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Fair Value Measurements - Schedule of Fair Value of Senior Convertible Notes (Details) - Senior Notes - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of outstanding senior convertible notes	$ 2,286.0	$ 2,544.6
Senior Convertible Notes due 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of outstanding senior convertible notes	1,163.7	1,262.8
Senior Convertible Notes due 2028
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of outstanding senior convertible notes	$ 1,122.3	$ 1,281.8

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- Definition

Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

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