Fair Value Measurements - Narrative (Details) - USD ($)	Jun. 30, 2026	Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal	$ 2,999,887,000	$ 2,999,887,000
2025 Notes \| Convertible Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Principal	$ 700,000,000.0	700,000,000
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	$ 1,000,000,000.0	1,000,000,000
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	$ 650,000,000.0	$ 650,000,000
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	$ 649,900,000
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