v3.25.2
Stockholders' Equity (Tables)
 6 Months Ended
Jun. 30, 2025
Equity [Abstract]  
Schedule of Stock Options and SAR Activity
A summary of stock option and SAR activity for the six months ended June 30, 2025 is as follows (in millions, except share amounts which are reflected in thousands, per share amounts, and years):
SARs Outstanding Number of SARsOptions Outstanding Number of SharesWeighted-Average Exercise Price Per ShareWeighted-Average Remaining Contractual Life (in years)Aggregate Intrinsic Value
As of December 31, 202433 7,198 $40.16 4.90$153 
Granted— 484 $74.44 
Exercised(9)(1,029)$14.76 
Canceled and forfeited(3)(141)$39.82 
As of June 30, 202521 6,512 $46.77 5.05$304 
Exercisable as of June 30, 202521 2,694 $26.98 3.37$180 
Schedule of Restricted Stock Units Activity
The following table summarizes the activity related to our RSUs for the six months ended June 30, 2025 (in thousands, except per share amounts):
Number of SharesWeighted-Average
 Grant-Date Fair
 Value per Share
Unvested and outstanding as of December 31, 202466,202 $48.49 
Granted30,509 $74.84 
Vested(18,850)$44.95 
Canceled and forfeited(4,644)$52.55 
Unvested and outstanding as of June 30, 202573,217 $60.12 
Schedule of Stock-Based Compensation Expense by Function The following table summarizes total stock-based compensation expense by function (in millions):
Three Months Ended June 30,Six Months Ended June 30,
2024202520242025
Operations and support$54 $59 $121 $111 
Sales and marketing24 28 45 52 
Research and development277 284 576 548 
General and administrative100 104 197 199 
Total$455 $475 $939 $910