v3.26.1
Redeemable Convertible Preferred Stock, Redeemable Common Stock, and Stockholders’ Equity (Deficit) - Schedule of Stock Options Activity (Details) - USD ($)
$ / shares in Units, $ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Stock Options Outstanding      
Beginning balance (in shares) 34,000,000    
Granted (in shares) 0 0  
Exercised (in shares) (9,000,000)    
Forfeited, expired, or canceled (in shares) (1,000,000)    
Ending balance (in shares) 24,000,000   34,000,000
Vested and expected to vest (in shares) 24,000,000    
Exercisable (in shares) 19,000,000    
Weighted-Average Exercise Price      
Beginning balance (usd per share) $ 1.76    
Granted (usd per share) 0    
Exercised (usd per share) 1.43    
Forfeited, expired, or canceled (usd per share) 3.64    
Ending balance (usd per share) 1.84   $ 1.76
Vested and expecting to vest (usd per share) 1.84    
Exercisable (usd per share) $ 1.34    
Weighted-Average Remaining Contractual Term (Years) and Aggregate Intrinsic Value      
Outstanding, Weighted average remaining contractual term 6 years   6 years
Vested and expected to vest, Weighted average remaining contractual term 6 years    
Exercisable, Weighted average remaining contractual term 5 years    
Outstanding, Aggregate intrinsic value $ 2,341   $ 2,381
Vested and expected to vest, Aggregate intrinsic value 2,341    
Exercisable, Aggregate intrinsic value $ 1,818