v3.25.4
Income Taxes - Summary of Reconciliation of Effective Income Tax Rate (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Tax Disclosure [Abstract]      
Expected tax provision at U.S. federal statutory rate $ 348,047 $ 102,726 $ 49,789
State income taxes - net of federal benefit 1,537 1,365 2,309
Foreign tax rate differential   (15,767) 859
Research and development tax credits   (103,858) (45,667)
Stock-based compensation (720,691) (513,841) (79,128)
Change in valuation allowance 467,493 507,149 35,070
Base Erosion Anti-Abuse Tax and related elections   0 14,700
Taxes withheld at source   5,599 4,378
Non-deductible expenses   5,545 3,610
Other   (1,067) (683)
Effects of changes in tax laws or rates enacted in the current period 0    
Effects of cross-border tax laws 0    
Tax credits (151,602)    
Non-deductible officers’ compensation 34,453 33,404 34,479
Other 4,442    
Changes in unrecognized tax benefits 37,901    
Total provision for income taxes 22,724 21,255 19,716
Amount      
Expected tax provision at U.S. federal statutory rate 348,047 102,726 49,789
State income taxes - net of federal benefit 1,537 1,365 2,309
Foreign tax rate differential   (15,767) 859
Research and development tax credits   (103,858) (45,667)
Stock-based compensation (720,691) (513,841) (79,128)
Change in valuation allowance 467,493 507,149 35,070
Base Erosion Anti-Abuse Tax and related elections   0 14,700
Taxes withheld at source   5,599 4,378
Non-deductible expenses   5,545 3,610
Other   (1,067) (683)
Effects of changes in tax laws or rates enacted in the current period 0    
Effects of cross-border tax laws 0    
Tax credits (151,602)    
Non-deductible officers’ compensation 34,453 33,404 34,479
Other 4,442    
Changes in unrecognized tax benefits 37,901    
Total provision for income taxes $ 22,724 $ 21,255 $ 19,716
Percent      
U.S. federal tax at statutory rate 21.00%    
State income taxes - net of federal benefit 0.10%    
Stock-based compensation expense (43.40%)    
Changes in valuation allowance 28.10%    
Effects of changes in tax laws or rates enacted in the current period 0.00%    
Effects of cross-border tax laws 0.00%    
Tax credits (9.10%)    
Nondeductible officers' compensation 2.10%    
Other 0.30%    
Changes in unrecognized tax benefits 2.30%    
Total provision for income taxes and effective tax rate 1.40%    
United Kingdom      
Income Tax Disclosure [Abstract]      
Foreign tax rate differential $ (29,130)    
Stock-based compensation (159,108)    
Change in valuation allowance 184,024    
Other (3,279)    
Amount      
Foreign tax rate differential (29,130)    
Stock-based compensation (159,108)    
Change in valuation allowance 184,024    
Other $ (3,279)    
Percent      
Foreign tax rate differential (1.80%)    
Stock-based compensation expense (9.60%)    
Changes in valuation allowance 11.10%    
Other (0.20%)    
All other foreign      
Income Tax Disclosure [Abstract]      
Foreign tax rate differential $ 8,637    
Amount      
Foreign tax rate differential $ 8,637    
Percent      
Foreign tax rate differential 0.50%