v3.26.1
Segment and Geographic Information - Summary of Reconciliation of Segment Financial Information to Loss from Operations (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting [Line Items]        
Income from operations $ 912,004 $ 269,317 $ 1,666,002 $ 445,365
Total stock-based compensation expense 265,209 159,971 466,801 315,310
Reconciling items        
Segment Reporting [Line Items]        
Income from operations 912,004 269,317 1,666,002 445,365
Research and development expenses 134,320 102,975 258,756 206,030
General and administrative expenses 124,517 105,725 236,858 213,388
Total stock-based compensation expense 265,209 159,971 466,801 315,310
Operating Segments        
Segment Reporting [Line Items]        
Contribution $ 1,436,050 $ 637,988 $ 2,628,417 $ 1,180,093