — |  |  | 112.7 |  |  | — |  |  | 112.7 |
U.S. Treasury securities | — |  |  | 83.3 |  |  | — |  |  | 83.3 |
Municipal securities | — |  |  | 24.0 |  |  | — |  |  | 24.0 |
Asset backed securities | — |  |  | 12.4 |  |  | — |  |  | 12.4 |
U.S. agency obligations | — |  |  | 3.7 |  |  | — |  |  | 3.7 |
Supranational securities | — |  |  | 1.7 |  |  | — |  |  | 1.7 |
Total short-term investments | — |  |  | 237.8 |  |  | — |  |  | 237.8 |
Total | $ | 852.7 |  |  | $ | 237.8 |  |  | $ | — |  |  | $ | 1,090.5 |
| As of December 31, 2024
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Cash equivalents |  |  |  |  |  |  |
Money market funds | $ | 1,230.0 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,230.0 |
Total cash equivalents | $ | 1,230.0 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,230.0 |
Short-term investments |  |  |  |  |  |  |
Corporate notes and obligations | — |  |  | 130.0 |  |  | — |  |  | 130.0 |
U.S. Treasury securities | — |  |  | 82.4 |  |  | — |  |  | 82.4 |
Municipal securities | — |  |  | 29.3 |  |  | — |  |  | 29.3 |
Asset backed securities | — |  |  | 18.9 |  |  | — |  |  | 18.9 |
U.S. agency obligations | — |  |  | 3.6 |  |  | — |  |  | 3.6 |
Supranational securities | — |  |  | 1.7 |  |  | — |  |  | 1.7 |
Total short-term investments | — |  |  | 265.9 |  |  | — |  |  | 265.9 |
Total | $ | 1,230.0 |  |  | $ | 265.9 |  |  | $ | — |  |  | $ | 1,495.9 |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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