Fair Value Measurements - Schedule of Cash, Cash Equivalents, and Short-Term Investments (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Cash and Cash Equivalents [Abstract] | ||
| Fair value disclosure | $ 712.6 | $ 883.3 |
| Debt Securities, Available-for-Sale [Abstract] | ||
| Unrealized Gains | 0.0 | 0.0 |
| Unrealized Losses | (4.3) | (1.3) |
| Amortized Cost | 1,424.8 | 1,827.8 |
| Fair Value | 1,420.5 | 1,826.5 |
| U.S. Treasuries | ||
| Debt Securities, Available-for-Sale [Abstract] | ||
| Amortized Cost | 502.9 | 704.6 |
| Unrealized Gains | 0.0 | 0.0 |
| Unrealized Losses | (3.0) | (0.8) |
| Fair Value | 499.9 | 703.8 |
| Corporate debt securities | ||
| Debt Securities, Available-for-Sale [Abstract] | ||
| Amortized Cost | 209.3 | 239.9 |
| Unrealized Gains | 0.0 | 0.0 |
| Unrealized Losses | (1.3) | (0.5) |
| Fair Value | $ 208.0 | $ 239.4 |
| X | ||||||||||
- Definition Cash, Cash Equivalents And Available-for-sale Debt Securities No definition available.
|
| X | ||||||||||
- Definition Cash, Cash Equivalents And Available-for-sale Debt Securities, Amortized Cost No definition available.
|
| X | ||||||||||
- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- 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), classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|