Fair Value Measurements - Narrative (Details) - USD ($)	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2021	Aug. 31, 2020	Sep. 30, 2019
Convertible Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal	$ 2,999,887,000	$ 2,299,887,000
2025 Notes \| Convertible Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal	$ 700,000,000	0
Debt instrument, interest rate (as a percent)	1.00%
2021 Notes \| Convertible Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal	$ 1,000,000,000	1,000,000,000	$ 1,000,000,000.0
Debt instrument, interest rate (as a percent)			0.25%
2020 Notes \| Convertible Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal	650,000,000	650,000,000		$ 650,000,000.0
Debt instrument, interest rate (as a percent)				0.125%
2019 Notes \| Convertible Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument, interest rate (as a percent)					0.125%
Principal, net of conversion notices	$ 649,887,000	$ 649,887,000			$ 649,900,000
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities, investment maturity	37 months
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale debt securities, investment maturity	12 months