Investments - Schedule of Investments in Marketable Securities and Other Investments (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Mar. 31, 2026 |
Dec. 31, 2025 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|---|---|---|---|
| Investments, Debt and Equity Securities [Abstract] | ||||||
| Equity securities | $ 43.7 | $ 34.8 | ||||
| Debt securities | 48.1 | 50.0 | ||||
| Total marketable securities | 91.8 | 84.8 | ||||
| Investments measured at NAV as a practical expedient | 600.8 | 576.4 | ||||
| Debt securities | 14.9 | $ 0.0 | 0.0 | $ 0.0 | $ 0.0 | $ 0.0 |
| Investments without readily determinable fair values | 50.4 | 50.4 | 50.4 | 50.4 | 50.4 | 50.4 |
| Total other investments | 666.1 | $ 621.3 | 626.8 | $ 566.1 | $ 526.3 | $ 539.0 |
| Investments | $ 757.9 | $ 711.6 |
| X | ||||||||||
- Definition Debt Securities, Other Investments No definition available.
|
| X | ||||||||||
- Definition Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Sum of the carrying amounts as of the balance sheet date of all investments. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of investment in marketable security. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of investments classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|