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Investments - Schedule of Investments in Marketable Securities and Other Investments (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Equity securities	$ 41.3	$ 32.3
Debt securities	25.2	24.3
Total investments in marketable securities	66.5	56.6
Investments measured at NAV as a practical expedient	475.9	488.6
Investments without readily determinable fair values	50.4	50.4	$ 50.4	$ 50.4
Total other investments	526.3	539.0	$ 522.9	$ 480.9
Investments	$ 592.8	$ 595.6

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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.

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