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Stockholders’ Equity - Schedule of Stock Options Roll Forward (Details)
$ / shares in Units, shares in Thousands, $ in Millions
 9 Months Ended 12 Months Ended
Sep. 30, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
$ / shares
shares
Shares Available for Future Grant    
Shares available for grant, beginning of period (in shares) 39,523  
Additional shares reserved (in shares) 13,952  
Options cancelled and forfeited (in shares) 70  
Shares withheld related to net share settlement (in shares) 3,319  
Shares available for grant, ending of period (in shares) 51,450 39,523
Number of Options    
Options outstanding, beginning of period (in shares) 19,553  
Options exercised (in shares) (11,583)  
Options cancelled and forfeited (in shares) 70  
Options outstanding, ending of period (in shares) 7,900 19,553
Options vested and exercisable (in shares) 7,900  
Weighted-Average Exercise Price    
Options outstanding, weighted average exercise price (in dollars per share) | $ / shares $ 11.27 $ 8.60
Options exercised, weighted average exercise price (in dollars per share) | $ / shares 6.56  
Options forfeited, weighted average exercise price (in dollars per share) | $ / shares 44.94  
Options vested and exercisable, weighted average exercise price (in dollars per share) | $ / shares $ 11.27  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract]    
Options, outstanding, weighted average remaining contractual term 3 years 5 months 8 days 3 years 4 months 9 days
Options vested and expected to vest, exercisable, weighted average remaining contractual term 3 years 5 months 8 days  
Options, outstanding, intrinsic value | $ $ 235 $ 302
Options vested and exercisable, aggregate intrinsic value | $ $ 235  
Stock options    
Shares Available for Future Grant    
Granted (in shares) 11,480  
Forfeited (in shares) (6,009)  
Unvested restricted non-voting common stock    
Shares Available for Future Grant    
Forfeited (in shares) (57)