Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Convertible Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Principal balance	$ 1,389.1	$ 1,389.1
Long-term Debt	1,384.4	1,381.6
2026 Notes \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible debt, fair value disclosures	689.7
2026 Notes \| Convertible Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, face amount	$ 695.8
Debt instrument, interest rate, stated percentage	0.00%
Principal balance	$ 695.8	695.8
Long-term Debt	694.9	693.2
2028 Notes \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible debt, fair value disclosures	713.9
2028 Notes \| Convertible Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, face amount	$ 693.3
Debt instrument, interest rate, stated percentage	0.00%
Principal balance	$ 693.3	693.3
Long-term Debt	689.5	688.4
Credit Agreement \| Line of Credit
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Principal balance	1,142.1	1,000.0
Long-term Debt	1,113.8	$ 972.9
Credit Agreement \| Line of Credit \| Secured Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Principal balance	1,142.1
Long-term Debt	$ 1,113.8

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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