Fair Value - Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Assets
Money market funds	$ 2,430,999	$ 2,386,583
Liabilities
Embedded EPP derivatives	4,360	5,607
Level 1
Assets
Money market funds	2,430,999	2,386,583
Liabilities
Embedded EPP derivatives	0	0
Level 2
Assets
Money market funds	0	0
Liabilities
Embedded EPP derivatives	0	0
Level 3
Assets
Money market funds	0	0
Liabilities
Embedded EPP derivatives	$ 4,360	$ 5,607