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Investments - Schedule of Investments in Marketable Securities and Other Investments (Details) - USD ($) $ in Millions	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]
Equity securities	$ 51.3		$ 32.3
Debt securities	26.7		24.3
Total investments in marketable securities	78.0		56.6
Investments measured at NAV as a practical expedient	515.7		488.6
Investments without readily determinable fair values	50.4	$ 50.4	50.4	$ 50.4	$ 50.4	$ 50.4
Total other investments	566.1	$ 526.3	539.0	$ 530.3	$ 522.9	$ 480.9
Investments	$ 644.1		$ 595.6

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