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Fair Value Measurements - Narrative (Details) - USD ($) | Jun. 30, 2025 | Dec. 31, 2024
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Amortized cost of available-for-sale investments with maturities less than one year | $ 1,492,400,000 | $ 1,139,900,000
Amortized cost of available-for-sale investments with maturities greater than one year | 945,200,000 | 565,800,000
Net gain on investments, net of tax | 3,500,000 | 2,600,000
Convertible Debt | 2026 Notes |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Debt instrument, fair value | 1,531,900,000 |
Convertible Debt | 2030 Notes |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Debt instrument, fair value | 2,161,900,000 |
Money market funds |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Unrealized gain | 0 | 0
Unrealized loss | 0 | $ 0
Standby Letters of Credit |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Restricted cash | $ 6,800,000 |

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- Definition Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14 + Details
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