Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest earned on marketable securities	$ 18.9	$ 27.2
Investment in equity securities, carrying value	22.2		$ 23.5
2029 Senior Notes \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of the notes	465.5		464.9
2031 Senior Notes \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of the notes	$ 451.4		$ 453.9

Amount of investment in equity security without readily determinable fair value.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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