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Fair Value Measurements - Narrative (Details) - USD ($) | Sep. 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 | $ 1,886,600,000 | $ 1,139,900,000
Amortized cost of available-for-sale investments with maturities greater than one year | 1,098,200,000 | 565,800,000
Net gain on investments, net of tax | 6,000,000.0 | 2,600,000
Convertible Debt | 2026 Notes |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Debt instrument, fair value | 1,588,100,000 |
Convertible Debt | 2030 Notes |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Debt instrument, fair value | 2,276,800,000 |
Money market funds |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Unrealized gain | 0 | 0
Unrealized loss | 0 | 0
Time deposits |  |
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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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-3 + Details
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